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

Dr. Matthew O. Horowitz, MD

Individual provider Gastroenterology Physician · NPI 1225110901

Dr. Matthew O. Horowitz, MD is an Internal Medicine in Great Neck, New York. Graduated from State University of New York at Stony Brook, School of Medicine in 1992, 34 years ago. Practices with North Shore-Lij Medical PC, a 6,350-clinician group, accepts Medicare assignment and offers telehealth. Licensed in New York.

Years since qualifying
34
Trained at
State University of New York at Stony Brook, School of Medicine
Licensed in
NY
In the registry since
2006
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

560 Northern Blvd Ste 203
Great Neck, NY 11021-5100
Phone: (516) 482-0600
Fax: (516) 829-9674
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Specialties & licences

Gastroenterology Physician (primary) Taxonomy 207RG0100X · Licence 197394 (NY)

Record details

NPI number1225110901
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedOctober 20, 2006
Last updated in NPPESDecember 3, 2009
Mailing address560 Northern Blvd, Suite 203, Great Neck, NY 11021-5100

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Also practisesGASTROENTEROLOGY
Medical schoolSTATE UNIVERSITY OF NEW YORK AT STONY BROOK, SCHOOL OF MEDICINE
Graduated 1992 (34 years in practice)
Group practice North Shore-Lij Medical Pc — 6350 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations7 on file with Medicare

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