Quick answers
- Where does Arthur S. Watanabe see patients?
- Medicare's clinician data lists 3 practice locations, including Liberty Lake, WA, Antioch, CA and Fremont, CA. Call before your visit to confirm the address.
- What is Arthur S. Watanabe's specialty?
- Medicare lists Diagnostic Radiology as the primary specialty.
- Does Arthur S. Watanabe accept Medicare assignment?
- Yes. Medicare's clinician data says Arthur S. Watanabe 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 Arthur S. Watanabe?
- (855) 504-4544, as listed in official Medicare / NPI Registry data.
- What is Arthur S. Watanabe's NPI number?
- 1295804748. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where Arthur S. Watanabe is enrolled with Medicare (CMS data updated 2026-10-02).
- 321 S Shoreline DrLiberty Lake, WA 99019 (855) 504‑4544
- 3450 Hillcrest AveAntioch, CA 94531 (925) 757‑2100
- 39465 Paseo Padre Pkwy, Suite 1000Fremont, CA 94538 (510) 490‑0961
Group practices
Medicare enrollment lists Arthur S. Watanabe as a member of these groups (CMS data updated 2026-10-02).
- Halo Medical Group20 clinicians in the group
- Inview Imaging Diagnostics Inc a Professional Medical Corporation19 clinicians in the group
Specialties
- Diagnostic Radiologyprimary
Other radiologists in Washington
Clinicians with the same Medicare primary specialty in Washington — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Cincinnati College Of Medicine |
| Graduation year | 1985 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1295804748 |
| 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 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