Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Jeffrey J Mihalek, M.D.

Obstetrics & Gynecology Physician in Newington, CT · enumerated 2005.

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

National Provider Identifier

1912906579

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Registry record

Entity type Individual (Type 1)

Name Dr. Jeffrey J Mihalek

Credential M.D.

Sex Male

Practice address 375 Willard Ave, Grove Hill Medical Center, Newington, CT, 06111

Phone (860) 666-5111

Fax (860) 666-5153

Enumeration date Jul 18, 2005

Last updated in NPPES Mar 9, 2012

Taxonomy & licenses

207V00000X Obstetrics & Gynecology Physician Allopathic & Osteopathic Physicians · License 035025 (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
001350256	Medicaid	CT	-
01035025	Other	CT	CIGNA PROV ID
134928	Other	CT	WELLCARE MEDICARE
550419	Other	CT	AETNA PROV ID
010035025CT02	Other	CT	BCBS N BCFP PROV ID
004196095	Medicaid	CT	-
P369900	Other	CT	OXFORD PROV ID
060121	Other	CT	HEALTH NET PROV ID
1255448155	Other	CT	GHMC GRP NPI ID
350250	Other	CT	CONNECTICARE PROV ID

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 Jeffrey Mihalek practice?

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

What is the NPI number for Jeffrey Mihalek?

The National Provider Identifier (NPI) for Jeffrey Mihalek is 1912906579, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-03-09.