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Dr. John Maurice Mahan, M.D.

Psychiatry Physician in Medford, OR · enumerated 2011.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1558652693

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Registry record

Entity type Individual (Type 1)
Name Dr. John Maurice Mahan
Credential M.D.
Sex Male
Practice address 140 S Holly St, Medford, OR, 97501
Phone (541) 774-8201
Fax (541) 774-7979
Enumeration date Apr 24, 2011
Last updated in NPPES Jan 4, 2017

Taxonomy & licenses

2084P0802X Addiction Psychiatry Physician Allopathic & Osteopathic Physicians · License MD176522 (OR) Secondary
2084P0800X Psychiatry Physician Allopathic & Osteopathic Physicians · License MD176522 (OR) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

Where does John Mahan practice?
The practice location on file with NPPES is in Medford, OR. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for John Mahan?
The National Provider Identifier (NPI) for John Mahan is 1558652693, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-01-04.