Randall Lawrence Gaynor, MD
Anesthesiology Physician · San Mateo, CA
Randall Lawrence Gaynor, MD is an anesthesiology physician with a practice address in San Mateo, California, and NPI 1316963028, issued on Jul 14, 2006. Check the license (California A366460, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Randall Lawrence Gaynor
- Credential
- MD
- Primary taxonomy
- Anesthesiology Physician 207L00000X
- License number
- A366460 CA
Self-reported in NPPES; status is on the state search - Practice location
- 104 Saint Matthews Ave, San Mateo, CA 94401
- Phone
- (415) 898-4161
- Enumerated
- Jul 14, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest anesthesiology physician records → All 7,571 in California → Look up another NPI →
Verify Randall Lawrence Gaynor in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A366460Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
96% fewer Medicare Part D claims than the average anesthesiology physician in 2024
16 Medicare Part D claims, against an average of 402 among the 4,319 providers of this specialty who prescribed in Part D.
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.
Randall Lawrence Gaynor among 7,571 anesthesiology physician records in California
Randall Lawrence Gaynor, MD is one of 7,571 anesthesiology physician records with a practice address in California. 71% 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 5% of them.
- NPI issued2006 · 5% of these records are older, 53% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileNo · 64% of these records are
- Record last updated2007 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207L00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Anesthesiology Physician providers in California
There are 7,571 anesthesiology physician records in California.
All 7,571 in California → Every provider in San Mateo → Anesthesiology Physician nationwide →
The 8 anesthesiology physician records with the nearest ZIP codes
- Marcus Corley, MDSan Mateo, CA 944011649211285
- David Glenn, MDSan Mateo, CA 944011194875229
- Paul Wender, M.D.San Mateo, CA 944011396707485
- Joanne Jacobson, MDSan Mateo, CA 944021215073572
- Jimmy Moe, M.D.San Mateo, CA 944031801908322
- La Donna Ford, M.D.Foster City, CA 944041477996072
- Mona Kotecha, M.D.Foster City, CA 944041992827950
- David Altman, MDStanford, CA 943051184351355
Common questions
What is Randall Lawrence Gaynor, MD's NPI number?
Randall Lawrence Gaynor, MD's National Provider Identifier (NPI) is 1316963028, issued on Jul 14, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Randall Lawrence Gaynor, MD located?
The NPPES record lists a practice address at 104 Saint Matthews Ave, San Mateo, CA, 94401. Phone: (415) 898-4161. Providers update this record themselves, so call before visiting.
How can I verify Randall Lawrence Gaynor, MD's license?
NPPES lists California license number A366460, 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 Randall Lawrence Gaynor, MD prescribe under Medicare Part D?
In 2024, Randall Lawrence Gaynor, MD had 16 Medicare Part D claims; the average among anesthesiology physician prescribers was 402. 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.