Susan M. Duffy, MD

Medicare activity in 2024

Official CMS public-use data for Susan M. Duffy, 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. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)159 services
2. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)20 services
3. Psychiatric diagnostic evaluation with medical services (90792)12 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).

• Anxiety75%
• Depression69%
• High blood pressure60%
• High cholesterol59%
• Arthritis31%
• Diabetes27%

Hospitals where Susan M. Duffy works

Medicare's Facility Affiliation Data lists Susan M. Duffy 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.

• University of Iowa Hospital & ClinicsIowa City, IA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 160058
• Van Buren County HospitalKeosauqua, IA · Critical Access Hospital · Emergency services: listed by Medicare · CCN 161337

Practice locations

Addresses where Susan M. Duffy is enrolled with Medicare (CMS data updated October 2, 2026).

• 200 Hawkins DrIowa City, IA 52242

Group practices

Medicare enrollment lists Susan M. Duffy as a member of this group (CMS data updated October 2, 2026).

• State University of Iowa1,897 clinicians in the group

Specialties

• Psychiatryprimary

Find other Psychiatry doctors in Iowa →

Other psychiatrists in Iowa City

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

• James Y. Min, MD
• Carly J. Van Der Heide, MD
• Omar Elmarasi
• Kathryn E. Wrobel, MD
• Jodi T. Tate, MD
• Vicki J. Kijewski, MD
• Nicholas T. Trapp, MD
• Alexander W. Thompson, MD

All psychiatrists in Iowa City →

Other clinicians in State University of Iowa

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

• Philip Chen, MD
• Jonathan Jaksha, MD
• Aaron C. Smith, DO
• Shayna K. Piersma
• John W. Hellstein, DDS
• Philip M. Polgreen, 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