Quick answers
- Which hospitals does John M. Webb work at?
- Medicare's official clinician data lists John M. Webb at 1 hospital: Kaiser Foundation Hosp So Sacramento. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does John M. Webb see patients?
- Medicare's clinician data lists 5 practice locations, including San Jose, CA, Sacramento, CA and Stockton, CA. Call before your visit to confirm the address.
- What is John M. Webb's specialty?
- Medicare lists Diagnostic Radiology as the primary specialty, and also Nuclear Medicine.
- Does John M. Webb accept Medicare assignment?
- Yes. Medicare's clinician data says John M. Webb 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 John M. Webb?
- (408) 972-3000, as listed in official Medicare / NPI Registry data.
- What is John M. Webb's NPI number?
- 1255535647. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where John M. Webb works
Medicare's Facility Affiliation Data lists John M. Webb at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Kaiser Foundation Hosp So SacramentoSacramento, CA · Acute Care Hospital · CCN 050674
Practice locations
Addresses where John M. Webb is enrolled with Medicare (CMS data updated 2026-10-02).
- 250 Hospital PkwySan Jose, CA 95119 (408) 972‑3000
- 280 Hospital PkwySan Jose, CA 95119 (408) 972‑3000
- 6600 Bruceville RdSacramento, CA 95823 (916) 688‑2000
- 7373 W LaneStockton, CA 95210 (209) 476‑2000
- 975 Sereno DrVallejo, CA 94589 (707) 651‑1000
Group practices
Medicare enrollment lists John M. Webb as a member of this group (CMS data updated 2026-10-02).
- Permanente Medical Group Inc10,996 clinicians in the group
Specialties
- Diagnostic Radiologyprimary
- Nuclear Medicinealso
Other radiologists in San Jose
Clinicians with the same Medicare primary specialty in San Jose, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2005 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1255535647 |
| 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