Alireza Toossi, MD
Internal Medicine Physician · Boston, MA
Alireza Toossi, MD is an internal medicine physician with a practice address in Boston, Massachusetts, and NPI 1780871970, issued on Oct 1, 2007. Check the license (Massachusetts 234084, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Alireza Toossi
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- 234084 MA
37478 AZ
Self-reported in NPPES; status is on the state search - Practice location
- 22 Liberty Dr, Boston, MA 02210
- Phone
- (617) 244-1669
- Enumerated
- Oct 1, 2007
- Record last updated
- Aug 12, 2025
- Fax
- (617) 244-6769
- Medicaid IDs
- 110081675A MA
272389-01 AZ - Medicare enrollment
- Enrolled (PECOS I20081017000329); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 6,825 in Massachusetts → Look up another NPI →
Verify Alireza Toossi in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 234084Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
16.4 times the Medicare Part D claims of the average internal medicine physician in 2024
52,164 Medicare Part D claims for 815 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims. 241 claims were for opioids.
Most prescribed
- Atorvastatin Calcium2,899 claims
- Trazodone Hcl2,255 claims
- Eliquis1,884 claims
- Levothyroxine Sodium1,612 claims
- Amlodipine Besylate1,578 claims
- Gabapentin1,542 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
- Signature Healthcare Medical Group IncBrockton, MA
- Vantage Healthcare LLCCanton, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Alireza Toossi among 6,825 internal medicine physician records in Massachusetts
Alireza Toossi, MD 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 2007, is newer than 46% of them.
- NPI issued2007 · 46% of these records are older, 45% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated1999 · median 2004 among the 4,103 with a school on file
- Record last updated2025 · 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).
2,320 internal medicine physician records list a practice address in Boston
They are 2,320 of the 41,865 NPPES records with a practice address in Boston, and 6,825 internal medicine physician records in Massachusetts.
All 6,825 in Massachusetts → Every provider in Boston → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- David Delsesto, D.O.Boston, MA 022101730374398
- Stephen Boswell, M.D.Boston, MA 022151477541217
- Jennifer Cluett, MDBoston, MA 022151962491183
- Jan Cook, M.D.Boston, MA 022151437152139
- Rachel Freedman, M.D.Boston, MA 022151942297189
- Joseph Gesmundo, MDBoston, MA 022151891785069
- Scott Harris, MDBoston, MA 022151871581694
- Joseph Li, M.D.Boston, MA 022151043209380
Common questions
What is Alireza Toossi, MD's NPI number?
Alireza Toossi, MD's National Provider Identifier (NPI) is 1780871970, issued on Oct 1, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Alireza Toossi, MD located?
The NPPES record lists a practice address at 22 Liberty Dr, Boston, MA, 02210. Phone: (617) 244-1669. Providers update this record themselves, so call before visiting.
How can I verify Alireza Toossi, MD's license?
NPPES lists Massachusetts license number 234084, 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 Alireza Toossi, MD prescribe under Medicare Part D?
In 2024, Alireza Toossi, MD had 52,164 Medicare Part D claims for 815 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.