Quick answers
- Which hospitals does John J. Byrne work at?
- Medicare's official clinician data lists John J. Byrne at 2 hospitals: University Health System and UT Health San Antonio Multispecialty & Research Ho…. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does John J. Byrne see patients?
- Medicare's clinician data lists 2 practice locations, including San Antonio, TX. Call before your visit to confirm the address.
- What is John J. Byrne's specialty?
- Medicare lists Obstetrics/Gynecology as the primary specialty.
- Does John J. Byrne accept Medicare assignment?
- Yes. Medicare's clinician data says John J. Byrne accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for John J. Byrne?
- (210) 450-9000, as listed in official Medicare / NPI Registry data.
- What is John J. Byrne's NPI number?
- 1922447648. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where John J. Byrne works
Medicare's Facility Affiliation Data lists John J. Byrne at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- University Health SystemSan Antonio, TX · Acute Care Hospital · CCN 450213
- UT Health San Antonio Multispecialty & Research Ho…San Antonio, TX · Acute Care Hospital · CCN 670335
Practice locations
Addresses where John J. Byrne is enrolled with Medicare (CMS data updated 2026-10-02).
- 8300 Floyd Curl DrSan Antonio, TX 78229 (210) 450‑9000
- 903 W Martin StSan Antonio, TX 78207 (210) 358‑3400
Group practices
Medicare enrollment lists John J. Byrne as a member of this group (CMS data updated 2026-10-02).
- University of Texas Health Science Center at San Antonio1,297 clinicians in the group
Specialties
- Obstetrics/Gynecologyprimary
Other OB-GYNs in San Antonio
Clinicians with the same Medicare primary specialty in San Antonio, TX — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Texas Medical School At San Antonio |
| Graduation year | 2013 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1922447648 |
| Corrections | Report 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians