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Dr. Alan W Chang, MD

Gastroenterology Physician in Doylestown, PA · enumerated 2005.

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

National Provider Identifier

1912992330

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Registry record

Entity type Individual (Type 1)
Name Dr. Alan W Chang
Credential MD
Sex Male
Practice address 599 W State St, Suite 200, Doylestown, PA, 18901
Phone (215) 345-6050
Fax (215) 345-6568
Enumeration date Sep 12, 2005
Last updated in NPPES Feb 28, 2020

Taxonomy & licenses

174400000X Specialist Other Service Providers · License MD071986L (PA) Secondary
207RG0100X Gastroenterology Physician Allopathic & Osteopathic Physicians · License MD071986L (PA) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD 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.

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Frequently asked questions

What is the NPI number for Alan Chang?
The National Provider Identifier (NPI) for Alan Chang is 1912992330, a Type 1 (individual) record in the CMS NPPES registry.
Where does Alan Chang practice?
The practice location on file with NPPES is in Doylestown, PA. Providers can have multiple locations; NPPES lists the primary practice address.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-02-28.