Cecil Mayra Benitez, M.D., PH.D.
Radiation Oncology Physician · Upland, CA
Cecil Mayra Benitez, M.D., PH.D. is a radiation oncology physician with a practice address in Upland, California, and NPI 1578182739, issued on Apr 8, 2020. Check the license (California A188987, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Cecil Mayra Benitez
- Credential
- M.D., PH.D.
- Primary taxonomy
- Radiation Oncology Physician 2085R0001X
- License number
- A188987 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1100 San Bernardino RD Ste 1100, Upland, CA 91786
- Phone
- (909) 949-2242
- Enumerated
- Apr 8, 2020
- Record last updated
- Jun 4, 2025
- Fax
- (909) 981-5783
- Medicare enrollment
- Enrolled (PECOS I20250613003270); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest radiation oncology physician records → All 735 in California → Look up another NPI →
Also registered at 1100 San Bernardino RD Ste 1100
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Mark Chang, DOHematology & Oncology Physician1861954182
- Genesis Ibarra, LCSWClinical Social Worker1043767353
- Diba Izadyar, PA-CPhysician Assistant1710520671
- Bradford Kim, M.D.Surgical Oncology Physician1215297080
- Seija Maniskas, MD, MSColon & Rectal Surgery Physician1861015729
- Melissa O'Banion, PA-CPhysician Assistant1235785528
Verify Cecil Mayra Benitez in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A188987Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
83% fewer Medicare Part D claims than the average radiation oncology physician in 2024
23 Medicare Part D claims for 13 beneficiaries, 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.
Industry payments in 2024: $122.21
4 payments; by number, the most common kind was food and beverage; the largest payer was Boston Scientific Corporation. 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
- City OF Hope Medical FoundationUpland, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Cecil Mayra Benitez among 735 radiation oncology physician records in California
Cecil Mayra Benitez, M.D., PH.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 2020, is newer than 95% of them.
- NPI issued2020 · 95% of these records are older, 2% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 74% of these records are
- Graduated2020 · median 2005 among the 545 with a school on file
- Record last updated2025 · 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 Upland → Radiation Oncology Physician nationwide →
The 8 radiation oncology physician records with the nearest ZIP codes
- Sean Szeja, M.D.Upland, CA 917861023351822
- Edward Jung, MDWest Covina, CA 917901003011941
- Arthur Chung, MDWest Covina, CA 917921295026102
- Sri Gorty, M.D.Pomona, CA 917671952310054
- Yallapragada Rao, M.D.Pomona, CA 917671871503490
- Peter Austin, M.D.Diamond Bar, CA 917651487085221
- Dong Kim, M.D., PH.D.Ontario, CA 917611386816262
- David Hsu, MDMonterey Park, CA 917541619983343
Common questions
What is Cecil Mayra Benitez, M.D., PH.D.'s NPI number?
Cecil Mayra Benitez, M.D., PH.D.'s National Provider Identifier (NPI) is 1578182739, issued on Apr 8, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Cecil Mayra Benitez, M.D., PH.D. located?
The NPPES record lists a practice address at 1100 San Bernardino RD Ste 1100, Upland, CA, 91786. Phone: (909) 949-2242. Providers update this record themselves, so call before visiting.
How can I verify Cecil Mayra Benitez, M.D., PH.D.'s license?
NPPES lists California license number A188987, 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 Cecil Mayra Benitez, M.D., PH.D. prescribe under Medicare Part D?
In 2024, Cecil Mayra Benitez, M.D., PH.D. had 23 Medicare Part D claims for 13 beneficiaries; the average among radiation oncology physician prescribers was 134. Part D covers Medicare prescriptions only.
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.