Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dorothy Marie Thayer, MD

Family Medicine Physician in Livermore Falls, ME · enumerated 2006.

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

National Provider Identifier

1427023324

Verified

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Registry record

Entity type Individual (Type 1)

Name Dorothy Marie Thayer

Credential MD

Sex Female

Practice address 38 Union St, Livermore Falls, ME, 04254

Phone (207) 376-9009

Enumeration date Feb 22, 2006

Last updated in NPPES Mar 17, 2019

Taxonomy & licenses

207QA0401X Addiction Medicine (Family Medicine) Physician Allopathic & Osteopathic Physicians · License 011788 (ME) Secondary

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 011788 (ME) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
046910	Other	ME	ANTHEM
3410872	Other	ME	AETNA
404570000	Medicaid	ME	-

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

What is the NPI number for Dorothy Thayer?

The National Provider Identifier (NPI) for Dorothy Thayer is 1427023324, a Type 1 (individual) record in the CMS NPPES registry.

Where does Dorothy Thayer practice?

The practice location on file with NPPES is in Livermore Falls, ME. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

Browse all →

Mary Dunlap Family Nurse Practitioner · Livermore Falls, ME NPI 1164494662 Eleanore Schneid Family Nurse Practitioner · Livermore Falls, ME NPI 1093780983 Mary Fredricks Clinical Social Worker · Livermore Falls, ME NPI 1376510412 Michael Rowland Family Medicine Physician · Livermore Falls, ME NPI 1568538940 Robin Duplessis Addiction (Substance Use Disorder) Counselor · Livermore Falls, ME NPI 1174195606 Candace Arsenault Addiction (Substance Use Disorder) Counselor · Livermore Falls, ME NPI 1508438045

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-03-17.