Dr. John Williams, M.D

NPI: 1265516421
Medicare Patients
1,768
Medicare Billing
$192,929

Medicare Billing by Year

Year Procedures Beneficiaries Services Submitted Medicare Paid
2023 10 454 463 $886,203 $49,888
2022 11 489 501 $927,000 $52,170
2021 9 433 456 $786,665 $46,554
2020 12 392 426 $640,405 $44,317
Total Patients
1,768
Total Services
1,846
Medicare Billing
$192,929
Procedure Codes
56

All Medicare Procedures & Services

56 procedure records from CMS Medicare Utilization — Page 1 of 3

HCPCS Description Setting Year Patients Services Charges Medicare Paid Ratio
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare Office 2023 49 50 $137,500 $9,257 6.7%
45380 Biopsy of large bowel using a flexible endoscope Office 2023 81 81 $182,720 $8,244 4.5%
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare Facility 2023 36 36 $99,000 $6,602 6.7%
45380 Biopsy of large bowel using a flexible endoscope Facility 2023 51 52 $117,302 $4,715 4.0%
G0105 Colorectal cancer screening; colonoscopy on individual at high risk Office 2023 23 23 $51,237 $3,770 7.4%
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope Facility 2023 54 55 $99,083 $3,562 3.6%
G0105 Colorectal cancer screening; colonoscopy on individual at high risk Facility 2023 15 15 $33,416 $2,513 7.5%
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope Office 2023 41 44 $79,266 $2,498 3.2%
99222 Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes Facility 2023 25 25 $12,765 $2,423 19.0%
43235 Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope Facility 2023 22 22 $31,313 $1,696 5.4%
45378 Diagnostic exam of large bowel using a flexible endoscope Facility 2023 13 13 $30,290 $1,545 5.1%
99213 Established patient office or other outpatient visit, 20-29 minutes Office 2023 18 21 $4,584 $1,421 31.0%
99214 Established patient office or other outpatient visit, 30-39 minutes Office 2023 14 14 $4,404 $933.65 21.2%
99232 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes Facility 2023 12 12 $3,324 $709.68 21.4%
45380 Biopsy of large bowel using a flexible endoscope Office 2022 126 127 $279,654 $13,098 4.7%
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare Office 2022 55 56 $154,000 $10,103 6.6%
45380 Biopsy of large bowel using a flexible endoscope Facility 2022 60 60 $127,906 $6,152 4.8%
45385 Removal of polyps or growths of large bowel using an endoscope with mechanical snare Facility 2022 24 24 $66,000 $4,548 6.9%
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope Facility 2022 45 46 $79,090 $3,661 4.6%
G0105 Colorectal cancer screening; colonoscopy on individual at high risk Office 2022 22 22 $45,025 $3,567 7.9%
43239 Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope Office 2022 47 49 $86,044 $3,254 3.8%
99213 Established patient office or other outpatient visit, 20-29 minutes Office 2022 27 31 $6,324 $1,812 28.6%
43255 Control of bleeding of esophagus, stomach, and/or upper small bowel using a flexible endoscope Facility 2022 11 11 $23,650 $1,535 6.5%
43235 Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope Facility 2022 18 18 $23,705 $1,367 5.8%
45378 Diagnostic exam of large bowel using a flexible endoscope Office 2022 11 11 $25,630 $1,261 4.9%

About Dr. John Williams, M.D

Dr. John Williams, M.D is a Gastroenterology healthcare provider based in Madison, Wisconsin. This provider has been registered with the National Plan and Provider Enumeration System (NPPES) since 10/24/2006. The National Provider Identifier (NPI) number assigned to this provider is 1265516421.

As a Medicare-enrolled provider, Williams has provided services to 1,768 Medicare beneficiaries, totaling 1,846 services with total Medicare billing of $192,929. Data is available for 4 years (2020–2023), covering 56 distinct procedure/service records.

Practice Information

  • Specialty Gastroenterology
  • Location Madison, WI
  • Active Since 10/24/2006
  • Last Updated 01/27/2021
  • Taxonomy Code 207RG0100X
  • Entity Type Individual
  • NPI Number 1265516421

Data Sources

Provider data from NPPES. Payment data from CMS Open Payments. Medicare data from CMS Medicare Provider Utilization. All data is public and updated periodically.

Gastroenterology Doctors in Madison