Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. Gregory Diehl, RPH

Pharmacist in Maple Glen, PA · enumerated 2010.

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

National Provider Identifier

1033419080

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Registry record

Entity type Individual (Type 1)

Name Mr. Gregory Diehl

Credential RPH

Sex Male

Practice address 1925 Norristown Rd, Maple Glen, PA, 19002

Phone (215) 643-2880

Fax (215) 643-7544

Enumeration date Oct 25, 2010

Last updated in NPPES Oct 25, 2010

Taxonomy & licenses

183500000X Pharmacist Pharmacy Service Providers · License RP030578L (PA) Primary

RPH · Registered Pharmacist: A licensed pharmacist registered with a state board of pharmacy. About the RPH credential

Other identifiers

Identifier	Type	State	Issuer
RP030578L	Other	PA	PHARMACIST LICENSE

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 specialty is Gregory Diehl?

Gregory Diehl is registered in NPPES with the primary taxonomy of Pharmacist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-10-25.