Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Terry B Tressler, D.O.

Maternal & Fetal Medicine Physician in Harrisburg, PA · enumerated 2005.

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

National Provider Identifier

1417938267

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Registry record

Entity type Individual (Type 1)

Name Terry B Tressler

Credential D.O.

Sex Male

Practice address 100 South Second Street, Suite 4b, Harrisburg, PA, 17101

Phone (717) 231-8472

Fax (717) 231-8490

Enumeration date Nov 9, 2005

Last updated in NPPES Jul 1, 2019

Taxonomy & licenses

207VM0101X Maternal & Fetal Medicine Physician Allopathic & Osteopathic Physicians · License OS004932L (PA) Primary

DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO credential

Other identifiers

Identifier	Type	State	Issuer
OS004932L	Other	PA	MEDICAL LICENSE
000966549	Medicaid	PA	-
0009665490012	Medicaid	PA	-
000783985	Other	PA	PA BLUESHIELD GROUP NO

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 Terry Tressler practice?

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

What is the NPI number for Terry Tressler?

The National Provider Identifier (NPI) for Terry Tressler is 1417938267, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-07-01.