John Williams, M.D.
Gastroenterology · Madison, WI
John Williams, M.D. is a gastroenterology in Madison, WI with about 26 yrs in practice.
- SpecialtyGastroenterology
- Medical schoolSAINT LOUIS UNIVERSITY SCHOOL OF MEDICINE (2000)
- TelehealthOffers telehealth visits
- Practice size2,536 clinicians
- Medicare assignmentAccepts assignment (Medicare-approved amount as full payment)
- Medicare activity~365 patients across 580 services, avg age 73
Common services
| Service | Medicare services | Medicare allows | |
|---|---|---|---|
| Biopsy of large bowel using a flexible endoscope | 105 | $135 | See prices → |
| Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 101 | $91 | See prices → |
| Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 81 | $225 | See prices → |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | 25 | $85 | See prices → |
| Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 21 | $92 | See prices → |
| Colorectal cancer screening; colonoscopy on individual at high risk | 15 | $152 | See prices → |
| Diagnostic exam of large bowel using a flexible endoscope | 12 | $166 | See prices → |
Hospital affiliations
Source: CMS Medicare Physician & Other Practitioners and the Doctors & Clinicians National Downloadable File (most recent release). Counts reflect Original Medicare activity only and are not a measure of quality. “Medicare allows” is the Medicare fee schedule amount — not what an insured or cash patient pays; for patient prices see the linked procedure pages. Always confirm a clinician’s current details with their office.