Loren Galler Rabinowitz, M.D.
Gastroenterology Physician · Boston, MA
Loren Galler Rabinowitz, M.D. is a gastroenterology physician with a practice address in Boston, Massachusetts, and NPI 1659766152, issued on Apr 1, 2015. Check the license (Massachusetts 289961, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Loren Galler Rabinowitz
- Credential
- M.D.
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- 289961 MA
Self-reported in NPPES; status is on the state search - Practice location
- 330 Brookline Ave, Boston, MA 02215
- Phone
- (617) 667-2802
- Enumerated
- Apr 1, 2015
- Record last updated
- Oct 28, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20210927002907); accepts Medicare assignment
- Medical or professional school
- Columbia University College Of Physicians And Surgeons, 2015
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Also registered at 330 Brookline Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Najma Abdullahi, MD, MPHStudent in an Organized Health Care Education/Training Program1669213054
- Elisabeth AbelesStudent in an Organized Health Care Education/Training Program1528659760
Verify Loren Galler Rabinowitz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 289961Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
65% fewer Medicare Part D claims than the average gastroenterology physician in 2024
283 Medicare Part D claims for 82 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 49% of claims.
Most prescribed
- Skyrizi On-Body40 claims
- Sod Sulf-Potass Sulf-Mag Sulf40 claims
- Stelara38 claims
- Budesonide Ec16 claims
- Mesalamine16 claims
- Omeprazole13 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
- Harvard Medical Faculty Phys AT Beth Israel Deaconess Med Ctr IncBoston, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gastroenterology Physician providers in Massachusetts
There are 686 gastroenterology physician records in Massachusetts.
Other gastroenterology physician records in Massachusetts
- Robert Aaron, MDStoneham, MA1962694323
- Michael Aaronson, MDBeverly, MA1366547739
- Diane Abraczinskas, MDBoston, MA1811988488
- Nitin Aggarwal, M.D.North Chelmsford, MA1407145402
- Jaya Agrawal, M.D.Florence, MA1316979842
- Heidi Ahmed, M.D.North Chelmsford, MA1801276472
- Lynne Ahn, MDFramingham, MA1144269143
- Hiroyuki Aihara, M.D.Boston, MA1619395795
- Mona AkbariSouth Weymouth, MA1871720037
- Geetanjali Akerkar, M.D.Chelmsford, MA1144289166
Common questions
What is Loren Galler Rabinowitz, M.D.'s NPI number?
Loren Galler Rabinowitz, M.D.'s National Provider Identifier (NPI) is 1659766152, issued on Apr 1, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Loren Galler Rabinowitz, M.D. located?
The NPPES record lists a practice address at 330 Brookline Ave, Boston, MA, 02215. Phone: (617) 667-2802. Providers update this record themselves, so call before visiting.
How can I verify Loren Galler Rabinowitz, M.D.'s license?
NPPES lists Massachusetts license number 289961, 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 Loren Galler Rabinowitz, M.D. prescribe under Medicare Part D?
In 2024, Loren Galler Rabinowitz, M.D. had 283 Medicare Part D claims for 82 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.