Thomas R. Riley Iv, MD

Medicare activity in 2024

Official CMS public-use data for Thomas R. Riley Iv, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Hospitals where Thomas R. Riley Iv works

Medicare's Facility Affiliation Data lists Thomas R. Riley Iv at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

• Hospital of University of PennsylvaniaPhiladelphia, PA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 390111
• Penn Presbyterian Medical CenterPhiladelphia, PA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 390223
• Pennsylvania HospitalPhiladelphia, PA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 390226

Practice locations

Addresses where Thomas R. Riley Iv is enrolled with Medicare (CMS data updated October 2, 2026).

• 3400 Spruce StPhiladelphia, PA 19104 (215) 662‑4000
• 3701 Market St, Suite 640Philadelphia, PA 19104 (215) 662‑2250
• 800 Walnut StPhiladelphia, PA 19107 (215) 662‑4333

Group practices

Medicare enrollment lists Thomas R. Riley Iv as a member of this group (CMS data updated October 2, 2026).

• University of Penn - Medical Group3,505 clinicians in the group

Specialties

• Rheumatologyprimary
• Internal Medicinealso

Find other Rheumatology doctors in Pennsylvania →

Other rheumatologists in Philadelphia

Clinicians with the same Medicare primary specialty in Philadelphia, PA — not a recommendation.

• Shikha Rathi, MD
• Gelareh Atefi, MD
• Chantel Park, MD
• Chadwick R. Johr, MD
• Isabel Penabad, MD
• Ethan Craig, MD
• Max P. Krall, MD
• Marissa Blum, MD

All rheumatologists in Philadelphia →

Other clinicians in University of Penn - Medical Group

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

• Stella Tse, NP
• Christine Chan, MD
• Sharmil Gohil, MD
• David W. Levy, MD
• Christopher Milton, CNA
• Jennifer M. Olenik, MD

Clinician information

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
6. Medicare Care Compare — official Medicare tool to look up clinicians