Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Ms. Gretchen S. Welge, RPH

Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist in Mechanicsburg, PA · enumerated 2008.

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

National Provider Identifier

1730334186

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Registry record

Entity type Individual (Type 1)

Name Ms. Gretchen S. Welge

Credential RPH

Sex Female

Practice address Mechanicsburg, PA, 17050

Phone (717) 728-9859

Enumeration date Nov 26, 2008

Last updated in NPPES Nov 26, 2008

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

1835P0018X Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist Pharmacy Service Providers · License RP037918R (PA) Primary

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

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 Gretchen Welge?

The National Provider Identifier (NPI) for Gretchen Welge is 1730334186, a Type 1 (individual) record in the CMS NPPES registry.

Where does Gretchen Welge practice?

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

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-11-26.