Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. Mark D Fleming, MD

Individual provider Hematology (Pathology) Physician · NPI 1235148404

Dr. Mark D Fleming, MD is a Pathology in Boston, Massachusetts. Graduated from Harvard Medical School in 1993, 33 years ago. Practices with Children's Hospital Pathology Foundation Inc, a 15-clinician group and accepts Medicare assignment. Licensed in Massachusetts.

Years since qualifying
33
Trained at
Harvard Medical School
Licensed in
MA
In the registry since
2006
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

300 Longwood Ave
Boston, MA 02115-5724
Phone: (617) 919-2664
Fax: (617) 730-0168
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Hematology (Pathology) Physician (primary) Taxonomy 207ZH0000X · Licence 153834 (MA)
Anatomic Pathology Physician Taxonomy 207ZP0101X · Licence 153834 (MA)

Record details

NPI number1235148404
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedAugust 6, 2006
Last updated in NPPESAugust 20, 2007
Mailing address300 Longwood Ave, Boston, MA 02115-5724

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyPATHOLOGY
Also practisesHEMATOLOGY
Medical schoolHARVARD MEDICAL SCHOOL
Graduated 1993 (33 years in practice)
Group practice Children'S Hospital Pathology Foundation Inc — 15 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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