Philadelphia Dental Practice Closed After Patients Warned of HIV and Hepatitis Exposure

On May 20, 2026, the Philadelphia Department of Public Health issued a public advisory that would have been difficult to imagine receiving in a routine mailbox: anyone treated at Smiles at Rittenhouse Square, a dental practice in Center City Philadelphia, between April 2025 and May 2026 should contact their doctor and get tested for HIV, hepatitis B, and hepatitis C [1].

The reason: the Pennsylvania Department of State had suspended the license of Dr. Kirti Chopra, the practice's sole dentist, five days earlier, after an unannounced investigation found that Chopra had been reusing single-use medical supplies — including vials of septocaine, a local anesthetic — on multiple patients [2]. The suspension order stated that "her continued practice of dentistry presents a clear and immediate danger to public health and safety" [3].

No infections have been confirmed. The city health department has said the risk is low [1]. But for an unknown number of patients now awaiting notification letters, the advisory introduces a period of uncertainty that public health experts say can carry its own costs — in anxiety, stigma, and the practical barriers to getting tested.

What the Investigation Found

The case began with complaints to the Pennsylvania Department of State, which oversees dentistry licensing. On March 25, 2026, state investigators conducted an unannounced inspection of the clinic at 255 South 17th Street, Suite 2507 [4].

According to state investigation documents, Chopra admitted to investigators that she sometimes set aside single-use vials of septocaine — a local anesthetic injected into gum tissue during dental procedures — and reused them on subsequent patients [2]. She was also accused of using single-use saline bags for implant procedures until the bags were empty, rather than discarding them after each patient, though connecting lines were changed between patients [5].

The violations extended beyond medication handling. Investigators observed Chopra and her staff improperly sterilizing critical dental instruments — tools that penetrate soft tissue or bone. According to the investigation, none of the instruments found in the office were sterile, because staff used potentially contaminated gloves to place instruments into possibly contaminated peel pouches [3]. The practice reportedly employed "flash sterilization" methods that violated CDC recommendations for dental instrument processing [5].

These failures created what James Garrow, spokesperson for the Philadelphia Department of Public Health, described as "a possibility of transfer of bodily fluids between patients" [6].

On May 15, 2026, Chopra's license was temporarily suspended pending a preliminary hearing [2]. Through her attorney, Michael H. Fienman, Chopra said she "will not litigate the facts through the media" and emphasized her cooperation with authorities on "patient notification, testing recommendations, and infection-control remediation" [5].

How Many Patients Are Affected?

The Philadelphia Department of Public Health has not disclosed the total number of patients who visited the clinic during the 13-month exposure window from April 2025 to May 2026. The department said it is working with the clinic to compile a complete patient list, and those patients will be notified by mail with information about testing and city clinic referrals [1].

For context, a solo dental practice in a major city typically sees between 1,000 and 2,500 unique patients per year, though the actual number at Smiles at Rittenhouse Square has not been made public.

The hotline set up for affected patients — 215-685-5488, available weekdays from 8:30 a.m. to 5 p.m. — and the email address phlpublichealth@phila.gov are the designated points of contact [1].

The Actual Risk: What Transmission Data Shows

The city's assessment that infection risk is "low" is consistent with what epidemiological data shows about bloodborne pathogen transmission in dental settings, though "low" is not "zero."

The CDC has documented only a handful of confirmed dental-setting transmissions in the United States over the past 35 years. Before 1987, hepatitis B virus was transmitted from 9 dentists and an oral surgeon to a combined 55-plus patients [7]. No dentist-to-patient HBV transmission has been documented in the United States since 1987, largely because of widespread hepatitis B vaccination among healthcare workers and the adoption of universal precautions [7].

HIV transmission in a dental setting has been documented in only one case: dentist David Acer in Florida infected six patients in the late 1980s, a case that remains the subject of epidemiological study decades later [7].

The most instructive parallel to the Philadelphia case is the 2013 investigation of W. Scott Harrington, an oral surgeon in Tulsa, Oklahoma. State health officials urged approximately 7,000 of Harrington's patients to get tested after investigators found rusty instruments, reused needles, and a practice of keeping separate — but improperly sterilized — tools for patients known to carry infectious diseases [8]. Of 4,202 patients tested at state clinics, 89 tested positive for hepatitis C, five for hepatitis B, and four for HIV. However, only one case of hepatitis C was definitively linked to the dental practice through molecular testing — making it the first documented patient-to-patient hepatitis C transmission in a U.S. dental setting [9].

Source: CDC, State Health Departments, News Reports

Data as of May 21, 2026CSV

The per-exposure transmission risk for these pathogens varies significantly. For a needlestick injury — which represents a higher inoculum than contaminated vial reuse — the estimated risk of transmission is approximately 0.3% for HIV, 0.5% for hepatitis C, and 6–30% for hepatitis B (in unvaccinated individuals) [7]. The risk from reusing a contaminated anesthetic vial, where the volume of potentially infectious material is smaller and diluted, would be lower still — though precise estimates for this specific mechanism do not exist in the literature.

A Pattern in U.S. Dental Oversight

The Philadelphia case fits a recurring pattern: infection control failures in dental offices are typically discovered through complaints or incidental inspections, not through routine oversight.

In Pennsylvania, the State Board of Dentistry has authority to inspect dental offices, but there is no mandatory schedule for routine inspections. Under 49 Pa. Code § 33.342, the Board "may conduct inspections of a dental office with or without prior notice" to check compliance, but inspections are triggered primarily by complaints, reports of patient injury, or concerns about specific procedures such as sedation [10]. This means a practice can operate for years — or indefinitely — without an inspection, as long as no complaint is filed.

This complaint-driven model is common across states but has been criticized by patient safety advocates. In the Harrington case in Oklahoma, the dentist practiced for more than 35 years before his violations were uncovered [8]. In a 2018 case in Galveston County, Texas, approximately 9,500 patients — including 500 children — at multiple dental clinics were advised to get tested after inspectors found 11 life-threatening violations related to instrument sterilization [11].

Pennsylvania's infection control regulations for dental offices, codified in Chapter 33 of the Pennsylvania Code, have not undergone substantial revision since 2012. Patient safety advocates have called for mandatory periodic inspections, standardized infection control training requirements beyond existing continuing education mandates, and stronger whistleblower protections for dental staff who report violations. Legislative action on these proposals has not advanced, in part because of opposition from professional associations that argue the existing complaint-based system is adequate and that mandatory inspections would impose undue burdens on small practices [10].

Who Used This Practice — and Who May Not Get Tested

Smiles at Rittenhouse Square is located in one of Philadelphia's wealthiest neighborhoods, and its online marketing emphasized cosmetic dentistry, implants, and services typically associated with commercially insured or self-pay patients. The practice accepted multiple insurance plans, according to its Zocdoc listing [12].

But the demographics of a practice's patient base do not guarantee that all affected patients will get tested. Even in a relatively affluent area, barriers to follow-up testing exist. Patients who have changed addresses may not receive notification letters. Those without a regular primary care physician — common among younger adults and recent transplants to the city — may not have an obvious place to go for testing. Patients who are uninsured or underinsured may face cost concerns, though the city's notification letters are expected to include referrals to free testing at city health clinics [1].

Immigration status can also be a barrier. Philadelphia is a sanctuary city, but fear of interacting with government health systems persists among undocumented residents, and dental practices in Center City serve a diverse population that includes international students and workers on temporary visas.

The health department's hotline and email represent the primary outreach mechanism, but public health research consistently shows that passive notification — mailing letters and waiting for patients to call — reaches a lower percentage of affected individuals than active outreach such as phone calls or community health worker engagement.

Dr. Chopra's Background and Licensure

Dr. Kirti Chopra holds the credential DDS, FAGD (Fellow of the Academy of General Dentistry), according to her practice website and professional listings [12]. The FAGD designation requires completion of 500 hours of continuing dental education and passing a comprehensive exam, and is held by a relatively small percentage of general dentists.

The Pennsylvania Department of State's public licensing database shows Chopra held an active dental license prior to the May 15 suspension. No prior disciplinary actions against Chopra by the Pennsylvania State Board of Dentistry have been identified in publicly available records as of the date of the suspension, though a full review of board records would require a formal records request [3].

Chopra did not respond to reporters' inquiries; the Philadelphia Inquirer reported that she hung up when a reporter identified herself [2]. Her attorney's statement emphasized cooperation with authorities but did not address the specific allegations.

Legal Landscape for Affected Patients

If any patient tests positive for HIV or hepatitis, proving that the infection was acquired at the dental practice would be the central challenge in any civil claim.

Under Pennsylvania medical malpractice law, a plaintiff must establish four elements: that the provider owed a duty of care, that the provider breached that duty, that the breach caused the injury, and that the patient suffered damages [13]. The first two elements are straightforward in this case — dentists owe a duty to follow infection control standards, and reusing single-use anesthetic vials is an unambiguous breach.

Causation, however, is the obstacle. HIV and hepatitis C can have incubation periods lasting weeks to years, and both have multiple transmission routes unrelated to dental care. A patient who tests positive would need molecular epidemiological evidence — such as phylogenetic analysis comparing the viral strain to that of another patient at the practice — to establish a direct link. This type of evidence was used in the Harrington case in Oklahoma but was available only because the state health department conducted large-scale testing and strain comparison [9].

Pennsylvania's statute of limitations for medical malpractice is two years, with the clock starting under the "discovery rule" — meaning it begins when the patient knew or should have known of the injury and its cause [13]. For patients notified now who test positive, the two-year window would begin at the time of notification or positive test result.

Pennsylvania has no dedicated compensation fund for patients harmed by healthcare-associated infections. Unlike vaccine injury, for which a federal compensation program exists, patients exposed to bloodborne pathogens through provider negligence must pursue relief through the civil courts. Class-action litigation is possible if multiple patients test positive and can establish common facts, but individual causation would still need to be proved for each plaintiff.

The Cost of Uncertainty

Public health advisories like the one issued for Smiles at Rittenhouse Square occupy an uncomfortable space between precaution and alarm. Dr. James Garrow of the Philadelphia health department acknowledged the tension, emphasizing that the risk is low while urging every patient from the exposure period to get tested [6].

Infectious disease specialists and public health ethicists have debated whether broad testing advisories in cases where no transmission has been confirmed cause disproportionate harm through patient anxiety. After the Harrington case in Oklahoma, mental health professionals reported increased anxiety and depression among notified patients, regardless of test results [8]. The stigma associated with HIV testing, though reduced from prior decades, remains a factor — particularly for patients who must disclose the reason for testing to partners or employers.

On the other side of the argument, the consequences of failing to identify even one case of transmitted HIV or hepatitis C are severe. Early identification of hepatitis C allows for treatment with direct-acting antivirals that cure the infection in more than 95% of cases. Early HIV diagnosis enables antiretroviral therapy that can render the virus undetectable and untransmittable. The public health calculus, in most expert assessments, favors testing even when the prior probability of transmission is low.

For the patients of Smiles at Rittenhouse Square, the immediate task is concrete: call a doctor, get a blood test, wait for results. The broader questions — about how a practice can operate for over a year with fundamental sterilization failures, about whether Pennsylvania's complaint-driven inspection model is adequate, and about what regulatory changes could prevent the next case — will take longer to resolve.

The clinic cannot reopen until inspectors are "satisfied that all unsafe practices have been remedied" and Chopra's license is reinstated [2]. No timeline for the preliminary hearing has been announced.