Independent US Healthcare Provider Directory & Public Medical Database
Active NPI 1639591340 Individual Practitioner Male Practitioner

Dr. Mark Fares Sabbagh , MD, PhD

Pathology - Anatomic Pathology • Boston, MA

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Dr. Mark Sabbagh, MD, PhD is a certified Pathology - Anatomic Pathology practicing in Boston, MA. With approximately 5 years of clinical experience since graduating from Johns Hopkins University School Of Medicine in 2021, Dr. Sabbagh delivers high-quality medical care to the local community at 55 FRUIT ST.

Dr. Sabbagh is affiliated with Massachusetts General Physicians Organization Inc and accepts Medicare assignment.

Practice Location & Contact Primary Location

Practice Address

55 Fruit St

Boston, MA 021142696

Telephone 6177260367
Associated Practice Facility / Clinic

Medicare Profile & Education

Medical School

Johns Hopkins University School Of Medicine

Graduation Year

2021

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Pathology - Anatomic Pathology in Boston, MA

Experienced Practitioner (5-10 Yrs)
Practitioner Clinical Experience
5 Yrs -20.8 yrs vs City Avg
City Avg: 25.8 Yrs
State Avg: 35.7 Yrs
Regional Practice Density
201 Specialists

Practicing in Boston, MA (303 Statewide)

Telehealth Adoption Rate
0.5% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount
67.4% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Sabbagh (5 Years) 5 Yrs
Boston Specialty Average (25.8 Years) 25.8 Yrs

Medical Specialties & State Licenses

CMS Verified: 2025-12-02
Pathology - Anatomic Pathology Primary Specialty

NUCC Taxonomy Code: 207ZP0101X

State License MA 1019280

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.

Pathology - Anatomic Pathology & Clinical Pathology

NUCC Taxonomy Code: 207ZP0102X

State License MA 1019280

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.

Student in an Organized Health Care Education/Training Program

NUCC Taxonomy Code: 390200000X

An individual who is enrolled in an organized health care education/training program leading to a degree, certification, registration, and/or licensure to provide health care.

Hospital & Practice Group Affiliations

Massachusetts General Physicians Organization Inc

55 Fruit St, Boston, MA 021142696

Phone: 6177240287

Secondary Practice Locations

600 N Wolfe St

Baltimore, MD 212872109

Phone: 4109555000

75 Francis St

Boston, MA 021156110

Phone: 6177325500

Practice Associates & Co-Workers

Healthcare professionals and specialists practicing at this location or sharing practice phone/fax

6 Associated Practitioners
Christopher Mount

Pathology - Neuropathology

NPI 1588291850
Ting Zhao

Student in an Organized Health Care Education/Training Program

NPI 1710637251
Dr. Akshay Dalal , MBBS

Anesthesiology - Pain Medicine

NPI 1760472120

Bachelor of Medicine, Bachelor of Surgery (M.B.B.S.)

Surya Nagaraja

Student in an Organized Health Care Education/Training Program

NPI 1861029100
Dr. Uriel Bulow , MD

Pathology - Clinical Pathology/Laboratory Medicine

NPI 1902556087

Doctor of Medicine (M.D.)

Dr. Miranda Machacek , MD, PhD

Pathology - Anatomic Pathology

NPI 1932736840

Doctor of Medicine (M.D.), Doctor of Philosophy (Ph.D.)

Career & Practice History Timeline

Chronological log of verified NPI updates, location relocations, credentials, and registry changes

14 Historical Events
🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) December 02, 2025

Pathology (License #1019280 in MA)

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) February 24, 2025

Pathology (License #1019280 in MA)

📍
Updated Business Mailing Address January 14, 2025

Registered at 208 CHARLES ST, CAMBRIDGE, MA 021412004 (Tel: 7134834722)

👤
Provider Name / Credentials Updated January 14, 2025

Recorded as MARK SABBAGH, MD, PHD

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) January 14, 2025

Pathology (License #1019280 in MA)

📍
Updated Practice Location March 28, 2021

Registered at 55 FRUIT ST, BOSTON, MA 021142696 (Tel: 6177260367)

📍
Updated Business Mailing Address March 28, 2021

Registered at 29 S CHAPEL ST, BALTIMORE, MD 212311904 (Tel: 7134834722)

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) March 28, 2021

Pathology (License #PENDING in MA)

NPI Profile Active January 15, 2014

NPI status registered as active in NPPES database

📍
Updated Practice Location January 15, 2014

Registered at 600 N WOLFE ST, BALTIMORE, MD 212872109 (Tel: 4109555000)

📍
Updated Business Mailing Address January 15, 2014

Registered at 733 RUTLAND AVENUE, BALTIMORE, MD 212052109 (Tel: 4109553080)

👤
Provider Name / Credentials Updated January 15, 2014

Recorded as MARK SABBAGH

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) January 15, 2014

Student in an Organized Health Care Education/Training Program

🟢
Initial NPI Registration & Enumeration January 15, 2014

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

Verified patient ratings, medical care experiences, and facility photos

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NPI Administrative Meta

NPI Number: 1639591340
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: January 15, 2014
Last Update: December 02, 2025
Sole Proprietor: No

Mailing Address

208 Charles St

Cambridge, MA 021412004

Phone: 7134834722

Public Domain Record This profile contains public domain information published by CMS and NPPES under the Freedom of Information Act (FOIA).
⚠️ Medical Disclaimer

This directory listing is for informational purposes only and does not constitute medical advice, diagnosis, or physician endorsement. If you are experiencing a medical emergency, please call 911 immediately.