Brian Ash, M.D.
Internal Medicine Physician · Brighton, MA
Brian Ash, M.D. is an internal medicine physician with a practice address in Brighton, Massachusetts, and NPI 1033180385, issued on Jan 26, 2006. Check the license (Massachusetts 221467, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Brian Ash
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 221467 MA
Self-reported in NPPES; status is on the state search - Practice location
- 736 Cambridge St, Brighton, MA 02135
- Phone
- (617) 782-5316
- Enumerated
- Jan 26, 2006
- Record last updated
- Feb 3, 2016 (not updated in 10 years: call before relying on the address or phone)
- Medicaid ID
- 2075130 MA
- Medicare enrollment
- Enrolled (PECOS I20040903000781); accepts Medicare assignment
- Medical or professional school
- University Of Massachusetts Medical School, 2001
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 6,825 in Massachusetts → Look up another NPI →
Also registered at 736 Cambridge St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Brian Ash in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 221467Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
83% fewer Medicare Part D claims than the average internal medicine physician in 2024
554 Medicare Part D claims for 146 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 14 claims were for opioids.
Most prescribed
- Atorvastatin Calcium53 claims
- Lisinopril41 claims
- Rosuvastatin Calcium31 claims
- Lorazepam19 claims
- Omeprazole19 claims
- Amlodipine Besylate18 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 one group practice
- Brigham And Womens Physicians Organization IncBoston, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Brian Ash among 6,825 internal medicine physician records in Massachusetts
Brian Ash, 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 fileYes · 60% of these records are
- Graduated2001 · median 2004 among the 4,103 with a school on file
- Record last updated2016 · 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).
72 internal medicine physician records list a practice address in Brighton
They are 72 of the 1,638 NPPES records with a practice address in Brighton, and 6,825 internal medicine physician records in Massachusetts.
All 6,825 in Massachusetts → Every provider in Brighton → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Larry Chin, MDBrighton, MA 021351760476832
- Ivana Jarolimova, MDBrighton, MA 021351306833942
- Hessa Kadet, M.D.Brighton, MA 021351376580480
- Lubov Kaplun, M.D.Brighton, MA 021351841247590
- Bilal Kaskar, MDBrighton, MA 021351265478440
- Sheila Macdonnell, M.D.Brighton, MA 021351245227958
- Ida Minevich, MDBrighton, MA 021351891780367
- Ali Seddighzadeh, M.D.Brighton, MA 021351780632927
Common questions
What is Brian Ash, M.D.'s NPI number?
Brian Ash, M.D.'s National Provider Identifier (NPI) is 1033180385, issued on Jan 26, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Brian Ash, M.D. located?
The NPPES record lists a practice address at 736 Cambridge St, Brighton, MA, 02135. Phone: (617) 782-5316. Providers update this record themselves, so call before visiting.
How can I verify Brian Ash, M.D.'s license?
NPPES lists Massachusetts license number 221467, 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 Brian Ash, M.D. prescribe under Medicare Part D?
In 2024, Brian Ash, M.D. had 554 Medicare Part D claims for 146 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.