Quick answers
- Does Mark J. Kowalcyk accept Medicare assignment?
- Medicare's clinician data says Mark J. Kowalcyk may accept Medicare assignment (as of October 2, 2026). Ask the office whether they accept it for your visit.
- How many Medicare patients does Mark J. Kowalcyk see?
- In 2024, CMS data shows 99 Original Medicare patients and 101 services for Mark J. Kowalcyk. This counts Original Medicare only and measures volume, not quality.
- What is Mark J. Kowalcyk's NPI number?
- 1427598119. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Mark J. Kowalcyk, 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.
| Original Medicare patients | 99 |
|---|---|
| Services billed to Medicare | 101 |
| Different services or procedures | 26 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Anesthesia for lens surgery (00142)36 services
- Anesthesia for other procedure on large bowel using an endoscope (00811)14 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%
- Diabetes30%
- Ischemic heart disease28%
- Atrial fibrillation24%
Hospitals where Mark J. Kowalcyk works
Medicare's Facility Affiliation Data lists Mark J. Kowalcyk 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.
- Jupiter Medical CenterJupiter, FL · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 100253
- Wellstar North Fulton Medical CenterRoswell, GA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: not listed by Medicare · CCN 110198
Practice locations
Addresses where Mark J. Kowalcyk is enrolled with Medicare (CMS data updated October 2, 2026).
- 1210 S Old Dixie HwyJupiter, FL 33458 (954) 939‑5000
- 3000 Hospital BlvdRoswell, GA 30076 (770) 751‑2500
- 3950 Austell RdAustell, GA 30106 (770) 702‑1806
Group practices
Medicare enrollment lists Mark J. Kowalcyk as a member of these groups (CMS data updated October 2, 2026).
- Mak Anesthesia Holdings, LLC385 clinicians in the group
- Jupiter Anesthesia Associates LLC96 clinicians in the group
Specialties
Find other clinicians: Certified Registered Nurse Anesthetist (CRNA), Florida →
Other nurse anesthetists in Jupiter
Clinicians with the same Medicare primary specialty in Jupiter, FL — not a recommendation.
Other clinicians in Mak Anesthesia Holdings, LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | CNA |
|---|---|
| Graduation year | 2008 |
| Gender (as listed) | Male |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1427598119 |
| Corrections | Report an error or suggest an update → |
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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians