David I-Feng Hsu, MD
Radiation Oncology Physician · Monterey Park, CA
David I-Feng Hsu, MD is a radiation oncology physician with a practice address in Monterey Park, California, and NPI 1619983343, issued on Aug 1, 2006. Check the license (California A83121, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- David I-Feng Hsu
- Credential
- MD
- Primary taxonomy
- Radiation Oncology Physician 2085R0001X
- License number
- A83121 CA
Self-reported in NPPES; status is on the state search - Practice location
- 605 N Garfield Ave, Monterey Park, CA 91754
- Phone
- (626) 571-6100
- Enumerated
- Aug 1, 2006
- Record last updated
- Mar 6, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (626) 571-6101
- Medicare enrollment
- Enrolled (PECOS I20041001000990); may accept Medicare assignment
- Medical or professional school
- Creighton University School Of Medicine, 1998
- Entity
- Type 1 · individual
8 nearest radiation oncology physician records → All 735 in California → Look up another NPI →
Verify David I-Feng Hsu in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A83121Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
67% fewer Medicare Part D claims than the average radiation oncology physician in 2024
44 Medicare Part D claims for 18 beneficiaries, against an average of 134 among the 4,851 providers of this specialty who prescribed in Part D.
Most prescribed
- Lidocaine Hcl Viscous15 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): 92.3 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: $33.13
1 payment: food and beverage; the largest payer was Lilly USA, LLC. 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 3 group practices
- Ahmc International Cancer Center A Medical CorporationMonterey Park, CA
- Parham Tabibian MD IncLos Alamitos, CA
- Tony N Nakhla DO IncSanta Ana, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
David I-Feng Hsu among 735 radiation oncology physician records in California
David I-Feng Hsu, MD 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
- Graduated1998 · median 2005 among the 545 with a school on file
- Record last updated2012 · 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 Monterey Park → Radiation Oncology Physician nationwide →
The 8 radiation oncology physician records with the nearest ZIP codes
- Dong Kim, M.D., PH.D.Ontario, CA 917611386816262
- Peter Austin, M.D.Diamond Bar, CA 917651487085221
- Sri Gorty, M.D.Pomona, CA 917671952310054
- Yallapragada Rao, M.D.Pomona, CA 917671871503490
- Geoffrey Geiger, MDCovina, CA 917231285836619
- Uri Zisblatt, M.D.Covina, CA 917231114921616
- Cecil Benitez, M.D., PH.D.Upland, CA 917861578182739
- Sean Szeja, M.D.Upland, CA 917861023351822
Common questions
What is David I-Feng Hsu, MD's NPI number?
David I-Feng Hsu, MD's National Provider Identifier (NPI) is 1619983343, issued on Aug 1, 2006. An NPI identifies a provider in billing; it is not a license.
Where is David I-Feng Hsu, MD located?
The NPPES record lists a practice address at 605 N Garfield Ave, Monterey Park, CA, 91754. Phone: (626) 571-6100. Providers update this record themselves, so call before visiting.
How can I verify David I-Feng Hsu, MD's license?
NPPES lists California license number A83121, 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 David I-Feng Hsu, MD prescribe under Medicare Part D?
In 2024, David I-Feng Hsu, MD had 44 Medicare Part D claims for 18 beneficiaries; the average among radiation oncology physician prescribers was 134. Part D covers Medicare prescriptions only.
What is David I-Feng Hsu, MD's MIPS final score?
The 2023 MIPS final score is 92.3 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.