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

Timothy Seijung Oh, MD

Individual provider Hematology & Oncology Physician · NPI 1750840856

Timothy Seijung Oh, MD is a Hematology/Oncology in Chicago, Illinois. Graduated from Wake Forest University School of Medicine in 2019, 7 years ago. Works from 2 locations. Licensed in Illinois.

Years since qualifying
7
Trained at
Wake Forest University School of Medicine
Licensed in
IL
In the registry since
2019
Specialties on file
3
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

251 E Huron St
Chicago, IL 60611-3055
Phone: (312) 926-2000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 2650 Ridge Ave, Evanston, IL 60201-1700 — (847) 570-2112

Specialties & licences

Hematology & Oncology Physician (primary) Taxonomy 207RH0003X · Licence 036159429 (IL)
Internal Medicine Physician Taxonomy 207R00000X · Licence 036159429 (IL)
Hospitalist Physician Taxonomy 208M00000X · Licence 036159429 (IL)

Record details

NPI number1750840856
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 18, 2019
Last updated in NPPESJuly 9, 2026
Certification dateJuly 9, 2026

Medicare enrollment

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

Medicare specialtyHEMATOLOGY/ONCOLOGY
Also practisesINTERNAL MEDICINE
Medical schoolWAKE FOREST UNIVERSITY SCHOOL OF MEDICINE
Graduated 2019 (7 years in practice)
Accepts Medicare assignment Not indicated
Practice locations2 on file with Medicare

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