Eric Chau-Yong Ku, MD
Radiation Oncology Physician · Modesto, CA
Eric Chau-Yong Ku, MD is a radiation oncology physician with a practice address in Modesto, California, and NPI 1013478999, issued on Mar 25, 2019. Check the license (California A182542, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Eric Chau-Yong Ku
- Credential
- MD
- Primary taxonomy
- Radiation Oncology Physician 2085R0001X
- License number
- A182542 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1700 Coffee RD, Modesto, CA 95355
- Phone
- (209) 572-7237
- Enumerated
- Mar 25, 2019
- Record last updated
- Feb 12, 2025
- Medicare enrollment
- Enrolled (PECOS I20240919004237); accepts Medicare assignment
- Medical or professional school
- F H Netter, M.D. School Of Med At Quinnipiac Univ, 2019
- 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 1700 Coffee RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Zainab Abbasi, MBBSStudent in an Organized Health Care Education/Training Program1972442903
- Rahimot AkindeleStudent in an Organized Health Care Education/Training Program1790570422
- Sultana Akter, MDStudent in an Organized Health Care Education/Training Program1881534717
- Khalid Al Zubaidi, MDStudent in an Organized Health Care Education/Training Program1023957032
- Zahraa Ali AkbarStudent in an Organized Health Care Education/Training Program1124967815
- Rachel Ann Alikes, RNRegistered Nurse First Assistant1073441374
Verify Eric Chau-Yong Ku in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A182542Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
51% fewer Medicare Part D claims than the average radiation oncology physician in 2024
65 Medicare Part D claims for 31 beneficiaries, against an average of 134 among the 4,851 providers of this specialty who prescribed in Part D. 12 claims were for opioids.
Most prescribed
- Lidocaine Hcl Viscous14 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.
Industry payments in 2024: $1,026.98
5 payments; by number, the most common kind was food and beverage; the largest payer was Bioprotect Medical, 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
- Sutter Valley Medical FoundationRoseville, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Eric Chau-Yong Ku among 735 radiation oncology physician records in California
Eric Chau-Yong Ku, 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 2019, is newer than 92% of them.
- NPI issued2019 · 92% of these records are older, 5% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 74% of these records are
- Graduated2019 · 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 Modesto → Radiation Oncology Physician nationwide →
The 8 radiation oncology physician records with the nearest ZIP codes
- Jorge Garcia-Young, M.D.Modesto, CA 953551902860802
- Quoc Luu, M.D.Modesto, CA 953551689692808
- Christopher Neville, M.D.Modesto, CA 953551790743136
- David Lowther, MDModesto, CA 953501902880818
- Alireza Mahmoudieh, MDMerced, CA 953481720166309
- Pericles Ioannides, M.D.Sonora, CA 953701386007367
- Haocheng Cai, DO, PHDTurlock, CA 953821548882632
- Frederick David, M.D.Santa Rosa, CA 954031982793808
Common questions
What is Eric Chau-Yong Ku, MD's NPI number?
Eric Chau-Yong Ku, MD's National Provider Identifier (NPI) is 1013478999, issued on Mar 25, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Eric Chau-Yong Ku, MD located?
The NPPES record lists a practice address at 1700 Coffee RD, Modesto, CA, 95355. Phone: (209) 572-7237. Providers update this record themselves, so call before visiting.
How can I verify Eric Chau-Yong Ku, MD's license?
NPPES lists California license number A182542, 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 Eric Chau-Yong Ku, MD prescribe under Medicare Part D?
In 2024, Eric Chau-Yong Ku, MD had 65 Medicare Part D claims for 31 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.