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

Dr. Alan Chang, MD

Individual provider Endocrinology, Diabetes & Metabolism Physician · NPI 1649408675

Dr. Alan Chang, MD is an Endocrinology in East Setauket, New York. Qualified in 2009, 17 years ago. Practices with Stony Brook Internists University Faculty Practice Corporation, a 428-clinician group, accepts Medicare assignment and offers telehealth. Licensed in New York and Pennsylvania.

Years since qualifying
17
Licensed in
NY, PA
In the registry since
2009
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

4 Technology Dr Ste 104
East Setauket, NY 11733-4080
Phone: (631) 444-0580
Fax: (631) 444-0562
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Endocrinology, Diabetes & Metabolism Physician (primary) Taxonomy 207RE0101X · Licence 301834 (NY)
Endocrinology, Diabetes & Metabolism Physician Taxonomy 207RE0101X · Licence MD452043 (PA)

Record details

NPI number1649408675
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedJune 29, 2009
Last updated in NPPESNovember 4, 2019

Medicare enrollment

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

Medicare specialtyENDOCRINOLOGY
Medical schoolOTHER
Graduated 2009 (17 years in practice)
Group practice Stony Brook Internists University Faculty Practice Corporation — 428 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations4 on file with Medicare

Other providers in East Setauket