Mary Ellen Mahoney, M.D.
Surgery Physician · Eureka, CA
Mary Ellen Mahoney, M.D. is a surgery physician with a practice address in Eureka, California, and NPI 1750352621, issued on Jan 30, 2006. Check the license (California G48569, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Mary Ellen Mahoney
- Credential
- M.D.
- Primary taxonomy
- Surgery Physician 208600000X
- License number
- G48569 CA
Self-reported in NPPES; status is on the state search - Practice location
- 636 Harris St Ste A, Eureka, CA 95503
- Phone
- (707) 476-0690
- Enumerated
- Jan 30, 2006
- Record last updated
- Feb 2, 2024
- Fax
- (707) 476-0692
- Medicaid ID
- 00G485690 CA
- Medicare enrollment
- Enrolled (PECOS I20090603000116); accepts Medicare assignment
- Medical or professional school
- Stanford University School Of Medicine, 1981
- Entity
- Type 1 · individual
8 nearest surgery physician records → All 3,118 in California → Look up another NPI →
Also registered at 636 Harris St Ste A
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Luther Cobb, M.D.Vascular Surgery Physician1386668481
Verify Mary Ellen Mahoney in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G48569Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
16% fewer Medicare Part D claims than the average surgery physician in 2024
124 Medicare Part D claims for 43 beneficiaries, against an average of 147 among the 20,115 providers of this specialty who prescribed in Part D. 17 claims were for opioids.
Most prescribed
- Letrozole35 claims
- Tamoxifen Citrate28 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.
Mary Ellen Mahoney among 3,118 surgery physician records in California
Mary Ellen Mahoney, 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 fileYes · 61% of these records are
- Graduated1981 · median 2003 among the 1,901 with a school on file
- Record last updated2024 · 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
- John Disiere, M.D.Eureka, CA 955031104898675
- 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 Mary Ellen Mahoney, M.D.'s NPI number?
Mary Ellen Mahoney, M.D.'s National Provider Identifier (NPI) is 1750352621, issued on Jan 30, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mary Ellen Mahoney, M.D. located?
The NPPES record lists a practice address at 636 Harris St Ste A, Eureka, CA, 95503. Phone: (707) 476-0690. Providers update this record themselves, so call before visiting.
How can I verify Mary Ellen Mahoney, M.D.'s license?
NPPES lists California license number G48569, 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 Mary Ellen Mahoney, M.D. prescribe under Medicare Part D?
In 2024, Mary Ellen Mahoney, M.D. had 124 Medicare Part D claims for 43 beneficiaries; 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.