Mikko N. Sayre, MD

Medicare activity in 2024

Official CMS public-use data for Mikko N. Sayre, 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. Emergency department visit with high level of medical decision making (99285)98 services
2. Emergency department visit with moderate level of medical decision making (99284)50 services
3. Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)39 services
4. Critical care, first 30-74 minutes (99291)15 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 cholesterol69%
• Arthritis48%
• Anxiety46%
• Ischemic heart disease38%
• Depression33%

Hospitals where Mikko N. Sayre works

Medicare's Facility Affiliation Data lists Mikko N. Sayre 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.

• Watertown Memorial HospitalWatertown, WI · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 520116

Practice locations

Addresses where Mikko N. Sayre is enrolled with Medicare (CMS data updated October 2, 2026).

• 125 Hospital DrWatertown, WI 53098 (920) 261‑4210
• 5000 W Chambers StMilwaukee, WI 53210 (414) 447‑2000

Group practices

Medicare enrollment lists Mikko N. Sayre as a member of these groups (CMS data updated October 2, 2026).

• Emergency Medicine Specialists SC227 clinicians in the group
• Emergency Physician Associates of Wisconsin SC19 clinicians in the group

Specialties

• Emergency Medicineprimary

Find other Emergency Medicine doctors in Wisconsin →

Other emergency medicine doctors in Watertown

Clinicians with the same Medicare primary specialty in Watertown, WI — not a recommendation.

• Charles J. Havel Jr., MD
• Bryan K. Tepper, DO
• Lawrence Neuman, MD
• Skyler L. Rathkamp, MD
• Robert B. Allen, MD
• Lance Allen, DO
• Justin D. Kriezelman, MD
• Thomas W. Tully Jr., MD

All emergency medicine doctors in Watertown →

Other clinicians in Emergency Medicine Specialists SC

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

• Alice M. Held
• Terra L. Matthews, DO
• Manuel Hernandez, MD
• Beth J. Adams
• Caroline W. Butts
• Ashlee Q. Hanford-Longsine

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