Quick answers
- Which hospitals does Mark W. Smith work at?
- Medicare's official clinician data lists Mark W. Smith at 2 hospitals: Antelope Valley Hospital and CHRISTUS Mother Frances Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Mark W. Smith see patients?
- Medicare's clinician data lists 4 practice locations, including Lancaster, CA and Tyler, TX. Call before your visit to confirm the address.
- What is Mark W. Smith's specialty?
- Medicare lists Internal Medicine as the primary specialty, and also Pulmonary Disease.
- Does Mark W. Smith accept Medicare assignment?
- Yes. Medicare's clinician data says Mark W. Smith 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 Mark W. Smith?
- (661) 948-8000, as listed in official Medicare / NPI Registry data.
- What is Mark W. Smith's NPI number?
- 1326111790. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Mark W. Smith works
Medicare's Facility Affiliation Data lists Mark W. Smith at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Antelope Valley HospitalLancaster, CA · Acute Care Hospital · CCN 050056
- CHRISTUS Mother Frances HospitalTyler, TX · Acute Care Hospital · CCN 450102
Practice locations
Addresses where Mark W. Smith is enrolled with Medicare (CMS data updated 2026-10-02).
- 44215 15th St W, Suite 105Lancaster, CA 93534 (661) 948‑8000
- 620 S Fleishel Ave, CHRISTUS Trinity ClinicTyler, TX 75701 (903) 606‑4900
- 630 S Fleishel AveTyler, TX 75701 (903) 606‑5560
- 800 E Dawson St, CHRISTUS Trinity ClinicTyler, TX 75701 (903) 510‑1186
Group practices
Medicare enrollment lists Mark W. Smith as a member of these groups (CMS data updated 2026-10-02).
- CHRISTUS Trinity Clinic Texas1,540 clinicians in the group
- Av Critical Care Inc12 clinicians in the group
Specialties
- Internal Medicineprimary
- Pulmonary Diseasealso
Other internal medicine doctors in Lancaster
Clinicians with the same Medicare primary specialty in Lancaster, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Southern California Keck School Of Medicine |
| Graduation year | 2005 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1326111790 |
| 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