John P. Czarnecki, MD

Medicare activity in 2024

Official CMS public-use data for John P. Czarnecki, 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. Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)68 services
2. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)67 services
3. Biopsy of large bowel using a flexible endoscope (45380)45 services
4. Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)37 services
5. Colorectal cancer screening; colonoscopy on individual at high risk (G0105)37 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%
• Arthritis52%
• Ischemic heart disease29%
• Diabetes27%
• Chronic kidney disease24%

Hospitals where John P. Czarnecki works

Medicare's Facility Affiliation Data lists John P. Czarnecki 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.

• Adena Regional Medical CenterChillicothe, OH · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 360159
• Porter Hospital IncMiddlebury, VT · Critical Access Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 471307

Practice locations

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

• 272 Hospital Rd, Suite 225Chillicothe, OH 45601 (740) 779‑8530
• 2835 N Sheffield Ave, Suite 303Chicago, IL 60657 (773) 368‑3164
• 836 W Wellington AveChicago, IL 60657 (773) 975‑1600

Group practices

Medicare enrollment lists John P. Czarnecki as a member of these groups (CMS data updated October 2, 2026).

• Adena Medical Group LLC386 clinicians in the group
• Chicago Gastro LLC5 clinicians in the group

Specialties

• Gastroenterologyprimary

Find other Gastroenterology doctors in Ohio →

Other gastroenterologists in Chillicothe

Clinicians with the same Medicare primary specialty in Chillicothe, OH — not a recommendation.

• Waheed Gul, MD
• Talal Seoud, MD
• Niaz Usman, MD
• Syed A. Ali, MD
• John Smith, MD
• Chathur Acharya

All gastroenterologists in Chillicothe →

Other clinicians in Adena Medical Group LLC

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

• James A. Lower, CNA
• Jarrod Betz, MD
• Sabrina D. Greer, AU
• Serena J. Miller
• Daniel Ricketti, MD
• Mishel Simoni, 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