Doctor profile · Federal record

Dr. Mark Filstein, MD

Specialist (CMS: Internal Medicine) · Brooklyn, NY

  • NPI 1649396110
  • 41 yrs in practice
  • Male
  • Solo practice
  • No sanctions

Practice & contact

Operates at 2 locations .

NPPES Updated May 11, 2026
Primary practice
2422 Knapp St
Brooklyn, NY 112351006
(718) 934-6777
Additional location
161 Madison Ave Rm 4E
New York, NY 100165461
(212) 481-4041
fax (212) 481-1008
Mailing address
161 Madison Ave Rm 4E
New York, NY 100165461

Credentials & registration

NPPES · NUCC
NPI registered
March 2007 — 19 yrs on file
Profile last updated
October 30, 2025
Year of graduation
1985 — 41 yrs since
Specialty taxonomy
174400000X — NUCC code
State license (1)
New York #182093

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1649396110. Last verified May 11, 2026.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$383
Transactions
9
Manufacturers
1
Payer (manufacturer) Industry Txns Amount
Abbvie INC. 9 $383.42

By nature of payment

Food and Beverage
$383

Frequently asked questions

Auto-generated from federal data
What is Dr. Mark Filstein's medical specialty?
Dr. Mark Filstein practices Specialist in Brooklyn, NY.
Where does Dr. Mark Filstein practice?
Dr. Mark Filstein practices at 2422 Knapp St, Brooklyn, NY 112351006. Office phone: 7189346777.
What is Dr. Mark Filstein's NPI?
Dr. Mark Filstein's National Provider Identifier (NPI) is 1649396110, issued by NPPES.
Does Dr. Mark Filstein accept Medicare assignment?
Dr. Mark Filstein does not accept Medicare assignment for all services. Patients may be billed amounts beyond Medicare-allowed charges.