Quick answers
- Where does Buff R. Greider see patients?
- Medicare's clinician data lists 2 practice locations, including Mountain View, CA and San Jose, CA. Call before your visit to confirm the address.
- What is Buff R. Greider's specialty?
- Medicare lists Family Practice as the primary specialty, and also Sports Medicine.
- Does Buff R. Greider accept Medicare assignment?
- Yes. Medicare's clinician data says Buff R. Greider 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 Buff R. Greider?
- (650) 988-7667, as listed in official Medicare / NPI Registry data.
- What is Buff R. Greider's NPI number?
- 1811915846. 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 Buff R. Greider is enrolled with Medicare (CMS data updated 2026-10-02).
- 1150 W El Camino RealMountain View, CA 94040 (650) 988‑7667
- 4150 N 1st StSan Jose, CA 95134 (408) 871‑3400
Group practices
Medicare enrollment lists Buff R. Greider as a member of this group (CMS data updated 2026-10-02).
- El Camino Health Medical Network LLC202 clinicians in the group
Specialties
- Family Practiceprimary
- Sports Medicinealso
Other family doctors in Mountain View
Clinicians with the same Medicare primary specialty in Mountain View, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | New York Medical College |
| Graduation year | 1982 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1811915846 |
| 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