Individual provider Active NPI

James Patrick Sostak II, M.D.

  • Sports Medicine (Orthopaedic Surgery) Physician
  • Geneva, IL
National Provider Identifier
1235200833
Registry record updated Jun 26, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Sports Medicine (Orthopaedic Surgery) PhysicianTaxonomy code 207XX0005X
License
036127437 Issued in IL
Practice address
2525 Kaneville Road
Fox Valley Orthopedics
Geneva, IL 60134
Phone
(630) 584-1400
Fax
(630) 584-1733
NPI assigned
Nov 13, 2006
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jun 26, 2025

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Orthopaedic Surgery Physician 207X00000X 49485-020 WI
Sports Medicine (Orthopaedic Surgery) Physician 207XX0005X 036127437 IL Primary

Addresses

Primary practice location

2525 Kaneville Road
Fox Valley Orthopedics
Geneva, IL 60134

Mailing address

2525 Kaneville Road
Fox Valley Orthopedics
Geneva, IL 60134
Phone (630) 584-1400

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: Yes
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20110810000616 IL Practitioner - Sports MedicinePractitioner - Orthopedic Surgery 6204952781 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Sports MedicineAlso: Orthopedic Surgery
Education
Loyola University of Chicago, Stritch School of Medicine, 2005
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Fox Valley Orthopaedic Associates, PLLCGroup PAC ID 6507830387, 73 clinicians

Practice addresses (Care Compare)

1975 Lin Lor LN
Elgin, IL 60123-4902
Phone (847) 468-1400

2350 Royal Blvd
Suite 200
Elgin, IL 60123-4718
Phone (847) 931-5300

2525 Kaneville Rd
Geneva, IL 60134-2578
Phone (847) 468-1400

Hospital & facility affiliations

  • Home Care Experts Home health agency, Burr Ridge, IL, CCN 147730
  • Aspire Home Healthcare, LLC Home health agency, Morton Grove, IL, CCN 148139
  • Northwestern Medicine Delnor Community Hospital Hospital, Geneva, IL, CCN 140211
  • Advocate Sherman Hospital Hospital, Elgin, IL, CCN 140030
  • Northwestern Medicine Central Dupage Hospital Hospital, Winfield, IL, CCN 140242

Merit-based Incentive Payment System (MIPS)

Final score
81.69 of 100Reported as group
Quality
74.66
Promoting interoperability
100
Improvement activities
40
Cost
64.3

Procedures performed for Medicare patients

ProcedureNumber of procedures
Lower limb (leg) arthroscopy (minimally invasive joint repair)13
Upper limb (arm) arthroscopy (minimally invasive joint repair)25

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
49485-020WIMDOrthopaedic Surgery Physician
036127437ILMDSports Medicine (Orthopaedic Surgery) Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Fox Valley Orthopaedic Associates, S.C. Orthopaedic Surgery CurrentSince Aug 29, 2011 Accepting new patients
Fox Valley Orthopaedic Associates, PLLC Current Accepting new patients
Fox Valley Orthopaedic Associates, PLLC Orthopaedic Surgery CurrentSince Aug 29, 2011 Accepting new patients

Locations

2971 W Algonquin Rd
Ste 101A
Algonquin, IL 60102
Phone (847) 854-8590

420 W Northwest Hwy
Ste M
Barrington, IL 60010
Phone (847) 277-1376

2350 Royal Blvd
Ste 200
Elgin, IL 60123
Phone (847) 931-5300

1710 N Randall Rd
Ste 140
Elgin, IL 60123
Phone (224) 293-1170

1975 Lin Lor Ln
Elgin, IL 60123
Phone (847) 468-1400

2535 Soderquist Ct
Geneva, IL 60134
Phone (630) 584-1400

2525 Kaneville Rd
Geneva, IL 60134
Phone (630) 584-1400

1500 Sycamore Rd
Yorkville, IL 60560
Phone (630) 553-4470

Interoperability endpoints

  • Direct secure messaging: james.sostak.1@26750.direct.athenahealth.com

Organizations & group practices 3

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.

Hospital & facility affiliations 7

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": "1163376000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1750896000000",
    "number": "1235200833",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "2525 KANEVILLE ROAD",
            "address_2": "FOX VALLEY ORTHOPEDICS",
            "city": "GENEVA",
            "state": "IL",
            "postal_code": "60134",
            "telephone_number": "630-584-1400",
            "fax_number": "630-584-1733"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "2525 KANEVILLE ROAD",
            "address_2": "FOX VALLEY ORTHOPEDICS",
            "city": "GENEVA",
            "state": "IL",
            "postal_code": "60134",
            "telephone_number": "630-584-1400",
            "fax_number": "630-584-1733"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "SOSTAK",
        "first_name": "JAMES",
        "middle_name": "PATRICK",
        "name_prefix": "Dr.",
        "name_suffix": "II",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-11-13",
        "last_updated": "2025-06-26",
        "certification_date": "2025-06-26",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207X00000X",
            "taxonomy_group": "",
            "desc": "Orthopaedic Surgery",
            "state": "WI",
            "license": "49485-020",
            "primary": false
        },
        {
            "code": "207XX0005X",
            "taxonomy_group": "",
            "desc": "Orthopaedic Surgery, Sports Medicine",
            "state": "IL",
            "license": "036127437",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Geneva, IL

Sources for this page

Verify at the official NPI Registry.