Karen Ann Kowalczyk , APN-CNP
Nurse Practitioner • Addison, IL
Professional Overview & Biography Verified Profile Summary
Karen Kowalczyk, APN-CNP is a certified Nurse Practitioner practicing in Addison, IL. With approximately 18 years of clinical experience since completing medical education in 2008, Karen Kowalczyk delivers high-quality medical care to the local community at 303 W LAKE ST STE 200.
Karen Kowalczyk is affiliated with Endeavor Health Medical Group and accepts Medicare assignment.
Frequently performed procedures and clinical services include established patient outpatient office visit, annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.
Practice Location & Contact Primary Location
303 W Lake St Ste 200
Addison, IL 601012500
Medicare Profile & Education
Other
2008
✓ Accepts Assignment
In-Person Only
Specialty Benchmarks & Practice Insights
Comparative analytics for Nurse Practitioner in Addison, IL
Practicing in Addison, IL (4929 Statewide)
In-Person Office Visits Only
Under CMS Medicare Fee Schedule vs Standard Submitted Charges
Clinical Seniority & Experience Comparison
Performed Procedures & Service Volume
Top Medicare Part B procedures performed by this practitioner
| HCPCS Code & Description | Services | Patients | Submitted Charge | Medicare Allowed |
|---|---|---|---|---|
|
99214
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more
|
62 | 43 | $278.00 | $115.55 |
|
99213
Established patient office or other outpatient visit, typically 15 minutes
|
24 | 19 | $200.00 | $81.37 |
Medical Specialties & State Licenses
CMS Verified: 2026-04-09NUCC Taxonomy Code: 363L00000X
(1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision making and direct accountability for clinical judgment across the health care continuum or in a certified specialty. (2) A registered nurse who has completed additional training beyond basic nursing education and who provides primary health care services in accordance with state nurse practice laws or statutes. Tasks performed by nurse practitioners vary with practice requirements mandated by geographic, political, economic, and social factors. Nurse practitioner specialists include, but are not limited to, family nurse practitioners, gerontological nurse practitioners, pediatric nurse practitioners, obstetric-gynecologic nurse practitioners, and school nurse practitioners.
NUCC Taxonomy Code: 363LF0000X
Definition to come...
Hospital & Practice Group Affiliations
Endeavor Health Medical Group
2650 Ridge Ave, Evanston, IL 602011700
Practice Associates & Co-Workers
Healthcare professionals and specialists practicing at this location or sharing practice phone/fax
Nurse Practitioner
APNCNP
Internal Medicine
Doctor of Medicine (M.D.)
Family Medicine
Doctor of Medicine (M.D.)
Family Medicine
Doctor of Medicine (M.D.)
Physician Assistant
Physician Assistant (Certified)
Family Medicine
Doctor of Medicine (M.D.)
Career & Practice History Timeline
Chronological log of verified NPI updates, location relocations, credentials, and registry changes
Recorded as KAREN KOWALCZYK, APN-CNP
Nurse Practitioner (License #209007542 in IL)
Registered at 303 W LAKE ST STE 200, ADDISON, IL 601012500 (Tel: 3312219001)
Registered at 4201 WINFIELD RD FL 4, WARRENVILLE, IL 605554025 (Tel: 3312216377)
NPI status registered as active in NPPES database
Registered at 303 W LAKE ST, SUITE 200, ADDISON, IL 60101 (Tel: 3312219001)
Registered at 172 SCHILLER, ELMHURST, IL 601262885 (Tel: 3312219000)
Recorded as KAREN KOWALCZYK, APN, NP-C
Nurse Practitioner (License #209.007542 in IL)
NPI status registered as active in NPPES database
Registered at 431 W LIBERTY ST, WAUCONDA, IL 600842452 (Tel: 8475262151)
Registered at 431 W LIBERTY ST, WAUCONDA, IL 600842452 (Tel: 8475262151)
Recorded as KAREN KOWALCZYK, APN, NP-C
Nurse Practitioner (License #209.007542 in IL)
First registered as active Individual Practitioner in NPPES Database.
Patient & Community Reviews
Verified patient ratings, medical care experiences, and facility photos
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NPI Administrative Meta
Mailing Address
4201 Winfield Rd Fl 4
Warrenville, IL 605554025
Phone: 3312216377
This directory listing is for informational purposes only and does not constitute medical advice, diagnosis, or physician endorsement. If you are experiencing a medical emergency, please call 911 immediately.