Rafael Walker Santiago, MD

Medicare activity in 2024

Official CMS public-use data for Rafael Walker Santiago, 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. Injection, triamcinolone acetonide, not otherwise specified, 10 mg (J3301)200 services
2. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)138 services
3. New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)57 services
4. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)53 services
5. Aspiration and/or injection of fluid from large joint (20610)41 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%
• Depression31%
• Chronic kidney disease29%
• Anxiety27%

Hospitals where Rafael Walker Santiago works

Medicare's Facility Affiliation Data lists Rafael Walker Santiago 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.

• Aurora Medical CenterGrafton, WI · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 520207
• Aurora Medical Center - SummitSummit, WI · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 520206
• Aurora Medical Center Washington CountyHartford, WI · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 520038
• Aurora St Lukes Medical CenterMilwaukee, WI · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 520138
• West Allis Memorial HospitalWest Allis, WI · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 520139

Practice locations

Addresses where Rafael Walker Santiago is enrolled with Medicare (CMS data updated October 2, 2026).

• 975 Port Washington Rd, Suite 320Grafton, WI 53024 (262) 329‑8100

Group practices

Medicare enrollment lists Rafael Walker Santiago as a member of this group (CMS data updated October 2, 2026).

• Aurora Advanced Healthcare, Inc.1,124 clinicians in the group

Specialties

• Orthopedic Surgeryprimary

Find other Orthopedic Surgery doctors in Wisconsin →

Other orthopedic surgeons in Wisconsin

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

• Stephen M. Kurtin, MD
• David Bingham, DO
• Haley E. Smith, MD
• Ronald P. Guiao, MD
• John T. Awowale, MD
• Jonathan C. Henry, MD
• Jonathon O. Printz, MD
• Dustin J. Richter, MD

All orthopedic surgeons in Wisconsin →

Other clinicians in Aurora Advanced Healthcare, Inc.

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

• James F. Ginter, PA
• Syed A. Hassan, MD
• Prashant K. Nageshwar, MD
• Maria Georgen, MD
• Reid C. Bowers, PA
• Rebecca J. Rings-Miller, 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