Dr. Zachary Mathias Napier, 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.

• Ascension St Vincent Hospital Hospital · Indianapolis, IN · listed as St Vincent Hospital
• Franciscan Health Crawfordsville Hospital · Crawfordsville, IN
• Franciscan Health Indianapolis Hospital · Indianapolis, IN
• Franciscan Health Lafayette Hospital · Lafayette, IN
• Franciscan Health Orthopedic Hospital Carmel Hospital · Carmel, IN · listed as Franciscan Health-Carmel

Colleagues at Indiana Spine Group, PC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 50 clinicians in the practice; 12 are shown here.

• John W. Arbuckle, MD Pain Medicine Physician · Carmel, IN
• Dr. Barrett Steven Boody, MD Orthopaedic Surgery of the Spine Physician · Carmel, IN
• John Berkley Chambers, MD Orthopaedic Surgery of the Spine Physician · Columbus, IN
• Carole E Floyd, NP-C Nurse Practitioner · Carmel, IN
• Joseph Timothy Hare, MD Orthopaedic Surgery Physician · Carmel, IN
• Dr. Ali Hassan Jawad, MD Orthopaedic Surgery Physician · Farmington Hills, MI
• Lori R Kiefer, MD Pain Medicine (Anesthesiology) Physician · Indianapolis, IN
• Daniel L Kim, MD Neurological Surgery Physician · Carmel, IN
• Kevin E. Macadaeg, MD Pain Medicine Physician · Carmel, IN
• Michael H McCarthy, MD Orthopaedic Surgery Physician · Carmel, IN
• Peter R Swiatek, MD Orthopaedic Surgery Physician · Carmel, IN
• Dr. Jose Castillo Vitto, MD Pain Medicine (Anesthesiology) Physician · Carmel, IN

Other providers in Carmel

• Robert A Malinzak, MD

  Individual Orthopaedic Surgery Physician · NPI 1942286828

  10875 Onyx Dr, Carmel, IN 46032-9496 · (317) 831-2273

• Joseph Dominic Maratt, MD

  Individual Orthopaedic Surgery Physician · NPI 1093980179

  10767 Illinois St Ste 3000, Carmel, IN 46032-8972 · (317) 817-1200

• Michael H McCarthy, MD

  Individual Orthopaedic Surgery Physician · NPI 1942628730

  13225 N Meridian St, Carmel, IN 46032-5480 · (317) 228-7000

• Meridian Orthopedics, PC

  Organization Orthopaedic Surgery Physician · NPI 1194780296

  11911 N Meridian St Ste 120, Carmel, IN 46032-6904 · (317) 621-6760

• New Hope Orthopaedics and Sports Medicine

  Organization Orthopaedic Surgery Physician · NPI 1255521274

  13400 N Meridian St Ste 290, Carmel, IN 46032-7122 · (317) 815-1700

• New Hope Orthopaedics and Sports Medicine PC

  Organization Orthopaedic Surgery Physician · NPI 1457551095

  13421 Old Meridian St Ste 202, Carmel, IN 46032-1427 · (317) 815-1700

• Orthopaedics Indianapolis, PC

  Organization Orthopaedic Surgery Physician · NPI 1275720088

  11700 N Meridian St, Carmel, IN 46032-4656 · (317) 688-2647

• Orthopaedics-Indianapolis, Inc

  Organization Orthopaedic Surgery Physician · NPI 1518059815

  13450 N Meridian St Ste 355, Carmel, IN 46032-1486 · (317) 575-2700