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Heidi Ray Doreau, N.P.

Internal Medicine Physician in Lexington, MA · enumerated 2007.

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

National Provider Identifier

1053591644

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Registry record

Entity type Individual (Type 1)
Name Heidi Ray Doreau
Credential N.P.
Sex Female
Practice address 450 Bedford Street, Lexington, MA, 02420
Phone (781) 274-6274
Fax (781) 862-1472
Enumeration date Nov 12, 2007
Last updated in NPPES Apr 10, 2012

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 267791 (MA) Secondary
207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License RN267791 (MA) Primary
NP · Nurse Practitioner: An advanced practice registered nurse with graduate training, licensed to diagnose and treat, often with prescriptive authority. About the NP 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

What specialty is Heidi Doreau?
Heidi Doreau is registered in NPPES with the primary taxonomy of Internal Medicine Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-04-10.