Quick answers
- Which hospitals does Derek A. Mathis work at?
- Medicare's official clinician data lists Derek A. Mathis at 2 hospitals: Methodist Hospital and Methodist Hospital Stone Oak. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Derek A. Mathis see patients?
- Medicare's clinician data lists 2 practice locations, including San Antonio, TX. Call before your visit to confirm the address.
- What is Derek A. Mathis's specialty?
- Medicare lists Pathology as the primary specialty.
- Does Derek A. Mathis accept Medicare assignment?
- Yes. Medicare's clinician data says Derek A. Mathis 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 Derek A. Mathis?
- (210) 558-6288, as listed in official Medicare / NPI Registry data.
- What is Derek A. Mathis's NPI number?
- 1679796544. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Derek A. Mathis works
Medicare's Facility Affiliation Data lists Derek A. Mathis at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Methodist HospitalSan Antonio, TX · Acute Care Hospital · CCN 450388
- Methodist Hospital Stone OakSan Antonio, TX · Acute Care Hospital · CCN 670055
Practice locations
Addresses where Derek A. Mathis is enrolled with Medicare (CMS data updated 2026-10-02).
- 1139 E Sonterra Blvd, Pathology DepartmentSan Antonio, TX 78258 (210) 558‑6288
- 7700 Floyd Curl DrSan Antonio, TX 78229 (210) 558‑6288
Group practices
Medicare enrollment lists Derek A. Mathis as a member of this group (CMS data updated 2026-10-02).
- South Texas Pathology Associates LLP25 clinicians in the group
Specialties
- Pathologyprimary
Other pathologists in San Antonio
Clinicians with the same Medicare primary specialty in San Antonio, TX — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Eastern Virginia Medical School |
| Graduation year | 1999 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1679796544 |
| 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