Medical emergency?Emergency? Call 911. Nearest emergency roomsNearest ERs

Internal Medicine

Alireza Toossi, MD

Works at hospitals in South Weymouth, MA · Massachusetts

Summary

Dr. Alireza Toossi, MD is an internal medicine doctor at 110 Liberty St, Brockton, MA 02301. Phone: (508) 894-0400. Accepts Medicare assignment. In 2024, Alireza Toossi had 891 Original Medicare patients and 2,853 services. NPI 1780871970. Source: CMS National Downloadable File, updated October 2, 2026; CMS Facility Affiliation Data, updated October 2, 2026; CMS Medicare Physician & Other Practitioners, data year 2024.

  • Specialty: Internal medicine doctor (Medicare lists Internal Medicine)
  • Address: 110 Liberty St, Brockton, MA 02301 · Directions (2 more locations)
  • Phone: (508) 894‑0400
  • Medicare: Accepts Medicare assignment
  • Hospital: South Shore Hospital
  • Group practice: Signature Healthcare Medical Group Inc
  • Medical school: graduated 1999 (27 years since medical school)
  • Gender (as listed): Male

From official Medicare data

This page shows what Medicare's official clinician data says about Alireza Toossi, joined by NPI number (data updated October 2, 2026). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

Quick answers

Does Alireza Toossi accept Medicare assignment?
Yes. Medicare's clinician data says Alireza Toossi accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
How many Medicare patients does Alireza Toossi see?
In 2024, CMS data shows 891 Original Medicare patients and 2,853 services for Alireza Toossi. This counts Original Medicare only and measures volume, not quality.
What is Alireza Toossi's NPI number?
1780871970. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Medicare activity in 2024

Official CMS public-use data for Alireza Toossi, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Original Medicare patients891
Services billed to Medicare2,853
Different services or procedures8
Participating Medicare providerYes
Average age of these patients81

Most frequent services

  1. Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, 20 minutes or more (99308)1,373 services
  2. Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes (99309)978 services
  3. Initial nursing facility care with high level of medical decision making, per day, if using time, 50 minutes or more (99306)459 services
  4. Subsequent nursing facility care with straightforward level of medical decision making, per day, if using time, at least 10 minutes (99307)17 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

  • High blood pressure75%
  • High cholesterol75%
  • Anxiety61%
  • Depression59%
  • Arthritis57%
  • Alzheimer's disease or dementia49%

Hospitals where Alireza Toossi works

Medicare's Facility Affiliation Data lists Alireza Toossi at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

  • South Shore HospitalSouth Weymouth, MA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 220100

Practice locations

Addresses where Alireza Toossi is enrolled with Medicare (CMS data updated October 2, 2026).

Group practices

Medicare enrollment lists Alireza Toossi as a member of this group (CMS data updated October 2, 2026).

  • Signature Healthcare Medical Group Inc247 clinicians in the group

Specialties

Find other Internal Medicine doctors in Massachusetts →

Other internal medicine doctors in Brockton

Clinicians with the same Medicare primary specialty in Brockton, MA — not a recommendation.

All internal medicine doctors in Brockton →

Other clinicians in Signature Healthcare Medical Group Inc

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

Clinician information

CredentialMD
Graduation year1999 (27 years since medical school)
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1780871970
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
  2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
  3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
  4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
  5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  6. Medicare Care Compare — official Medicare tool to look up clinicians