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

Individual provider Gastroenterology Physician · NPI 1104884238

Ann Ouyang, MD is a Gastroenterology in Hershey, Pennsylvania. Qualified in 1974, 52 years ago. Practices with The Milton S Hershey Medical Center Physicians Group, a 1,595-clinician group and accepts Medicare assignment. Licensed in Pennsylvania.

Years since qualifying
52
Licensed in
PA
In the registry since
2006
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

500 University Dr
Hershey, PA 17033
Phone: (717) 531-4950
Fax: (717) 531-4870
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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 MD036717L (PA)

Record details

NPI number1104884238
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 1, 2006
Last updated in NPPESJuly 5, 2018
Mailing addressPo Box 858, Mc A410, Hershey, PA 17033-0858

Medicare enrollment

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

Medicare specialtyGASTROENTEROLOGY
Medical schoolOTHER
Graduated 1974 (52 years in practice)
Group practice The Milton S Hershey Medical Center Physicians Group — 1595 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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