Quick answers
- Does William I. Feske accept Medicare assignment?
- Yes. Medicare's clinician data says William I. Feske accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does William I. Feske see?
- In 2024, CMS data shows 1,288 Original Medicare patients and 68,222 services for William I. Feske. This counts Original Medicare only and measures volume, not quality.
- What is William I. Feske's NPI number?
- 1689652653. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for William I. Feske, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 1,288 |
|---|---|
| Services billed to Medicare | 68,222 |
| Different services or procedures | 124 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml (Q9967)34,900 services
- Injection, gadoterate meglumine, 0.1 ml (A9575)24,161 services
- Low osmolar contrast material, 200-299 mg/ml iodine concentration, per ml (Q9966)6,200 services
- 3d radiographic procedure (76376)599 services
- Ct scan of abdomen and pelvis with contrast (74177)221 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High cholesterol75%
- High blood pressure69%
- Arthritis64%
- Ischemic heart disease42%
- Diabetes33%
- Osteoporosis26%
Practice locations
Addresses where William I. Feske is enrolled with Medicare (CMS data updated October 2, 2026).
- 2827 Wilshire BlvdSanta Monica, CA 90403 (310) 829‑9788
- 8727 Beverly BlvdWest Hollywood, CA 90048 (424) 382‑1051
Group practices
Medicare enrollment lists William I. Feske as a member of these groups (CMS data updated October 2, 2026).
- Medical Imaging Center of Southern California7 clinicians in the group
- Medical Imaging Center of Southern California-Beverly Hills Inc4 clinicians in the group
Specialties
- Diagnostic Radiologyprimary
Other radiologists in Santa Monica
Clinicians with the same Medicare primary specialty in Santa Monica, CA — not a recommendation.
Other clinicians in Medical Imaging Center of Southern California
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Minnesota Medical School |
| Graduation year | 1990 (36 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1689652653 |
| 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
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- 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