Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Dr. Mark J Dibenedetto, MD

Individual provider Internal Medicine Physician · NPI 1619940269

Dr. Mark J Dibenedetto, MD is an Internal Medicine in Port Jefferson, New York. Graduated from State University of New York Downstate Medical Center in 1985, 41 years ago. Accepts Medicare assignment and offers telehealth. Licensed in New York.

Years since qualifying
41
Trained at
State University of New York Downstate Medical Center
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

710 Main St
Port Jefferson, NY 11777-2223
Phone: (631) 474-4000
Fax: (631) 474-4011
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 172308 (NY)

Record details

NPI number1619940269
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedFebruary 13, 2006
Last updated in NPPESJuly 8, 2007

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolSTATE UNIVERSITY OF NEW YORK DOWNSTATE MEDICAL CENTER
Graduated 1985 (41 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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