NPI Portal NPI Lookup & Verification

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

Dr. Anne C Weaver, M.D.

Internal Medicine Physician in Amherst, MA · enumerated 2005.

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

National Provider Identifier

1083612345

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Registry record

Entity type Individual (Type 1)
Name Dr. Anne C Weaver
Credential M.D.
Sex Female
Practice address Amherst, MA, 01002
Phone (413) 549-8888
Fax (413) 549-8886
Enumeration date Jul 11, 2005
Last updated in NPPES Aug 27, 2013

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

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 213299 (MA) Primary
208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License 213299 (MA) Secondary
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
0195090 Medicaid MA -
692597 Other MD HARVARD PILGRIM
213299 Other MA CONNECTICARE
213299 Other MD TUFTS
J24836 Other MD BLUE CROSS
30189 Other MA HEALTH NEW ENGLAND
2864065 Other MD AETNA

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 Anne Weaver practice?
The practice location on file with NPPES is in Amherst, MA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Anne Weaver?
The National Provider Identifier (NPI) for Anne Weaver is 1083612345, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-08-27.