Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Greg S Swartzentruber, MD

Medical Toxicology (Emergency Medicine) Physician in Harrisburg, PA · enumerated 2009.

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

National Provider Identifier

1740419498

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Registry record

Entity type Individual (Type 1)

Name Dr. Greg S Swartzentruber

Credential MD

Sex Male

Practice address 111 S Front St, Harrisburg, PA, 17101

Phone (717) 988-0000

Fax (717) 782-5716

Enumeration date Jul 2, 2009

Last updated in NPPES Mar 30, 2017

Taxonomy & licenses

207P00000X Emergency Medicine Physician Allopathic & Osteopathic Physicians · License LL31794 (SC) Secondary

207PT0002X Medical Toxicology (Emergency Medicine) Physician Allopathic & Osteopathic Physicians · License MD447664 (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
102834739	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 Greg Swartzentruber?

The National Provider Identifier (NPI) for Greg Swartzentruber is 1740419498, a Type 1 (individual) record in the CMS NPPES registry.

Where does Greg Swartzentruber practice?

The practice location on file with NPPES is in Harrisburg, PA. 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 2017-03-30.