Doctor profile · Federal record

Dr. Mark Fleming, MD

Hematology (Pathology) Physician · Anatomic Pathology Physician · Boston, MA

  • NPI 1235148404
  • 20 yrs on file
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
300 Longwood Ave
Boston, MA 021155724
(617) 919-2664
fax (617) 730-0168

Credentials & registration

NPPES · NUCC
NPI registered
August 2006 — 20 yrs on file
Profile last updated
August 20, 2007
Specialty taxonomy
207ZH0000X — NUCC code
State license (1)
Massachusetts #153834

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1235148404. Last verified May 11, 2026.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$6,000
Transactions
2
Manufacturers
1
Payer (manufacturer) Industry Txns Amount
Vertex Pharmaceuticals Incorporated 2 $6,000.00

By nature of payment

Consulting Fee
$6,000

Frequently asked questions

Auto-generated from federal data
What is Dr. Mark Fleming's medical specialty?
Dr. Mark Fleming practices Hematology (Pathology) Physician in Boston, MA.
Where does Dr. Mark Fleming practice?
Dr. Mark Fleming practices at 300 Longwood Ave, Boston, MA 021155724. Office phone: 6179192664.
What is Dr. Mark Fleming's NPI?
Dr. Mark Fleming's National Provider Identifier (NPI) is 1235148404, issued by NPPES.