Kathleen Viveiros, M.D.
Gastroenterology Physician · Boston, MA
Kathleen Viveiros, M.D. is a gastroenterology physician with a practice address in Boston, Massachusetts, and NPI 1376664938, issued on Apr 2, 2007. Check the license (Massachusetts 233922, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Kathleen Viveiros
- Credential
- M.D.
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- 233922 MA
Self-reported in NPPES; status is on the state search - Practice location
- 800 Washington St, Boston, MA 02111
- Phone
- (617) 636-0660
- Enumerated
- Apr 2, 2007
- Record last updated
- Apr 23, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (617) 636-4207
- Medicare enrollment
- Enrolled (PECOS I20071001000208); accepts Medicare assignment
- Medical or professional school
- Warren Alpert Medical School Of Brown University, 2001
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 686 in Massachusetts → Look up another NPI →
Also registered at 800 Washington St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Omer Abbak, PHARMDPharmacist1114500337
- Aya Abdelnaser, MDStudent in an Organized Health Care Education/Training Program1770425373
- Marie Elise Abi Antoun, MDObstetrics & Gynecology Physician1356042626
- Ahmad AboalfarajSurgery Physician1538517651
- Tala Abu Samaan, MDStudent in an Organized Health Care Education/Training Program1376386250
Verify Kathleen Viveiros in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 233922Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
74% fewer Medicare Part D claims than the average gastroenterology physician in 2024
211 Medicare Part D claims for 100 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 6% of claims.
Most prescribed
- Ursodiol50 claims
- Gavilyte-G31 claims
- Omeprazole26 claims
- Carvedilol17 claims
- Furosemide14 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
- Brigham And Womens Physicians Organization IncBoston, MA
- Massachusetts General Physicians Organization IncBoston, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Kathleen Viveiros among 686 gastroenterology physician records in Massachusetts
Kathleen Viveiros, 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
- Graduated2001 · median 2004 among the 491 with a school on file
- Record last updated2021 · 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 Boston → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Harmony Allison, MDBoston, MA 021111245240704
- Peter Bonis, M.D.Boston, MA 021111548462807
- Aaron Dickstein, M.D.Boston, MA 021111003059239
- Daria Homenko, M.D.Boston, MA 021111891958385
- Allen Hwang, M.D., M.S.C.E.Boston, MA 021111558532689
- Sushrut Jangi, MDBoston, MA 021111376770115
- Douglas Janowski, M.D.Boston, MA 021111700803855
- Raffi Karagozian, MDBoston, MA 021111356394233
Common questions
What is Kathleen Viveiros, M.D.'s NPI number?
Kathleen Viveiros, M.D.'s National Provider Identifier (NPI) is 1376664938, issued on Apr 2, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Kathleen Viveiros, M.D. located?
The NPPES record lists a practice address at 800 Washington St, Boston, MA, 02111. Phone: (617) 636-0660. Providers update this record themselves, so call before visiting.
How can I verify Kathleen Viveiros, M.D.'s license?
NPPES lists Massachusetts license number 233922, 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 Kathleen Viveiros, M.D. prescribe under Medicare Part D?
In 2024, Kathleen Viveiros, M.D. had 211 Medicare Part D claims for 100 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.