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

Dr. Jan Stephen Close, MD

Individual provider Internal Medicine Physician · NPI 1891867180

Dr. Jan Stephen Close, MD is an Internal Medicine Physician in Potsdam, New York. Works from 2 locations. Licensed in New York.

Licensed in
NY
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

50 Leroy St
Potsdam, NY 13676-1786
Phone: (315) 265-3300
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 133 Park St, Malone, NY 12953-1220 — (518) 481-2543

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 151077 (NY)

Record details

NPI number1891867180
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedNovember 14, 2006
Last updated in NPPESJuly 10, 2024
Certification dateJuly 10, 2024
Mailing address50 Leroy St, Potsdam, NY 13676-1786

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