Eric Chi-Ching Ko, M.D., PH.D.
Radiation Oncology Physician · Worcester, MA
Eric Chi-Ching Ko, M.D., PH.D. is a radiation oncology physician with a practice address in Worcester, Massachusetts, and NPI 1639345929, issued on May 6, 2008. Check the license (Massachusetts 281642, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Eric Chi-Ching Ko
- Credential
- M.D., PH.D.
- Primary taxonomy
- Radiation Oncology Physician 2085R0001X
- License number
- 281642 MA
Self-reported in NPPES; status is on the state search - Practice location
- 55 Lake Ave N, Worcester, MA 01655
- Phone
- (774) 442-5551
- Enumerated
- May 6, 2008
- Record last updated
- Nov 13, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (774) 442-5006
- Medicaid ID
- 110159062A MA
- Medicare enrollment
- Enrolled (PECOS I20200123002193); accepts Medicare assignment
- Medical or professional school
- State University Of New York At Buffalo School Of Medicine, 2008
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest radiation oncology physician records → All 241 in Massachusetts → Look up another NPI →
Also registered at 55 Lake Ave N
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Nawal Aamir, MDInternal Medicine Physician1588248926
- Amarys Abadie, CRNACertified Registered Nurse Anesthetist1992936843
- Paula Abate, NPNurse Practitioner1336265909
- Aly AbayazeedDiagnostic Radiology Physician1821221946
- Zainab AbbasDermatology Physician1609028000
- Mary-Alice Abbott, MDClinical Genetics (M.D.) Physician1982799417
Verify Eric Chi-Ching Ko in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 281642Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
72% fewer Medicare Part D claims than the average radiation oncology physician in 2024
38 Medicare Part D claims for 30 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.
The MIPS final score for 2023 (Medicare payment program): 97 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Bills Medicare through 2 group practices
- Harvard Medical Faculty Phys AT Beth Israel Deaconess Med Ctr IncNeedham, MA
- Umass Memorial Medical Group IncWorcester, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Eric Chi-Ching Ko among 241 radiation oncology physician records in Massachusetts
Eric Chi-Ching Ko, M.D., PH.D. is one of 241 radiation oncology physician records with a practice address in Massachusetts. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 51% of them.
- NPI issued2008 · 51% of these records are older, 44% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 71% of these records are
- Graduated2008 · median 2006 among the 172 with a school on file
- Record last updated2020 · 54% 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 Massachusetts 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 Massachusetts
There are 241 radiation oncology physician records in Massachusetts.
All 241 in Massachusetts → Every provider in Worcester → Radiation Oncology Physician nationwide →
The 8 radiation oncology physician records with the nearest ZIP codes
- Maria Cicchetti, M.D.Worcester, MA 016551174506752
- Thomas Fitzgerald, M.D.Worcester, MA 016551982688214
- Daniel Han, MDWorcester, MA 016551831192301
- Sidney Kadish, M.D.Worcester, MA 016551659355915
- Lily Lawn-Tsao, M.D.Worcester, MA 016551083609911
- Richard Pieters, M.D.Worcester, MA 016551902888324
- Mark Smyczynski, M.D.Worcester, MA 016551871661603
- Robert Stein, MDWorcester, MA 016551720063076
Common questions
What is Eric Chi-Ching Ko, M.D., PH.D.'s NPI number?
Eric Chi-Ching Ko, M.D., PH.D.'s National Provider Identifier (NPI) is 1639345929, issued on May 6, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Eric Chi-Ching Ko, M.D., PH.D. located?
The NPPES record lists a practice address at 55 Lake Ave N, Worcester, MA, 01655. Phone: (774) 442-5551. Providers update this record themselves, so call before visiting.
How can I verify Eric Chi-Ching Ko, M.D., PH.D.'s license?
NPPES lists Massachusetts license number 281642, as entered by the provider. Search the Massachusetts Board of Registration in Medicine at https://findmydoctor.mass.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Eric Chi-Ching Ko, M.D., PH.D. prescribe under Medicare Part D?
In 2024, Eric Chi-Ching Ko, M.D., PH.D. had 38 Medicare Part D claims for 30 beneficiaries; the average among radiation oncology physician prescribers was 134. Part D covers Medicare prescriptions only.
What is Eric Chi-Ching Ko, M.D., PH.D.'s MIPS final score?
The 2023 MIPS final score is 97 of 100. 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.