Darren L. Croo, MD

Medicare activity in 2024

Official CMS public-use data for Darren L. Croo, 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. Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)52 services
2. Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)47 services
3. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)43 services
4. Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk (G0121)38 services
5. Biopsy of large bowel using a flexible endoscope (45380)37 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%
• Chronic kidney disease38%
• Diabetes34%
• Ischemic heart disease30%

Hospitals where Darren L. Croo works

Medicare's Facility Affiliation Data lists Darren L. Croo 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.

• Humboldt County Memorial HospitalHumboldt, IA · Critical Access Hospital · Emergency services: listed by Medicare · CCN 161334
• Loring HospitalSac City, IA · Critical Access Hospital · Emergency services: listed by Medicare · CCN 161370
• Trinity Regional Medical CenterFort Dodge, IA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 160016

Practice locations

Addresses where Darren L. Croo is enrolled with Medicare (CMS data updated October 2, 2026).

• 800 Kenyon RdFort Dodge, IA 50501
• 804 Kenyon Rd, Suite GFort Dodge, IA 50501 (515) 573‑4141

Group practices

Medicare enrollment lists Darren L. Croo as a member of these groups (CMS data updated October 2, 2026).

• Iowa Physicians Clinic Medical Foundation1,246 clinicians in the group
• Trinity Regional Medical Center167 clinicians in the group

Specialties

• General Surgeryprimary

Find other General Surgery doctors in Iowa →

Other general surgeons in Iowa

Clinicians with the same Medicare primary specialty in Iowa — not a recommendation.

• Alan I. Reed, MD
• David S. Kermode, DO
• Daniel A. Mansfield, MD
• Mark Williams, MD
• Juan Arenas, MD
• Daniel R. Kollmorgen, MD
• Leon M. Siegel, MD
• Mihir Chaudhary, MD

All general surgeons in Iowa →

Other clinicians in Iowa Physicians Clinic Medical Foundation

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

• Rafael Serrano Riera, MD
• Lynn B. Geick, MD
• Kirsten J. Johnson
• Brittany N. Courson
• Tricia McDermott
• Angela W. Hubanks

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