Catherine Miller-Simington, MD

Medicare activity in 2024

Official CMS public-use data for Catherine Miller-Simington, 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. Prolonged office or other outpatient evaluation and management service(s) beyond the maximum required time of the primary procedure which has been selected using total time on the date of the primary service; each additional 15 minutes by the physician or (G2212)199 services
2. Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)91 services
3. Partial removal of spine bone with release of spinal cord and/or nerves, each additional segment (63048)36 services
4. Partial removal of spine bone with release of lower spinal cord and/or nerves, 1 segment (63047)18 services
5. Insertion of cage or mesh device to spine bone and disc space during spine fusion (22853)13 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%
• Arthritis75%
• Diabetes34%
• Depression34%
• Anxiety31%

Hospitals where Catherine Miller-Simington works

Medicare's Facility Affiliation Data lists Catherine Miller-Simington 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.

• Finley HospitalDubuque, IA · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 160117

Practice locations

Addresses where Catherine Miller-Simington is enrolled with Medicare (CMS data updated October 2, 2026).

• 1500 Delhi St, Suite 4300Dubuque, IA 52001 (563) 557‑5971
• 350 N Grandview AveDubuque, IA 52001

Group practices

Medicare enrollment lists Catherine Miller-Simington as a member of this group (CMS data updated October 2, 2026).

• The Finley Hospital84 clinicians in the group

Specialties

• Neurosurgeryprimary

Find other Neurosurgery doctors in Iowa →

Other neurosurgeons in Iowa

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

• Darin W. Smith, MD
• Sandeep S. Bhangoo, MD
• Keith R. Lodhia, MD
• Prabin Shrestha
• Timothy R. Woodiwiss
• Rebecca A. Reynolds, MD
• Jeremy D. Greenlee, MD
• Matthew A. Howard, MD

All neurosurgeons in Iowa →

Other clinicians in The Finley Hospital

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

• Michael D. McKenna, MD
• Timothy W. Martin, MD
• Maurice Udechukwu, MD
• Kaylyn Bloyer
• Kristina M. Adkins, MD
• Jessica Steger

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