Timothy Matthew Mahanes, MD
Family Medicine Physician · Eureka, CA
Timothy Matthew Mahanes, MD is a family medicine physician with a practice address in Eureka, California, and NPI 1124552658, issued on Apr 11, 2017. Check the license (California A183482, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Timothy Matthew Mahanes
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- A183482 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2700 Dolbeer St, Eureka, CA 95501
- Phone
- (707) 445-8121
- Enumerated
- Apr 11, 2017
- Record last updated
- Nov 3, 2023
- Medicare enrollment
- Enrolled (PECOS I20241217001392); accepts Medicare assignment
- Medical or professional school
- University Of Louisville School Of Medicine, 2019
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 2700 Dolbeer St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Sammantha Abbott, DPTPhysical Therapist1659704351
- Arshia AkbarStudent in an Organized Health Care Education/Training Program1831941772
- Zeena Al Asadi, MDStudent in an Organized Health Care Education/Training Program1568256683
- Mohd Nour Al Nigrish, MDStudent in an Organized Health Care Education/Training Program1285573360
- Adams Bruce Al-Os, MDStudent in an Organized Health Care Education/Training Program1295538130
- Joseph Arcidi, M.D.Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician1528024544
Verify Timothy Matthew Mahanes in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A183482Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
74% fewer Medicare Part D claims than the average family medicine physician in 2024
907 Medicare Part D claims for 158 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
Most prescribed
- Amlodipine Besylate57 claims
- Atorvastatin Calcium51 claims
- Gabapentin46 claims
- Lisinopril38 claims
- Losartan Potassium34 claims
- Tamsulosin Hcl28 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.
Bills Medicare through one group practice
- Open Door Community Health CentersCrescent City, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Timothy Matthew Mahanes among 17,133 family medicine physician records in California
Timothy Matthew Mahanes, MD is one of 17,133 family medicine 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 2017, is newer than 79% of them.
- NPI issued2017 · 79% of these records are older, 18% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2019 · median 2005 among the 10,652 with a school on file
- Record last updated2023 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
48 family medicine physician records list a practice address in Eureka
They are 48 of the 2,854 NPPES records with a practice address in Eureka, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Eureka → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Laurence Badgley, M.D.Eureka, CA 955011477647287
- Allison Burton, MDEureka, CA 955011255320438
- Corinne Frugoni, MDEureka, CA 955011639177892
- Hal Grotke, MDEureka, CA 955011790841278
- May Hong, M.D.Eureka, CA 955011811933690
- Willard Hunter, M.D.Eureka, CA 955011477589323
- Steven Kamelgarn, MDEureka, CA 955011811907975
- Eva Marshall, M.D.Eureka, CA 955011326009820
Common questions
What is Timothy Matthew Mahanes, MD's NPI number?
Timothy Matthew Mahanes, MD's National Provider Identifier (NPI) is 1124552658, issued on Apr 11, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Timothy Matthew Mahanes, MD located?
The NPPES record lists a practice address at 2700 Dolbeer St, Eureka, CA, 95501. Phone: (707) 445-8121. Providers update this record themselves, so call before visiting.
How can I verify Timothy Matthew Mahanes, MD's license?
NPPES lists California license number A183482, 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 Timothy Matthew Mahanes, MD prescribe under Medicare Part D?
In 2024, Timothy Matthew Mahanes, MD had 907 Medicare Part D claims for 158 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.