Dr. Matthew Ryan Walker, 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.

• Columbus Regional Hospital Hospital · Columbus, IN
• Community Hospital South, Inc. Hospital · Indianapolis, IN · listed as Community Hospital South, Inc
• Hendricks Regional Health Hospital · Danville, IN
• Indiana University Health Hospital · Indianapolis, IN
• Orthoindy Hospital Hospital · Indianapolis, IN

Colleagues at Orthopaedics-Indianapolis Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 353 clinicians in the practice; 12 are shown here.

• Alyssa M Burkhart, NP Nurse Practitioner · Greenwood, IN
• John Ullman Dustin, MD Family Medicine Physician · Indianapolis, IN
• Dr. Erica Elizabeth Fisk, MD Orthopaedic Surgery Physician · Fishers, IN
• Sara K Ford-Terry, FNP-C Nurse Practitioner · Fort Wayne, IN
• Miss. Denise Joan Harty, PA-C Physician Assistant · Indianapolis, IN
• MS. Chelsey Amber Hayden, PA Registered Nurse · Indianapolis, IN
• Dr. Joseph R Lafnitzegger, MD Anesthesiology Physician · Indianapolis, IN
• Grant Randall Phillips, DPT Physical Therapist · Evansville, IN
• Dr. Paul Edward Rodenhouse, DO Sports Medicine (Orthopaedic Surgery) Physician · Lafayette, IN
• Mr. Jason David Roth, PA Physician Assistant · Indianapolis, IN
• Erica Snyder, PA-C Physician Assistant · Fort Wayne, IN
• Mary Kathleen Warner Physician Assistant · Fort Wayne, IN

Other providers in Greenwood

• Orthopaedics-Indianapolis, Inc

  Organization Orthopaedic Surgery Physician · NPI 1457443764

  1260 Innovation Pkwy Ste 100, Greenwood, IN 46143-3601 · (317) 884-5200

• Orthopaedics-Indianapolis, Inc

  Organization Orthopaedic Surgery Physician · NPI 1609417260

  1579 Olive Branch Parke Ln Ste 130, Greenwood, IN 46143 · (317) 884-5111

• Ryan Pattyn, MD

  Individual Orthopaedic Surgery Physician · NPI 1255950564

  1401 W County Line Rd, Greenwood, IN 46142-5195 · (317) 817-1200

• Gregory James Slabaugh, MD

  Individual Orthopaedic Surgery Physician · NPI 1417218751

  1401 W County Line Rd, Greenwood, IN 46142-5195 · (317) 817-1200

• Dr. Hiram Jeffery Whitaker, MD

  Individual Orthopaedic Surgery Physician · NPI 1245285055

  1260 Innovation Pkwy #100, Greenwood, IN 46143-3601 · (317) 884-5200

• Thomas S Woo, MD

  Individual Orthopaedic Surgery Physician · NPI 1215980834

  1260 Innovation Pkwy #100, Greenwood, IN 46143-3602 · (317) 884-5200