Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Howard J Gerstein, MD

Family Medicine Physician in Lancaster, PA · enumerated 2006 · practices at Stephen Diamantoni & Associates Family Practice PC.

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

National Provider Identifier

1346298999

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Registry record

Entity type Individual (Type 1)

Name Dr. Howard J Gerstein

Credential MD

Sex Male

Practice address 734 N Franklin St, Lancaster, PA, 17602

Phone (717) 295-2323

Fax (717) 295-7294

Enumeration date May 5, 2006

Last updated in NPPES Jun 7, 2011

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License MDO4O383 (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
0013918010001	Medicaid	PA	-
158841	Other	PA	MEDICARE GROUP NUMBER

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 Howard Gerstein practice?

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

What is the NPI number for Howard Gerstein?

The National Provider Identifier (NPI) for Howard Gerstein is 1346298999, 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 2011-06-07.