NPIMap

Individual provider Active NPI

Leonard Potempa, MD

  • Nephrology Physician
  • La Grange Highlands, IL
National Provider Identifier
1710984646
Registry record updated Apr 29, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Nephrology PhysicianTaxonomy code 207RN0300X
License
036066846 Issued in IL
Practice address
5201 Willow Springs Rd
Suite 260
La Grange Highlands, IL 60525-6537
Phone
(708) 354-1306
Fax
(708) 354-1538
NPI assigned
Jul 7, 2005
Last updated
Apr 29, 2025By the provider in NPPES
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Apr 29, 2025

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Nephrology Physician 207RN0300X 036066846 IL Primary

Addresses

Primary practice location

5201 Willow Springs Rd
Suite 260
La Grange Highlands, IL 60525-6537

Mailing address

120 W 22ND St Ste 200
Oak Brook, IL 60523-1563
Phone (630) 573-5000

Other practice location 1

2340 S Highland Ave Ste 160
Lombard, IL 60148-5395
Phone (630) 495-9356

Other identifiers 4

IdentifierTypeStateIssuer
1616108OtherILBCBS
03666846MedicaidIL
C30486OtherILRR MEDICARE GROUP
110095959OtherILRR MEDICARE INDIVIDUAL

Electronic endpoints 3

TypeEndpointUseAffiliation
Direct Messaging Address credentialing@nephdocs.com Direct
Direct Messaging Address lpotempa252094@direct.myadvocateaurora.org Direct
FHIR URL https://EpicFHIR.aurora.org/FHIR/MYAURORA/api/FHIR/DSTU2/

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in IL
Eligible to order & refer
  • Part B services
  • Medical equipment
  • Home health
  • Power mobility devices
  • Hospice
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20091228000525 IL Practitioner - Nephrology 2668380056 Reassigns benefits to 2 organizations

Care Compare profile

Medicare Care Compare
Specialty
Nephrology
Education
Loyola University of Chicago, Stritch School of Medicine, 1982
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices
Nani Elk GroveGroup PAC ID 8123266376, 18 clinicians

Practice addresses (Care Compare)

800 Biesterfield Rd
Elk Grove Village, IL 60007-3372
Phone (847) 981-3680

901 Biesterfield Rd
Suite 310
Elk Grove Village, IL 60007-7324
Phone (847) 952-9332

Hospital & facility affiliations

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Medicine

Practice roles

OrganizationSpecialtyStatusNew patients
Nephrology Associates of Northern Illinois, LTD. Nephrology CurrentSince Oct 1, 1994 Accepting new patients
Nephrology Associates of Northern Illinois, LTD. Nephrology Current Accepting new patients
Nani Elk Grove Nephrology CurrentSince Oct 1, 2013 Accepting new patients
Linda Roberts & Associates Inc Past Accepting new patients
Southwest Virginia Nephrology LLC Nephrology Past Accepting new patients

Locations

3223 W 63rd St
Chicago, IL 60629
Phone (773) 735-4884

3825 Highland Ave
Ste 4C
Downers Grove, IL 60515
Phone (630) 968-1595

800 Biesterfield Rd
Ste 104
Elk Grove Village, IL 60007
Phone (847) 593-9182

901 Biesterfield Rd
Ste 310
Elk Grove Vlg, IL 60007
Phone (847) 437-7070

5201 Willow Springs Rd
Ste 260
La Grange Highlands, IL 60525
Phone (630) 554-3456

2340 S Highland Ave
Ste 160
Lombard, IL 60148
Phone (630) 495-9356

120 Spalding Dr
Ste 410
Naperville, IL 60540
Phone (630) 369-0780

120 W 22nd St
Oak Brook, IL 60523

120 W 22nd St
Ste 200
Oak Brook, IL 60523
Phone (630) 575-5000

855 Madison St
Oak Park, IL 60302
Phone (708) 386-1000

Interoperability endpoints

  • FHIR API: https://fhir.nextgen.com/nge/prod/fhir-api-r4/fhir/r4/
  • Direct secure messaging: lpotempa49706@direct.acumenmd.com

Organizations & group practices 5

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.

Hospital & facility affiliations 11

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

NPI Registry JSON

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

{
    "created_epoch": "1120694400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1745884800000",
    "number": "1710984646",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "120 W 22ND ST STE 200",
            "city": "OAK BROOK",
            "state": "IL",
            "postal_code": "605231563",
            "telephone_number": "630-573-5000"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "5201 WILLOW SPRINGS RD",
            "address_2": "SUITE 260",
            "city": "LA GRANGE HIGHLANDS",
            "state": "IL",
            "postal_code": "605256537",
            "telephone_number": "708-354-1306",
            "fax_number": "708-354-1538"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "2340 S Highland Ave Ste 160",
            "address_purpose": "LOCATION",
            "city": "Lombard",
            "state": "IL",
            "postal_code": "601485395",
            "country_code": "US",
            "telephone_number": "630-495-9356",
            "fax_number": "630-495-9357",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "POTEMPA",
        "first_name": "LEONARD",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2005-07-07",
        "last_updated": "2025-04-29",
        "certification_date": "2025-04-29",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RN0300X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Nephrology",
            "state": "IL",
            "license": "036066846",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "BCBS",
            "identifier": "1616108",
            "state": "IL"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "03666846",
            "state": "IL"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "RR MEDICARE GROUP",
            "identifier": "C30486",
            "state": "IL"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "RR MEDICARE INDIVIDUAL",
            "identifier": "110095959",
            "state": "IL"
        }
    ],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "credentialing@nephdocs.com",
            "affiliation": "N",
            "use": "DIRECT",
            "useDescription": "Direct",
            "address_1": "120 W 22nd St Ste 200",
            "city": "Oak Brook",
            "state": "IL",
            "country_code": "US",
            "postal_code": "605231563",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "lpotempa252094@direct.myadvocateaurora.org",
            "affiliation": "N",
            "use": "DIRECT",
            "useDescription": "Direct",
            "address_1": "5201 Willow Springs Rd",
            "address_2": "SUITE 260",
            "city": "LA Grange Highlands",
            "state": "IL",
            "country_code": "US",
            "postal_code": "605256537",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "endpointType": "FHIR",
            "endpointTypeDescription": "FHIR URL",
            "endpoint": "https://EpicFHIR.aurora.org/FHIR/MYAURORA/api/FHIR/DSTU2/",
            "affiliation": "N",
            "address_1": "5201 Willow Springs Rd",
            "address_2": "SUITE 260",
            "city": "LA Grange Highlands",
            "state": "IL",
            "country_code": "US",
            "postal_code": "605256537",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

Other providers in La Grange Highlands, IL

Sources for this page

Verify at the official NPI Registry.