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GRETCHEN KATHLEEN WILLIAMS D.O
NPI 1659663581
Surgery in Kankakee, IL

Active since May 11, 2011PECOS EnrolledAccepts Medicare Assignment
400 N WALL ST STE B410, KANKAKEE, IL 60901(815) 933-2221(815) 933-3975 Get Directions Write a Review

NPPES record last updated: February 9, 2021. Verified against the NPPES registry weekly; last sync: October 04, 2026.

About Gretchen Kathleen Williams D.o NPPES

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

GRETCHEN KATHLEEN WILLIAMS D.O (NPI 1659663581) is an individual surgery provider in Kankakee, Illinois, licensed in Michigan (5101019120) and active in the NPI registry since May 2011. She is enrolled in Medicare PECOS, is affiliated with Riverside Medical Center, and is a graduate of At Still University Of Health Sciences, College Of Osteo Med, Kirksville (2011).

NPPES Registry Identity

NPI1659663581
Entity TypeIndividualFemale
Primary Taxonomy208600000X
Provider Legal NameGRETCHEN KATHLEEN WILLIAMSCredential: D.O
Location Address400 N WALL ST STE B410Kankakee, IL 60901-2940
Mailing Address400 N Wall St Ste B410Kankakee, IL 60901-2940 · (815) 933-2221 · Fax (815) 933-3975
Phone(815) 933-2221
Fax(815) 933-3975
Sole ProprietorYes
Medical School CMSAt Still University Of Health Sciences, College Of Osteo Med, KirksvilleGraduated 2011
Enumeration DateMay 11, 2011
Last NPPES UpdateFebruary 9, 2021
NPPES CertifiedFebruary 9, 2021
✔ NPI 1659663581 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySurgeryAllopathic & Osteopathic Physicians
Taxonomy Code208600000X
License✔ Licensed in MI · 5101019120
Definition
A general surgeon has expertise related to the diagnosis - preoperative, operative and postoperative management - and management of complications of surgical conditions in the following areas: alimentary tract; abdomen; breast, skin and soft tissue; endocrine system; head and neck surgery; pediatric surgery; surgical critical care; surgical oncology; trauma and burns; and vascular surgery. General surgeons increasingly provide care through the use of minimally invasive and endoscopic techniques. Many general surgeons also possess expertise in transplantation surgery, plastic surgery and cardiothoracic surgery.
400 N WALL ST STE B410, Kankakee, IL 60901
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Home State Health, Ambetter Health, Ambetter Health of Delaware.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Gretchen Kathleen Williams D.o is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID143517151
PECOS Enrollment IDI20160919002554
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 9

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more 99203
This service involves an initial office or outpatient visit for a new patient. The healthcare professional will spend 30-44 minutes understanding your health history, current issues, and discussing possible treatment plans. It's a comprehensive evaluation to start your healthcare journey.
80 services80 patients
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222
Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.
72 services68 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
62 services36 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
59 services50 patients
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204
This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.
35 services35 patients
Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes 99231
Follow-up hospital inpatient care is a daily service where a healthcare professional checks on your health progress during your hospital stay. Each session typically lasts 15 minutes, involving updates on your condition and adjustments to your treatment plan, if necessary.
29 services24 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Riverside Medical Center

Acute Care Hospitals · Kankakee, IL
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number140186
Location350 N Wall StKankakee, IL 60901 · Kankakee County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60901 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$85.71 typical visit price
range $54.80 – $168.44
Typical copayment $21.42 (range $13.70 – $42.11)
Most-billed visit code 99203
Established Patient
$68.64 typical visit price
range $17.16 – $136.56
Typical copayment $17.16 (range $4.29 – $34.14)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Referred Medical Equipment & Supplies CMS DME claims

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Ostomy pouch, drainable; for use on barrier with non-locking flange, with filter (2 piece system), each A4425
DME-Orthotic Devices · category DF010N
2 suppliers15 claims160 services$3.46 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 4

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

DR. ALINE V DANG DO
Surgery
400 N WALL ST STE B410
KANKAKEE, IL 60901
Kankakee County (815) 933-2221
STEVEN ANTHONY GROENE
Surgery
400 N WALL ST STE B410
KANKAKEE, IL 60901
Kankakee County (815) 933-2221
DR. KAY CHOW TIMBERS MD
Surgery
400 N WALL ST STE B410
KANKAKEE, IL 60901
Kankakee County (815) 933-2221
DR. VINAY V BAJAJ M.D.
Surgery
400 N WALL ST STE B410
KANKAKEE, IL 60901
Kankakee County (815) 933-2221

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 Gretchen Williams's NPI number?

The NPI number for Gretchen Williams is 1659663581. It was assigned to this individual provider in the NPPES registry on May 11, 2011.

Where is Gretchen Williams located?

Gretchen Williams practices at 400 N Wall St Ste B410, Kankakee, IL 60901. The listed phone number is (815) 933-2221.

What is Gretchen Williams's specialty?

The primary specialty registered for this NPI is Surgery with taxonomy code 208600000X.

Is Gretchen Williams enrolled in Medicare?

Yes. Gretchen Williams is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does Gretchen Williams accept?

Health plans from Ambetter Health, Ambetter Health of Delaware and Ambetter from Home State Health list Gretchen Williams 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.

Is Gretchen Williams affiliated with any hospitals?

According to CMS data, Gretchen Williams is affiliated with Riverside Medical Center.

When was this NPI record last updated?

The NPPES record for Gretchen Williams was last updated on February 9, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.