Sharon A. Riddler, MD
Specialist
- Medicare participating
At a glance
- Medical school
- Medical College of Wisconsin (1986)
- Years since graduation
- 40
- In the NPI registry since
- 2006
- Medicare patients seen, 2024
- 23
The NPI date is when this clinician registered for a National Provider Identifier, the billing number used on health claims. It is not a license, graduation or board-certification date. NPIs were first issued in May 2005 and became required on claims in 2007–2008, so an early date usually means the clinician was already in practice before then. What an NPI is
Education and training
- 1986Medical school: Medical College of Wisconsin
- 2006Registered with an NPI (national billing number; not a license date) — NPIs began in 2005, so practice likely started earlier
Undergraduate school, residency, fellowship, licensing exams and board certification aren’t in public federal data. Board certification can be confirmed with the certifying board (ABMS member boards for MDs, AOA boards for DOs).
Specialties and state licenses
-
Specialist primary
PA license MD043833L
As reported to the NPI registry. To confirm a license is current, check the state medical board.
Where they work
Hospitals
- UPMC Presbyterian Shadyside Pittsburgh, PA
Medical groups
- University of Pittsburgh Physicians (4,236 clinicians)
Hospitals this clinician lists with Medicare, and groups they bill Medicare through (Care Compare). Affiliation doesn’t mean they see patients at every location.
Medicare patients and services
- Medicare patients, 2024
- 23
- Services billed
- 82
- Patients’ average age
- 65
| Service | Times | Patients |
|---|---|---|
| Established patient office or other outpatient visit, 30-39 minutes | 41 | 20 |
Medicare fee-for-service only. CMS leaves out services billed for fewer than 11 patients. These figures describe a practice’s Medicare work; they aren’t a measure of quality.
Medicare prescriptions
| Drug | Prescriptions |
|---|---|
| Biktarvy (bictegrav/emtricit/tenofov ala) | 283 |
| Atorvastatin Calcium Other prescribers in Pittsburgh, PA | 205 |
| Lisinopril Other prescribers in Pittsburgh, PA | 145 |
| Gabapentin Other prescribers in Pittsburgh, PA | 104 |
| Tivicay (dolutegravir sodium) | 103 |
| Rosuvastatin Calcium Other prescribers in Pittsburgh, PA | 99 |
| Omeprazole Other prescribers in Pittsburgh, PA | 91 |
| Triumeq (abacavir/dolutegravir/lamivudi) | 89 |
| Tamsulosin Hcl Other prescribers in Pittsburgh, PA | 85 |
| Valacyclovir (valacyclovir hcl) Other prescribers in Pittsburgh, PA | 79 |
Prescriptions filled under Medicare Part D, including refills. CMS leaves out drugs prescribed fewer than 11 times.
Industry-funded research
Named as a principal investigator on 1 industry-funded study in 2025, from 1 company. The companies reported $9,700 in research payments for these studies, mostly to the institutions running them.
- A Phase 1, Open-Label, Single-Arm, Single-Dose Study to Evaluate the Pharmacokinetics and Distribution of Long-Acting HIV Capsid Inhibitor, Lenacapavir (LEN) into Rectal and Female Genital Tract Tissues in HIV-Seroneg…
Gilead Sciences, Inc.
From CMS Open Payments research payments, where companies name up to five principal investigators per payment. Research payments usually go to hospitals, universities and research sites, not to the investigator personally. A payment is not evidence of wrongdoing.