Donald B. Fuller, M.D.
Radiation Oncology Physician · San Diego, CA
Donald B. Fuller, M.D. is a radiation oncology physician with a practice address in San Diego, California, and NPI 1285632711, issued on Jul 8, 2005. Check the license (California G62532, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Donald B. Fuller
- Credential
- M.D.
- Primary taxonomy
- Radiation Oncology Physician 2085R0001X
- License number
- G62532 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3366 5TH Ave, San Diego, CA 92103
- Phone
- (619) 230-0400
- Enumerated
- Jul 8, 2005
- Record last updated
- Mar 7, 2023
- Fax
- (858) 429-7936
- Medicaid ID
- 00G625320 CA
- Medicare enrollment
- Enrolled (PECOS I20060830000460); accepts Medicare assignment
- Medical or professional school
- University Of Washington School Of Medicine, 1984
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest radiation oncology physician records → All 735 in California → Look up another NPI →
Also registered at 3366 5TH Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Tahir Ijaz, M.D.Radiation Oncology Physician1225036742
- Reza Shirazi, M.D.Radiation Oncology Physician1336175272
- Siavosh Vakilian, MDRadiation Oncology Physician1427456151
Verify Donald B. Fuller in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G62532Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.5 times the Medicare Part D claims of the average radiation oncology physician in 2024
336 Medicare Part D claims for 105 beneficiaries, against an average of 134 among the 4,851 providers of this specialty who prescribed in Part D.
Most prescribed
- Tamsulosin Hcl231 claims
- Methylprednisolone37 claims
- Ciprofloxacin Hcl28 claims
- Lorazepam11 claims
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): 84 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).
Industry payments in 2024: $353.27
14 payments; by number, the most common kind was food and beverage; the largest payer was Telix Pharmaceuticals. The 3,275 providers of this specialty with any payment received $1,897.85 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Genesis Healthcare Partners PCSan Diego, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Donald B. Fuller among 735 radiation oncology physician records in California
Donald B. Fuller, 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
- Graduated1984 · median 2005 among the 545 with a school on file
- Record last updated2023 · 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 San Diego → Radiation Oncology Physician nationwide →
The 8 radiation oncology physician records with the nearest ZIP codes
- Adam Horn, M.D.San Diego, CA 921031982979019
- Tahir Ijaz, M.D.San Diego, CA 921031225036742
- Anuradha Koka, M.D.San Diego, CA 921031538153549
- Jyoti Mayadev, M.DSan Diego, CA 921031902906902
- Arno Mundt, M.D.San Diego, CA 921031790708808
- Chika Nwachukwu, MDSan Diego, CA 921031194138263
- Parag Sanghvi, M.D., M..S.P.H.San Diego, CA 921031801005152
- Tyler Seibert, M.D., PH.D.San Diego, CA 921031679815963
Common questions
What is Donald B. Fuller, M.D.'s NPI number?
Donald B. Fuller, M.D.'s National Provider Identifier (NPI) is 1285632711, issued on Jul 8, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Donald B. Fuller, M.D. located?
The NPPES record lists a practice address at 3366 5TH Ave, San Diego, CA, 92103. Phone: (619) 230-0400. Providers update this record themselves, so call before visiting.
How can I verify Donald B. Fuller, M.D.'s license?
NPPES lists California license number G62532, 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 Donald B. Fuller, M.D. prescribe under Medicare Part D?
In 2024, Donald B. Fuller, M.D. had 336 Medicare Part D claims for 105 beneficiaries; the average among radiation oncology physician prescribers was 134. Part D covers Medicare prescriptions only.
What is Donald B. Fuller, M.D.'s MIPS final score?
The 2023 MIPS final score is 84 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.