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

Dr. Yumei Mary Chang, MD

Individual provider Internal Medicine Physician · NPI 1134381908

Dr. Yumei Mary Chang, MD practises Internal Medicine in New York, New York. Graduated from University of California, Geffen School of Medicine in 2007, 19 years ago. Practices with Jgb Rehabilitation Corporation, a 13-clinician group, works from 2 locations, accepts Medicare assignment and offers telehealth. Licensed in Pennsylvania.

Years since qualifying
19
Trained at
University of California, Geffen School of Medicine
Licensed in
PA
In the registry since
2008
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

250 W 64th St
New York, NY 10023
Phone: (212) 769-6300
Fax: (212) 769-7825
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 240 Greenwich St, New York, NY 10007-2163 — (310) 463-5771

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence MD463062 (PA)

Record details

NPI number1134381908
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorYes
NPI enumeratedJuly 1, 2008
Last updated in NPPESJanuary 9, 2026
Certification dateJanuary 9, 2026

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolUNIVERSITY OF CALIFORNIA, GEFFEN SCHOOL OF MEDICINE
Graduated 2007 (19 years in practice)
Group practice Jgb Rehabilitation Corporation — 13 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients27
Services billed 120 a service is one billed item, such as a visit, a test or a procedure
Average patient age69

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Colleagues at Jgb Rehabilitation Corporation

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 13 clinicians in the practice; 10 are shown here.

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