Quick answers
- Where does Jan Diamond see patients?
- Medicare's clinician data lists 2 practice locations, including Oakland, CA and Berkeley, CA. Call before your visit to confirm the address.
- What is Jan Diamond's specialty?
- Medicare lists Family Practice as the primary specialty.
- Does Jan Diamond accept Medicare assignment?
- Yes. Medicare's clinician data says Jan Diamond 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 Jan Diamond?
- (510) 563-4300, as listed in official Medicare / NPI Registry data.
- What is Jan Diamond's NPI number?
- 1326116898. 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 Jan Diamond is enrolled with Medicare (CMS data updated 2026-10-02).
- 10700 Macarthur Blvd, Suite 14bOakland, CA 94605 (510) 563‑4300
- 2031 6th StBerkeley, CA 94710 (510) 981‑4200
Group practices
Medicare enrollment lists Jan Diamond as a member of this group (CMS data updated 2026-10-02).
- Lifelong Medical Care73 clinicians in the group
Specialties
- Family Practiceprimary
Other family doctors in Oakland
Clinicians with the same Medicare primary specialty in Oakland, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of California, San Francisco School Of Medicine |
| Graduation year | 1981 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1326116898 |
| 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