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

William S Renk, MD

Individual provider Pediatrics Physician · NPI 1275635211

William S Renk, MD is a Pediatrics Physician in Rockford, 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.

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Practice location Address checks out

3505 N Bell School Rd
Rockford, IL 61114
Phone: (779) 696-0300
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 3775 N Mulford Rd, Rockford, IL 61114 — (779) 696-8400

Specialties & licences

Pediatrics Physician (primary) Taxonomy 208000000X · Licence 036112868 (IL)

Record details

NPI number1275635211
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedSeptember 1, 2006
Last updated in NPPESMay 5, 2023
Certification dateMay 5, 2023
Mailing addressPo Box 78866, Milwaukee, WI 53278-8866

Other providers in Rockford