Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Thomas Frohwein, M.D.

Internal Medicine Physician in Farmington, ME · enumerated 2014.

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

National Provider Identifier

1275941148

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Registry record

Entity type Individual (Type 1)

Name Dr. Thomas Frohwein

Credential M.D.

Sex Male

Practice address 111 Franklin Health Cmns, Farmington, ME, 04938

Phone (207) 779-2456

Fax (207) 779-2496

Enumeration date Jul 23, 2014

Last updated in NPPES Jul 10, 2024

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License D94141 (MD) Secondary

208M00000X Hospitalist Physician Allopathic & Osteopathic Physicians · License MD28018 (ME) Secondary

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 70063 (MT) Secondary

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License MD28018 (ME) 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.

Read the full guide → Validate an NPI →

Frequently asked questions

How do I verify Thomas Frohwein's NPI record?

Cross-check NPI 1275941148 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1275941148 active?

Yes, as of the latest NPPES snapshot, NPI 1275941148 is active (record last updated 2024-07-10).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-07-10.