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

Mona Pinghua Chang, MD

Family Medicine Physician in Williamsport, PA · enumerated 2006.

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

National Provider Identifier

1639159825

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Registry record

Entity type Individual (Type 1)
Name Mona Pinghua Chang
Credential MD
Sex Female
Practice address Williamsport, PA, 17701
Phone (570) 326-4118
Fax (570) 326-5533
Enumeration date Jan 23, 2006
Last updated in NPPES Apr 13, 2022

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

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License MD044123E (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
461985F6K Other PA MEDICARE PTAN
0011677070001 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

Where does Mona Chang practice?
The practice location on file with NPPES is in Williamsport, PA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Mona Chang?
The National Provider Identifier (NPI) for Mona Chang is 1639159825, 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 2022-04-13.