Mark Sabbagh, MD, PHD
NPI 1639591340 · Anatomic Pathology Physician · Boston, MA
Enrolled with Medicare as Practitioner - Pathology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Sabbagh, MD, PHD is a Anatomic Pathology Physician provider in Boston, MA (NPI 1639591340).
Provider details
- NPI number
- 1639591340
- Entity type
- Individual
- Primary specialty
- Anatomic Pathology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD, PHD
- Sex
- Male
- Sole proprietor
- No
- License
- 1019280 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
12 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
3 documented practice locations
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Additional practice locations (2)
- 75 Francis StBoston, MA 02115-6110Phone: (617) 732-5500
- 600 N Wolfe StBaltimore, MD 21287-2109Phone: (410) 955-5000
Registry dates
- Enumerated
- 2014-01-15
- Last updated
- 2025-12-02
- Certified
- 2025-12-02
Frequently asked questions
- What is Mark Sabbagh's NPI number?
- Mark Sabbagh's National Provider Identifier (NPI) is 1639591340, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Sabbagh's specialty?
- Mark Sabbagh is listed in the NPPES registry with a primary specialty of Anatomic Pathology Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Sabbagh located?
- Mark Sabbagh's practice location on file with NPPES is 55 Fruit St, Boston, MA 02114-2696.
- What is Mark Sabbagh's phone number?
- The practice phone number listed in the NPPES registry for Mark Sabbagh is (617) 726-0367.
- Does Mark Sabbagh accept Medicare?
- Mark Sabbagh is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Sabbagh's NPI active?
- Yes — Mark Sabbagh's NPI (1639591340) is active in the NPPES registry as of the last update on 2025-12-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.