Quick answers
- Which hospitals does David Witmer work at?
- Medicare's official clinician data lists David Witmer at 1 hospital: CHRISTUS Santa Rosa Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does David Witmer see patients?
- Medicare's clinician data lists 2 practice locations, including San Marcos, TX and San Antonio, TX. Call before your visit to confirm the address.
- What is David Witmer's specialty?
- Medicare lists Certified Registered Nurse Anesthetist (CRNA) as the primary specialty.
- Does David Witmer accept Medicare assignment?
- Yes. Medicare's clinician data says David Witmer 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 David Witmer?
- (512) 753-3525, as listed in official Medicare / NPI Registry data.
- What is David Witmer's NPI number?
- 1558869875. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where David Witmer works
Medicare's Facility Affiliation Data lists David Witmer at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- CHRISTUS Santa Rosa Medical CenterSan Antonio, TX · Acute Care Hospital · CCN 450237
Practice locations
Addresses where David Witmer is enrolled with Medicare (CMS data updated 2026-10-02).
- 1301 Wonder World Dr, CHRISTUS Santa Rosa San MarcosSan Marcos, TX 78666 (512) 753‑3525
- 7400 Barlite BlvdSan Antonio, TX 78224 (210) 921‑2000
Group practices
Medicare enrollment lists David Witmer as a member of this group (CMS data updated 2026-10-02).
- Emergenchealth PLLC1,056 clinicians in the group
Specialties
Find other clinicians: Certified Registered Nurse Anesthetist (CRNA), Texas →
Other nurse anesthetists in San Marcos
Clinicians with the same Medicare primary specialty in San Marcos, TX — not a recommendation.
Clinician information
| Credential | CNA |
|---|---|
| Graduation year | 2017 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1558869875 |
| 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