Buff Randall Greider, M.D.
Family Medicine Physician · Sunnyvale, CA
Buff Randall Greider, M.D. is a family medicine physician with a practice address in Sunnyvale, California, and NPI 1811915846, issued on Jul 17, 2006. Check the license (California C-41541, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Buff Randall Greider
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- C-41541 CA
Self-reported in NPPES; status is on the state search - Practice location
- 877 W. Fremont Ave., Suite F-1, Sunnyvale, CA 94087
- Phone
- (408) 736-2304
- Enumerated
- Jul 17, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20051201000512); accepts Medicare assignment
- Medical or professional school
- New York Medical College, 1982
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Verify Buff Randall Greider in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license C-41541Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
88% fewer Medicare Part D claims than the average family medicine physician in 2024
417 Medicare Part D claims for 153 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
Most prescribed
- Losartan Potassium32 claims
- Cephalexin29 claims
- Atorvastatin Calcium22 claims
- Clarithromycin19 claims
- Metformin Hcl18 claims
- Fluticasone Propionate17 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- EL Camino Health Medical Network LLCSan Jose, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Buff Randall Greider among 17,133 family medicine physician records in California
Buff Randall Greider, M.D. is one of 17,133 family medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 6% of them.
- NPI issued2006 · 6% of these records are older, 59% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated1982 · median 2005 among the 10,652 with a school on file
- Record last updated2007 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
33 family medicine physician records list a practice address in Sunnyvale
They are 33 of the 1,690 NPPES records with a practice address in Sunnyvale, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Sunnyvale → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Natalia Abrikosova, M.D.Sunnyvale, CA 940871609061753
- Kevin Fell, MDSunnyvale, CA 940871215990494
- Victoria Ho, M.D.Sunnyvale, CA 940871487219523
- Steven Kim, M.D.Sunnyvale, CA 940871043313992
- Sonali Ladha Ghosh, M.DSunnyvale, CA 940871265798508
- Rajeshwari Nagaraja, M.DSunnyvale, CA 940871932495777
- Lulua Bahrainwala, MD, MSSunnyvale, CA 940861568949709
- Andreea Doaga, MDSunnyvale, CA 940861730387853
Common questions
What is Buff Randall Greider, M.D.'s NPI number?
Buff Randall Greider, M.D.'s National Provider Identifier (NPI) is 1811915846, issued on Jul 17, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Buff Randall Greider, M.D. located?
The NPPES record lists a practice address at 877 W. Fremont Ave., Suite F-1, Sunnyvale, CA, 94087. Phone: (408) 736-2304. Providers update this record themselves, so call before visiting.
How can I verify Buff Randall Greider, M.D.'s license?
NPPES lists California license number C-41541, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Buff Randall Greider, M.D. prescribe under Medicare Part D?
In 2024, Buff Randall Greider, M.D. had 417 Medicare Part D claims for 153 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.