John Eldred Disiere, M.D.
Surgery Physician · Eureka, CA
John Eldred Disiere, M.D. is a surgery physician with a practice address in Eureka, California, and NPI 1104898675, issued on Feb 7, 2006. Check the license (California C42437, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- John Eldred Disiere
- Credential
- M.D.
- Primary taxonomy
- Surgery Physician 208600000X
- License number
- C42437 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3116 Harrison Ave, Eureka, CA 95503
- Phone
- (707) 444-3885
- Enumerated
- Feb 7, 2006
- Record last updated
- Jun 29, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (707) 444-7843
- Entity
- Type 1 · individual
8 nearest surgery physician records → All 3,118 in California → Look up another NPI →
Also registered at 3116 Harrison Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Lawrence Smith, PA-CPhysician Assistant1235205865
- Martin Smukler, M.D.Family Medicine Physician1275523607
Verify John Eldred Disiere in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license C42437Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
93% fewer Medicare Part D claims than the average surgery physician in 2024
11 Medicare Part D claims, against an average of 147 among the 20,115 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 Eldred Disiere among 3,118 surgery physician records in California
John Eldred Disiere, M.D. is one of 3,118 surgery physician records with a practice address in California. 75% 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, 55% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileNo · 61% of these records are
- Record last updated2021 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208600000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Surgery Physician providers in California
There are 3,118 surgery physician records in California.
All 3,118 in California → Every provider in Eureka → Surgery Physician nationwide →
The 8 surgery physician records with the nearest ZIP codes
- Mary Mahoney, M.D.Eureka, CA 955031750352621
- Daniel Diamond, MDEureka, CA 955011467483305
- Thomas Loncar, M.D.Eureka, CA 955011710915319
- Michael Palmer, M.D.Eureka, CA 955011669539862
- Thomas Rydz, M.D.Eureka, CA 955011184781536
- Huy Trieu, M.D.Eureka, CA 955011639404353
- John Vanspeybroeck, M.D.Eureka, CA 955011497832190
- Lance Ludington, M.D.Willits, CA 954901295813889
Common questions
What is John Eldred Disiere, M.D.'s NPI number?
John Eldred Disiere, M.D.'s National Provider Identifier (NPI) is 1104898675, issued on Feb 7, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John Eldred Disiere, M.D. located?
The NPPES record lists a practice address at 3116 Harrison Ave, Eureka, CA, 95503. Phone: (707) 444-3885. Providers update this record themselves, so call before visiting.
How can I verify John Eldred Disiere, M.D.'s license?
NPPES lists California license number C42437, 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 Eldred Disiere, M.D. prescribe under Medicare Part D?
In 2024, John Eldred Disiere, M.D. had 11 Medicare Part D claims; the average among surgery physician prescribers was 147. 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.