NPIMap

Individual provider Active NPI

William H Kobak, M.D.

  • Gynecology Physician
  • St Charles, IL
National Provider Identifier
1023007887
Registry record updated Jan 29, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Gynecology PhysicianTaxonomy code 207VG0400X
License
036091917 Issued in IL
Practice address
3310 W Main St
Suite 200
St Charles, IL 60175-1000
Phone
(630) 897-6044
Fax
(630) 897-0180
NPI assigned
Oct 14, 2005
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jan 29, 2025

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Obstetrics & Gynecology Physician 207V00000X 036091917 IL
Gynecology Physician 207VG0400X 036091917 IL Primary

Addresses

Primary practice location

3310 W Main St
Suite 200
St Charles, IL 60175-1000

Mailing address

PO Box 657
St Charles, IL 60174-0657
Phone (630) 897-6044

Other identifiers 1

IdentifierTypeStateIssuer
036091917MedicaidIL

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
I20041129000048 IL Practitioner - Obstetrics/Gynecology 8022073352 Reassigns benefits to 4 organizations

Care Compare profile

Medicare Care Compare
Specialty
Obstetrics/Gynecology
Education
Indiana University School of Medicine, 1989
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices
The Board of Trustees of the University of IllinoisGroup PAC ID 3072422716, 1,134 clinicians
Cook CountyGroup PAC ID 2860398088, 770 clinicians

Practice addresses (Care Compare)

1740 W Taylor St
Chicago, IL 60612-7232

1801 W Taylor St
Chicago, IL 60612-4795

1901 W Harrison St
Chicago, IL 60612-3714
Phone (312) 633-7292

5525 S Pulaski Rd
Chicago, IL 60629-4400

Hospital & facility affiliations

  • University of Illinois Hospital and Clinics Hospital, Chicago, IL, CCN 140150
  • John H Stroger Jr Hospital Hospital, Chicago, IL, CCN 140124

Merit-based Incentive Payment System (MIPS)

Final score
95.11 of 100Reported as group
Quality
74.7
Promoting interoperability
100
Improvement activities
40
Cost
85.45

Merit-based Incentive Payment System (MIPS)

Final score
93.28 of 100Reported as group
Quality
73.53
Promoting interoperability
100
Improvement activities
40
Cost
70.73

Merit-based Incentive Payment System (MIPS)

Final score
94.03 of 100Reported as group
Quality
71.53
Promoting interoperability
100
Improvement activities
40
Cost
76.89

Procedures performed for Medicare patients

ProcedureNumber of procedures
Removal of the uterus1-10

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
036091917ILMDObstetrics & Gynecology Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Cook County CurrentSince Feb 9, 2023 Accepting new patients
The Kobak Center for Women'S Health,Inc. Current Accepting new patients
Mount Sinai Community Foundation Current Accepting new patients
Cook County Current Accepting new patients
Mount Sinai Community Foundation CurrentSince Sep 1, 2017 Accepting new patients
Mount Sinai Community Foundation Dba Sinia Medical Group CurrentSince Sep 1, 2017 Accepting new patients
Board of Trustees of the University of Illinois CurrentSince Aug 4, 2005 Accepting new patients
Cook County Obstetrics & Gynecology CurrentSince Feb 9, 2023 Accepting new patients
The Board of Trustees of the University of Illinois Current Accepting new patients
Kobak Center for Gynecology, Inc. Gynecology CurrentSince Jun 16, 2011 Accepting new patients
Usc Obstetricians and Gynecologists, Inc. Obstetrics & Gynecology Past Accepting new patients
Illinois Urogynecology, LTD. Gynecology PastSince Feb 1, 2004 Accepting new patients
Board of Trustees of the University of Illinois Past Accepting new patients
Copley Memorial Hospital, Inc. Past Accepting new patients
VHS Acquisition Subsidiary Number 3 Inc Obstetrics & Gynecology Past Accepting new patients

Locations

1501 S California Ave
#7140
Chicago, IL 60608
Phone (773) 257-4758

7732 Solution Ctr
Chicago, IL 60677
Phone (312) 355-6290

1740 W Taylor St
Chicago, IL 60612
Phone (312) 355-4000

26460 Network Pl
Chicago, IL 60673
Phone (708) 786-2900

4646 N Marine Dr
Chicago, IL 60640
Phone (773) 564-5102

1801 W Taylor St
Chicago, IL 60612
Phone (312) 355-1700

1901 W Harrison St
Chicago, IL 60612
Phone (312) 864-5100

500 E 51st St
Chicago, IL 60615
Phone (312) 572-2000

401 Wall St
Unit B
Valparaiso, IN 46383
Phone (219) 281-1729

401 Wall St
Unit J
Valparaiso, IN 46383
Phone (219) 531-7500

1608 Lincolnway
Ste G
Valparaiso, IN 46383

1101 Glendale Blvd
Ste 108
Valparaiso, IN 46383
Phone (219) 531-7500

Interoperability endpoints

  • Direct secure messaging: wkobak17188@uihealth.direct-ci.com

Organizations & group practices 16

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.

View all 16

Hospital & facility affiliations 28

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

View all 28

NPI Registry JSON

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

{
    "created_epoch": "1129248000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1738108800000",
    "number": "1023007887",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 657",
            "city": "ST CHARLES",
            "state": "IL",
            "postal_code": "601740657",
            "telephone_number": "630-897-6044",
            "fax_number": "630-897-0180"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "3310 W MAIN ST",
            "address_2": "SUITE 200",
            "city": "ST CHARLES",
            "state": "IL",
            "postal_code": "601751000",
            "telephone_number": "630-897-6044",
            "fax_number": "630-897-0180"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "KOBAK",
        "first_name": "WILLIAM",
        "middle_name": "H",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2005-10-14",
        "last_updated": "2025-01-29",
        "certification_date": "2025-01-29",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207V00000X",
            "taxonomy_group": "",
            "desc": "Obstetrics & Gynecology",
            "state": "IL",
            "license": "036091917",
            "primary": false
        },
        {
            "code": "207VG0400X",
            "taxonomy_group": "",
            "desc": "Obstetrics & Gynecology, Gynecology",
            "state": "IL",
            "license": "036091917",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "036091917",
            "state": "IL"
        }
    ],
    "endpoints": [],
    "other_names": []
}

Other providers in St Charles, IL

Sources for this page

Verify at the official NPI Registry.