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

Dr. John S Wisniewski, MD

Individual provider Internal Medicine Physician · NPI 1689786568

Dr. John S Wisniewski, MD is an Internal Medicine in Hartford, Connecticut. Graduated from State University of Ny Upstate Medical University in 1995, 31 years ago. Practices with Starling Physicians, PLLC, a 278-clinician group and accepts Medicare assignment. Licensed in Connecticut.

Years since qualifying
31
Trained at
State University of Ny Upstate Medical University
Licensed in
CT
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

85 Seymour St Ste 900
Hartford, CT 06106-5501
Phone: (860) 241-0700
Fax: (860) 525-7881
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 046333 (CT)

Record details

NPI number1689786568
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedAugust 31, 2006
Last updated in NPPESJanuary 22, 2010
Mailing address2110 Silas Deane Hwy, Rocky Hill, CT 06067-2313

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolSTATE UNIVERSITY OF NY UPSTATE MEDICAL UNIVERSITY
Graduated 1995 (31 years in practice)
Group practice Starling Physicians, Pllc — 278 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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