Jason Grunes, M.D.
Internal Medicine Physician · Braintree, MA
Jason Grunes, M.D. is an internal medicine physician with a practice address in Braintree, Massachusetts, and NPI 1619131539, issued on Jul 10, 2008. Check the license (Massachusetts 248248, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Jason Grunes
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 248248 MA
Self-reported in NPPES; status is on the state search - Practice location
- 250 Pond St, Braintree, MA 02184
- Phone
- (774) 270-1618
- Enumerated
- Jul 10, 2008
- Record last updated
- Apr 24, 2012 (not updated in 14 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20110921000051); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 6,825 in Massachusetts → Look up another NPI →
Also registered at 250 Pond St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Susan Armenia, LICSWSocial Worker1437631033
- Arlene Bello, OTROccupational Therapist1083831390
- Sophie Billings, OTR/LOccupational Therapist1417377268
- Alexander Burnham, MS, CCC-SLPSpeech-Language Pathologist1134247851
- Julia Carciero, LICSWClinical Social Worker1184105199
- Sara Cohen, MDPhysical Medicine & Rehabilitation Physician1366611188
Verify Jason Grunes in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 248248Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
34% fewer Medicare Part D claims than the average internal medicine physician in 2024
2,102 Medicare Part D claims for 546 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 143 claims were for opioids.
Most prescribed
- Metoprolol Succinate107 claims
- Gabapentin89 claims
- Atorvastatin Calcium85 claims
- Methocarbamol82 claims
- Oxycodone Hcl81 claims
- Amlodipine Besylate75 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.
No measured MIPS final score for 2023
CMS assigned the neutral MIPS final score of 75 without scoring Quality, Cost, Promoting Interoperability or Improvement Activities. It is an administrative threshold, so PlainDoctor does not compare it with measured clinicians.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Jason Grunes PLLCWoburn, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Jason Grunes among 6,825 internal medicine physician records in Massachusetts
Jason Grunes, 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 2008, is newer than 55% of them.
- NPI issued2008 · 55% of these records are older, 40% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated2008 · median 2004 among the 4,103 with a school on file
- Record last updated2012 · 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).
32 internal medicine physician records list a practice address in Braintree
They are 32 of the 991 NPPES records with a practice address in Braintree, and 6,825 internal medicine physician records in Massachusetts.
All 6,825 in Massachusetts → Every provider in Braintree → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Renee Aversano, MDBraintree, MA 021841962402255
- Richard Black, MDBraintree, MA 021841669473955
- Arthur Bregoli, M.D.Braintree, MA 021841801863196
- Mohamed Elgeziry, MDBraintree, MA 021841477512929
- George Holmes, M.D.Braintree, MA 021841518935642
- Hikaru Isihara, M.D., PH.D.Braintree, MA 021841598750598
- Sara Kelly, M.D.Braintree, MA 021841164491957
- Louis Maggio, M.DBraintree, MA 021841518929637
Common questions
What is Jason Grunes, M.D.'s NPI number?
Jason Grunes, M.D.'s National Provider Identifier (NPI) is 1619131539, issued on Jul 10, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Jason Grunes, M.D. located?
The NPPES record lists a practice address at 250 Pond St, Braintree, MA, 02184. Phone: (774) 270-1618. Providers update this record themselves, so call before visiting.
How can I verify Jason Grunes, M.D.'s license?
NPPES lists Massachusetts license number 248248, 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 Jason Grunes, M.D. prescribe under Medicare Part D?
In 2024, Jason Grunes, M.D. had 2,102 Medicare Part D claims for 546 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Jason Grunes, M.D.'s MIPS final score?
CMS assigned the neutral MIPS final score of 75 for 2023 without scoring any category, so it is not a measured result.
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.