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

Timothy Euiwon Byun, MD

Individual provider Hematology & Oncology Physician · NPI 1871545012

Timothy Euiwon Byun, MD is a Hematology/Oncology in Orange, California. Graduated from Rush Medical College of Rush University in 1998, 28 years ago. Practices with Providence Medical Foundation, a 1,465-clinician group, works from 2 locations, accepts Medicare assignment and offers telehealth. Licensed in California.

Years since qualifying
28
Trained at
Rush Medical College of Rush University
Licensed in
CA
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

805 W La Veta Ave Ste 101
Orange, CA 92868-3928
Phone: (714) 835-1800
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 1010 W La Veta Ave, Orange, CA 92868-4300 — (714) 835-1800

Specialties & licences

Hematology & Oncology Physician (primary) Taxonomy 207RH0003X · Licence A70195 (CA)

Record details

NPI number1871545012
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 16, 2006
Last updated in NPPESJune 4, 2024
Certification dateJune 4, 2024
Mailing address805 W La Veta Ave Ste 101, Orange, CA 92868-3928

Medicare enrollment

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

Medicare specialtyHEMATOLOGY/ONCOLOGY
Medical schoolRUSH MEDICAL COLLEGE OF RUSH UNIVERSITY
Graduated 1998 (28 years in practice)
Group practice Providence Medical Foundation — 1465 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations5 on file with Medicare

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