Quick answers
- Which hospitals does Mark W. Deseran work at?
- Medicare's official clinician data lists Mark W. Deseran at 5 hospitals: Adventist Health Bakersfield, Adventist Health Hanford, Adventist Health Howard Memorial, Adventist Health St Helena and Adventist Health Ukiah Valley. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Mark W. Deseran see patients?
- Medicare's clinician data lists 23 practice locations, including Willits, CA, Saint Helena, CA and Hemet, CA. Call before your visit to confirm the address.
- What is Mark W. Deseran's specialty?
- Medicare lists Diagnostic Radiology as the primary specialty.
- Does Mark W. Deseran accept Medicare assignment?
- Yes. Medicare's clinician data says Mark W. Deseran 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. Deseran?
- (707) 459-6801, as listed in official Medicare / NPI Registry data.
- What is Mark W. Deseran's NPI number?
- 1730126467. 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. Deseran works
Medicare's Facility Affiliation Data lists Mark W. Deseran at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Adventist Health BakersfieldBakersfield, CA · Acute Care Hospital · CCN 050455
- Adventist Health HanfordHanford, CA · Acute Care Hospital · CCN 050121
- Adventist Health Howard MemorialWillits, CA · Critical Access Hospital · CCN 051310
- Adventist Health St HelenaSaint Helena, CA · Acute Care Hospital · CCN 050013
- Adventist Health Ukiah ValleyUkiah, CA · Acute Care Hospital · CCN 050301
Practice locations
Addresses where Mark W. Deseran is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 23; the Medicare profile lists all.
- 1 Marcela DrWillits, CA 95490 · Willits Hospital Inc (707) 459‑6801
- 10 Woodland RdSaint Helena, CA 94574 (707) 963‑3611
- 1117 E Devonshire AveHemet, CA 92543 (951) 652‑2811
- 115 Mall DrHanford, CA 93230 · Hanford Community Hospital (559) 582‑9000
- 125 Mall Dr, Suite 305Hanford, CA 93230 · Hanford Community Hospital (559) 537‑0440
Group practices
Medicare enrollment lists Mark W. Deseran as a member of these groups (CMS data updated 2026-10-02).
- USC Care Medical Group Inc1,380 clinicians in the group
- Ukiah Adventist Hospital135 clinicians in the group
- Seven Star Hospital Associates Inc126 clinicians in the group
- Advanced Radiology and Interventional Associates Inc104 clinicians in the group
- Rideout Memorial Hospital87 clinicians in the group
- St. Helena Hospital84 clinicians in the group
Specialties
- Diagnostic Radiologyprimary
Other radiologists in Willits
Clinicians with the same Medicare primary specialty in Willits, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Southern California Keck School Of Medicine |
| Graduation year | 1988 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1730126467 |
| 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