Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Anna Gibb Hallemeier, MD

Internal Medicine Physician in Simsbury, CT · enumerated 2006.

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

National Provider Identifier

1649333600

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Registry record

Entity type Individual (Type 1)

Name Dr. Anna Gibb Hallemeier

Credential MD

Sex Female

Practice address 720 Hopmeadow St, Simsbury, CT, 06070

Phone (860) 651-3519

Fax (860) 651-4133

Enumeration date Dec 19, 2006

Last updated in NPPES Nov 7, 2022

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 234053 (MA) Secondary

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 044724 (MA) Secondary

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License 234053 (MA) Secondary

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License 044724 (MA) Secondary

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License 044724 (CT) Secondary

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 044724 (CT) Primary

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

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Frequently asked questions

What is the NPI number for Anna Hallemeier?

The National Provider Identifier (NPI) for Anna Hallemeier is 1649333600, a Type 1 (individual) record in the CMS NPPES registry.

Where does Anna Hallemeier practice?

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

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-11-07.