Medical emergency?Emergency? Call 911. Nearest emergency roomsNearest ERs

Rheumatology

Carlos O. Pena, MD

Works at hospitals in Philadelphia, PA · Pennsylvania

Summary

Dr. Carlos O. Pena, MD is a rheumatologist at 903 W Martin St, San Antonio, TX 78207. May accept Medicare assignment. NPI 1467024257. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026.

  • Specialty: Rheumatologist (Medicare lists Rheumatology)
  • Address: 903 W Martin St, San Antonio, TX 78207 · Directions (1 more location)
  • Medicare: May accept Medicare assignment
  • Hospital: Jefferson Einstein Philadelphia Hospital
  • Medical school: graduated 2016 (10 years since medical school)
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about Carlos O. Pena, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Carlos O. Pena accept Medicare assignment?
Medicare's clinician data says Carlos O. Pena may accept Medicare assignment (as of October 2, 2026). Ask the office whether they accept it for your visit.
What is Carlos O. Pena's NPI number?
1467024257. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Carlos O. Pena works

Medicare's Facility Affiliation Data lists Carlos O. Pena 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.

Practice locations

Addresses where Carlos O. Pena is enrolled with Medicare (CMS data updated October 2, 2026).

Specialties

Find other Rheumatology doctors in Texas →

Other rheumatologists in San Antonio

Clinicians with the same Medicare primary specialty in San Antonio, TX — not a recommendation.

All rheumatologists in San Antonio →

Clinician information

CredentialMD
Graduation year2016 (10 years since medical school)
Gender (as listed)Male
Medicare assignmentMay accept for some services
NPI (National Provider Identifier)1467024257
CorrectionsReport an error or suggest an update →

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. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  5. Medicare Care Compare — official Medicare tool to look up clinicians