Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. Alan W Chang, MD

Individual provider Specialist · NPI 1912992330

Dr. Alan W Chang, MD is a Gastroenterology in Doylestown, Pennsylvania. Qualified in 1998, 28 years ago. Practices with Via Affiliates, a 194-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Pennsylvania.

Years since qualifying
28
Licensed in
PA
In the registry since
2005
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

599 W State St Ste 200
Doylestown, PA 18901-2567
Phone: (215) 345-6050
Fax: (215) 345-6568
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Gastroenterology Physician (primary) Taxonomy 207RG0100X · Licence MD071986L (PA)
Specialist Taxonomy 174400000X · Licence MD071986L (PA)

Record details

NPI number1912992330
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedSeptember 12, 2005
Last updated in NPPESFebruary 28, 2020
Certification dateFebruary 28, 2020

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyGASTROENTEROLOGY
Also practisesINTERNAL MEDICINE
Medical schoolOTHER
Graduated 1998 (28 years in practice)
Group practice Via Affiliates — 194 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations2 on file with Medicare

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