Individual provider Active NPI

Jacqueline Sielaff

  • Nurse Practitioner
  • Crestwood, IL
National Provider Identifier
1083455430
Registry record updated Jan 28, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Nurse PractitionerTaxonomy code 363L00000X
License
209029794 Issued in IL
Practice address
4736 Cal Sag Rd Ste a
Crestwood, IL 60418-1423
Phone
(708) 390-7001
NPI assigned
May 31, 2024
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jan 28, 2026

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Nurse Practitioner 363L00000X 209029794 IL Primary

Addresses

Primary practice location

4736 Cal Sag Rd Ste a
Crestwood, IL 60418-1423

Mailing address

4736 Cal Sag Rd Ste a
Crestwood, IL 60418-1423
Phone (708) 390-7001

Medicare participation

Medicare enrollment files
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

Enrollment IDStateProvider typePAC IDDetails
I20240708000266 IL Practitioner - Nurse Practitioner 8729522370 Reassigns benefits to 1 organization

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Nurse Practitioner

Practice roles

OrganizationSpecialtyStatusNew patients
Midwest Express Care 2, Inc CurrentSince Jun 3, 2024 Accepting new patients
Midwest Express Care 2, Inc CurrentSince Jun 3, 2024 Accepting new patients

Locations

40 75th St
Willowbrook, IL 60527
Phone (630) 326-5312

Interoperability endpoints

  • Direct secure messaging: jacqueline.sielaff.1@14940.direct.athenahealth.com

Organizations & group practices 2

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

NPI Registry JSON

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

{
    "created_epoch": "1717113600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1769558400000",
    "number": "1083455430",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "4736 CAL SAG RD STE A",
            "city": "CRESTWOOD",
            "state": "IL",
            "postal_code": "604181423",
            "telephone_number": "708-390-7001"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "4736 CAL SAG RD STE A",
            "city": "CRESTWOOD",
            "state": "IL",
            "postal_code": "604181423",
            "telephone_number": "708-390-7001"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "SIELAFF",
        "first_name": "JACQUELINE",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2024-05-31",
        "last_updated": "2026-01-28",
        "certification_date": "2026-01-28",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363L00000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner",
            "state": "IL",
            "license": "209029794",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Crestwood, IL

Sources for this page

Verify at the official NPI Registry.