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

Individual provider Internal Medicine Physician · NPI 1710909502

Mark L Bernstein, MD is an Internal Medicine Physician in Stony Brook, New York. Licensed in New York. Registered with an NPI since 2006.

Licensed in
NY
In the registry since
2006
Specialties on file
2
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

2500 Route 347 Bldg 8D
Stony Brook, NY 11790
Phone: (631) 689-7780
Fax: (631) 689-5669
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Rheumatology Physician (primary) Taxonomy 207RR0500X · Licence 1419400 (NY)
Internal Medicine Physician Taxonomy 207R00000X · Licence 1419400 (NY)

Record details

NPI number1710909502
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 24, 2006
Last updated in NPPESJune 29, 2010
Mailing address2500 Route 347, Bldg 8d, Stony Brook, NY 11790

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