Quick answers
- Which hospitals does William M. Dunn work at?
- Medicare's official clinician data lists William M. Dunn at 1 hospital: Tri-City Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does William M. Dunn see patients?
- Medicare's clinician data lists 2 practice locations, including Malibu, CA and Oceanside, CA. Call before your visit to confirm the address.
- What is William M. Dunn's specialty?
- Medicare lists Diagnostic Radiology as the primary specialty.
- Does William M. Dunn accept Medicare assignment?
- Yes. Medicare's clinician data says William M. Dunn 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 William M. Dunn?
- (866) 558-4329, as listed in official Medicare / NPI Registry data.
- What is William M. Dunn's NPI number?
- 1871512111. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where William M. Dunn works
Medicare's Facility Affiliation Data lists William M. Dunn at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Tri-City Medical CenterOceanside, CA · Acute Care Hospital · CCN 050128
Practice locations
Addresses where William M. Dunn is enrolled with Medicare (CMS data updated 2026-10-02).
- 2701 Las Flores Canyon RdMalibu, CA 90265 (866) 558‑4329
- 4002 Vista WayOceanside, CA 92056 (858) 658‑6500
Group practices
Medicare enrollment lists William M. Dunn as a member of this group (CMS data updated 2026-10-02).
- IHS Radiology Medical Group Inc65 clinicians in the group
Specialties
- Diagnostic Radiologyprimary
Other radiologists in California
Clinicians with the same Medicare primary specialty in California — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Loyola University Of Chicago, Stritch School Of Medicine |
| Graduation year | 1978 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1871512111 |
| 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