Ryan Michael Weiss, MD

Primary specialty

Nephrology PhysicianTaxonomy code 207RN0300X

License

036.155384 Issued in IL

Practice address

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

Phone

(708) 354-1306

Fax

(708) 354-1538

NPI assigned

Mar 20, 2018

Sex

Male

Sole proprietor

Yes

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

Specialties & licenses 5

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: Yes

Green means eligible to order or refer.

Enrollment records 1

Specialty

Nephrology

Education

Other, 2017

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Group practices

Nephrology Associates of Northern Illinois LTDGroup PAC ID 2163328675, 117 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Uchicago Medicine Adventhealth la Grange Hospital, La Grange, IL, CCN 140065
• Uchicago Medicine Adventhealth Hinsdale Hospital, Hinsdale, IL, CCN 140122
• Uchicago Medicine Adventhealth Bolingbrook Hospital, Bolingbrook, IL, CCN 140304
• Advocate Good Samaritan Hospital Hospital, Downers Grove, IL, CCN 140288

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• FHIR API: https://fhir.nextgen.com/nge/prod/fhir-api-r4/fhir/r4/
• Direct secure messaging: rweiss54417@direct.acumenmd.com

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.

• Nephrology Associates of Northern Illinois, LTD.

  • Nephrology Physician
  • Oak Brook, IL
  • NPI 1124069182

  IL, Nephrology

  Medicare reassignment Care Compare group NPD
• Nani Elk Grove

  • Nephrology Physician
  • Oak Brook, IL
  • NPI 1154675528

  IL, Nephrology

  Medicare reassignment NPD
• Nani Vascular North ASC LLC

  • Nephrology Physician
  • Addison, IL
  • NPI 1568262236

  IL, Nephrology

  Medicare reassignment NPD
• Nephrology Associates of Northern Illinois, LTD.

  • Nephrology Physician
  • Oak Brook, IL
  • NPI 1134319924

  Nephrology

  NPD
• Linda Roberts & Associates Inc

  • Registered Dietitian
  • Wheaton, IL
  • NPI 1073832002
  NPD (past)

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

• Adventist Bolingbrook Hospital

  • General Acute Care Hospital
  • Bolingbrook, IL
  • NPI 1164530465

  Hospital

  Care Compare affiliation
• Adventist Midwest Health

  • General Acute Care Hospital
  • Hinsdale, IL
  • NPI 1265465439

  Hospital

  Care Compare affiliation
• Adventist Midwest Health

  • General Acute Care Hospital
  • La Grange, IL
  • NPI 1407889652

  Hospital

  Care Compare affiliation
• Adventist Midwest Health

  • Psychiatric Hospital Unit
  • Hinsdale, IL
  • NPI 1447270780

  Hospital

  Care Compare affiliation
• Adventist Midwest Health

  • Rehabilitation Hospital Unit
  • La Grange, IL
  • NPI 1588068274

  Hospital

  Care Compare affiliation
• Advocate Health and Hospitals Corporation

  • General Acute Care Hospital
  • Downers Grove, IL
  • NPI 1578670543

  Hospital

  Care Compare affiliation

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

{
    "created_epoch": "1521504000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1754265600000",
    "number": "1295239762",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "120 W 22ND ST",
            "city": "OAK BROOK",
            "state": "IL",
            "postal_code": "605231557",
            "telephone_number": "630-573-5000",
            "fax_number": "630-491-5472"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "5201 WILLOW SPRINGS RD STE 260",
            "city": "LA GRANGE HIGHLANDS",
            "state": "IL",
            "postal_code": "605256537",
            "telephone_number": "708-354-1306",
            "fax_number": "708-354-1538"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "5841 S Maryland Ave",
            "address_purpose": "LOCATION",
            "city": "Chicago",
            "state": "IL",
            "postal_code": "606371443",
            "country_code": "US",
            "telephone_number": "773-702-1150",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "2055 W Army Trail Rd Ste 110E",
            "address_purpose": "LOCATION",
            "city": "Addison",
            "state": "IL",
            "postal_code": "601011478",
            "country_code": "US",
            "telephone_number": "708-354-1306",
            "fax_number": "708-354-1538",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "WEISS",
        "first_name": "RYAN",
        "middle_name": "MICHAEL",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2018-03-20",
        "last_updated": "2025-08-04",
        "certification_date": "2025-08-04",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "KY",
            "license": "54096",
            "primary": false
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "IL",
            "license": "036.155384",
            "primary": false
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "KY",
            "license": "54096",
            "primary": false
        },
        {
            "code": "390200000X",
            "taxonomy_group": "",
            "desc": "Student in an Organized Health Care Education/Training Program",
            "state": "IL",
            "license": "036.155384",
            "primary": false
        },
        {
            "code": "207RN0300X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Nephrology",
            "state": "IL",
            "license": "036.155384",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "credentialing@nephdocs.com",
            "affiliation": "N",
            "address_1": "120 W 22nd St",
            "city": "Oak Brook",
            "state": "IL",
            "country_code": "US",
            "postal_code": "605231557",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

• Steve Tolley
• Samuel J Traverso, DO
• Sara Elizabeth Uhlir, NURSE PRACTITIONER
• Uropartners, LLC
• Walgreen Co
• Amy M Willson, PAC
• Barbara F Willson, PA
• Amanda S Wilson, ATC
• Workright Occupational Health Services SC
• Eric Yang, MD

• All providers in La Grange Highlands, IL
• Nephrology Physician in Illinois

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 4, 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.