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

John K Byun, MD

Individual provider Radiation Oncology Physician · NPI 1528487089

John K Byun, MD is a Radiation Oncology in Stanford, California. Qualified in 2014, 12 years ago. Practices with Stanford Health Care, a 3,085-clinician group, works from 4 locations, accepts Medicare assignment and offers telehealth. Licensed in California and New Jersey.

Years since qualifying
12
Licensed in
CA, NJ
In the registry since
2014
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

300 Pasteur Dr
Stanford, CA 94305-2200
Phone: (650) 723-4000
Show map & directions

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

Additional practice locations (3)

  • 300 Sierra College Dr Ste 150, Grass Valley, CA 95945-5083 — (530) 802-6400
  • 3249 Oak Park Ave, Berwyn, IL 60402-3429 — (708) 783-3403
  • 195 Little Albany St, New Brunswick, NJ 08901-1914 — (732) 253-3939

Specialties & licences

Radiation Oncology Physician (primary) Taxonomy 2085R0001X · Licence C197416 (CA)
Radiation Oncology Physician Taxonomy 2085R0001X · Licence 25MA10129400 (NJ)

Record details

NPI number1528487089
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 14, 2014
Last updated in NPPESSeptember 26, 2025
Certification dateSeptember 26, 2025
Mailing address300 Pasteur Dr, Stanford, CA 94305-2200

Medicare enrollment

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

Medicare specialtyRADIATION ONCOLOGY
Medical schoolOTHER
Graduated 2014 (12 years in practice)
Group practice Stanford Health Care — 3085 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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