Dr. William Alfred Slater Jr., 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.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

• Lakeland Hospital, St Joseph Hospital · St Joseph, MI · listed as Lakeland Hospital at Niles and St Joseph, Inc
• Spectrum Health Hospital · Grand Rapids, MI · listed as Spectrum Health Hospital
• Spectrum Health United Hospital Hospital · Greenville, MI · listed as Spectrum Health Hospital
• Corewell Health Big Rapids Hospital Hospital · Big Rapids, MI
• Corewell Health Ludington Hospital Hospital · Ludington, MI

Colleagues at Advanced Radiology Services PC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 252 clinicians in the practice; 12 are shown here.

• Dr. Douglas William Byerly, MD, PHD Diagnostic Radiology Physician · Jbsa Lackland, TX
• Darin Gurizzian, DO Diagnostic Radiology Physician · Ludington, MI
• Dr. Bradley Kranendonk, MD Diagnostic Radiology Physician · Grand Rapids, MI
• Dr. Carlo R. Lazzaro, MD Diagnostic Radiology Physician · Roseville, MN
• Daniel H Macek, MD Diagnostic Radiology Physician · Warren, MI
• Chirag Patel, MD Diagnostic Radiology Physician · Grand Rapids, MI
• Lucas Michael Sheldon, MD Diagnostic Radiology Physician · Grand Rapids, MI
• Harkiran Kaur Singh, MD Diagnostic Radiology Physician · Grand Rapids, MI
• Dr. Jeffrey S Vanerp, MD Diagnostic Radiology Physician · Grand Rapids, MI
• Chandler G Veenhuis, DO Diagnostic Radiology Physician · Grand Rapids, MI
• Dr. Lisa Marie Walker, MD Diagnostic Radiology Physician · Detroit, MI
• Amy Warpinski, DO Diagnostic Radiology Physician · Grand Rapids, MI

Other providers in Grand Rapids

• Michael John Mills, MD

  Individual Vascular & Interventional Radiology Physician · NPI 1073743647

  3264 N Evergreen Dr NE, Grand Rapids, MI 49525-9746 · (616) 363-7272

• Dr. James Jason Morrison, MD

  Individual Vascular & Interventional Radiology Physician · NPI 1912165747

  3264 N Evergreen Dr NE, Grand Rapids, MI 49525-9746 · (616) 363-7339

• Kristin M Nelsen, MD

  Individual Vascular & Interventional Radiology Physician · NPI 1194796102

  3264 N Evergreen Dr NE, Grand Rapids, MI 49525 · (616) 363-7272

• Dr. Collin Mark Schultz, DO

  Individual Vascular & Interventional Radiology Physician · NPI 1801316096

  3246 N Evergreen Dr NE, Grand Rapids, MI 49525 · (616) 459-7225

• Dr. Kyle Mark Sonnabend, DO

  Individual Vascular & Interventional Radiology Physician · NPI 1932639754

  3264 N Evergreen Dr NE, Grand Rapids, MI 49525-9746 · (616) 363-7272

• Dr. Joel Thomas Vander Lugt, MD

  Individual Vascular & Interventional Radiology Physician · NPI 1578723482

  3264 N Evergreen Dr NE, Grand Rapids, MI 49525-9746 · (616) 363-7272

• Zachary Thomas Vandeveer, MD

  Individual Vascular & Interventional Radiology Physician · NPI 1144915232

  100 Michigan St NE Ste A601, Grand Rapids, MI 49503-2560 · (616) 391-6243