Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. Alireza Toossi, MD

Individual provider Internal Medicine Physician · NPI 1780871970

Dr. Alireza Toossi, MD practises Internal Medicine in Boston, Massachusetts. Qualified in 1999, 27 years ago. Practices with Signature Healthcare Medical Group Inc, a 248-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Arizona and Massachusetts.

Years since qualifying
27
Licensed in
AZ, MA
In the registry since
2007
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

22 Liberty Dr Ste 6F
Boston, MA 02210
Phone: (617) 244-1669
Fax: (617) 244-6769
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 110 Liberty St, Brockton, MA 02301-5674 — (508) 941-7000

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 234084 (MA)
Internal Medicine Physician Taxonomy 207R00000X · Licence 37478 (AZ)

Record details

NPI number1780871970
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedOctober 1, 2007
Last updated in NPPESAugust 12, 2025
Certification dateAugust 12, 2025

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyINTERNAL MEDICINE
Medical schoolOTHER
Graduated 1999 (27 years in practice)
Group practice Signature Healthcare Medical Group Inc — 248 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients891
Services billed 2,853 a service is one billed item, such as a visit, a test or a procedure
Average patient age81

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

Colleagues at Signature Healthcare Medical Group Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 248 clinicians in the practice; 12 are shown here.

Other providers in Boston