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Physician

JONATHAN WILLIAMS, D.0.

Gastroenterology

KENILWORTH, IL, 60043
NPI: 1013195650

Contact

Gastroenterology

KENILWORTH, IL

NORTHSHORE UNIVERSITY HEALTHSYSTEM - EVANSTON HOSPITAL

847-570-2000

endeavorhealth.org/locations/evanston-hospital

Hospital Affiliations

Search procedure prices at these hospitals only · all code types (Gastroenterology & related)

Common Procedures for Gastroenterology

ColonoscopyUpper Endoscopy (EGD)Capsule EndoscopyLiver BiopsyERCPHemorrhoid BandingPolyp RemovalEsophageal DilationPEG Tube PlacementFibroScan

Based on specialty. Actual services may vary — contact the provider's office to confirm.

Procedure Pricing (Medicare Data)

Based on CMS Medicare Provider Utilization data for 2023. These represent what this physician charged Medicare, not necessarily what you would pay. Compare with other physicians

ProcedureAvg ChargeMedicare AllowedMedicare PaidServices
43249
Balloon dilation of esophagus, stomach, and/or upper small bowel using a flexible endoscope, less than 3.0 cm
$1,243$141$9631
43235
Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope
$833$108$8234
45385
Removal of polyps or growths of large bowel using an endoscope with mechanical snare
$612$258$197176
88342
Special stained specimen slides to examine tissue, initial procedure
$390$33$26294
88341
Special stained specimen slides to examine tissue, each additional procedure
$390$27$2243
88312
Special stained specimen slides to identify organisms including interpretation and report
$390$26$20179
45378
Diagnostic exam of large bowel using a flexible endoscope
$384$185$137117
45380
Biopsy of large bowel using a flexible endoscope
$384$175$132167
43239
Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope
$344$95$73264
88305
Pathology examination of tissue using a microscope, intermediate complexity
$339$36$28840
99223
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes
$288$175$14014
99204
New patient office or other outpatient visit, 45-59 minutes
$144$136$9691
99214
Established patient office or other outpatient visit, 30-39 minutes
$110$102$7133
99233
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes
$104$104$8452
99213
Established patient office or other outpatient visit, 20-29 minutes
$73$67$47455

Compare prices for procedures performed by Gastroenterology physicians

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Physician identity data from the NPPES NPI Registry. Last synced 3/28/2026.