Bret Adam Ancowitz, M.D.
Gastroenterology Physician · Braintree, MA
Bret Adam Ancowitz, M.D. is a gastroenterology physician with a practice address in Braintree, Massachusetts, and NPI 1962607051, issued on Jun 19, 2007. Check the license (Massachusetts 245820, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Bret Adam Ancowitz
- Credential
- M.D.
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- 245820 MA
Self-reported in NPPES; status is on the state search - Practice location
- 1681 Washington St, Braintree, MA 02184
- Phone
- (781) 848-6040
- Enumerated
- Jun 19, 2007
- Record last updated
- Sep 1, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (781) 843-1314
- Medicare enrollment
- Enrolled (PECOS I20101229000684); accepts Medicare assignment
- Medical or professional school
- Icahn School Of Medicine At Mount Sinai, 2000
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 686 in Massachusetts → Look up another NPI →
Also registered at 1681 Washington St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Bret Adam Ancowitz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 245820Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.5 times the Medicare Part D claims of the average gastroenterology physician in 2024
2,016 Medicare Part D claims for 446 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D.
Most prescribed
- Omeprazole655 claims
- Pantoprazole Sodium438 claims
- Sucralfate127 claims
- Dicyclomine Hcl97 claims
- Linzess55 claims
- Creon46 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.
Industry payments in 2024: $27.74
1 payment: food and beverage; the largest payer was Abbvie Inc. The 13,350 providers of this specialty with any payment received $5,015.95 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 4 group practices
- Cambridge Public Health CommissionCambridge, MA
- Harbor Medical Associates IncBraintree, MA
- Heywood Medical Group Inc.Gardner, MA
- Mass General Brigham Medical Group Suburban Massachusetts IncNewton, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Bret Adam Ancowitz among 686 gastroenterology physician records in Massachusetts
Bret Adam Ancowitz, M.D. is one of 686 gastroenterology physician records with a practice address in Massachusetts. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 51% of them.
- NPI issued2007 · 51% of these records are older, 40% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated2000 · median 2004 among the 491 with a school on file
- Record last updated2011 · 66% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in Massachusetts
There are 686 gastroenterology physician records in Massachusetts.
All 686 in Massachusetts → Every provider in Braintree → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Prakash Rau, MDBraintree, MA 021841447212238
- Sarathchandra Reddy, M.D.Braintree, MA 021841619956356
- George Barrett, MDMilton, MA 021861659549590
- Tahnee Sidhu, MDMilton, MA 021861114448149
- Robert Aaron, MDStoneham, MA 021801962694323
- Wanda Blanton, M.D.Stoneham, MA 021801417123431
- Brian Clark, M.D.Stoneham, MA 021801114193612
- David Fefferman, M.D.Stoneham, MA 021801720015928
Common questions
What is Bret Adam Ancowitz, M.D.'s NPI number?
Bret Adam Ancowitz, M.D.'s National Provider Identifier (NPI) is 1962607051, issued on Jun 19, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Bret Adam Ancowitz, M.D. located?
The NPPES record lists a practice address at 1681 Washington St, Braintree, MA, 02184. Phone: (781) 848-6040. Providers update this record themselves, so call before visiting.
How can I verify Bret Adam Ancowitz, M.D.'s license?
NPPES lists Massachusetts license number 245820, 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 Bret Adam Ancowitz, M.D. prescribe under Medicare Part D?
In 2024, Bret Adam Ancowitz, M.D. had 2,016 Medicare Part D claims for 446 beneficiaries; the average among gastroenterology physician prescribers was 811. 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.