Leslie A. Greskowiak, APN-CNP

Primary specialty

Nurse PractitionerTaxonomy code 363L00000X

License

209018380 Issued in IL

Practice address

8 Salt Creek LN Ste 301
Hinsdale, IL 60521-2903

Phone

(331) 221-2550

NPI assigned

Oct 15, 2018

Last updated

May 12, 2026By the provider in NPPES

Sex

Female

Sole proprietor

No

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

Specialties & licenses 2

Addresses

Electronic endpoints 1

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, 2018

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Group practices

Endeavor Health Medical GroupGroup PAC ID 2163334699, 3,330 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Elmhurst Memorial Hospital Hospital, Elmhurst, IL, CCN 140200
• Edward Hospital Hospital, Naperville, IL, CCN 140231

Merit-based Incentive Payment System (MIPS)

Final score

84.9 of 100Reported as group

Quality

75.91

Promoting interoperability

99

Improvement activities

40

Cost

74.6

Medicare enrollment (NPD)

Enrolled

Credentials

Nurse Practitioner

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: lgreskowiak203717@direct.edward.org

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.

• Endeavor Health Medical Group

  dba NorthShore University HealthSystem Faculty Practice Associates

  • Allergy & Immunology Physician
  • Evanston, IL
  • NPI 1497701882
  Medicare reassignment Care Compare group NPD
• Edward Health Ventures

  • Multi-Specialty Clinic/Center
  • Bolingbrook, IL
  • NPI 1962452912
  Medicare reassignment NPD
• Edward Health Ventures

  • Nurse Practitioner
  • Naperville, IL
  • NPI 1093117350
  NPD
• Endeavor Health Medical Group

  dba NorthShore Anesthesia Group

  • Anesthesiology Physician
  • Evanston, IL
  • NPI 1265695944
  NPD

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

• Edward Hospital

  dba Endeavor Health Edward Hospital

  • General Acute Care Hospital
  • Naperville, IL
  • NPI 1427069632
  Care Compare affiliation
• Elmhurst Memorial Hospital

  dba Endeavor Health Elmhurst Hospital

  • General Acute Care Hospital
  • Elmhurst, IL
  • NPI 1548306343
  Care Compare affiliation

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

{
    "created_epoch": "1539561600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1778544000000",
    "number": "1164998332",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "8 SALT CREEK LN STE 301",
            "city": "HINSDALE",
            "state": "IL",
            "postal_code": "605212903",
            "telephone_number": "331-221-2550"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "8 SALT CREEK LN STE 301",
            "city": "HINSDALE",
            "state": "IL",
            "postal_code": "605212903",
            "telephone_number": "331-221-2550"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "GRESKOWIAK",
        "first_name": "LESLIE",
        "middle_name": "A.",
        "credential": "APN-CNP",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2018-10-15",
        "last_updated": "2026-05-12",
        "certification_date": "2026-05-12",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363L00000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner",
            "state": "IL",
            "license": "209018380",
            "primary": true
        },
        {
            "code": "363LF0000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Family",
            "state": "IL",
            "license": "209.018380",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "lgreskowiak203717@direct.edward.org",
            "affiliation": "N",
            "use": "DIRECT",
            "useDescription": "Direct",
            "contentType": "OTHER",
            "contentTypeDescription": "Other",
            "contentOtherDescription": "Other",
            "address_1": "8 Salt Creek Ln Ste 301",
            "city": "Hinsdale",
            "state": "IL",
            "country_code": "US",
            "postal_code": "605212903",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

• Karolina Grauslyte
• Joseph J Greco Jr., MD
• Jill Sylvia Greenberg, AUD
• Gregory J Daniels DDS PC
• Margaret M Gregus
• Jason Griffin, MD
• Lynna Jantra Gripentrog, DMD
• Carla J Grobe-Daw
• Grow Within LLC
• Srilata Gundala, M.D.

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

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on May 12, 2026; 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.