John Anthony Downey, M.D.
Anesthesiology Physician · San Leandro, CA
John Anthony Downey, M.D. is an anesthesiology physician with a practice address in San Leandro, California, and NPI 1306924154, issued on Nov 1, 2006. Check the license (California G77914, as entered in NPPES) on the Medical Board of California; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- John Anthony Downey
- Credential
- M.D.
- Primary taxonomy
- Anesthesiology Physician 207L00000X
- License number
- G77914 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2500 Merced Street, San Leandro, CA 94577
- Phone
- (510) 454-1000
- Enumerated
- Nov 1, 2006
- Record last updated
- Jun 30, 2015 (not updated in 11 years: call before relying on the address or phone)
- Medicaid ID
- 00G779140 CA
- Entity
- Type 1 · individual
8 nearest anesthesiology physician records → All 7,571 in California → Look up another NPI →
Also registered at 2500 Merced Street
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Brian Au, PHARM DPharmacist1497803670
- Jacob Bayani, C.R.N.ACertified Registered Nurse Anesthetist1285690446
- Mary Ann Bloyer, C.N.M.Advanced Practice Midwife1003952276
- Jungsuk Byun, PHARMPharmacist1174675029
- Linda Chang, PHARM DPharmacist1629126826
- Chunting Chuang, PHARM DPharmacist1134394018
Verify John Anthony Downey in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G77914Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
John Anthony Downey among 7,571 anesthesiology physician records in California
John Anthony Downey, M.D. 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 not. Its NPI, issued in 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 53% newer
- In a Medicare fileNo · 71% of these records are
- In the CMS Doctors and Clinicians fileNo · 64% of these records are
- Record last updated2015 · 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. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 7,571 in California → Every provider in San Leandro → Anesthesiology Physician nationwide →
The 8 anesthesiology physician records with the nearest ZIP codes
- Jayaprada Achanta, M.D.San Leandro, CA 945771053463851
- Richard Cummings, M.D.San Leandro, CA 945771275611030
- Michael Halperin, MDSan Leandro, CA 945771932145018
- Deborah Hong Lee, M.D.San Leandro, CA 945771568620896
- Jason Lau, MDSan Leandro, CA 945771326205154
- Anne Nooney, M.D.San Leandro, CA 945771689752438
- Sung-Keun Park, M.D.San Leandro, CA 945771346274909
- Anupama Pathak, MDSan Leandro, CA 945771639241474
Common questions
What is John Anthony Downey, M.D.'s NPI number?
John Anthony Downey, M.D.'s National Provider Identifier (NPI) is 1306924154, issued on Nov 1, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John Anthony Downey, M.D. located?
The NPPES record lists a practice address at 2500 Merced Street, San Leandro, CA, 94577. Phone: (510) 454-1000. Providers update this record themselves, so call before visiting.
How can I verify John Anthony Downey, M.D.'s license?
NPPES lists California license number G77914, 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.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. 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.