MARK D. HOROWITZ MD PC
NPI 1780988717
Internal Medicine - Rheumatology in New York, NY

Q: What is Mark D. Horowitz MD PC's NPI number?

The NPI number for Mark D. Horowitz MD PC is 1780988717. It was assigned to this organization in the NPPES registry on January 5, 2011.

Q: What is Mark D. Horowitz MD PC's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Rheumatology, with taxonomy code 207RR0500X.

Active since January 05, 2011

21 E 90TH ST, NEW YORK, NY 10128(212) 860-3077(212) 410-7410 Get Directions Write a Review

NPPES record last updated: January 5, 2011. Verified against the NPPES registry weekly; last sync: August 09, 2026.

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About Mark D. Horowitz Md Pc NPPES

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

MARK D. HOROWITZ MD PC (NPI 1780988717) is a healthcare organization registered as a rheumatology in New York, New York and active in the NPI registry since January 2011. The organization lists Mark D Horowitz, President, as its authorized official.

NPPES Registry Identity

NPI1780988717

Entity TypeOrganization

Primary Taxonomy207RR0500X

Legal Business NameMARK D. HOROWITZ MD PC

Location Address21 E 90TH STNew York, NY 10128-0654

Mailing Address21 E 90th StNew York, NY 10128-0654 · (212) 860-3077 · Fax (212) 410-7410

Phone(212) 860-3077

Fax(212) 410-7410

Organization SubpartNo

Authorized OfficialMark D HorowitzPresident · (212) 860-3077

Enumeration DateJanuary 5, 2011

✔ NPI 1780988717 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · RheumatologyAllopathic & Osteopathic Physicians

Taxonomy Code207RR0500X

Definition

An internist who treats diseases of joints, muscle, bones and tendons. This specialist diagnoses and treats arthritis, back pain, muscle strains, common athletic injuries and collagen diseases.

21 E 90TH ST, New York, NY 10128

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Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Other Providers at the Same Location NPPES 3

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

MARK D. KAUFMANN M.D.

Dermatology

21 E 90TH ST
NEW YORK, NY 10128

New York County (212) 427-4000

MARK KAUFMANN, M.D., P.C.

Dermatology

21 E 90TH ST
NEW YORK, NY 10128

New York County (212) 427-4000

DR. JAY M BAUMAN M.D.

Obstetrics & Gynecology

21 E 90TH ST
NEW YORK, NY 10128

New York County (212) 410-7400

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 D. Horowitz MD PC's NPI number?

The NPI number for Mark D. Horowitz MD PC is 1780988717. It was assigned to this organization in the NPPES registry on January 5, 2011.

Where is Mark D. Horowitz MD PC located?

Mark D. Horowitz MD PC is located at 21 E 90th St, New York, NY 10128. The listed phone number is (212) 860-3077.

What is Mark D. Horowitz MD PC's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Rheumatology, with taxonomy code 207RR0500X.

When was this NPI record last updated?

The NPPES record for Mark D. Horowitz MD PC was last updated on January 5, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 years 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.