Chu-Pei Feng, M.D.
Radiation Oncology Physician · Santa Ana, CA
Chu-Pei Feng, M.D. is a radiation oncology physician with a practice address in Santa Ana, California, and NPI 1922010073, issued on Aug 13, 2006. Check the license (California A66204, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Chu-Pei Feng
- Credential
- M.D.
- Primary taxonomy
- Radiation Oncology Physician 2085R0001X
- License number
- A66204 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1100-A N. Tustin Ave, Santa Ana, CA 92705
- Phone
- (714) 835-8520
- Enumerated
- Aug 13, 2006
- Record last updated
- Mar 7, 2023
- Fax
- (714) 835-3610
- Medicaid ID
- 00A662040 CA
- Medicare enrollment
- Enrolled (PECOS I20040630000295); may accept Medicare assignment
- Entity
- Type 1 · individual
8 nearest radiation oncology physician records → All 735 in California → Look up another NPI →
Also registered at 1100-A N. Tustin Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ernest Ngo, M.D.Radiation Oncology Physician1366454415
Verify Chu-Pei Feng in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A66204Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
61% fewer Medicare Part D claims than the average radiation oncology physician in 2024
52 Medicare Part D claims for 19 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: $123.86
1 payment: food and beverage; the largest payer was Phathom Pharmaceuticals, Inc. 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
- Orange County Radiation Oncology Medical GroupSanta Ana, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Chu-Pei Feng among 735 radiation oncology physician records in California
Chu-Pei Feng, 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 2006, is newer than 16% of them.
- NPI issued2006 · 16% of these records are older, 55% 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 Santa Ana → Radiation Oncology Physician nationwide →
The 8 radiation oncology physician records with the nearest ZIP codes
- Sharon Lee, M.D.Santa Ana, CA 927051215105432
- Ernest Ngo, M.D.Santa Ana, CA 927051366454415
- Regiane De Andrade, M.D.Fountain Valley, CA 927081922352467
- Asif Harsolia, M.D.Fountain Valley, CA 927081376565374
- Quoc-Anh Ho, MDFountain Valley, CA 927081063805836
- Peyman KabolizadehFountain Valley, CA 927081093941171
- Donald Karon, M.D.Fountain Valley, CA 927081982668216
- Usama Mahmood, MDFountain Valley, CA 927081386848844
Common questions
What is Chu-Pei Feng, M.D.'s NPI number?
Chu-Pei Feng, M.D.'s National Provider Identifier (NPI) is 1922010073, issued on Aug 13, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Chu-Pei Feng, M.D. located?
The NPPES record lists a practice address at 1100-A N. Tustin Ave, Santa Ana, CA, 92705. Phone: (714) 835-8520. Providers update this record themselves, so call before visiting.
How can I verify Chu-Pei Feng, M.D.'s license?
NPPES lists California license number A66204, 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 Chu-Pei Feng, M.D. prescribe under Medicare Part D?
In 2024, Chu-Pei Feng, M.D. had 52 Medicare Part D claims for 19 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.