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

Stephen Herbert Kozlowski, MD

Individual provider Rheumatology Physician · NPI 1285749390

Stephen Herbert Kozlowski, MD is a Rheumatology Physician in Crystal Lake, Illinois. Works from 2 locations. Licensed in Illinois.

Licensed in
IL
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

360 Station Dr
Crystal Lake, IL 60014-7978
Phone: (815) 338-6600
Show map & directions

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

Additional practice locations (1)

  • 2111 Midlands Ct, Sycamore, IL 60178-3125 — (815) 758-0000

Specialties & licences

Rheumatology Physician (primary) Taxonomy 207RR0500X · Licence 036-053309 (IL)

Record details

NPI number1285749390
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedAugust 20, 2006
Last updated in NPPESJuly 21, 2022