John Compagno
Specialist · Hercules, CA
John Compagno is a specialist with a practice address in Hercules, California, and NPI 1134125578, issued on Jun 21, 2005. Check the license (California G38126, as entered in NPPES) with the California board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- John Compagno
- Primary taxonomy
- Specialist 174400000X
- License number
- G38126 CA
Self-reported in NPPES; status is on the state search - Practice location
- 712 Alfred Nobel Dr, Hercules, CA 94547
- Phone
- (510) 662-5200
- Enumerated
- Jun 21, 2005
- Record last updated
- Jul 9, 2007 (not updated in 19 years: call before relying on the address or phone)
- Medicaid ID
- 00G381261 CA
- Entity
- Type 1 · individual
8 nearest specialist records → All 5,749 in California → Look up another NPI →
Also registered at 712 Alfred Nobel Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Wayne Garrett, DOClinical Pathology Physician1528111598
Verify John Compagno in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license G38126Check 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 Compagno among 5,749 specialist records in California
John Compagno is one of 5,749 specialist records with a practice address in California. 30% 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 93% newer
- In a Medicare fileNo · 30% of these records are
- In the CMS Doctors and Clinicians fileNo · 19% of these records are
- Record last updated2007 · 77% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 174400000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
3 specialist records list a practice address in Hercules
They are 3 of the 277 NPPES records with a practice address in Hercules, and 5,749 specialist records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 5,749 in California → Every provider in Hercules → Specialist nationwide →
The 8 specialist records with the nearest ZIP codes
- Jennifer Krasnoff, MDHercules, CA 945471548342934
- Mike Lin, MDHercules, CA 945471871027136
- Linda Cannon, R.D.H.Castro Valley, CA 945461063944999
- Catherine Covey, M.D.Castro Valley, CA 945461942213764
- Glen Ellis, C.P.O.Castro Valley, CA 945461023156130
- Elizabeth Hurley, C.O.Castro Valley, CA 945461205962818
- Cynthia Mahoney, M.D.Castro Valley, CA 945461205849031
- Phillip MoiseCastro Valley, CA 945461154702397
Common questions
What is John Compagno's NPI number?
John Compagno's National Provider Identifier (NPI) is 1134125578, issued on Jun 21, 2005. An NPI identifies a provider in billing; it is not a license.
Where is John Compagno located?
The NPPES record lists a practice address at 712 Alfred Nobel Dr, Hercules, CA, 94547. Phone: (510) 662-5200. Providers update this record themselves, so call before visiting.
How can I verify John Compagno's license?
NPPES lists California license number G38126, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity 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. 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.