Individual Healthcare Provider
Mark D Fleming, MD
Provider's NPPES record last updated: August 20, 2007
Overview
- Entity Type
- Individual Healthcare Provider
- NPI
- 1235148404
- Primary Specialty
- Pathology — Hematology
- Practice Location
- Boston, Massachusetts
- Sole Proprietor
- No
Federal Screening
NPISignal checked this NPI against federal exclusion sources. Results below are based on the NPI number itself — an identifier match, not a name match.
List of Excluded Individuals/Entities (LEIE)
HHS Office of Inspector General
No potential match was identified in NPISignal's indexed List of Excluded Individuals/Entities (LEIE) records as of 2026-09-10.
- Source data
- September 10, 2026
- Records indexed
- 84,001
- Screened
- Sep 17, 2026, 11:36 PM UTC
This reflects only the records NPISignal currently holds and the identity information supplied. It is not a verification of eligibility, licensure, or compliance. Verify decisions that matter against the authoritative source.
SAM.gov Exclusions
U.S. General Services Administration
SAM.gov Exclusions was not checked.
SAM.gov screening is not configured on this deployment. No SAM check has been performed.
- Screened
- Not checked
This is an NPI-based check only. NPISignal does not publish name-based exclusion matches on a provider profile. A shared or similar name is a lead that requires human review, not an identification, and this page is not the place to make one. Run a name-based screening below to see potential matches with the reasons for each.
This reflects only the records NPISignal currently holds and the identity information supplied. It is not a verification of eligibility, licensure, or compliance. Verify decisions that matter against the authoritative source.
Searches OIG LEIE and SAM.gov by name and reviews every potential match.
Specialties & Taxonomies
- Primary
Pathology
Hematology
Allopathic & Osteopathic Physicians
A hematopathologist is expert in diseases that affect blood cells, blood clotting mechanisms, bone marrow and lymph nodes. This physician has the knowledge and technical skills essential for the laboratory diagnosis of anemias, leukemias, lymphomas, bleeding disorders and blood clotting disorders.
Taxonomy code 207ZH0000X Pathology
Anatomic Pathology
Allopathic & Osteopathic Physicians
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.
Taxonomy code 207ZP0101X
Provider-Reported License Information
- Pathology (Massachusetts)
- 153834
- Pathology (Massachusetts)
- 153834
Practice Locations
Practice Location
300 Longwood Ave
Boston, Massachusetts 02115-5724
Phone: (617) 919-2664
Record Information
- Enumeration Date
- August 6, 2006
- Provider's NPPES Record Last Updated
- August 20, 2007
- NPISignal NPPES Dataset
- August 2026
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