Charles T. Buzanis, MD
Gastroenterology Physician · Boston, MA
Charles T. Buzanis, MD is a gastroenterology physician with a practice address in Boston, Massachusetts, and NPI 1487764965, issued on Aug 30, 2006. Check the license (Massachusetts 79160, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Charles T. Buzanis
- Credential
- MD
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- 79160 MA
Self-reported in NPPES; status is on the state search - Practice location
- 133 Brookline Ave FL 9, Boston, MA 02215
- Phone
- (617) 421-1091
- Enumerated
- Aug 30, 2006
- Record last updated
- Feb 2, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (617) 421-2555
- Medicaid ID
- 3192512 MA
- Medicare enrollment
- Enrolled (PECOS I20050707000766); accepts Medicare assignment
- Medical or professional school
- Un Of California, Irvine, College Of Medicine, 1988
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 686 in Massachusetts → Look up another NPI →
Also registered at 133 Brookline Ave FL 9
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Sanjay Shrivastava, MDCardiovascular Disease Physician1639187479
Verify Charles T. Buzanis in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 79160Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
19% fewer Medicare Part D claims than the average gastroenterology physician in 2024
656 Medicare Part D claims for 444 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims.
Most prescribed
- Gavilyte-C152 claims
- Peg3350-Sod Sul-Nacl-Kcl-Asb-C149 claims
- Sod Sulf-Potass Sulf-Mag Sulf84 claims
- Mesalamine36 claims
- Omeprazole29 claims
- Pantoprazole Sodium26 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
- Atrius Health IncNeedham, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Charles T. Buzanis among 686 gastroenterology physician records in Massachusetts
Charles T. Buzanis, MD 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 2006, is newer than 14% of them.
- NPI issued2006 · 14% of these records are older, 49% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated1988 · 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
- Michael Apstein, MDBoston, MA 022151609854603
- Alphonso Brown, MDBoston, MA 022151871579987
- Valerie Byrnes, M.D.Boston, MA 022151467410332
- Catherine Cheney, M.D.Boston, MA 022151710962030
- Zalman Falchuk, MDBoston, MA 022151912996000
- Kenneth Falchuk, M.D.Boston, MA 022151639154305
- Douglas Horst, MDBoston, MA 022151518957224
- John Lamont, MDBoston, MA 022151316903735
Common questions
What is Charles T. Buzanis, MD's NPI number?
Charles T. Buzanis, MD's National Provider Identifier (NPI) is 1487764965, issued on Aug 30, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Charles T. Buzanis, MD located?
The NPPES record lists a practice address at 133 Brookline Ave FL 9, Boston, MA, 02215. Phone: (617) 421-1091. Providers update this record themselves, so call before visiting.
How can I verify Charles T. Buzanis, MD's license?
NPPES lists Massachusetts license number 79160, 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 Charles T. Buzanis, MD prescribe under Medicare Part D?
In 2024, Charles T. Buzanis, MD had 656 Medicare Part D claims for 444 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.