OPINION
LEE, Justice:This is a medical malpractice case in which Elizabeth and Freddie Valdez sued Pasadena Healthcare Management, Inc., and South-more Medical Center, Ltd. [collectively “Southmore”] on behalf of their infant son, Freddie Valdez, Jr., for injuries he sustained during childbirth. The trial court granted summary judgment in favor of Southmore; the Valdezes perfected this appeal. We affirm.
Background.
On February 12, 1993, Elizabeth Valdez arrived at the delivery care unit of the South-more Medical Center. Valdez told the admitting nurse her water had broken and asked the nurse to notify her doctor, Dr. Nasim Aziz, that she was in labor. The nurse told Valdez that Dr. Aziz was away from the hospital but that Dr. John Devine was on call and that he would deliver the baby. The nurse gave Valdez a eonsent-to-treat form which contained the following notice:
*45INDEPENDENT STATUS OF PHYSICIANS: I recognize that any or all physicians, residents or medical students (under the supervision of physicians and/or residents), who furnish services to me during this admission are independent contractors and are NOT AGENTS OR EMPLOYEES OF THE HOSPITAL. I understand and agree that each of the above referenced practitioners, (such as radiologists, pathologists, anesthesiologists, etc.) who render professional services to me bill and collect independently for these services. I understand that their bills will be separate and apart from the hospital’s billing and collections and that the hospital may bill on the physician’s behalf, but subject to the authorizations granted by me in accordance with this agreement.
Valdez signed the form and was taken into delivery. During delivery, Valdez’s son sustained a permanent shoulder injury due to shoulder dystocia, a condition that occurs when a baby’s shoulders are too large to pass through the mother’s birth canal.
The Valdezes filed suit against Dr. Aziz for her negligent failure to diagnose their child’s shoulder condition and against Dr. Devine for negligent treatment. The Valdezes also sued Southmore claiming it was vicariously liable for Dr. Devine’s negligence because he was the hospital’s ostensible agent. The Val-dezes settled their claims against both doctors, and Southmore filed a motion for summary judgment. The trial court granted Southmore’s motion, and the Valdezes filed this appeal. In one point of error, the Val-dezes contend summary judgment was improper because genuine issues of material fact exist as to whether Dr. Devine was Southmore’s ostensible agent.
Standard of Review
A movant for summary judgment has the burden to show that there are no genuine issues of material fact and that it is entitled to judgment as a matter of law. See Tex.R. Civ. P. 166a(e). To be entitled to summary judgment, a defendant must either (1) conclusively negate at least one essential element of each of the plaintiffs causes of action, or (2) conclusively establish each element of an affirmative defense to each claim. See Science Spectrum, Inc. v. Martinez, 941 S.W.2d 910, 911 (Tex.1996). When a mov-ant’s summary judgment proof is sufficient to establish its entitlement to summary judgment, the non-movant may assert an affirmative defense to avoid summary judgment. See American Petrofina, Inc. v. Allen, 887 S.W.2d 829, 830 (Tex.1994). In such cases, the non-movant must urge the defense in its response and provide enough summary judgment proof to create a fact issue as to each element of the defense. Id. In reviewing an order granting summary judgment, we treat evidence favorable to the non-movant as true and indulge all reasonable inferences in the non-movant’s favor. See Specialty Retailers, Inc. v. DeMoranville, 933 S.W.2d 490, 491 (Tex.1996).
Analysis
Generally, an employer is not liable for the negligent acts of an independent contractor. See Clayton W. Williams, Jr., Inc. v. Olivo, 952 S.W.2d 523, 527 (Tex.1997). In most cases, physicians are considered to be independent contractors with regard to the hospitals at which they enjoy staff privileges. See Harris v. Galveston County, 799 S.W.2d 766, 768 (Tex.App.—Houston [14th Dist.] 1990, writ denied). Thus, as a general rule, a hospital is not liable for the negligence of independent physicians. See Berel v. HCA Health Servs., 881 S.W.2d 21, 23 (Tex.App.—Houston [1st Dist.] 1994, writ denied); Nicholson v. Memorial Hosp. Sys., 722 S.W.2d 746, 746 (Tex.App.—Houston [14th Dist.] 1986, writ ref'd n.r.e.); Jeffcoat v. Phillips, 534 S.W.2d 168, 173 (Tex.Civ.App.—Houston [14th Dist.] 1976, writ ref'd n.r.e.). In support of its motion for summary judgment, Southmore submitted the affidavit of Dennis M. Knox, the President and CEO of South-more Medical Center. In his affidavit, Knox states that Dr. Devine “is not and has never been employed by Southmore, nor has he ever been expressly authorized to act ... on behalf of Southmore as an agent.” Knox further states that Dr. Devine “is an independent physician who has been granted privileges to practice medicine at Southmore” and “is solely responsible for deciding how or in what manner to examine patients.... ” In *46addition, Knox’s affidavit indicates that Dr. Devine (1) does not have a contract or agreement with Southmore which would allow the hospital to exercise control over his practice of medicine, (2) does not receive a salary from Southmore, and (3) bills his patients directly for any care rendered to them and decides how much to charge for his services. The Valdezes did not submit any contradictory summary judgment proof, and on appeal, do not dispute that Knox’s affidavit conclusively shows that Dr. Devine was an independent physician the night he delivered their child. The Valdezes do, however, maintain that summary judgment is improper in this case because a fact issue exists as to whether Dr. Devine was Southmore’s ostensible agent.
Although a hospital is generally not liable for the negligence of an independent physician, it may be liable for that physician’s negligence if the plaintiff can show the physician was acting as the hospital’s ostensible agent when the negligent act occurred. See Drennan v. Community Health Inv. Corp., 905 S.W.2d 811, 818-19 (Tex.App.— Amarillo 1995, writ denied). In order to defeat a defendant-hospital’s motion for summary judgment based on the physician’s independent contractor status, the plaintiff must submit summary judgment proof which raises a genuine issue of material fact as to each element of the plaintiffs ostensible agency claim. Id. at 820.1 To establish a claim of ostensible agency, a plaintiff must show that (1) he had a reasonable belief in the agent’s authority, (2) his belief was generated by some holding out by act or neglect of the principal, and (3) he was justified in relying on the representation of authority. Id.; see also McDuff v.Chambers, 895 S.W.2d 492, 498 (Tex.App.—Waco 1995, writ denied).
In her affidavit attached to her summary judgment response, Valdez states:
I went to Southmore Medical Center Hospital on 2/12/93 after my water broke and I was in labor. I asked for my doctor, but my doctor was not there. The nurse told me that Dr. Devine would be delivering my baby and that he was the only doctor there that delivered babies that day. The nurse put some papers in front of me to sign, which I did. I did not read any of the papers. I signed them while I was in pain. The nurse did not explain anything to me about whether Dr. Devine was an agent or an employee of the hospital. I do not understand what an agent is. I only knew at the time that I was in pain, that my baby was coming and that Dr. Devine was the only doctor who was delivering babies. I thought that he worked for the hospital.
Relying solely on her affidavit, Valdez argues a fact issue exists on each element of her ostensible agency claim. Southmore contends Valdez/s affidavit fails to raise a fact issue as to the second element of ostensible agency, ie., whether, by any act or omission, the hospital held out Dr. Devine as its employee or agent. We agree with Southmore.
The only “act” the Valdezes rely upon to support their position that South-more held out Dr. Devine as its employee is the hospital nurse’s statement that Dr. Devine “would be delivering [Valdez’s] baby and that he was the only doctor there that delivered babies that day.” This comment, however, neither explicitly nor implicitly suggests Dr. Devine was the hospital’s employee. Moreover, Valdez’s own statement that “[t]he nurse did not explain anything ... about whether Dr. Devine was an agent or an employee of the hospital” provides additional support for Southmore’s claim that it did not hold out Dr. Devine as a hospital employee. The “holding out” element of the Valdezes’ ostensible agency claim is further negated by Ms. Valdez’s admission that she received and signed a written consent form which contained language expressly disclaiming any such relationship.2 Given the record *47before us, we cannot conclude that South-more did anything to lead the Valdezes to believe that Dr. Devine was the hospital’s employee.
Nevertheless, the Valdezes maintain that summary judgment is improper in this case and cite two San Antonio Court of Appeals cases to support their position. See Sampson v. Baptist Memorial Hosp. Sys., 940 S.W.2d 128 (Tex.App.—San Antonio 1996, writ granted); Smith v. Baptist Hosp. Sys., 720 S.W.2d 618 (Tex.App.—San Antonio 1986, writ ref'd n.r.e.). In Smith, the plaintiff went to the defendant-hospital’s emergency room where he sought treatment for a sore throat. See 720 S.W.2d at 620. The plaintiff experienced an adverse reaction to the medication the emergency room physician administered, and as a result, was without oxygen for approximately five minutes, causing permanent brain damage. Id. The plaintiffs representatives sued the hospital, claiming the emergency room physician was the hospital’s ostensible agent. The trial court granted summary judgment in favor of the hospital, and the plaintiff appealed. Id.
In reviewing the case, the San Antonio court noted that to establish ostensible agency “the plaintiff must have more than a mere belief that the acts were performed by one whom the plaintiff believed to be the defendant’s servant.” Id. at 624. The court further explained:
There must be such rebanee upon the manifestation as exposes the plaintiff to the negligent conduct. The rule normally applies where the plaintiff has submitted himself to the care or protection of an apparent servant in response to an invitation from the defendant to enter into such relations with such servant. A manifestation of authority constitutes an invitation to deal with such servant and to enter into relations with him which are consistent with the apparent authority,
jg (citing Restatement (Second) of Torts § 267 emt. a (1958)).
The Smithcourt then emphasized that the summary judgment record was “replete” with evidence that showed an employment contract existed between the hospital and its emergency room physicians, patients receiving the services of its emergency room physicians were billed directly by the hospital, and a patient entering the emergency room had no way to know whether the treating physician was an independent contractor or a hospital employee. Id. In reversing the summary judgment, the court held:
Sound public policy demands that when an institution calls itself a “full service hospital” and includes an emergency room as part of its facilities, that institution makes a special statement to the public when it opens its emergency room to provide emergency care for people. An agency by estoppel is established by creating the effect that the appearance that hospital’s agents, not independent contractors, will provide medical care to those who enter the hospital. The appearance is what the patient observes and which he relies upon when entering a full service hospital.
Id. (citations omitted). The Valdezes correctly point out that in another emergency room case, the San Antonio court, relying on Smith, imposed a “non-delegable duty” on hospitals for the negligence of their emergency room physicians. See, e.g., Sampson, 940 S.W.2d at 128. The Valdezes suggest Samp-sowand Smith are analogous to the present case and require reversal. We disagree.
Unlike the situations in either Smithor Sampson, there is no evidence in the record to suggest that Valdez was drawn to South-more’s child delivery ward in response to any *48invitation from the hospital. To the contrary, the record shows Valdez went to Southmore solely because her own physician, a doctor with whom she had a previous patient-physician relationship, instructed her to do so. Consequently, the public policy issues concerning emergency room situations raised in both Smith and Sampson are not implicated in the ease at bar. Secondly, unlike Smith, the summary judgment record in this case conclusively shows that Southmore (1) did not have an employment contract with Dr. Devine, (2) did not have any control over Dr. Devine, and (3) did not directly bill or collect for Dr. Devine’s services to his patients. In addition, unlike the defendant-hospital in Smith, the record shows South-more did all that it could under the circumstances to ensure Valdez was aware Dr. De-vine was not a hospital employee.3 Finally, we have neither found, nor have the Valdezes cited, any Texas authority applying the theory of ostensible agency in the hospital setting to include physicians who are not emergency room doctors.
We believe the situation in present ease is more akin to the circumstances of Lopez v. Central Plains Reg’l Hosp., 859 S.W.2d 600 (Tex.App.—Amarillo 1993, no writ). In Lopez, the plaintiffs’ infant child was bom with an injury to its arm. See id. at 601-02. The plaintiff sued the hospital, claiming it was vicariously hable for her obstetrician’s negligence in delivering her child because the doctor was the hospital’s ostensible agent. Id. at 602. After examining the summary judgment record, the court noted the plaintiff and the doctor had an ongoing patient-physician relationship before she went to the hospital to deliver her baby, the doctor was not in a contractual relationship with the hospital, the doctor was an independent contractor who merely had staff privileges, and the hospital did not bill or collect for the doctor’s services. Id. at 605. Based on these facts, the court found that no genuine issue of material fact existed with regard to the plaintiffs’ ostensible agency claim. Id.; see also Nicholson, 722 S.W.2d at 746 (finding that doctor was an independent contractor where no contractual relationship existed between him and the hospital, doctor billed his clients directly and received no remuneration from the hospital).
Similarly, in the present case, Southmore’s summary judgment proof conclusively demonstrates that Dr. Devine did not have a written employment contract with South-more, that he billed patients directly for his services, and that he only had staff privileges at Southmore. Southmore’s proof also conclusively establishes that Dr. Devine does not maintain an office at Southmore and is not scheduled to work any set hours at the hospital. Most significantly, the Valdezes do not dispute that prior to being admitted into the hospital, Ms. Valdez received and signed a written notice expressly stating that her attending physician, Dr. Devine, was an independent contractor. The language appearing on the consent form is clear and conspicuous and was sufficient to provide Valdez with adequate notice that Dr. Devine was neither an employee nor an agent of the hospital.
Conclusion
Because the Valdezes’ summary judgment proof does not raise a fact issue as to whether Southmore held out Dr. Devine as its employee or agent, the trial court did not err in granting summary judgement in favor of *49Southmore. Accordingly, the judgment of the trial court is affirmed.
. In Nicholson, this court noted that the doctrine of ostensible agency is actually an affirmative defense to a hospital’s attempt to avoid liability based on the physician’s independent contractor status. See Nicholson, 722 S.W.2d at 749. As such, it must be pled and proved by the party asserting the defense. Id.
. We recognize that Ms. Valdez states she did not read the consent form before signing it. However, a claim of ostensible agency may only be established through some conduct of the principal. See, e.g., Thermo Prod. Co. v. Chilton Indep. Sch. Dist., 647 S.W.2d 726, 732-33 (Tex.App.—Waco 1983, writ ref’d n.r.e.); Ferguson v. Red *47Arrow Freight Lines, 580 S.W.2d 84, 88 (Tex.Civ. App.—Corpus Christi 1979, no writ) (emphasis added); see also Restatement (Second) of Torts § 267 cmt. a (1958) (stating that ostensible agency "normally applies where the plaintiff has submitted himself to the care or protection of an apparent servant in response to an invitation from the defendant to enter into such relations with such servant.”). Thus, when determining whether a principal held out another as its agent, the critical inquiry is whether the principal took some action that qualifies as a representation of agency. See, e.g., Thermo Prod. Co., 647 S.W.2d at 732-33; Ferguson, 580 S.W.2d at 88. Because the validity of the Valdezes’ ostensible agency claim turns solely upon the action (or inaction) of Southmore, Ms. Valdez’s assertion that she did not read the consent form is immaterial.
. We recognize that in Sampson, as in the present case, the hospital gave the plaintiff (and the plaintiff had signed) a written consent form disclaiming any liability for treating physicians who were independent contractors and not the agent or employee of the hospital. See id. at 133. The Sampson court found that "the nature of the circumstances under which [the plaintiff] sought emergency room services coupled with her statement that she did not recall signing the consent forms were sufficient to raise a question of fact as to whether [the plaintiff] was in a position to understand the terms of the forms.” Id. at 134. We do find the court’s logic puzzling, particularly given its recognition that the "holding out” requirement of ostensible agency cannot be satisfied "where the hospital provides notice to the patient, thereby eliminating the implication that the physician is an employee.” Id. at 133 (citing Stewart v. Midani, 525 F.Supp. 843, 853 (N.D.Ga.1981), Pamperin v. Trinity Memorial Hosp., 144 Wis.2d 188, 423 N.W.2d 848, 856 (1988), & Paintsville Hosp. Co. v. Rose, 683 S.W.2d 255, 256 (Ky.1985)). In any event, without either agreeing or disagreeing with the court’s implicit finding that a signed waiver is ineffective in an emergency room context, such is not the context presented here.