Individual provider Active NPI

Katherine Grace Claudia Weller

  • Obstetrics & Gynecology Physician
  • Chicago, IL
National Provider Identifier
1245969013
Registry record updated Mar 1, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Obstetrics & Gynecology PhysicianTaxonomy code 207V00000X
License
125.079876 Issued in IL
Practice address
1620 W Harrison St
Chicago, IL 60612-3801
Phone
(312) 942-5000
NPI assigned
Jun 7, 2022
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Mar 1, 2026

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Obstetrics & Gynecology Physician 207V00000X 125.079876 IL Primary

Addresses

Primary practice location

1620 W Harrison St
Chicago, IL 60612-3801

Mailing address

1620 W Harrison St
Chicago, IL 60612-3801
Phone (312) 942-5000

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
I20220818000111 IL Order and Referring Only - Obstetrics/GynecologyPractitioner - Obstetrics/Gynecology 3577946987

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled

State licenses

LicenseStateTypeSpecialty
125.079876ILMDObstetrics & Gynecology Physician

NPI Registry JSON

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

{
    "created_epoch": "1654560000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1772323200000",
    "number": "1245969013",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1620 W HARRISON ST",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606123801",
            "telephone_number": "312-942-5000"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1620 W HARRISON ST",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606123801",
            "telephone_number": "312-942-5000"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "WELLER",
        "first_name": "KATHERINE",
        "middle_name": "GRACE CLAUDIA",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2022-06-07",
        "last_updated": "2026-03-01",
        "certification_date": "2026-03-01",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207V00000X",
            "taxonomy_group": "",
            "desc": "Obstetrics & Gynecology",
            "state": "IL",
            "license": "125.079876",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Chicago, IL

Sources for this page

Verify at the official NPI Registry.