Physician Profile
Unclaimed ProfileAbout WILLIAMS
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Education & Training
Areas of Expertise
Common questions
What does Dr. Williams specialise in?
Dr. Williams is a gastroenterology in Kenilworth, IL. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “GASTROENTEROLOGY”.
NPI registry
Where is Dr. Williams located?
Dr. Williams is listed at 510 GREEN BAY RD, Kenilworth, IL 60043. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Williams's phone number?
The number on file is (847) 256-3400. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Williams's NPI number?
Dr. Williams's National Provider Identifier is 1013195650. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Dr. Williams go to medical school?
Dr. Williams attended Other, graduating in 2002. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Williams been practising?
Dr. Williams has 24 years experience. Calculated from a graduation year of 2002, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Williams do most often?
According to Medicare billing data, Dr. Williams performs procedures including biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope, removal of polyps or growths of large bowel using an endoscope with mechanical snare and biopsy of large bowel using a flexible endoscope, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Williams confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Williams. If this is you, claiming it is free.
Guide.md
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (847) 256-3400
- Email not available
Practice Locations
510 GREEN BAY RD
Kenilworth, IL 60043
Procedures Most Often Billed to Medicare
3,749 services · 2,810 patients · 19 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | Procedure | 43239 |
269 |
| Removal of polyps or growths of large bowel using an endoscope with mechanical snare | Procedure | 45385 |
253 |
| Biopsy of large bowel using a flexible endoscope | Procedure | 45380 |
186 |
| Diagnostic exam of large bowel using a flexible endoscope | Procedure | 45378 |
136 |
| Balloon dilation of esophagus, stomach, and/or upper small bowel using a flexible endoscope, less than 3.0 cm | Procedure | 43249 |
47 |
| Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope | Procedure | 43235 |
22 |
| Pathology examination of tissue using a microscope, intermediate complexity | Lab test | 88305 |
1,049 |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
478 |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
362 |
| Special stained specimen slides to examine tissue, initial procedure | Lab test | 88342 |
259 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other gastroenterology specialists at this location 1
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 1
Clinically related specialties at the same address — the people this provider most likely works alongside.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
More connections — 16 related providers in 2 groups
Class of 2002 at Other 8
Providers who graduated from the same medical school in the same year.
Also performs Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope 8
Providers in IL who bill this service to Medicare most often.
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.