MEMORANDUM OPINION
In this action brought pro se under 42 U.S.C. § 1983, plaintiff alleges that he was sexually harassed, denied medical and dental treatment, physically assaulted and retaliated against during his 18-month confinement at the District of Columbia Jail (“Jail”) and the District’s Correctional Treatment Facility (“CTF”).1 He names as defendants the District of Columbia Department of Corrections (“DOC”), DOC *79Director Devon Brown, DOC Acting Assistant Administrator Debra Miller, CTF Warden John Caulfield, Director of Unity Health Care Inc. Diana Lapp, and several other employees of either DOC or CTF.2 Caulfield and Lapp move separately to dismiss pursuant to Rule 12(b)(6) of the Federal Rules of Civil Procedure [Dkt. Nos. 15, 30] and DOC, Brown and Miller move collectively to dismiss pursuant to Rule 12(b)(6) or for summary judgment pursuant to Rule 56 [Dkt. No. 17]. Upon consideration of the parties’ submissions and the entire record, the Court will grant summary judgment to Caulfield, grant Lapp’s motion to dismiss and deny DOC, Brown and Miller’s (“the District of Columbia defendants”) motion for summary judgment.
I. BACKGROUND
Plaintiff was incarcerated at the Jail on March 21, 2007, and transferred to CTF on May 21, 2007. Compl. at 7. While at the Jail, plaintiff allegedly was “victimized by the sexual misconduct of [] one Sgt. Stevenson.” Id. While at CTF, plaintiff alleges that he was denied medical treatment “for the deadly MRSA infection (about 6-13-07) and the pain & suffering of such due to a very poor and unventilated CTF,” id., “stabbed & scalded with hot water by another inmate due to staff at C.T.F. labeling me a snitch ... (incident took place on 6-23-07),” and removed from a drug program “because of my not wanting to participate in some [C]hristian practices.” Id. Plaintiff also claims that “for over (1) year,” his grievances “on all these went unanswered, overlooked or simply ignored ----” Id. at 8. Plaintiff filed this civil action on November 26, 2008, while confined at the United States Penitentiary in Lewisburg, Pennsylvania.
II. LEGAL STANDARDS
A court may dismiss a complaint on the ground that it fails to state a claim upon which relief can be granted if, assuming the alleged facts to be true and drawing all inferences in the plaintiffs favor, it appears that the plaintiff can prove no facts “consistent with the allegations in the complaint” to support the alleged violation. Bell Atlantic Corp. v. Twombly, 550 U.S. 544, 563, 127 S.Ct. 1955, 167 L.Ed.2d 929 (2007); see Harris v. Ladner, 127 F.3d 1121, 1123 (D.C.Cir.1997); Kowal v. MCI Communications Corp., 16 F.3d 1271, 1276 (D.C.Cir.1994). “While a complaint attacked by a Rule 12(b)(6) motion to dismiss does not need detailed factual allegations, ... a plaintiffs obligation to provide the ‘grounds’ of his ‘entitle[ment] to relief requires more than labels and conclusions, and a formulaic recitation of the elements of a cause of action will not do[.]” Bell Atlantic Corp. v. Twombly, 550 U.S. at 555, 127 S.Ct. 1955 (citations omitted); accord Ashcroft v. Iqbal, — U.S.-, 129 S.Ct. 1937, 1949, 173 L.Ed.2d 868 (2009).
Because the Court will be relying on matters outside the pleadings to resolve Caulfield’s and the District of Columbia defendants’ motions, it must treat those motions as seeking summary judgment. See Rule 12(d), Fed. R. Civ. P.; Order of February 10, 2009 (advising plaintiff about this possibility and how to respond to such a motion). Summary judgment shall be granted if the pleadings ... “and any affidavits show that that there is no genuine *80issue as to any material fact and that the movant is entitled to judgment as a matter of law.” Rule 56(c), Fed. R. Civ. P. Material facts are those that “might affect the outcome of the suit under the governing law....” Anderson v. Liberty Lobby, Inc., 477 U.S. 242, 248, 106 S.Ct. 2505, 91 L.Ed.2d 202 (1986). When considering a summary judgment motion, “the evidence of the non-movant is to be believed, and all justifiable inferences are to be drawn in his favor.” Id. at 255, 106 S.Ct. 2505; see also Washington Post Co. v. United States Dep’t of Health and Human Services, 865 F.2d 320, 325 (D.C.Cir.1989). The non-moving party’s opposition, however, must consist of more than mere unsupported allegations or denials and must be supported by affidavits or other competent evidence setting forth specific facts showing that there is a genuine issue for trial. See Rule 56(e), Fed. R. Civ. P.; Celotex Corp. v. Catrett, 477 U.S. 317, 324, 106 S.Ct. 2548, 91 L.Ed.2d 265 (1986).
The non-moving party is “required to provide evidence that would permit a reasonable jury to find” in his favor. Laningham v. United States Navy, 813 F.2d 1236, 1242 (D.C.Cir.1987). If the non-movant’s evidence is “merely colorable” or “not significantly probative,” summary judgment may be granted. Anderson v. Liberty Lobby, Inc., 477 U.S. at 249-50, 106 S.Ct. 2505. To defeat summary judgment, then, plaintiff must have more than “a scintilla of evidence to support his claims.” Freedman v. MCI Telecommunications Corp., 255 F.3d 840, 845 (D.C.Cir.2001); accord Ben-Kotel v. Howard University, 319 F.3d 532, 536 (D.C.Cir.2003).
III. DISCUSSION
Caulfield and the District of Columbia defendants claim that plaintiff failed to exhaust his administrative remedies as required by the Prison Litigation Reform Act of 1995 (“PLRA”), codified at 42 U.S.C. § 1997e(a). In relevant part, the PLRA provides that:
No action shall be brought with respect to prison conditions under section 1983 of this title, or any other Federal law, by a prisoner confined to any jail, prison, or other correctional facility until such administrative remedies as are available are exhausted.
42 U.S.C. § 1997e(a). The exhaustion requirement of Section 1997e(a) is mandatory and “applies to all prisoners seeking redress for prison circumstances or occurrences.” Porter v. Nussle, 534 U.S. 516, 520, 122 S.Ct. 983, 152 L.Ed.2d 12 (2002). Section 1997e(a) “afford[s] corrections officials time and opportunity to address complaints internally before allowing the initiation of a federal case,” and, where possible, to “satisfy the inmate, thereby obviating the need for litigation.” Id. at 524-25, 122 S.Ct. 983. A prisoner must complete the administrative process “regardless of the relief offered through administrative avenues.” Booth v. Churner, 532 U.S. 731, 740-41, 121 S.Ct. 1819, 149 L.Ed.2d 958 (2001). Thus, a prisoner may file a civil action concerning conditions of confinement under federal law only after he has exhausted his administrative remedies. Jackson v. District of Columbia, 254 F.3d 262, 269 (D.C.Cir.2001); Sample v. Lappin, 424 F.Supp.2d 187, 190-91 (D.D.C.2006).
A A Genuine Issue Exists on Plaintiffs Exhaustion of the DOC Claim
Plaintiff alleges that he was sexually assaulted by a DOC corrections officer. Compl. at 7. DOC’s Inmate Grievance Procedure (“IGP”) is set forth in the Inmate Handbook. See District of Columbia Defs’ Mot., Ex. 1 [Dkt. No. 17-2] at 10-11. In a separate section of the Handbook entitled *81“Prevention and Elimination of Sexual Abuse,” inmates who have been sexually assaulted by an employee or another inmate are directed to “[t]ell a staff member” and/or “[c]all the Confidential Sexual Misconduct Hotline ... from any inmate telephone,” which is monitored by the Office of Internal Affairs (“OIA”). Id. at 15. The OIA then is required to interview the accuser and to “take action,” such as transferring the employee from the accuser’s housing unit and forbidding any contact, placing the accuser in segregated housing or transferring the accuser to another unit or institution. Id. “All inmate grievances that allege sexual misconduct by a DOC employee against the inmate are referred to the OIA for investigation.” District of Columbia Defs’ Mot., Declaration of Benjamin Collins (“Collins Deck”) [Dkt. No. 17-3] ¶ 3.
A search of “the DOC OIA database” failed to locate a sexual misconduct grievance from plaintiff, id. ¶ 5, but plaintiff has stated “under penalty of perjury that he did tell several staff members of such,” Exhaustion of Complaint Procedure for Sexual Misconduct Claim by Plaintiff [Dkt. No. 29] at 2. Telling a staff member is listed as one of two ways for an inmate to report sexual misconduct, and plaintiff rightly argues that the Handbook requires no further act by the accuser.3 Thus, whether OIA — which apparently learns of such claims either from a staff member or from its monitoring of the hotline — has a record of plaintiffs complaint to a staff member is of little probative value. Rather, the disposition of the District’s motion turns on the parties’ credibility on the material fact of whether plaintiff informed a staff member about the alleged sexual assault. Such a determination is a fact-finding function, “not [that] of a judge” on summary judgment. Anderson v. Liberty Lobby, Inc., 477 U.S. at 255, 106 S.Ct. 2505. The Court therefore will deny the District of Columbia defendants’ motion for summary judgment based solely on the failure to exhaust administrative remedies.
B. Plaintiff Failed to Exhaust His Administrative Remedies With CTF
Under CTF’s grievance procedure, inmates must first attempt to informally resolve a matter before pursuing the five-step formal grievance process. The formal process requires the submission of “the Informal Resolution Form to any staff member or Facility Grievance Mailbox” within seven days of the incident. Caulfield’s Mot., Affidavit of Donald H. Paul (“Paul Aff t”) [Dkt. No. 15-2] ¶ 8. If dissatisfied with the informal resolution, the inmate has five days from his receipt of the response to the informal resolution to submit a formal grievance to a grievance officer, five days from his receipt of the grievance officer’s decision to appeal to the Warden, and five days from the Warden’s decision to appeal to DOC’s Contract Monitor. Id.4 If still dissatisfied, the inmate has five days from receipt of the Contract Monitor’s decision to appeal to the DOC Director. Id. During plaintiffs incarceration at CTF, an inmate could bypass the informal resolution if he filed his formal *82grievance within seven days of the incident. Id. ¶ 9.
CTF’s records show that plaintiff submitted two separate grievances during his confinement there. On July 4, 2007, plaintiff claimed that “he did not receive any out-of-cell recreation” while housed in the Special Management Unit on July 3-4, 2007. Paul AJEfit ¶ 13 & Attachment B. The grievance was investigated and denied, plaintiff unsuccessfully appealed and the Warden ultimately “denied the grievance appeal on August 17, 2007.” Id. On August 21, 2007, plaintiff claimed that on three separate occasions, the escort officer arrived 30 minutes late to escort him and other inmates to the law library. Id. ¶ 14 & Attachment C. The grievance was investigated and denied on October 9, 2007. Plaintiff “submitted an unclear appeal, which was denied by Warden Caulfield on November 9, 2007.” Paul Afft ¶ 14.
CTF has no record that plaintiff submitted proper grievances on the alleged incidents forming the basis of this civil action, id. ¶ 15; see Compl. at 7, and plaintiff has not provided any evidence to the contrary. Rather, plaintiff asserts “that the basis of [his] complaint is the refusal and denial of response to many grievances[,]” PL’s Motion in Response and Ultimately Motion to Deny Defendant John Caulfield[’]s Motion to Dismiss [Dkt. No. 24] at 1. Plaintiff proffers an inmate grievance form concerning only poor ventilation and the denial of toilet cleansing materials. Dkt. No. 28 at 6-7.5 But that document fails to provide credible evidence of plaintiffs exhaustion of even those comparatively minor claims because it lacks a “date stamp of the grievance officer or a grievance number,” which “as a rule” is provided “upon receipt and prior to review.” Defendant Caulfield’s Reply in Support of His Motion to Dismiss, Second Affidavit of Donald H. Paul [Dkt. No. 32-2] ¶4. Besides, Paul surmises that the proffered grievance, even if received, would have been denied as untimely because plaintiff states that he was aware of the subject conditions “for more than a month,” or as improper because it “combines multiple issues.” Id. The exhaustion requirement is not satisfied “by filing an untimely or otherwise procedurally defective administrative grievance or appeal.” Woodford v. Ngo, 548 U.S. 81, 83-84, 126 S.Ct. 2378, 165 L.Ed.2d 368 (2006).
Given the foregoing flaws in plaintiffs proffered evidence, the lack of any evidence that plaintiff pursued his administrative remedies on the more serious charges at issue, and evidence that plaintiff knew about and indeed utilized CTF’s grievance process to redress two other incidents, the Court concludes that no reasonable jury could find — based solely on plaintiffs testimony — that he properly exhausted his administrative remedies on the underlying claims of this civil action against CTF. See Johnson v. Washington Metropolitan Area Transit Authority, 883 F.2d 125, 128 (D.C.Cir.1989) (“The removal of a factual question from the jury is most likely when a plaintiffs claim is supported solely by the plaintiffs own self-serving testimony, unsupported by corroborating evidence, and undermined either by other credible evidence [or] physical impossibility[.]”) (citations omitted). The Court therefore finds that Caulfield is entitled to judgment as a matter of law.6
*83 C. Plaintiff Fails to State a Claim Against Diana Lapp
In a Section 1983 action, the complaint survives a Rule 12(b)(6) motion to dismiss if it establishes the deprivation of “rights, privileges, or immunities secured by the Constitution and laws” by a person acting under color of state law, including District of Columbia law. 42 U.S.C. § 1983. Lapp suggests that neither she nor Unity is a state actor but acknowledges that Unity contracts with DOC to provide medical treatment to District of Columbia inmates. See Memorandum of Points and Authorities in Support of Defendant Diana Lapp, Medical Director, Unity Health Care, Inc.’s Motion to Dismiss at 1. Because Lapp’s statements are unsworn and undocumented, the Court cannot rely on them to resolve the pending motion. See McManus v. District of Columbia, 530 F.Supp.2d 46, 64 (D.D.C.2007) (“Factual allegations in briefs of memoranda of law may not be considered when deciding a Rule 12(b)(6) motion[.]”) (citations omitted). But even if Lapp were acting under color of District of Columbia law based on “the joint activity theory of section 1983 liability,” Hoai v. Vo, 935 F.2d 308, 313 (D.C.Cir.1991), she could not be held liable for the actions of DOC or CTF employees.
An individual may be personally liable under Section 1983 only if it is shown that she directly participated in the wrongful acts. See Ashcroft v. Iqbal, 129 S.Ct. at 1948; Cameron v. Thornburgh, 983 F.2d 253, 258 (D.C.Cir.1993); Meyer v. Reno, 911 F.Supp. 11, 15 (D.D.C.1996) (citing cases); Price v. Kelly, 847 F.Supp. 163, 169 (D.D.C.1994), aff'd, 56 F.3d 1531 (D.C.Cir.1995). Section 1983 provides no basis for recovery on a theory of respondeat superior. Ashcroft v. Iqbal, 129 S.Ct. at 1948; Rice v. District of Columbia Public Defender Service, 531 F.Supp.2d 202, 204 (D.D.C.2008) (citations omitted). Because plaintiff has pleaded no facts that directly implicate Lapp in the alleged wrongdoing at either the Jail or CTF, the Court grants this defendant’s motion to dismiss for failure to state a claim upon which relief can be granted.
IV. CONCLUSION
For the foregoing reasons, the Court grants summary judgment to defendant Caulfield, grants defendant Lapp’s Rule 12(b)(6) motion to dismiss, and denies the District of Columbia defendants’ motion for summary judgment. An appropriate Order accompanies this Memorandum Opinion.