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

Individual provider Radiation Oncology Physician · NPI 1205831922

Dr. Tapan Roy, MD is a Radiation Oncology in Tustin, California. Qualified in 1974, 52 years ago. Practices with Stephen William Doggett MD PA, a 5-clinician group and accepts Medicare assignment. Licensed in California and Missouri.

Years since qualifying
52
Licensed in
CA, MO
In the registry since
2005
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

14662 Newport Ave
Tustin, CA 92780-6064
Phone: (714) 573-9500
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Radiation Oncology Physician (primary) Taxonomy 2085R0001X · Licence C51244 (CA)
Radiation Oncology Physician Taxonomy 2085R0001X · Licence R4B37 (MO)

Record details

NPI number1205831922
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedJune 17, 2005
Last updated in NPPESJanuary 17, 2022
Certification dateJanuary 17, 2022
Mailing address7330 Hickorywood Ln, Pleasanton, CA 94566-3584

Medicare enrollment

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

Medicare specialtyRADIATION ONCOLOGY
Medical schoolOTHER
Graduated 1974 (52 years in practice)
Group practice Stephen William Doggett Md Pa — 5 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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