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WILLIAM S RENK MD
NPI 1275635211
Pediatrics in Rockford, IL

Active since September 01, 2006
3505 NORTH BELL SCHOOL ROAD, ROCKFORD, IL 61114(779) 696-0300 Get Directions Write a Review

NPPES record last updated: May 5, 2023. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: May 5, 2023, Feb 19, 2021, Oct 3, 2019 and 1 more (4 updates tracked since 2018).

About William S Renk Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

WILLIAM S RENK MD (NPI 1275635211) is an individual pediatrics provider in Rockford, Illinois, licensed in Illinois (036112868) and active in the NPI registry since September 2006. He maintains a secondary practice location in Rockford.

NPPES Registry Identity

NPI1275635211
Entity TypeIndividualMale
Primary Taxonomy208000000X
Provider Legal NameWILLIAM S RENKCredential: MD
Location Address3505 NORTH BELL SCHOOL ROADRockford, IL 61114
Mailing AddressPo Box 78866Milwaukee, WI 53278-8866 · (779) 696-7150 · Fax (779) 696-7342
Phone(779) 696-0300
Sole ProprietorNo
Enumeration DateSeptember 1, 2006
Last NPPES UpdateMay 5, 20234 updates tracked since enumeration
NPPES CertifiedMay 5, 2023
✔ NPI 1275635211 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians
Taxonomy Code208000000X
License✔ Licensed in IL · 036112868
Definition
A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development.
3505 NORTH BELL SCHOOL ROAD, Rockford, IL 61114
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Secondary Practice Location 1

Location 13775 N Mulford RdRockford, IL 61114 · Phone (779) 696-8400

Other Identifiers 1

Medicaid036112868IL

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Aspirus Health Plan, Quartz.Insurance ›

Other Providers at the Same Location NPPES 9

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

KANEEZ FATIMA ALI MD
Obstetrics & Gynecology
3505 NORTH BELL SCHOOL ROAD
ROCKFORD, IL 61114
Winnebago County (779) 696-0300
DR. DANIEL R HERDEMAN MD
Internal Medicine
3505 NORTH BELL SCHOOL ROAD
ROCKFORD, IL 61114
Winnebago County (779) 696-0300
TIFFANIE S FERRY M.D.
Family Medicine
3505 NORTH BELL SCHOOL ROAD
ROCKFORD, IL 61114
Winnebago County (779) 696-0300
KENDRA M HALL M.D.
Pediatrics
3505 NORTH BELL SCHOOL ROAD
ROCKFORD, IL 61114
Winnebago County (779) 696-0300
PETER F PHELAN MD
Internal Medicine
3505 NORTH BELL SCHOOL ROAD
ROCKFORD, IL 61114
Winnebago County (779) 696-0300
KATHRYN A SPINKER APRN
Nurse Practitioner
3505 NORTH BELL SCHOOL ROAD
ROCKFORD, IL 61114
Winnebago County (779) 696-0300
DR. JURATE MARIJA BUCHA M.D.
Internal Medicine
3505 NORTH BELL SCHOOL ROAD
ROCKFORD, IL 61114
Winnebago County (779) 696-0300
DR. TIMOTHY J DURKEE MD, PHD
Obstetrics & Gynecology
3505 NORTH BELL SCHOOL ROAD
ROCKFORD, IL 61114
Winnebago County (779) 696-0300

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is William Renk's NPI number?

The NPI number for William Renk is 1275635211. It was assigned to this individual provider in the NPPES registry on September 1, 2006.

Where is William Renk located?

William Renk practices at 3505 North Bell School Road, Rockford, IL 61114. The listed phone number is (779) 696-0300.

What is William Renk's specialty?

The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.

What insurance does William Renk accept?

Health plans from Aspirus Health Plan and Quartz list William Renk as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for William Renk was last updated on May 5, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.