John Maurice Mahan, M.D.
Psychiatry Physician · Medford, OR
John Maurice Mahan, M.D. is a psychiatry physician with a practice address in Medford, Oregon, and NPI 1558652693, issued on Apr 24, 2011. Check the license (Oregon MD176522, as entered in NPPES) on the Oregon Medical Board; the Medicare figures below come from public CMS files.
- Name
- John Maurice Mahan
- Credential
- M.D.
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- MD176522 OR
Self-reported in NPPES; status is on the state search - Practice location
- 140 S Holly St, Medford, OR 97501
- Phone
- (541) 774-8201
- Enumerated
- Apr 24, 2011
- Record last updated
- Jan 4, 2017 (not updated in 9 years: call before relying on the address or phone)
- Fax
- (541) 774-7979
- Medicare enrollment
- Enrolled (PECOS I20161214001060); accepts Medicare assignment
- Medical or professional school
- Oregon Health & Sciences Univ School Of Dentistry, 2011
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 764 in Oregon → Look up another NPI →
Also registered at 140 S Holly St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Xavier Arthur, QMHAAddiction (Substance Use Disorder) Counselor1952074221
- Janis Austermuehle, NCC, LPCProfessional Counselor1780927343
- Amanda Bans, LCSWMental Health Counselor1437501285
- Leanna Blakely, QMHA2Case Manager/Care Coordinator1184452211
- Jessica Blankenship, B.S.Case Manager/Care Coordinator1467702415
- Dana Bogdanove, PSSPeer Specialist1396351730
Verify John Maurice Mahan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersOregon Medical Board
Search for license MD176522Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
12% fewer Medicare Part D claims than the average psychiatry physician in 2024
880 Medicare Part D claims for 31 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 5% of claims.
Most prescribed
- Clozapine94 claims
- Duloxetine Hcl71 claims
- Prazosin Hcl70 claims
- Clonazepam56 claims
- Buspirone Hcl47 claims
- Olanzapine43 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
- County OF JacksonMedford, OR
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John Maurice Mahan among 764 psychiatry physician records in Oregon
John Maurice Mahan, M.D. is one of 764 psychiatry physician records with a practice address in Oregon. 59% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2011, is newer than 69% of them.
- NPI issued2011 · 69% of these records are older, 29% newer
- In a Medicare fileYes · 59% of these records are
- In the CMS Doctors and Clinicians fileYes · 39% of these records are
- Graduated2011 · median 2009 among the 300 with a school on file
- Record last updated2017 · 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 2084P0800X and a Oregon practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Psychiatry Physician providers in Oregon
There are 764 psychiatry physician records in Oregon.
All 764 in Oregon → Every provider in Medford → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Jackson Dempsey, MDMedford, OR 975011174678312
- Luis Oxholm, D.O.Medford, OR 975011407843725
- Timothy ReedMedford, OR 975011497778500
- Sam Sorrentino, MDMedford, OR 975011154940401
- Linda McClellan, DO PHDWhite City, OR 975031851389118
- Harold Tiffany, D.O.White City, OR 975031831108372
- Beverly Young, MDWhite City, OR 975031679675599
- Jacqueline Amato, M.D.Medford, OR 975041295707016
Common questions
What is John Maurice Mahan, M.D.'s NPI number?
John Maurice Mahan, M.D.'s National Provider Identifier (NPI) is 1558652693, issued on Apr 24, 2011. An NPI identifies a provider in billing; it is not a license.
Where is John Maurice Mahan, M.D. located?
The NPPES record lists a practice address at 140 S Holly St, Medford, OR, 97501. Phone: (541) 774-8201. Providers update this record themselves, so call before visiting.
How can I verify John Maurice Mahan, M.D.'s license?
NPPES lists Oregon license number MD176522, as entered by the provider. Search the Oregon Medical Board at https://www.oregon.gov/OMB/Pages/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does John Maurice Mahan, M.D. prescribe under Medicare Part D?
In 2024, John Maurice Mahan, M.D. had 880 Medicare Part D claims for 31 beneficiaries; the average among psychiatry physician prescribers was 1,000. 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.