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MAZEN TOUSHAN M.D.
NPI 1407262918
Pathology - Anatomic Pathology & Clinical Pathology in Brighton, MA

Active since July 03, 2014PECOS EnrolledAccepts Medicare Assignment
736 CAMBRIDGE ST., BRIGHTON, MA 02135(617) 789-7575 Get Directions Write a Review

NPPES record last updated: June 29, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Jun 10, 2019, Jun 14, 2018 (2 updates tracked since 2018).

About Mazen Toushan M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MAZEN TOUSHAN M.D. (NPI 1407262918) is an individual anatomic pathology & clinical pathology provider in Brighton, Massachusetts, licensed in Massachusetts (290712) and active in the NPI registry since July 2014. He is enrolled in Medicare PECOS, is affiliated with St Elizabeth's Medical Center, and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1407262918
Entity TypeIndividualMale
Primary Taxonomy207ZP0102X
Provider Legal NameMAZEN TOUSHANCredential: M.D.
Location Address736 CAMBRIDGE ST.Brighton, MA 02135
Mailing Address960 Massachusetts Avenue, Fl 2Milwaukee, MA 02118-2690
Phone(617) 789-7575
Sole ProprietorNo
Medical School CMSOtherGraduated 2009
Enumeration DateJuly 3, 2014
Last NPPES UpdateJune 29, 20262 updates tracked since enumeration
NPPES CertifiedJune 29, 2026
✔ NPI 1407262918 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPathology · Anatomic Pathology & Clinical PathologyAllopathic & Osteopathic Physicians
Taxonomy Code207ZP0102X
License✔ Licensed in MA · 290712
Definition
A pathologist deals with the causes and nature of disease and contributes to diagnosis, prognosis and treatment through knowledge gained by the laboratory application of the biologic, chemical and physical sciences. A pathologist uses information gathered from the microscopic examination of tissue specimens, cells and body fluids, and from clinical laboratory tests on body fluids and secretions for the diagnosis, exclusion and monitoring of disease.
Also ListedPathology · Blood Banking & Transfusion MedicineTaxonomy 207ZB0001X · License 290712 (MA)
736 CAMBRIDGE ST., Brighton, MA 02135
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Secondary Practice Locations 2

Location 1670 Albany St, Suite 304Boston, MA 02118-2646 · Phone (617) 414-4291 · Fax (617) 414-5315
Location 2235 N. Pearl St.Brockton, MA 02301 · Phone (508) 427-3098

Other Identifiers 1

Medicaid110179980AMA

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include WellSense Health Plan.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Mazen Toushan M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID2860726338
PECOS Enrollment IDI20211203001101
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

4

Medicare enrollment records show Mazen Toushan reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Steward Medical Group, Inc
0.3 mi
Specialist
77 WARREN ST
Brighton, MA 02135
  • Reassigned Medicare billing, Massachusetts enrollment
  • 26 clinicians in this Medicare group
NPI 1013220151 (615) 467-4158
Bmc Affiliated Physicians, Inc.
3.9 mi
Internal Medicine
1 BOSTON MEDICAL CENTER PLACE
Boston, MA 02118
  • Reassigned Medicare billing, Massachusetts enrollment
  • 716 clinicians in this Medicare group
NPI 1245320910 (617) 789-3000
Boston University Mallory Pathology Associates, Inc.
4.1 mi
Anatomic Pathology & Clinical Pathology
670 ALBANY ST, SUITE 304
Boston, MA 02118
  • Reassigned Medicare billing, Massachusetts enrollment
  • 28 clinicians in this Medicare group
NPI 1457308637 (617) 414-4291
Lifespan Physician Group Of Massachusetts Inc
27 mi
Family Medicine
2007 BAY ST
Taunton, MA 02780
  • Reassigned Medicare billing, Massachusetts enrollment
  • 547 clinicians in this Medicare group
NPI 1235957713 (774) 409-2009

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 10

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Pathology examination of tissue using a microscope, intermediate complexity 88305
A pathology examination of tissue with intermediate complexity involves studying a small sample of your body tissue under a microscope. This helps in identifying any abnormal cells or signs of disease. It's a detailed process requiring expert analysis to ensure accurate results.
836 services433 patients
Special stained specimen slides to examine tissue, initial procedure 88342
This procedure involves the use of specially stained slides to examine tissue samples. The initial process involves obtaining a small tissue sample from your body. This sample is then placed on a slide and stained with special dyes to highlight different structures and elements. The stained slide is then examined under a microscope to help diagnose any potential health issues.
221 services165 patients
Special stained specimen slides to examine tissue, each additional procedure 88341
Special stained specimen slides are used to analyze tissue in detail. In this process, extra procedures may be needed for a more thorough examination. These involve applying special stains to the tissue on slides, enhancing specific elements for closer study.
200 services65 patients
Special stained specimen slides to identify organisms including interpretation and report 88312
This service involves coloring specimen slides in a special way to help identify organisms. The colors make different parts of the organism stand out. Afterward, a detailed interpretation and report on the findings are provided.
76 services40 patients
Special stained specimen slides to examine tissue including interpretation and report 88313
Special stained specimen slides are used to examine tissue samples. This involves applying special dyes to the tissue, which helps to highlight certain features under a microscope. The findings are then interpreted and a report is provided. This can aid in diagnosing various health conditions.
71 services41 patients
Pathology examination of tissue using a microscope, moderately low complexity 88304
A pathology examination of tissue, moderately low complexity, involves studying a small sample of your body tissue under a microscope. It helps to identify any abnormal cells or diseases. It's a routine procedure, not complex, and provides crucial insights for your diagnosis.
66 services59 patients

Hospital Affiliations CMS Care Compare 2

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

St Elizabeth's Medical Center

Acute Care Hospitals · Brighton, MA
2/5 CMS rating
OwnershipProprietary
CMS Certification Number220036
Location736 Cambridge StreetBrighton, MA 02135 · Suffolk County
Emergency services Birthing friendly

Good Samaritan Medical Center

Acute Care Hospitals · Brockton, MA
2/5 CMS rating
OwnershipProprietary
CMS Certification Number220111
Location235 North Pearl StreetBrockton, MA 02301 · Plymouth County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 02135 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$144.11 typical visit price
range $63.72 – $189.86
Typical copayment $36.02 (range $15.93 – $47.46)
Most-billed visit code 99204
Established Patient
$111.18 typical visit price
range $21.07 – $155.29
Typical copayment $27.79 (range $5.26 – $38.82)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 9

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MS. SOPHIO MSHVILDADZE M.D
Student in an Organized Health Care Education/Training Program
736 CAMBRIDGE ST.
BOSTON, MA 02135
Suffolk County (617) 779-6342
PETER P LACAMERA MD
Internal Medicine (Pulmonary Disease)
736 CAMBRIDGE ST., PULMONARY
BOSTON, MA 02135
Suffolk County (617) 789-2545
MICHAELA COLLEEN BARRY MD
Internal Medicine (Infectious Disease)
736 CAMBRIDGE ST.
BRIGHTON, MA 02135
Suffolk County (617) 789-3000
DR. MICHAEL D KNEELAND MD
Internal Medicine
736 CAMBRIDGE ST.
BOSTON, MA 02135
Suffolk County (617) 789-3388
MS. ANANO NEBIERIDZE M.D.
Student in an Organized Health Care Education/Training Program
736 CAMBRIDGE ST.
BOSTON, MA 02135
Suffolk County (617) 779-6342
FRANK C BIELLO JR. PA
Physician Assistant
736 CAMBRIDGE ST.
BOSTON, MA 02135
Suffolk County (617) 789-2045
MR. MOHAMED ASHRAF ABDELAZEEM
Student in an Organized Health Care Education/Training Program
736 CAMBRIDGE ST.
BRIGHTON, MA 02135
Suffolk County (617) 789-3000
DR. NANCY SHEAU LAN LOUCA M.D.
Emergency Medicine
736 CAMBRIDGE ST., EMERGENCY DEPARTMENT, ST. ELIZABETH'S MEDICAL CENTER
BRIGHTON, MA 02135
Suffolk County (646) 643-6707

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Mazen Toushan's NPI number?

The NPI number for Mazen Toushan is 1407262918. It was assigned to this individual provider in the NPPES registry on July 3, 2014.

Where is Mazen Toushan located?

Mazen Toushan practices at 736 Cambridge St., Brighton, MA 02135. The listed phone number is (617) 789-7575.

What is Mazen Toushan's specialty?

The primary specialty registered for this NPI is Pathology, specializing in Anatomic Pathology & Clinical Pathology, with taxonomy code 207ZP0102X.

Is Mazen Toushan enrolled in Medicare?

Yes. Mazen Toushan is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Mazen Toushan's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mazen Toushan reassigns Medicare benefits to 4 organizations: Steward Medical Group, Inc (Brighton, MA), Bmc Affiliated Physicians, Inc. (Boston, MA), Boston University Mallory Pathology Associates, Inc. (Boston, MA) and Lifespan Physician Group Of Massachusetts Inc (Taunton, MA). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Mazen Toushan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Mazen Toushan accept?

Health plans from WellSense Health Plan list Mazen Toushan as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Mazen Toushan affiliated with any hospitals?

According to CMS data, Mazen Toushan is affiliated with St Elizabeth's Medical Center and Good Samaritan Medical Center.

When was this NPI record last updated?

The NPPES record for Mazen Toushan was last updated on June 29, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.