Grant H. Shumaker, MD

Medicare activity in 2024

Official CMS public-use data for Grant H. Shumaker, 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 low level od decision making, if using time, 20 minutes or more (99213)130 services
2. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)77 services
3. X-ray of lower and sacral spine, 2-3 views (72100)68 services
4. New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)47 services
5. Fusion of additional segment of spine (22614)36 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%
• Arthritis72%
• Diabetes33%
• Anxiety33%
• Chronic kidney disease33%

Hospitals where Grant H. Shumaker works

Medicare's Facility Affiliation Data lists Grant H. Shumaker 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.

• Buena Vista Regional Medical CenterStorm Lake, IA · Critical Access Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 161375
• Dunes Surgical HospitalDakota Dunes, SD · Acute Care Hospital · Emergency services: not listed by Medicare · CCN 430089
• Floyd Valley HealthcareLe Mars, IA · Critical Access Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 161368
• Sioux Center HealthSioux Center, IA · Critical Access Hospital · Emergency services: listed by Medicare · CCN 161346
• St Lukes Regional Medical CenterSioux City, IA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 160146

Practice locations

Addresses where Grant H. Shumaker is enrolled with Medicare (CMS data updated October 2, 2026).

• 315 W 5th StStorm Lake, IA 50588 (712) 732‑7724
• 575 N Sioux Point RdDakota Dunes, SD 57049 (605) 217‑2667
• 801 5th StSioux City, IA 51101 (712) 279‑2010

Group practices

Medicare enrollment lists Grant H. Shumaker as a member of these groups (CMS data updated October 2, 2026).

• Sports Rehab and Professional Therapy Associates Inc132 clinicians in the group
• Cnos PC99 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.

• Luis D. Diaz-Aguilar, MD
• Rebecca A. Reynolds, MD
• Brian J. Dlouhy, MD
• Royce W. Woodroffe, MD
• Matthew L. Miller, MD
• Landon D. Ehlers, MD
• Patrick W. Hitchon, MD
• Steven R. Schopick, MD

All neurosurgeons in Iowa →

Other clinicians in Sports Rehab and Professional Therapy Associates Inc

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

• Daniel R. Nelson, MD
• John R. Greaves, DPM
• Katie M. Lindgren
• David A. Welch, PA
• Richard B. Goding, MD
• John E. Hilsabeck, 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