Matthew A. Zarka, MD

Medicare activity in 2024

Official CMS public-use data for Matthew A. Zarka, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Most frequent services

1. Pathology examination of tissue using a microscope, intermediate complexity (88305)681 services
2. Special stained specimen slides to examine tissue, each additional procedure (88341)385 services
3. Cell examination of specimen, selective cellular enhancement technique (88112)234 services
4. Evaluation of fine needle aspirate with interpretation and report (88173)227 services
5. Pathology examination of specimen during surgery, each additional tissue block (88332)190 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

• High blood pressure75%
• High cholesterol75%
• Arthritis50%
• Ischemic heart disease33%
• Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)33%
• Chronic kidney disease32%

Hospitals where Matthew A. Zarka works

Medicare's Facility Affiliation Data lists Matthew A. Zarka at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

• Mayo Clinic HospitalPhoenix, AZ · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 030103

Practice locations

Addresses where Matthew A. Zarka is enrolled with Medicare (CMS data updated October 2, 2026).

• 13400 E Shea BlvdScottsdale, AZ 85259 (480) 301‑8000

Group practices

Medicare enrollment lists Matthew A. Zarka as a member of this group (CMS data updated October 2, 2026).

• Mayo Clinic Arizona1,626 clinicians in the group

Specialties

• Pathologyprimary

Find other Pathology doctors in Arizona →

Other pathologists in Scottsdale

Clinicians with the same Medicare primary specialty in Scottsdale, AZ — not a recommendation.

• Katalin Kelemen, MD
• Margaret Ryan, MD
• Florencia Anatelli, MD
• Kelsey E. McHugh, MD
• Idris T. Ocal, MD
• Ann E. McCullough, MD
• Anand Padmanabhan, MD
• Dora M. Lam-Himlin, MD

All pathologists in Scottsdale →

Other clinicians in Mayo Clinic Arizona

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

• Lynda S. Facchiano, NP
• Laura E. Klusovsky, PA
• Amy Hara, MD
• Megan Wienecke, PA
• Shayne Wood, CNA
• Kayla R. Mirie, MD

Clinician information

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
6. Medicare Care Compare — official Medicare tool to look up clinicians