Megan Olszak, APRN, FNP-BC, FNP-C

Primary specialty

Nurse PractitionerTaxonomy code 363L00000X

License

209.033215 Issued in IL

Practice address

3000 N Halsted St Ste 401
Chicago, IL 60657-9268

Phone

(773) 296-3636

Fax

(773) 296-3639

NPI assigned

Jun 12, 2025

Sex

Female

Sole proprietor

No

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 1

Addresses

Medicare fee-for-service enrollment

Enrolled in IL

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: No

Green means eligible to order or refer.

Enrollment records 1

Specialty

Nurse Practitioner

Education

Other, 2025

Medicare assignment

May accept Medicare assignment

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

State licenses

Practice roles

Locations

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

• Dermatologists of Illinois, PLLC

  dba The Skin Care Center

  • Dermatology Physician
  • Lake Forest, IL
  • NPI 1851358345
  Medicare reassignment NPD

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1749686400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1757635200000",
    "number": "1326933847",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "3000 N HALSTED ST STE 401",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606579268",
            "telephone_number": "773-296-3636",
            "fax_number": "773-296-3639"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "3000 N HALSTED ST STE 401",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606579268",
            "telephone_number": "773-296-3636",
            "fax_number": "773-296-3639"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "OLSZAK",
        "first_name": "MEGAN",
        "credential": "APRN, FNP-BC, FNP-C",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2025-06-12",
        "last_updated": "2025-09-12",
        "certification_date": "2025-09-12",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363L00000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner",
            "state": "IL",
            "license": "209.033215",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Scott J Olson, COTA
• Sydney Leavitt Olson
• Alexis B Olsson, DDS
• Leah Theresa Olsson, CRNA
• Stacy Olswang, O.D.
• Iwona Olszewska
• Anthony P. Oltean, L.C.S.W., C.A.D.C.
• Cristina Olteanu, L.P.T.
• Allan J Olthoff, D.O.
• Chloe Oltman, LPC

• Nurse Practitioner in Chicago, IL
• Providers in Chicago, IL by specialty
• Nurse Practitioner in Illinois

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 12, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.