Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Harry O. Mateer Jr., M.D.

Q: What is the NPI number for Harry Mateer?

The National Provider Identifier (NPI) for Harry Mateer is 1720040066, a Type 1 (individual) record in the CMS NPPES registry.

Obstetrics & Gynecology Physician in Danville, PA · enumerated 2006.

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

National Provider Identifier

1720040066

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Registry record

Entity type Individual (Type 1)

Name Dr. Harry O. Mateer Jr.

Credential M.D.

Sex Male

Practice address 100 N Academy Ave, Danville, PA, 17824

Phone (570) 271-6298

Enumeration date Apr 3, 2006

Last updated in NPPES Aug 21, 2020

Taxonomy & licenses

207V00000X Obstetrics & Gynecology Physician Allopathic & Osteopathic Physicians · License MD028525E (PA) 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
001006985	Medicaid	PA	-

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

What is the NPI number for Harry Mateer?

The National Provider Identifier (NPI) for Harry Mateer is 1720040066, a Type 1 (individual) record in the CMS NPPES registry.

Where does Harry Mateer practice?

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

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-08-21.