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

Gretchen Kathleen Williams, DO

Individual provider Surgery Physician · NPI 1659663581

Gretchen Kathleen Williams, DO is a General Surgery in Kankakee, Illinois. Graduated from At Still University of Health Sciences, College of Osteo Med, Kirksville in 2011, 15 years ago. Practices with Riverside Health System, a 205-clinician group and accepts Medicare assignment. Licensed in Michigan.

Years since qualifying
15
Trained at
At Still University of Health Sciences, College of Osteo Med, Kirksville
Licensed in
MI
In the registry since
2011
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

400 N Wall St Ste B410
Kankakee, IL 60901-2940
Phone: (815) 933-2221
Fax: (815) 933-3975
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Surgery Physician (primary) Taxonomy 208600000X · Licence 5101019120 (MI)

Record details

NPI number1659663581
Entity typeIndividual (Type 1)
GenderFemale
Credentials DO
Sole proprietorYes
NPI enumeratedMay 11, 2011
Last updated in NPPESFebruary 9, 2021
Certification dateFebruary 9, 2021

Medicare enrollment

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

Medicare specialtyGENERAL SURGERY
Medical schoolAT STILL UNIVERSITY OF HEALTH SCIENCES, COLLEGE OF OSTEO MED, KIRKSVILLE
Graduated 2011 (15 years in practice)
Group practice Riverside Health System — 205 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations4 on file with Medicare

Other providers in Kankakee