Darren P. Corteen, MD

Medicare activity in 2024

Official CMS public-use data for Darren P. Corteen, 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. Aspiration and/or injection of fluid from large joint (20610)29 services
2. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)23 services
3. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)22 services
4. New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)18 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).

• Arthritis68%
• High blood pressure63%
• High cholesterol62%
• Anxiety37%
• Depression35%
• Diabetes25%

Hospitals where Darren P. Corteen works

Medicare's Facility Affiliation Data lists Darren P. Corteen 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.

• Marshfield Medical CenterMarshfield, WI · Acute Care Hospital · Medicare rating: 1 of 5 stars · Emergency services: listed by Medicare · CCN 520037

Practice locations

Addresses where Darren P. Corteen is enrolled with Medicare (CMS data updated October 2, 2026).

• 1000 N Oak AveMarshfield, WI 54449 (715) 387‑5511

Group practices

Medicare enrollment lists Darren P. Corteen as a member of this group (CMS data updated October 2, 2026).

• MCHS Hospitals Inc1,197 clinicians in the group

Specialties

• Orthopedic Surgeryprimary

Find other Orthopedic Surgery doctors in Wisconsin →

Other orthopedic surgeons in Marshfield

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

• Samarjit S. Jaglan, MD
• Tyler J. Dahl, MD
• David J. Polga, MD
• Nikhil Shelke, MD
• Natalia Rodriguez Luquerna, MD
• William D. McCormick, MD
• Tamira J. Miranowski, DO
• Rachel M. Randall, MD

All orthopedic surgeons in Marshfield →

Other clinicians in MCHS Hospitals Inc

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

• Neil Digiovanni, MD
• Nicole L. Schramm
• Angela M. Okon
• David Sabo, MD
• Khushboo N. Patel, MD
• Shameem S. Kunhammed, 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