Ashok K. Roy, M.D.
Internal Medicine Physician · Cambridge, MA
Ashok K. Roy, M.D. is an internal medicine physician with a practice address in Cambridge, Massachusetts, and NPI 1245298637, issued on May 3, 2006. Check the license (Massachusetts 224638, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Ashok K. Roy
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 224638 MA
Self-reported in NPPES; status is on the state search - Practice location
- 77 Mass Ave Bldg E23, Cambridge, MA 02139
- Phone
- (617) 253-4481
- Enumerated
- May 3, 2006
- Record last updated
- Sep 19, 2014 (not updated in 12 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 6,825 in Massachusetts → Look up another NPI →
Verify Ashok K. Roy in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 224638Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% fewer Medicare Part D claims than the average internal medicine physician in 2024
104 Medicare Part D claims for 80 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Most prescribed
- Amoxicillin-Clavulanate Potass14 claims
- Azithromycin13 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.
Ashok K. Roy among 6,825 internal medicine physician records in Massachusetts
Ashok K. Roy, M.D. is one of 6,825 internal medicine physician records with a practice address in Massachusetts. 75% 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 12% of them.
- NPI issued2006 · 12% of these records are older, 54% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileNo · 60% of these records are
- Record last updated2014 · 64% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
300 internal medicine physician records list a practice address in Cambridge
They are 300 of the 5,145 NPPES records with a practice address in Cambridge, and 6,825 internal medicine physician records in Massachusetts.
All 6,825 in Massachusetts → Every provider in Cambridge → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- David Baron, MDCambridge, MA 021391376503318
- John Brusch, MDCambridge, MA 021391639138449
- David Diamond, MDCambridge, MA 021391265411664
- Leigh Firn, MDCambridge, MA 021391194706507
- Agnes Graves, M.D.Cambridge, MA 021391932160934
- Howard Heller, MDCambridge, MA 021391508856287
- Michael Kane, MDCambridge, MA 021391376524769
- William Kettyle, MDCambridge, MA 021391306823414
Common questions
What is Ashok K. Roy, M.D.'s NPI number?
Ashok K. Roy, M.D.'s National Provider Identifier (NPI) is 1245298637, issued on May 3, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Ashok K. Roy, M.D. located?
The NPPES record lists a practice address at 77 Mass Ave Bldg E23, Cambridge, MA, 02139. Phone: (617) 253-4481. Providers update this record themselves, so call before visiting.
How can I verify Ashok K. Roy, M.D.'s license?
NPPES lists Massachusetts license number 224638, 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 Ashok K. Roy, M.D. prescribe under Medicare Part D?
In 2024, Ashok K. Roy, M.D. had 104 Medicare Part D claims for 80 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.