Troy R. Karlsson, MD

Medicare activity in 2024

Official CMS public-use data for Troy R. Karlsson, 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)4,500 services
2. Hyaluronan or derivative, durolane, for intra-articular injection, 1 mg (J7318)3,420 services
3. Aspiration and/or injection of fluid from large joint (20610)489 services
4. Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)459 services
5. X-ray of knee, 4 or more views (73564)227 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 cholesterol75%
• Arthritis75%
• High blood pressure74%
• Ischemic heart disease28%
• Diabetes25%
• Anxiety22%

Hospitals where Troy R. Karlsson works

Medicare's Facility Affiliation Data lists Troy R. Karlsson 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.

• Edward HospitalNaperville, IL · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 140231

Practice locations

Addresses where Troy R. Karlsson is enrolled with Medicare (CMS data updated October 2, 2026).

• 1259 Rickert Dr, Suite 101Naperville, IL 60540 (630) 355‑1300

Group practices

Medicare enrollment lists Troy R. Karlsson as a member of this group (CMS data updated October 2, 2026).

• Dupage Medical Group Ltd1,322 clinicians in the group

Specialties

• Orthopedic Surgeryprimary

Find other Orthopedic Surgery doctors in Illinois →

Other orthopedic surgeons in Naperville

Clinicians with the same Medicare primary specialty in Naperville, IL — not a recommendation.

• John L. Reilly, MD
• Andrew H. Kim, MD
• Brian A. Murphy, MD
• John Lombardi, MD
• Anthony S. Rinella, MD
• David C. Alfieri, MD
• Justin Kyhos, MD
• John Moon

All orthopedic surgeons in Naperville →

Other clinicians in Dupage Medical Group Ltd

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

• Ainah Tan, MD
• Sarat C. Munukutla, MD
• William R. Sheehan
• Daniel J. Frank, MD
• Pruthvi J. Sharlin, MD
• Ali Imtiaz, DO

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