Maciej Z. Klosowski

Medicare activity in 2024

Official CMS public-use data for Maciej Z. Klosowski, 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. Anesthesia for exam of colon using an endoscope (00812)144 services
2. Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)61 services
3. Anesthesia for procedure on small and large bowel using an endoscope (00813)46 services
4. Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve) (64447)42 services
5. Anesthesia for procedure for total knee joint replacement (01402)35 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%
• Arthritis56%
• Ischemic heart disease37%
• Diabetes29%
• Anxiety27%

Hospitals where Maciej Z. Klosowski works

Medicare's Facility Affiliation Data lists Maciej Z. Klosowski 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.

• Beebe Medical CenterLewes, DE · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 080007

Practice locations

Addresses where Maciej Z. Klosowski is enrolled with Medicare (CMS data updated October 2, 2026).

• 18941 John J Williams Hwy, Southern Delaware Surgery CenterRehoboth Beach, DE 19971 (302) 644‑6992
• 19161 Healthy WayRehoboth Beach, DE 19971 (302) 645‑3300
• 424 Savannah RdLewes, DE 19958 (302) 441‑1078
• 424 Savannah Rd, Dept of AnesthesiaLewes, DE 19958

Group practices

Medicare enrollment lists Maciej Z. Klosowski as a member of this group (CMS data updated October 2, 2026).

• Delaware Anesthesia Associates PA33 clinicians in the group

Specialties

• Anesthesiologyprimary

Find other Anesthesiology doctors in Delaware →

Other anesthesiologists in Rehoboth Beach

Clinicians with the same Medicare primary specialty in Rehoboth Beach, DE — not a recommendation.

• Michael S. Ingerski, MD
• Stephen M. Fanto, MD
• Tak C. Liu, MD
• Robert W. Wiltshire, MD

All anesthesiologists in Rehoboth Beach →

Other clinicians in Delaware Anesthesia Associates PA

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

• Melanie L. McAfee, CNA
• Douglas S. Crate, MD
• Paula J. Goodman, CNA
• Mark G. Mulvihill, MD
• Casey T. Savage, DO
• Tak C. Liu, 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