John P. Gambin, MD
Neurology Physician · Eureka, CA
John P. Gambin, MD is a neurology physician with a practice address in Eureka, California, and NPI 1588622955, issued on May 3, 2006. Check the license (California A24766, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- John P. Gambin
- Credential
- MD
- Primary taxonomy
- Neurology Physician 2084N0400X
- License number
- A24766 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2828 Oneil LN, Eureka, CA 95503
- Phone
- (707) 443-9385
- Enumerated
- May 3, 2006
- Record last updated
- Feb 23, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (707) 443-0258
- Medicaid ID
- 00A247660 CA
- Entity
- Type 1 · individual
8 nearest neurology physician records → All 2,339 in California → Look up another NPI →
Also registered at 2828 Oneil LN
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Gary Parkinson, EMT-IINeuroscience Registered Nurse1417122656
Verify John P. Gambin in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A24766Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average neurology physician in 2024
19 Medicare Part D claims, against an average of 1,370 among the 15,005 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of 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.
John P. Gambin among 2,339 neurology physician records in California
John P. Gambin, MD is one of 2,339 neurology 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 4% of them.
- NPI issued2006 · 4% of these records are older, 59% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileNo · 70% of these records are
- Record last updated2010 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084N0400X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Neurology Physician providers in California
There are 2,339 neurology physician records in California.
All 2,339 in California → Every provider in Eureka → Neurology Physician nationwide →
The 8 neurology physician records with the nearest ZIP codes
- Donald Iverson, MDEureka, CA 955031356309728
- Melissa McKenzie, DOEureka, CA 955031861450876
- Thomas Krenek, MDEureka, CA 955011558329920
- Walid MassarwehUkiah, CA 954821396867412
- David Greenberg, M.D.Sonoma, CA 954761336481225
- Allan Bernstein, MDSebastopol, CA 954721992889067
- Camille Keene, M.D.Lakeport, CA 954531780896951
- Krithika Umesh Peshwe, MDClearlake, CA 954221093342628
Common questions
What is John P. Gambin, MD's NPI number?
John P. Gambin, MD's National Provider Identifier (NPI) is 1588622955, issued on May 3, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John P. Gambin, MD located?
The NPPES record lists a practice address at 2828 Oneil LN, Eureka, CA, 95503. Phone: (707) 443-9385. Providers update this record themselves, so call before visiting.
How can I verify John P. Gambin, MD's license?
NPPES lists California license number A24766, 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 John P. Gambin, MD prescribe under Medicare Part D?
In 2024, John P. Gambin, MD had 19 Medicare Part D claims; the average among neurology physician prescribers was 1,370. 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.