Charles N. Heggen, MD

Medicare activity in 2024

Official CMS public-use data for Charles N. Heggen, 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. X-ray of chest, 2 views (71046)290 services
2. Screening mammography (77067)256 services
3. Screening 3d breast mammography (77063)255 services
4. Dxa bone density measurement of hip, pelvis, spine (77080)232 services
5. X-ray of knee, 3 views (73562)114 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 cholesterol75%
• High blood pressure74%
• Arthritis53%
• Chronic kidney disease31%
• Diabetes29%
• Ischemic heart disease29%

Hospitals where Charles N. Heggen works

Medicare's Facility Affiliation Data lists Charles N. Heggen 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
• Community Memorial Hospital Medical CenterSumner, IA · Critical Access Hospital · Emergency services: listed by Medicare · CCN 161320
• Grundy County Memorial HospitalGrundy Center, IA · Critical Access Hospital · Emergency services: listed by Medicare · CCN 161303
• MercyOne Waterloo Medical CenterWaterloo, IA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 160067
• UnityPoint Health - MarshalltownMarshalltown, IA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 160001

Practice locations

Addresses where Charles N. Heggen is enrolled with Medicare (CMS data updated October 2, 2026).

• 1825 Logan AveWaterloo, IA 50703 (319) 235‑3941

Group practices

Medicare enrollment lists Charles N. Heggen as a member of this group (CMS data updated October 2, 2026).

• Allen Memorial Hospital Corporation157 clinicians in the group

Specialties

• Diagnostic Radiologyprimary

Find other Diagnostic Radiology doctors in Iowa →

Other radiologists in Waterloo

Clinicians with the same Medicare primary specialty in Waterloo, IA — not a recommendation.

• Kirby P. Clark, MD
• Roberto A. Salas Fragomeni, MD
• Robert Filippone, DO
• Umair Munawar
• Rajeev Anugu, MD
• Roxana F. Leinbach, MD
• Gopi K. Kota, MD

All radiologists in Waterloo →

Other clinicians in Allen Memorial Hospital Corporation

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

• Teresa A. Hanson
• Kristen L. Larter
• Katie R. Baker, DO
• Sarah A. Hemming-Meyer, DO
• Mattie J. Testroet
• Andrea L. Youngblut

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