John McMahon, DO

Addiction Medicine · Internal Medicine · Sports Medicine

18+ years in practiceNPI: 1821258062Licensed in NHLicensed in ME

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Credentials & Recognition

Specialties

Addiction MedicineInternal MedicineSports Medicine

NPI sub-specialties

Internal Medicine, Sports Medicine207RS0010X

Internal Medicine, Sports Medicine207RS0010X

Practice Signals

Editorial signals beyond credentials. Patient transparency over opacity. See methodology.

Mid-Level (PA/NP) Use

Doctor-led visits

Years in Practice

18+ years

Estimated from NPI enumeration date

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Frequently Asked Questions about Dr. John McMahon, DO

Where does Dr. John McMahon, DO practice?+
Dr. John McMahon, DO practices in New Hampshire, NH. 1900 LAFAYETTE RD SUITE A PORTSMOUTH, NH 038015679.
What is Dr. John McMahon, DO's phone number?+
Dr. John McMahon, DO's practice phone is 603-431-1121. Office contact information is verified on the PBCMMG profile.
What does Dr. John McMahon, DO specialize in?+
Dr. John McMahon, DO's primary specialty is Addiction Medicine, with additional focus on Internal Medicine, Sports Medicine.
Is Dr. John McMahon, DO board certified?+
Board certification status for Dr. John McMahon, DO has not been verified in the data sources PBCMMG uses (ABMS, state medical boards). The PBCMMG profile shows their current credential set.
How long has Dr. John McMahon, DO been practicing?+
Dr. John McMahon, DO has been in active practice for 18+ years, based on NPI enumeration and state licensing records.
What is Dr. John McMahon, DO's NPI number?+
Dr. John McMahon, DO's National Provider Identifier (NPI) is 1821258062, registered in the federal NPPES registry.

Profile maintained by Palm Beach County Medical Media Group, Inc. | Data verified from public registries (NPPES, ABMS, state medical boards). Methodology · Editorial Standards

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