Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Frederic A Stelzer, MD

Gastroenterology Physician in Allentown, PA · enumerated 2005.

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

National Provider Identifier

1962405175

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Registry record

Entity type Individual (Type 1)

Name Dr. Frederic A Stelzer

Credential MD

Sex Male

Practice address 1501 N Cedar Crest Blvd, Suite 110, Allentown, PA, 18104

Phone (610) 821-2828

Fax (610) 821-7915

Enumeration date May 23, 2005

Last updated in NPPES May 26, 2021

Taxonomy & licenses

207RG0100X Gastroenterology Physician Allopathic & Osteopathic Physicians · License MD018896E (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
0006064820003	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

Is NPI 1962405175 active?

Yes, as of the latest NPPES snapshot, NPI 1962405175 is active (record last updated 2021-05-26).

How do I verify Frederic Stelzer's NPI record?

Cross-check NPI 1962405175 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-05-26.