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Lynne Hillis, M.D.

Internal Medicine Physician in New Haven, CT · enumerated 2005.

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

National Provider Identifier

1558367359

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Registry record

Entity type Individual (Type 1)
Name Lynne Hillis
Credential M.D.
Sex Female
Practice address 1453 Whalley Ave, New Haven, CT, 06515
Phone (203) 389-4111
Fax (203) 889-4953
Enumeration date Jun 27, 2005
Last updated in NPPES May 27, 2021

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 031055 (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
0013110557 Medicaid CT -
P404271 Other CT OXFORD
031055 Other CT CONNECTICARE
0470255 Other CT AETNA
110169706 Other CT MEDICARE RAILROAD
D400104641 Other CT MEDICARE ID
010031055CT01 Other CT ANTHEM
OV7607 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.

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Frequently asked questions

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.
What specialty is Lynne Hillis?
Lynne Hillis 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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-05-27.