Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Thomas P. McMahon, MD, Inc

Organization Gastroenterology Physician · NPI 1396816617

Thomas P. McMahon, MD, Inc is a Gastroenterology Physician in Portsmouth, Rhode Island. Licensed in Rhode Island. Registered with an NPI since 2006.

Licensed in
RI
In the registry since
2006
What do these letters mean?
Inc — Incorporated
A form of business registration, not a clinical qualification.

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Practice location Address checks out

110 Clock Tower Sq
Portsmouth, RI 02871-1396
Phone: (401) 293-5600
Fax: (401) 293-5604
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Gastroenterology Physician (primary) Taxonomy 207RG0100X · Licence 6825 (RI)

Record details

NPI number1396816617
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Thomas McMahon — Owner · (401) 293-5600
NPI enumeratedNovember 10, 2006
Last updated in NPPESMay 20, 2008
Mailing address110 Clock Tower Sq, Portsmouth, RI 02871-1396

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