Catherine Kozlowski, PA-C
NPI 1811274970 · Physician Assistant · Chicago, IL
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Catherine Kozlowski, PA-C is a Physician Assistant provider in Chicago, IL (NPI 1811274970).
Provider details
- NPI number
- 1811274970
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Female
- Sole proprietor
- No
- License
- 085001512 (IL)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
14 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 6 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Oxycodone Hcl | 74 | 70 |
| Famotidine | 53 | 50 |
| Tramadol Hcl | 45 | 43 |
| Meloxicam | 29 | 26 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 17 | 17 |
| Naproxen | 17 | 16 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means , never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Additional practice locations (1)
- 2450 Wolf RdWestchester, IL 60154-5643Phone: (877) 632-6637Fax: (708) 409-5179
Registry dates
- Enumerated
- 2011-11-03
- Last updated
- 2024-04-30
- Certified
- 2024-04-30
Frequently asked questions
- What is Catherine Kozlowski's NPI number?
- Catherine Kozlowski's National Provider Identifier (NPI) is 1811274970, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Catherine Kozlowski's specialty?
- Catherine Kozlowski is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Catherine Kozlowski located?
- Catherine Kozlowski's practice location on file with NPPES is 3021 North Sheffield Avenue, Chicago, IL 60673-5643.
- What is Catherine Kozlowski's phone number?
- The practice phone number listed in the NPPES registry for Catherine Kozlowski is (872) 843-0550.
- Does Catherine Kozlowski accept Medicare?
- Catherine Kozlowski is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Catherine Kozlowski's NPI active?
- Yes — Catherine Kozlowski's NPI (1811274970) is active in the NPPES registry as of the last update on 2024-04-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.