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MARK FILSTEIN MD PLLC
NPI 1679442511
Internal Medicine in Brooklyn, NY

Active since October 30, 2025
2422 KNAPP ST, BROOKLYN, NY 11235(718) 934-6777 Get Directions Write a Review

NPPES record last updated: October 30, 2025. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Mark Filstein Md Pllc NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MARK FILSTEIN MD PLLC (NPI 1679442511) is a healthcare organization registered as an internal medicine in Brooklyn, New York and active in the NPI registry since October 2025. The organization lists Mark Filstein, Director, as its authorized official.

NPPES Registry Identity

NPI1679442511
Entity TypeOrganization
Primary Taxonomy207R00000X
Legal Business NameMARK FILSTEIN MD PLLC
Location Address2422 KNAPP STBrooklyn, NY 11235-1006
Mailing Address2422 Knapp StBrooklyn, NY 11235-1006 · (718) 934-6777
Phone(718) 934-6777
Organization SubpartNo
Authorized OfficialMark FilsteinDirector · (917) 626-5451
Enumeration DateOctober 30, 2025
NPPES CertifiedOctober 30, 2025
✔ NPI 1679442511 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
2422 KNAPP ST, Brooklyn, NY 11235
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Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

Other Providers at the Same Location NPPES 4

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

INCLUSIVE PHYSICAL THERAPY
Physical Therapist
2422 KNAPP ST
BROOKLYN, NY 11235
Kings County (718) 758-5757
2422 KNAPP ST CHIROPRACTIC PC
Clinic/Center
2422 KNAPP ST
BROOKLYN, NY 11235
Kings County (718) 758-5757
MARK FILSTEIN MD
Specialist
2422 KNAPP ST
BROOKLYN, NY 11235
Kings County (718) 934-6777
HELPING HANDS MEDICAL SERVICES PC
Internal Medicine (Cardiovascular Disease)
2422 KNAPP ST
BROOKLYN, NY 11235
Kings County (347) 462-9208

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Mark Filstein MD PLLC's NPI number?

The NPI number for Mark Filstein MD PLLC is 1679442511. It was assigned to this organization in the NPPES registry on October 30, 2025.

Where is Mark Filstein MD PLLC located?

Mark Filstein MD PLLC is located at 2422 Knapp St, Brooklyn, NY 11235. The listed phone number is (718) 934-6777.

What is Mark Filstein MD PLLC's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

When was this NPI record last updated?

The NPPES record for Mark Filstein MD PLLC was last updated on October 30, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.