Joseph P. Merck, MD

Medicare activity in 2024

Official CMS public-use data for Joseph P. Merck, 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 complete exam of visual system (92014)231 services
2. Imaging of retina (92134)219 services
3. Removal of cataract with insertion of prosthetic lens (66984)208 services
4. Measurement of corneal curvature and depth of eye (92136)196 services
5. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)186 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 pressure71%
• High cholesterol68%
• Arthritis45%
• Ischemic heart disease25%
• Diabetes23%
• Anxiety19%

Hospitals where Joseph P. Merck works

Medicare's Facility Affiliation Data lists Joseph P. Merck 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.

• Cuyuna Regional Medical CenterCrosby, MN · Critical Access Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 241353
• Essentia Health Deer RiverDeer River, MN · Critical Access Hospital · Emergency services: listed by Medicare · CCN 241360
• Riverwood Healthcare CenterAitkin, MN · Critical Access Hospital · Emergency services: listed by Medicare · CCN 241305

Practice locations

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

• 1 3rd Ave NECrosby, MN 56441 (218) 546‑5108

Group practices

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

• S Sjoberg PLC7 clinicians in the group

Specialties

• Ophthalmologyprimary

Find other Ophthalmology doctors in Minnesota →

Other ophthalmologists in Minnesota

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

• Adam D. Ahlquist, MD
• Stacy A. Sjoberg, MD
• Adam Gess, MD
• Huda Sheheitli, MD
• Steven M. Rakes, MD
• Daniel S. Conrad, MD
• Christopher D. Stefonowicz, MD
• George Jiao, MD

All ophthalmologists in Minnesota →

Other clinicians in S Sjoberg PLC

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

• Adam D. Ahlquist, MD
• Stacy A. Sjoberg, MD
• Cassie S. Mairs Knipple, OD
• Matthew T. Wiedell, OD
• Mary M. Zeise, OD
• Torvin B. Rajala

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