Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Melinda Thacker, M.D.

Otolaryngology Physician in Worcester, MA · enumerated 2009.

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

National Provider Identifier

1255579561

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Registry record

Entity type Individual (Type 1)

Name Dr. Melinda Thacker

Credential M.D.

Sex Female

Practice address 48 Elm St, Worcester, MA, 01609

Phone (508) 757-0330

Enumeration date Jan 23, 2009

Last updated in NPPES Dec 19, 2017

Taxonomy & licenses

207Y00000X Otolaryngology Physician Allopathic & Osteopathic Physicians · License 250085 (MA) 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.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does Melinda Thacker practice?

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

What is the NPI number for Melinda Thacker?

The National Provider Identifier (NPI) for Melinda Thacker is 1255579561, 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 2017-12-19.