Dr. John Byron Williams, MD

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

• Unitypoint Health - Meriter Hospital · Madison, WI · listed as Unity Point Health - Meriter
• University Of Wi Hospitals & Clinics Authority Hospital · Madison, WI · listed as University of Wisconsin Hospitals and Clinics Authority

Colleagues at University of Wisconsin Medical Foundation Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 2536 clinicians in the practice; 12 are shown here.

• Dr. Majid Afshar, MD Pulmonary Disease Physician · Madison, WI
• Catherine Cooch Allen, MD Pediatric Cardiology Physician · Madison, WI
• Jon A Arnason, MD Rheumatology Physician · Madison, WI
• Sarah B. Hittner, PA Surgical Physician Assistant · Madison, WI
• Dr. Elizabeth L Lake, MD Neurology Physician · Madison, WI
• Elizabeth Nielsen, PA-C Physician Assistant · Madison, WI
• Emily Peterson, MD Student in an Organized Health Care Education/Training Program · Beaver Dam, WI
• Daniel L Rosenberg, MD Allergy & Immunology Physician · Madison, WI
• Molly A Sanders, LCPC, LPC Professional Counselor · Madison, WI
• Anthony V Serritella, MD Internal Medicine Physician · Madison, WI
• Dr. David Tillman, MD Emergency Medicine Physician · Madison, WI
• Jennifer A. Turk, NP Nurse Practitioner · Madison, WI

Other providers in Madison

• Gabrielle E Waclawik, MD

  Individual Gastroenterology Physician · NPI 1538622543

  4621 Eastpark Blvd, Madison, WI 53718-2000 · (608) 916-0400

• Dr. Arnold Wald, MD

  Individual Gastroenterology Physician · NPI 1063488419

  451 Junction Rd, Madison, WI 53717 · (608) 263-8094

• Mr. Andrew Joseph Walker, MD

  Individual Gastroenterology Physician · NPI 1649482605

  700 S Park St Ste A, Madison, WI 53715-1830 · (608) 260-2900

• Naree K Whang, MD

  Individual Gastroenterology Physician · NPI 1205060613

  700 S Park St Ste A, Madison, WI 53715-1830 · (608) 260-2900