Marcio A. Shiokawa, MD

Medicare activity in 2024

Official CMS public-use data for Marcio A. Shiokawa, 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. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)242 services
2. Hospital discharge day management, more than 30 minutes (99239)97 services
3. Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)88 services
4. Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)79 services
5. Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes (99231)23 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%
• Chronic kidney disease52%
• Heart failure50%
• Diabetes47%
• Ischemic heart disease46%

Hospitals where Marcio A. Shiokawa works

Medicare's Facility Affiliation Data lists Marcio A. Shiokawa 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.

• SSM Health St Agnes Hospital-Fond Du LacFond Du Lac, WI · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 520088
• Waupun Memorial HospitalWaupun, WI · Critical Access Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 521327

Practice locations

Addresses where Marcio A. Shiokawa is enrolled with Medicare (CMS data updated October 2, 2026).

• 430 E Division StFond Du Lac, WI 54935 (920) 929‑2300

Group practices

Medicare enrollment lists Marcio A. Shiokawa as a member of this group (CMS data updated October 2, 2026).

• Agnesian Healthcare Inc388 clinicians in the group

Specialties

• Hospitalistprimary
• Internal Medicinealso

Find other Hospitalist doctors in Wisconsin →

Other hospitalists in Fond Du Lac

Clinicians with the same Medicare primary specialty in Fond Du Lac, WI — not a recommendation.

• Amena Nazeer, MD
• Nydia C. Ros, MD
• Riyazuddin S. Mogalai, MD
• Anjeanette Mendez, MD
• Misty L. Johnson, MD
• Galina S. Petrinska, MD
• Kasra A. Milani, MD
• Desirae M. Budi, DO

All hospitalists in Fond Du Lac →

Other clinicians in Agnesian Healthcare Inc

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

• Ashvin R. Sood, MD
• Edward A. Wright, DO
• Alexis L. Moore
• Steven A. Magoline, MD
• Cheryl R. Tapp, MD
• Maxwell J. Machurick, 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