*26This suit arises from plaintiff’s visit to the dentist for a routine tooth extraction, which plaintiff alleges resulted in a broken jaw. The trial court granted defendants’ motions for summary judgment “because Plaintiff failed to comply with Rule 9(j) of the North Carolina Rules of Civil Procedure in that no reasonable person would have expected Dr. Joseph Dunn to qualify as an expert witness under Rule 702 of the North Carolina Rules of Evidence.” The sole question presented by this case is whether the Court of Appeals properly reversed the trial court order dismissing plaintiff’s malpractice claim for failure to comply with N.C.G.S. § 1A-1, Rule 9(j). Because we find that plaintiff’s proffered expert witness could have been “reasonably expected to qualify as an expert witness under Rule 702 of the Rules of Evidence,” as required by Rule 9(j)(l) of the North Carolina Rules of Civil Procedure, we affirm the Court of Appeals. We need not address any other issues raised by the parties.
On 16 January 2006, plaintiff went to the dental office of Dr. Shaun O’Hearn in Asheville, North Carolina, complaining of a toothache. Plaintiff was seen by Dr. Daniel H. Proper. At plaintiff’s request, Dr. Proper performed a tooth extraction. Plaintiff alleges that Dr. Proper fractured her jaw during the routine extraction, discharged her from his care without advising her of the fracture, failed to provide appropriate care following the fracture, and ignored her efforts to seek his assistance in treating her injury.
On 5 March 2009, plaintiff filed a complaint asserting a claim for dental malpractice, naming Daniel H. Proper; Shaun O’Hearn; Dr. Shaun O’Hearn, DDS, P.A.; and Affordable Care, Inc. as defendants. The complaint asserted that defendants were negligent in the performance of her tooth extraction and in failing to provide follow-up care. Plaintiff claimed that defendants’ actions and inactions constituted a breach of the standard of care for dental professionals. The complaint included a Rule 9(j) certification stating:
The medical care in this case has been reviewed by Dr. Joseph C. Dunn, who is reasonably expected to qualify as an expert witness under Rule 702 of the North Carolina Rules of Evidence and who is willing to testify that the medical care provided by the Defendants did not comply with the applicable standard of care.
In response to plaintiff’s complaint, defendants filed answers denying all allegations of negligence and breach of the standard of care. Defendants further asserted as an affirmative defense that plaintiff failed to comply with Rule 9Q).
*27Pursuant to the discovery scheduling order issued by the trial court, plaintiff submitted an expert witness designation identifying Dr. Joseph C. Dunn as her only expert witness and summarizing his qualifications. Dr. Dunn completed his undergraduate work at the University of North Carolina at Chapel Hill in 1966. He completed dental school at the University of Louisville School of Dentistry in 1970. From 1970 to 1973 Dr. Dunn served in the Dental Corps of the United States Navy. Following his military service, Dr. Dunn practiced dentistry in Asheville from 1973 until his retirement from full-time practice in 1997. The expert witness designation stated that Dr. Dunn would testify that plaintiff
was not treated in accordance with the expected standard of care for treatment by a General Dentist in North Carolina in that she was not advised of the risks of a fractured jaw occurring from any treatment which was to be afforded by Dr. Proper, Dr. Proper did not take any steps to prevent the fracture of the jaw and he failed to provide for her proper follow up care after she experienced pain as a result of the extraction.
Defendants elicited more information about Dr. Dunn through interrogatories and a deposition. Discovery revealed that after his retirement from full-time clinical practice, Dr. Dunn served as director of the clinic at the local health department from 1998 to 2000. During his time at the clinic, Dr. Dunn performed “a lot of oral surgerfies],” including “a lot of extractions.” Dr. Dunn maintained his license to practice general dentistry following his retirement, which required him to participate in continuing education courses each year. Since retiring, including the year preceding the alleged injury, Dr. Dunn practiced general dentistry on a fill-in basis, usually for dentists in the Asheville area who were ill. When defendants’ attorney asked how many days Dr. Dunn had filled in between January 2005 and January 2006, Dr. Dunn at first estimated thirty days, though he stated that he was not sure because it was a number of years earlier. However, Dr. Dunn subsequently testified that he filled in for a .dentist on a full-time basis for approximately two and one-half months, which he thought was during the same time period. Responding to another question, Dr. Dunn stated that one-hundred percent of his time practicing general dentistry on a fill-in basis constituted active clinical practice. Defendants’ attorney then rephrased the question to ask what percentage of time Dr. Dunn spent working in the active clinical practice of dentistry, assuming an eight-hour *28work day with a four-day work week, to which Dr. Dunn responded, “[L]ess than five percent, I guess.” Dr. Dunn repeatedly explained his uncertainty, stating that it was difficult “to nail down percentages” and “[t]hat is just a thrown out number.” Dr. Dunn did not spend any time teaching, researching, performing administrative tasks, or consulting in the field of dentistry. He testified that he spent a lot of time away from the dental profession serving on the city council, running for mayor, and enjoying time with his grandchildren.
Following the deposition, defendants filed motions for summary judgment under Rule 9(j). A hearing on the motions was scheduled for 9 August 2010. Before the hearing, on 6 August 2010, plaintiff filed a motion to qualify Dr. Dunn as an expert witness under Rule 702(e). On 9 August 2010, Dr. Dunn filed an affidavit purporting to clarify his deposition testimony, asserting that he was engaged in active clinical practice one hundred percent of his professional time between January 2005 and January 2006.
On 20 August 2010, the trial court entered an order granting defendants’ motions for summary judgment and dismissing plaintiff’s case for failure to comply with Rule 9(j). The order also denied plaintiff’s motion to qualify Dr. Dunn under Rule 702(e), which allows expert qualification under extraordinary circumstances. N.C.G.S. § 8C-1, Rule 702(e) (2009). The order contained no written findings of fact. In response to plaintiff’s motion for relief from summary judgment, the trial court filed a subsequent order on 21 September 2010 denying plaintiff’s requested relief. Although the trial court stated in its August 2010 order that “no reasonable person would have expected Dr. Joseph Dunn to qualify as an expert witness under Rule 702,” neither order made a determination as to whether Dr. Dunn actually qualified as a witness under Rule 702(b).
On appeal, a divided panel of the Court of Appeals reversed the trial court, concluding that Dr. Dunn could have been reasonably expected to qualify under Rule 702 as required by Rule 9(j)(l) and (2). Moore v. Proper, — N.C. App. —, —, 715 S.E.2d 586, 590-91 (2011). The Court of Appeals majority expressly stated that it was not ruling on whether Dr. Dunn would ultimately qualify as an expert witness under Rule 702. Id. at —, 715 S.E.2d at 590-91. Because the trial court made no written findings of fact, the Court of Appeals majority construed the factual evidence in the light most favorable to the non-moving party and reviewed the ultimate conclusions of law de novo. *29Id. at —, —, 715 S.E.2d at 590, 592. The dissenting opinion stated that plaintiff did not fulfill the requirements of Rule 9(j)(2) because she did not file a Rule 702(e) motion with the complaint. Id. at —, 715 S.E.2d at 593 (Stephens, J., dissenting). The dissenting opinion further stated that plaintiff could not fulfill the requirements of Rule 9(j)(l) because, with the exercise of reasonable diligence, plaintiff could not reasonably expect Dr. Dunn to qualify as an expert as he neither maintained an active clinical practice nor spent a majority of his professional time engaged in active clinical dentistry. Id. at —, 715 S.E.2d at 593-96.
The outcome of this case hinges on the interaction between N.C.G.S. § 1A-1, Rule 9(j) and N.C.G.S. § 8C-1, Rule 702(b). The relevant parts of Rule 9(j) provide:
(j) Medical malpractice.-Any complaint alleging medical malpractice by a health care provider as defined in G.S. 90-21.11 in failing to comply with the applicable standard of care under G.S. 90-21.12 shall be dismissed unless:
(1) The pleading specifically asserts that the medical care has been reviewed by a person who is reasonably expected to qualify as an expert witness under Rule 702 of the Rules of Evidence and who is willing to testify that the medical care did not comply with the applicable standard of care;
(2) The pleading specifically asserts that the medical care has been reviewed by a person that the complainant will seek to have qualified as an expert witness by motion under Rule 702(e) of the Rules of Evidence and who is willing to testify that the medical care did not comply with the applicable standard of care, and the motion is filed with the complaint; or
(3) The pleading alleges facts establishing negligence under the existing common-law doctrine of res ipsa loquitur.
N.C.G.S. § 1A-1, Rule 9(j) (2009).1
Rule 702(b) provides, in pertinent part:
(b) In amedical malpractice action as defined in G.S. 90-21.11, a person shall not give expert testimony on the appropriate *30standard of health care as defined in G.S. 90-21.12 unless the person is a licensed health care provider in this State or another state and meets the following criteria:
(2) During the year immediately preceding the date of the occurrence that is the basis for the action, the expert witness must have devoted a majority of his or her professional time to either or both of the following:
a. The active clinical practice of the same health profession in which the party against whom or on whose behalf the testimony is offered, and if that party is a specialist, the active clinical practice of the same specialty or a similar specialty which includes within its specialty the performance of the procedure that is the subject of the complaint and have prior experience treating similar patients; or
b. The instruction of students in an accredited health professional school or accredited residency or clinical research program in the same health profession in which the party against whom or on whose behalf the testimony is offered, and if that party is a specialist, an accredited health professional school or accredited residency or clinical research program in the same specialty.
N.C.G.S. § 8C-1, Rule 702(b) (2009).
This Court has stated that “medical malpractice complaints have a distinct requirement of expert certification with which plaintiffs must comply.” Thigpen v. Ngo, 355 N.C. 198, 202, 558 S.E.2d 162, 165 (2002). Those complaints “receive strict consideration by the trial judge,” and “[fjailure to include the certification necessarily leads to dismissal.” Id. When expert testimony is offered, including those cases in which the complaint contains a Rule 9(j) certification, the trial court will generally be “afforded wide latitude” in determining whether the proffered expert testimony will be admissible. State v. Bullard, 312 N.C. 129, 140, 322 S.E.2d 370, 376 (1984). Nonetheless, when a trial court’s determination relies on statutory interpretation, our review is de novo because those matters of statutory interpretation necessarily present questions of law. In re Foreclosure of Vogler Realty, Inc., — N.C. —, —, 722 S.E.2d 459, 462 (2012).
*31Rule 9(j) serves as a gatekeeper, enacted by the legislature, to prevent frivolous malpractice claims by requiring expert review before filing of the action. Thigpen, 355 N.C. at 203-04, 558 S.E.2d at 166. Rule 9(j) thus operates as a preliminary qualifier to “control pleadings” rather than to act as a general mechanism to exclude expert testimony. See id. Whether an expert will ultimately qualify to testify is controlled by Rule 702. The trial court has wide discretion to allow or exclude testimony under that rule. Bullard, 312 N.C. at 140, 322 S.E.2d at 376. However, the preliminary, gatekeeping question of whether a proffered expert witness is “reasonably expected to qualify as an expert witness under Rule 702” is a different inquiry from whether the expert will actually qualify under Rule 702. See N.C.G.S. § 1A-1, Rule 9(j)(1) (citation omitted). We “presum[e] that the legislature carefully chose each word used.” N.C. Dep’t of Corr. v. N.C. Med. Bd., 363 N.C. 189, 201, 675 S.E.2d 641, 649 (2009). Therefore, to “give every word of the statute effect,” we must ensure that the two questions are not collapsed into one. See id. Ignoring the term reasonably expected would thus contravene the manifest intent of the legislature. Accordingly, a trial court must analyze whether a plaintiff complied with Rule 9(j) by including a certification complying with the Rule before the court reaches the ultimate determination of whether the proffered expert witness actually qualifies under Rule 702.
Because Rule 9(j) requires certification at the time of filing that the necessary expert review has occurred, compliance or noncompliance with the Rule is determined at the time of filing. See Thigpen, 355 N.C. at 203-04, 558 S.E.2d at 166; Sharpe v. Worland, 147 N.C. App. 782, 783-84, 557 S.E.2d 110, 112 (2001), disc. rev. denied, 356 N.C. 615, 575 S.E.2d 27 (2002). The Court of Appeals has held that when conducting this analysis, a court should look at “the facts and circumstances known or those which should have been known to the pleader” at the time of filing. Trapp v. Maccioli, 129 N.C. App. 237, 241, 497 S.E.2d 708, 711, disc. rev. denied, 348 N.C. 509, 510 S.E.2d 672 (1998). We find this rule persuasive, as any reasonable belief must necessarily be based on the exercise of reasonable diligence under the circumstances. See Fort Worth & Denver City Ry. Co. v. Hegwood, 198 N.C. 309, 317, 151 S.E. 641, 645 (1930) (discussing knowledge in the context of an action for fraud). As a result, the Court of Appeals has correctly asserted that a complaint facially valid under Rule 9(j) may be dismissed if subsequent discovery establishes that the certification is not supported by the facts, see Barringer v. Wake Forest Univ. Baptist Med. Ctr., 197 N.C. App. 238, *32255, 677 S.E.2d 465, 477 (2009); Ford v. McCain, 192 N.C. App. 667, 672, 666 S.E.2d 153, 157 (2008), at least to the extent that the exercise of reasonable diligence would have led the party to the understanding that its expectation was unreasonable. Therefore, to evaluate whether a party reasonably expected its proffered expert witness to qualify under Rule 702, the trial court must look to all the facts and circumstances that were known or should have been known by the party at the time of filing. See Ewbank v. Lyman, 170 N.C. 505, 508-09, 87 S.E. 348, 349-50 (1915) (discussing a party’s inability to use willful ignorance of facts in the context of a fraud action to secure an advantage).
Though the party is not necessarily required to know all the information produced during discovery at the time of filing, the trial court will be able to glean much of what the party knew or should have known from subsequent discovery materials. See Barringer, 197 N.C. App. at 255, 677 S.E.2d at 477; Ford, 192 N.C. App. at 672, 666 S.E.2d at 157. But to the extent there are reasonable disputes or ambiguities in the forecasted evidence, the trial court should draw all reasonable inferences in favor of the nonmoving party at this preliminary stage of determining whether the party reasonably expected the expert witness to qualify under Rule 7Ó2. See N.C.G.S. § 1A-1, Rule 56 (2009) (stating that summary judgment is proper when there is no genuine issue of material fact for trial); Forbis v. Neal, 361 N.C. 519, 523-24, 649 S.E.2d 382, 385 (2007) (stating that when considering a motion for summary judgment, a trial court must draw all inferences of fact in favor of the party opposing the motion). When the trial court determines that reliance on disputed or ambiguous forecasted evidence was not reasonable, the court must make written findings of fact to allow a reviewing appellate court to determine whether those findings are supported by competent evidence, whether the conclusions of law are supported by those findings, and, in turn, whether those conclusions support the trial court’s ultimate determination. See Turner v. Duke Univ., 325 N.C. 152, 165, 381 S.E.2d 706, 714 (1989). We note that because the trial court is not generally permitted to make factual findings at the summary judgment stage, a finding that reliance on a fact or inference is not reasonable will occur only in the rare case in which no reasonable person would so rely. See Forbis, 361 N.C. at 523-24, 649 S.E.2d at 385.
Having described the meaning of the term reasonably expected, we turn to the requirements of Rule 702(b). Because Dr. Dunn did not claim that he taught in the field of clinical dentistry, we need only *33examine Rule 702(b)(2)(a). According to Rule 702(b)(2)(a), the proffered expert witness must, during the year immediately preceding the date of the injury, “have devoted a majority of his or her professional time to ... [t]he active clinical practice of the same health profession in which the party against whom or on whose behalf the testimony is offered.” N.C.G.S. § 8C-1, Rule 702(b)(2)(a). As recognized by the dissenting opinion in the Court of Appeals, this requirement can be broken into three relevant inquiries: (1) whether, during the year immediately preceding the incident, the proffered expert was in the same health profession as the party against whom or on whose behalf the testimony is offered;2 (2) whether the expert was engaged in active clinical practice during that time period; and (3) whether the majority of the expert’s professional time was devoted to that active clinical practice. See Moore, — N.C. App. at —, 715 S.E.2d at 594 (Stephens, J., dissenting).
The first inquiry will rarely be at issue and does not warrant discussion here. The second inquiry requires that the expert have been engaged in active clinical practice in the year preceding the incident. N.C.G.S. § 8C-1, Rule 702(b)(2). As the dissent at the Court of Appeals noted, clinical means “actual experience in the observation and treatment of patients” — not activities simply relating to the health profession, such as administration or continuing education. Moore, — N.C. App. at —, 715 S.E.2d at 595 (Stephens, J., dissenting) (citations and quotation marks omitted). A continuum exists between active and inactive clinical practice. On the one hand, there is inactive practice, an extreme example of which would be a professional performing one hour of clinical practice per year. On the other hand, there is active practice, an extreme example of which would be a full-time practitioner devoting eighty hours to clinical practice each week. Whether a professional’s clinical practice is considered active during the relevant time period will necessarily be decided on a case-by-case basis considering, among other things, the total number of hours engaged in clinical practice, the type of work the professional is performing, and the regularity or intermittent nature of that practice. No one factor is likely to be determinative. Instead, the court must look to the totality of the circumstances when making this determination.
*34Having defined active clinical practice, we now examine the third inquiry — whether the professional’s active clinical practice constituted the majority of his or her professional time during the year in question. When referring to the expert witness, Rule 702 states that the court should look to “his or her professional time.” N.C.G.S. § 8C-1, Rule 702(b)(2). Therefore, professional time is the professional’s actual time spent engaged in the profession of which he or she is being proffered as an expert. This time may include time spent in clinical practice, administration, continuing education, or any other capacity related to the field- — necessarily excluding time spent outside the profession. See, e.g., Cornett v. Watauga Surgical Grp., 194 N.C. App. 490, 494-95, 669 S.E.2d 805, 808 (2008) (analyzing the actual work week of the proffered expert witness). Using the aggregate time spent in the profession, the trial court must determine the proportion of that time during which the proffered expert was engaged in active clinical practice,3 as defined above, and whether this time constituted at least a majority of his or her total professional time. Whereas the second inquiry is concerned with quantity and quality, this third inquiry is concerned with proportionality. See N.C.G.S. § 8C-1, Rule 702(b)(2). Having considered these three inquiries, the trial court then must determine whether it was reasonable for the plaintiff to expect the proffered expert to qualify under Rule 702, based on what the plaintiff knew or should have known at the time of filing the complaint. See id. § 1A-1, Rule 9(j).
The interaction between the second and third inquiries prevents absurd results. For instance, a professional likely would not qualify under Rule 702(b) if he or she spent one hundred percent of his or her professional time in clinical practice but practiced only ten hours during the relevant year. Similarly, a professional who spent eighty hours per week in the profession as an administrator but very little time performing clinical work likely would not qualify under Rule 702(b). In both cases, the professional would fail the second prong by not having engaged in an active clinical practice. At the same time, the interaction between these inquiries is meant to prevent absurd outcomes in which practitioners who are familiar with the local standard of care are unable to qualify.
We now turn to the facts of this case. Because the trial court dismissed the action for failure to comply with Rule 9(j), we need only consider the preliminary matter of whether Dr. Dunn was reasonably *35expected to qualify under Rule 702(b) based on the facts and circumstances that were known or should have been known by plaintiff at the time of filing her complaint. See id., Rule 9(j)(l). Because the trial court made no written findings of fact, we assume that any disputes or ambiguities in the factual record were at least reasonable and construe them in favor of plaintiff, the nonmoving party, at this stage of the litigation. We do not consider, or in any way express an opinion on, whether Dr. Dunn would actually qualify as an expert witness under Rule 702(b), leaving that determination to the discretion of the trial court, subject to appellate review. See Bullard, 312 N.C. at 140, 322 S.E.2d at 376.
At the time of filing, plaintiff knew or should have known that Dr. Dunn was a licensed dentist with over thirty-five years of full-time experience. During that period, he served as a dentist in the United States Navy and then spent the remainder of his career practicing general dentistry in Asheville. Following his retirement from full-time practice, he continued to perform clinical dentistry as director of a local clinic. To maintain his license to practice dentistry, Dr. Dunn participated in required continuing education courses each year, which would give him at least some degree of insight into the current standard of care for his profession. Plaintiff also knew that since Dr. Dunn’s retirement, he had continued to practice general clinical dentistry on a fill-in basis. The extent of Dr. Dunn’s fill-in work from January 2005 to January 2006 was somewhat unclear. Dr. Dunn’s deposition testimony revealed that during that one-year period he could have practiced as few as thirty days, or even more than two and one-half months when he filled in full time for a friend. Based on that conflicting information, it was at least reasonable to infer that Dr. Dunn engaged in fairly regular clinical dental practice for a substantial number of hours, the totality of which was reasonably likely to amount to active clinical practice. Additionally, all of Dr. Dunn’s time in the dental profession was spent engaged in clinical practice.4 Because activities completely unrelated to dentistry, such as running for mayor, are not included as part of Dr. Dunn’s professional time, it was thus reasonable for plaintiff to infer that Dr. Dunn had devoted a majority of his professional time to the active clinical practice of dentistry. As a result, we can conclude that, at the time of filing, plaintiff *36reasonably expected that Dr. Dunn devoted a majority of his professional time to the active clinical practice of dentistry during the relevant time period. Thus, plaintiffs complaint satisfied the requirements of Rule 9Q)(1), because she reasonably expected Dr. Dunn to qualify as an expert witness under Rule 702(b)(2). Again, we emphasize that we are merely deciding the preliminary issue of whether the complaint satisfied the Rule 9(j) certification requirement, and we in no way express an opinion as to whether Dr. Dunn would qualify as an expert witness under Rule 702(b). We note that, having satisfied the Rule 9(j) pleading requirements, plaintiff has survived the pleadings stage of her lawsuit and may, at the trial court’s discretion, be permitted to amend the pleadings and proffer another expert if Dr. Dunn fails to qualify under Rule 702 at trial or under a pretrial ruling on amotion in limine. See N.C.G.S. § 1A-1, Rules 15, 26(f), (fl) (2009). In light of this holding, we need not consider any other arguments asserted by the parties.
For the foregoing reasons, plaintiff has satisfied the preliminary requirements of Rule 9(j). Accordingly, we affirm the ruling of the Court of Appeals on that issue and remand to that court for further remand to the trial court for additional proceedings not inconsistent with this opinion.
AFFIRMED IN PART AND REMANDED; DISCRETIONARY REVIEW IMPROVIDENTLY ALLOWED.
. Rule 9(j) was amended in 2011; however, the general requirements remain substantially unchanged.
. It is important to note that if the party against whom or on whose behalf the testimony is offered is a specialist, the Rule requires that the proffered expert witness be in the same or similar specialty. N.C.G.S. § 8C-1, Rule 702(b)(2)(a). Because that part of the Rule is not relevant to this case, it will not be discussed.
. We note that if the proffered expert witness instructed students, that time would also be included under Rule 702(b)(2)(b).
. Dr. Dunn stated in his deposition testimony that he spent one hundred percent of the time during which he performed fill-in work practicing general dentistry. Therefore, we need not consider whether Dr. Dunn’s affidavit was a clarifying affidavit and whether it was properly before the trial court.