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

Jan M Karczewski, MD

Individual provider Rheumatology Physician · NPI 1902291099

Jan M Karczewski, MD is a Rheumatology in Warwick, Rhode Island. Qualified in 2015, 11 years ago. Practices with Affinity Physicians LLC, a 734-clinician group, works from 3 locations and accepts Medicare assignment. Licensed in Rhode Island.

Years since qualifying
11
Licensed in
RI
In the registry since
2015
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

455 Toll Gate Rd Asp Bldg Ste Peach
Warwick, RI 02886-2759
Phone: (401) 681-2858
Fax: (401) 921-6943
Show map & directions

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

Additional practice locations (2)

  • 111 Brewster St, Pawtucket, RI 02860-4400 — (401) 681-2858
  • 101 Dudley St, Providence, RI 02905-2401 — (401) 453-7950

Specialties & licences

Rheumatology Physician (primary) Taxonomy 207RR0500X · Licence MD17104 (RI)

Record details

NPI number1902291099
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedApril 6, 2015
Last updated in NPPESJuly 12, 2024
Certification dateJuly 12, 2024

Medicare enrollment

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

Medicare specialtyRHEUMATOLOGY
Medical schoolOTHER
Graduated 2015 (11 years in practice)
Group practice Affinity Physicians Llc. — 734 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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