Zachary Treat, MD

Medicare activity in 2024

Official CMS public-use data for Zachary Treat, 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. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)351 services
2. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)170 services
3. Hospital discharge day management, more than 30 minutes (99239)159 services
4. Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)84 services
5. Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)26 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%
• Arthritis52%
• Ischemic heart disease52%
• Heart failure49%
• Chronic kidney disease47%

Hospitals where Zachary Treat works

Medicare's Facility Affiliation Data lists Zachary Treat 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.

• Allen HospitalWaterloo, IA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 160110
• Mercy Hospital SouthSaint Louis, MO · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 260077

Practice locations

Addresses where Zachary Treat is enrolled with Medicare (CMS data updated October 2, 2026).

• 10010 Kennerly RdSaint Louis, MO 63128 (314) 525‑1328
• 1825 Logan AveWaterloo, IA 50703
• 4480 Utica Ridge RdBettendorf, IA 52722

Group practices

Medicare enrollment lists Zachary Treat as a member of these groups (CMS data updated October 2, 2026).

• Iowa Physicians Clinic Medical Foundation1,246 clinicians in the group
• St Anthonys Physician Organization Hospitalist Services LC144 clinicians in the group

Specialties

• Family Practiceprimary

Find other Family Practice doctors in Missouri →

Other family doctors in Saint Louis

Clinicians with the same Medicare primary specialty in Saint Louis, MO — not a recommendation.

• Paul G. Rutledge, MD
• Matthew A. Breeden, MD
• Alexa Arastoo, DO
• Muhaddis E. Ahmad, MD
• James Starrett, DO
• Mary E. Fox, MD
• Gena L. Napier, MD
• Hannah W. Yasin, MD

All family doctors in Saint Louis →

Other clinicians in Iowa Physicians Clinic Medical Foundation

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

• Brady W. Hunt
• Kyle J. Grover
• Qadnana A. Anwar, MD
• Melissa M. Peyton, PA
• Nicholas J. Mancuso, MD
• Jeffrey S. Walczyk, 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