Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Michael B Doyle, M.D.

Reproductive Endocrinology Physician in Fairfield, CT · enumerated 2006.

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

National Provider Identifier

1437267465

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Registry record

Entity type Individual (Type 1)

Name Dr. Michael B Doyle

Credential M.D.

Sex Male

Practice address Fairfield, CT, 06824

Phone (203) 209-4911

Enumeration date Aug 29, 2006

Last updated in NPPES Mar 7, 2023

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

207VE0102X Reproductive Endocrinology Physician Allopathic & Osteopathic Physicians · License 029752 (CT) 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
625019	Other	CT	CONNECTICARE
0155890	Other	CT	CIGNA
029752	Other	CT	STATE LICENSE
4416733	Other	CT	AETNA
9028787	Other	CT	PHCS
010029752CT03	Other	CT	BLUE CROSS BLUE SHIELD
223768276	Other	CT	UNITED HEALTHCARE
ZS615	Other	CT	OXFORD
OV8037	Other	CT	HEALTHNET

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

Where does Michael Doyle practice?

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

What is the NPI number for Michael Doyle?

The National Provider Identifier (NPI) for Michael Doyle is 1437267465, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-03-07.