Maria E Onak , APN-CNP
Nurse Practitioner • Glenview, IL
Professional Overview & Biography Verified Profile Summary
Maria Onak, APN-CNP is a certified Nurse Practitioner practicing in Glenview, IL. With approximately 19 years of clinical experience since graduating from Rush Medical College Of Rush University in 2007, Maria Onak delivers high-quality medical care to the local community at 2100 PFINGSTEN RD.
Maria Onak is affiliated with Endeavor Health Medical Group and accepts Medicare assignment.
Frequently performed procedures and clinical services include initial hospital care with moderate level of medical decision making, if using time, at least, subsequent hospital care with moderate levelof medical decision making, if using time, at least, subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.
Practice Location & Contact Primary Location
2100 Pfingsten Rd
Glenview, IL 600261301
Medicare Profile & Education
Rush Medical College Of Rush University
2007
✓ Accepts Assignment
In-Person Only
Specialty Benchmarks & Practice Insights
Comparative analytics for Nurse Practitioner in Glenview, IL
Practicing in Glenview, 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 |
|---|---|---|---|---|
|
99223
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes
|
105 | 95 | $425.94 | $152.04 |
|
99233
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes
|
99 | 48 | $227.84 | $104.18 |
|
99309
Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes
|
92 | 36 | $214.00 | $93.29 |
|
99232
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes
|
28 | 18 | $157.14 | $69.26 |
|
99306
Initial nursing facility visit, typically 45 minutes per day
|
18 | 18 | $368.00 | $157.59 |
Medical Specialties & State Licenses
CMS Verified: 2026-05-05NUCC 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: 363LA2200X
Definition to come...
NUCC Taxonomy Code: 363LG0600X
Definition to come...
Hospital & Practice Group Affiliations
Endeavor Health Medical Group
2650 Ridge Ave, Evanston, IL 602011700
Endeavor Health Medical Group
800 W Central Rd, Arlington Heights, IL 600052349
Phone: 8476181000
Practice Associates & Co-Workers
Healthcare professionals and specialists practicing at this location or sharing practice phone/fax
Physician Assistant
Physician Assistant (Certified)
Nurse Practitioner
APNCNP
Nurse Practitioner
APNCNP
Nurse Practitioner
Nurse Practitioner
Nurse Practitioner
Nurse Practitioner
APNCNP
Career & Practice History Timeline
Chronological log of verified NPI updates, location relocations, credentials, and registry changes
Nurse Practitioner (License #209006771 in IL)
Registered at 2100 PFINGSTEN RD, GLENVIEW, IL 600261301 (Tel: 8475034222)
Registered at 2100 PFINGSTEN RD, GLENVIEW, IL 600261301 (Tel: 8475034222)
Recorded as MARIA ONAK, APN-CNP
Nurse Practitioner (License #209006771 in IL)
NPI status registered as active in NPPES database
Registered at 121 FAIRFILED WAY, STE 207, BLOOMINGDALE, IL 601081559 (Tel: 6305297427)
Registered at 121 FAIRFIELD WAY, SUITE 207, BLOOMINGDALE, IL 601081588 (Tel: 6305297427)
Recorded as MARIA ONAK, APN, CNP
Nurse Practitioner (License #209006771 in IL)
First registered as active Individual Practitioner in NPPES Database.
Patient & Community Reviews
Verified patient ratings, medical care experiences, and facility photos
Sign in to leave a review for Maria Onak
Only verified registered users can submit ratings, post feedback, and upload facility photos.
NPI Administrative Meta
Mailing Address
2100 Pfingsten Rd
Glenview, IL 600261301
Phone: 8475034222
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.