Geoffrey Joseph Sedor
Radiation Oncology Physician · Boston, MA
Geoffrey Joseph Sedor is a radiation oncology physician with a practice address in Boston, Massachusetts, and NPI 1770162042, issued on Apr 5, 2021. Check the license (Massachusetts 1028073, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Geoffrey Joseph Sedor
- Primary taxonomy
- Radiation Oncology Physician 2085R0001X
- License number
- 1028073 MA
Self-reported in NPPES; status is on the state search - Practice location
- 830 Harrison Ave, LL100, Boston, MA 02118
- Phone
- (617) 638-7070
- Enumerated
- Apr 5, 2021
- Record last updated
- Jul 17, 2026
- Fax
- (617) 638-7037
- Entity
- Type 1 · individual
8 nearest radiation oncology physician records → All 241 in Massachusetts → Look up another NPI →
Also registered at 830 Harrison Ave, LL100
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Theresa Buks, PA-CPhysician Assistant1275828915
- Caroline Cukier, PA-CPhysician Assistant1245000637
- Akash Parekh, MDRadiation Oncology Physician1073963732
- Sherry Yan, M.D.Radiation Oncology Physician1689035503
Verify Geoffrey Joseph Sedor in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 1028073Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
90% fewer Medicare Part D claims than the average radiation oncology physician in 2024
13 Medicare Part D claims, 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.
Geoffrey Joseph Sedor among 241 radiation oncology physician records in Massachusetts
Geoffrey Joseph Sedor 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 2021, is newer than 93% of them.
- NPI issued2021 · 93% of these records are older, 4% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileNo · 71% of these records are
- Record last updated2026 · 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 Boston → Radiation Oncology Physician nationwide →
The 8 radiation oncology physician records with the nearest ZIP codes
- Michael Dyer, M.D.Boston, MA 021181851659130
- Ariel Hirsch, MDBoston, MA 021181992783781
- Kimberley Mak, M.D., M.P.H.Boston, MA 021181891015350
- Akash Parekh, MDBoston, MA 021181073963732
- Minh Truong, MDBoston, MA 021181316937436
- Sherry Yan, M.D.Boston, MA 021181689035503
- Hannah Roberts, MDBoston, MA 021161437682986
- Jenna Adleman, MDBoston, MA 021151528613833
Common questions
What is Geoffrey Joseph Sedor's NPI number?
Geoffrey Joseph Sedor's National Provider Identifier (NPI) is 1770162042, issued on Apr 5, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Geoffrey Joseph Sedor located?
The NPPES record lists a practice address at 830 Harrison Ave, LL100, Boston, MA, 02118. Phone: (617) 638-7070. Providers update this record themselves, so call before visiting.
How can I verify Geoffrey Joseph Sedor's license?
NPPES lists Massachusetts license number 1028073, 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 Geoffrey Joseph Sedor prescribe under Medicare Part D?
In 2024, Geoffrey Joseph Sedor had 13 Medicare Part D claims; 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.