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

Dr. James Jun Yoon, MD

Individual provider Internal Medicine Physician · NPI 1669903548

Dr. James Jun Yoon, MD is a Hematology/Oncology in New York, New York. Graduated from Icahn School of Medicine at Mount Sinai in 2017, 9 years ago. Practices with Memorial Hematology Lymphoma Group, a 216-clinician group and accepts Medicare assignment. Licensed in New York.

Years since qualifying
9
Trained at
Icahn School of Medicine at Mount Sinai
Licensed in
NY
In the registry since
2017
Specialties on file
3
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

1275 York Ave
New York, NY 10065-6007
Phone: (212) 639-2000
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Medical Oncology Physician (primary) Taxonomy 207RX0202X · Licence 329655 (NY)
Internal Medicine Physician Taxonomy 207R00000X · Licence 329655 (NY)
Hematology (Internal Medicine) Physician Taxonomy 207RH0000X · Licence 329655 (NY)

Record details

NPI number1669903548
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedMarch 23, 2017
Last updated in NPPESAugust 1, 2024
Certification dateAugust 1, 2024

Medicare enrollment

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

Medicare specialtyHEMATOLOGY/ONCOLOGY
Also practisesINTERNAL MEDICINE
Medical schoolICAHN SCHOOL OF MEDICINE AT MOUNT SINAI
Graduated 2017 (9 years in practice)
Group practice Memorial Hematology Lymphoma Group — 216 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Other providers in New York