Mark P. Dematteo, MD
Emergency Medicine Physician · Braintree, MA
Mark P. Dematteo, MD is an emergency medicine physician with a practice address in Braintree, Massachusetts, and NPI 1922044015, issued on Jun 20, 2006. Check the license (Massachusetts 150129, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Mark P. Dematteo
- Credential
- MD
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- 150129 MA
Self-reported in NPPES; status is on the state search - Practice location
- 111 Grossman Dr, Braintree, MA 02184
- Phone
- (781) 849-1000
- Enumerated
- Jun 20, 2006
- Record last updated
- Jan 7, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicaid ID
- 3158250 MA
- Medicare enrollment
- Enrolled (PECOS I20110301000014); accepts Medicare assignment
- Medical or professional school
- University Of Vermont College Of Medicine, 1993
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 1,829 in Massachusetts → Look up another NPI →
Also registered at 111 Grossman Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Deborah Antos, PAMedical Physician Assistant1295798437
- Peter Barrant, M.D.Pediatrics Physician1215913835
- Caitlin Bast, DNPAdult Health Nurse Practitioner1558945071
- Gail Bean, NPNurse Practitioner1992774137
- Vicki Beggs, PHDPsychologist1104877539
- Elvira Belenky, PAMedical Physician Assistant1316901507
Verify Mark P. Dematteo in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 150129Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
89% more Medicare Part D claims than the average emergency medicine physician in 2024
428 Medicare Part D claims for 348 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. 19 claims were for opioids.
Most prescribed
- Prednisone63 claims
- Cefdinir49 claims
- Doxycycline Monohydrate38 claims
- Amoxicillin-Clavulanate Potass26 claims
- Cephalexin20 claims
- Oxycodone Hcl19 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.
Bills Medicare through 2 group practices
- Associated Physicians OF Harvard Medical Faculty Physicians AT Beth ISNew Bedford, MA
- Atrius Health IncBraintree, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark P. Dematteo among 1,829 emergency medicine physician records in Massachusetts
Mark P. Dematteo, MD is one of 1,829 emergency medicine physician records with a practice address in Massachusetts. 82% 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 9% of them.
- NPI issued2006 · 9% of these records are older, 59% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated1993 · median 2011 among the 1,200 with a school on file
- Record last updated2021 · 57% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Emergency Medicine Physician providers in Massachusetts
There are 1,829 emergency medicine physician records in Massachusetts.
All 1,829 in Massachusetts → Every provider in Braintree → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Joy Valentine Bitner, MDMilton, MA 021861710007646
- Joshua Brody, M.D.Milton, MA 021861932429016
- Peter Cellucci, M.D.Milton, MA 021861992887913
- Philip Lam, MDMilton, MA 021861245360817
- Rebecca Levine, MDMilton, MA 021861871153445
- Paul Paganelli, M.D.Milton, MA 021861194822700
- David Purcell, MDMilton, MA 021861730216151
- Andrew Rinne, M.D.Milton, MA 021861225324718
Common questions
What is Mark P. Dematteo, MD's NPI number?
Mark P. Dematteo, MD's National Provider Identifier (NPI) is 1922044015, issued on Jun 20, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark P. Dematteo, MD located?
The NPPES record lists a practice address at 111 Grossman Dr, Braintree, MA, 02184. Phone: (781) 849-1000. Providers update this record themselves, so call before visiting.
How can I verify Mark P. Dematteo, MD's license?
NPPES lists Massachusetts license number 150129, 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 Mark P. Dematteo, MD prescribe under Medicare Part D?
In 2024, Mark P. Dematteo, MD had 428 Medicare Part D claims for 348 beneficiaries; the average among emergency medicine physician prescribers was 226. 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.