Quick answers
- Does Catherine N. Kowal accept Medicare assignment?
- Yes. Medicare's clinician data says Catherine N. Kowal accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Catherine N. Kowal see?
- In 2024, CMS data shows 651 Original Medicare patients and 182,256 services for Catherine N. Kowal. This counts Original Medicare only and measures volume, not quality.
- What is Catherine N. Kowal's NPI number?
- 1013909332. 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 Catherine N. Kowal, 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 | 651 |
|---|---|
| Services billed to Medicare | 182,256 |
| Different services or procedures | 43 |
| Participating Medicare provider | Yes |
| Average age of these patients | 76 |
Most frequent services
- Injection, certolizumab pegol, 1 mg (code may be used for medicare when drug administered under the direct supervision of a physician, not for use when drug is self administered) (J0717)103,000 services
- Injection, tocilizumab, 1 mg (J3262)20,840 services
- Injection, abatacept, 10 mg (code may be used for medicare when drug administered under the direct supervision of a physician, not for use when drug is self administered) (J0129)17,450 services
- Injection, golimumab, 1 mg, for intravenous use (J1602)12,250 services
- Injection, romosozumab-aqqg, 1 mg (J3111)11,132 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%
- Arthritis75%
- Osteoporosis47%
- Ischemic heart disease37%
- Anxiety32%
Hospitals where Catherine N. Kowal works
Medicare's Facility Affiliation Data lists Catherine N. Kowal 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.
- Cape Coral HospitalCape Coral, FL · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 100244
- Lee Memorial HospitalFort Myers, FL · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 100012
- Naples Community HospitalNaples, FL · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 100018
- Northwestern Medicine Central Dupage HospitalWinfield, IL · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 140242
Practice locations
Addresses where Catherine N. Kowal is enrolled with Medicare (CMS data updated October 2, 2026).
- 1855 Veterans Park Dr, Suite 103Naples, FL 34109 (239) 596‑5220
Group practices
Medicare enrollment lists Catherine N. Kowal as a member of this group (CMS data updated October 2, 2026).
- American Arthritis and Rheumatology Associates LLC65 clinicians in the group
Specialties
- Rheumatologyprimary
Other rheumatologists in Naples
Clinicians with the same Medicare primary specialty in Naples, FL — not a recommendation.
Other clinicians in American Arthritis and Rheumatology Associates LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1985 (41 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1013909332 |
| 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