Quick answers
- Where does Donald J. Widder see patients?
- Medicare's clinician data lists 2 practice locations, including Modesto, CA and Turlock, CA. Call before your visit to confirm the address.
- What is Donald J. Widder's specialty?
- Medicare lists Diagnostic Radiology as the primary specialty.
- Does Donald J. Widder accept Medicare assignment?
- Yes. Medicare's clinician data says Donald J. Widder 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 Donald J. Widder?
- (209) 576-3626, as listed in official Medicare / NPI Registry data.
- What is Donald J. Widder's NPI number?
- 1033287529. 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 Donald J. Widder is enrolled with Medicare (CMS data updated 2026-10-02).
- 1441 Florida AveModesto, CA 95350 (209) 576‑3626
- 3900 Geer RdTurlock, CA 95382 (209) 669‑0600
Group practices
Medicare enrollment lists Donald J. Widder as a member of this group (CMS data updated 2026-10-02).
- Modesto Radiological Medical Group Inc91 clinicians in the group
Specialties
- Diagnostic Radiologyprimary
Other radiologists in Modesto
Clinicians with the same Medicare primary specialty in Modesto, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Stanford University School Of Medicine |
| Graduation year | 1975 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1033287529 |
| 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