Tapan Roy, M.D.
Radiation Oncology Physician · Tustin, CA
Tapan Roy, M.D. is a radiation oncology physician with a practice address in Tustin, California, and NPI 1205831922, issued on Jun 17, 2005. Check the license (California C51244, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Tapan Roy
- Credential
- M.D.
- Primary taxonomy
- Radiation Oncology Physician 2085R0001X
- License numbers
- C51244 CA
R4B37 MO
Self-reported in NPPES; status is on the state search - Practice location
- 14662 Newport Ave, Tustin, CA 92780
- Phone
- (714) 573-9500
- Enumerated
- Jun 17, 2005
- Record last updated
- Jan 17, 2022
- Medicaid ID
- 201528114 MO
- Medicare enrollment
- Enrolled (PECOS I20140204000441); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest radiation oncology physician records → All 735 in California → Look up another NPI →
Also registered at 14662 Newport Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Mohamed Al-Sadek, M.D.Internal Medicine Physician1154353829
- Gilbert AlmarazAnesthesiology Physician1114022704
- Sung-Woong Kim, M.D.Pediatric Anesthesiology Physician1992927909
- Megan Macneil, RNRegistered Nurse1427724574
- Fergus Ng, MDEmergency Medicine Physician1700806981
- Hien Nguyen, LCSWClinical Social Worker1588070767
Verify Tapan Roy in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license C51244Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
79% fewer Medicare Part D claims than the average radiation oncology physician in 2024
28 Medicare Part D claims, against an average of 134 among the 4,851 providers of this specialty who prescribed in Part D.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 87.1 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through 2 group practices
- Folsom DermatologyFolsom, CA
- Stephen William Doggett MD PATustin, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Tapan Roy among 735 radiation oncology physician records in California
Tapan Roy, M.D. is one of 735 radiation oncology physician records with a practice address in California. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 84% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 74% of these records are
- Graduated1974 · median 2005 among the 545 with a school on file
- Record last updated2022 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0001X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Radiation Oncology Physician providers in California
There are 735 radiation oncology physician records in California.
All 735 in California → Every provider in Tustin → Radiation Oncology Physician nationwide →
The 8 radiation oncology physician records with the nearest ZIP codes
- Paul Kim, M.D.Tustin, CA 927801629205190
- Vijaykumar Kini, MDTustin, CA 927801417940198
- Dechen Dolkar, MDFullerton, CA 928351861475683
- Leonard Farber, M.D.Fullerton, CA 928351639185838
- Young Lee, M.D.Fullerton, CA 928351710986260
- Tommy Sheu, MDFullerton, CA 928351568880060
- Regiane De Andrade, M.D.Fountain Valley, CA 927081922352467
- Asif Harsolia, M.D.Fountain Valley, CA 927081376565374
Common questions
What is Tapan Roy, M.D.'s NPI number?
Tapan Roy, M.D.'s National Provider Identifier (NPI) is 1205831922, issued on Jun 17, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Tapan Roy, M.D. located?
The NPPES record lists a practice address at 14662 Newport Ave, Tustin, CA, 92780. Phone: (714) 573-9500. Providers update this record themselves, so call before visiting.
How can I verify Tapan Roy, M.D.'s license?
NPPES lists California license number C51244, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Tapan Roy, M.D. prescribe under Medicare Part D?
In 2024, Tapan Roy, M.D. had 28 Medicare Part D claims; the average among radiation oncology physician prescribers was 134. Part D covers Medicare prescriptions only.
What is Tapan Roy, M.D.'s MIPS final score?
The 2023 MIPS final score is 87.1 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.