Individual provider Active NPI

Yen-Yen Susanna Gee, MD

  • Anesthesiology Physician
  • Chicago, IL
National Provider Identifier
1558986943
Registry record updated Aug 21, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Anesthesiology PhysicianTaxonomy code 207L00000X
License
125077017 Issued in IL
Practice address
251 E Huron St Ste Feinberg
Chicago, IL 60611-2908
Phone
(312) 695-0061
Fax
(312) 695-9013
NPI assigned
Jun 10, 2020
Sex
Female
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on Aug 21, 2025

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Anesthesiology Physician 207L00000X 125077017 IL Primary

Addresses

Primary practice location

251 E Huron St Ste Feinberg
Chicago, IL 60611-2908

Mailing address

251 E Huron St Ste Feinberg
Chicago, IL 60611-2908
Phone (312) 695-0061

Other practice location 1

5841 S Maryland Ave # Mc4028
Chicago, IL 60637-1443
Phone (773) 702-6842

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
I20250924002154 IL Practitioner - Anesthesiology 7113341603 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Anesthesiology
Education
University of Toronto, Faculty of Medicine, 2020
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices

Practice addresses (Care Compare)

251 E Huron
704 Dept of Anes
Chicago, IL 60611-2908
Phone (312) 926-2280

Hospital & facility affiliations

National Provider Directory

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

Practice roles

OrganizationSpecialtyStatusNew patients
Northwestern Medical Faculty Foundation CurrentSince Aug 1, 2025 Accepting new patients
Northwestern Medical Faculty Foundation CurrentSince Aug 1, 2025 Accepting new patients
University of Chicago Medical Center PastSince Jun 1, 2020 Accepting new patients
Central Dupage Physician Group Past Accepting new patients

Locations

Dept 5777
Carol Stream, IL 60122

251 E Huron St
Ste 5
Chicago, IL 60611
Phone (312) 926-2280

251 E Huron St
Ste Feinberg
Chicago, IL 60611
Phone (312) 695-0061

251 E Huron St
Ste 5704
Chicago, IL 60611
Phone (312) 695-0061

660 N Westmoreland Rd
#302
Lake Forest, IL 60045

Organizations & group practices 4

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 1

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": "1591747200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1755734400000",
    "number": "1558986943",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "251 E HURON ST STE FEINBERG",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606112908",
            "telephone_number": "312-695-0061",
            "fax_number": "312-695-9013"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "251 E HURON ST STE FEINBERG",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606112908",
            "telephone_number": "312-695-0061",
            "fax_number": "312-695-9013"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "5841 S Maryland Ave # Mc4028",
            "address_purpose": "LOCATION",
            "city": "Chicago",
            "state": "IL",
            "postal_code": "606371443",
            "country_code": "US",
            "telephone_number": "773-702-6842",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "GEE",
        "first_name": "YEN-YEN",
        "middle_name": "SUSANNA",
        "credential": "MD",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2020-06-10",
        "last_updated": "2025-08-21",
        "certification_date": "2025-08-21",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207L00000X",
            "taxonomy_group": "",
            "desc": "Anesthesiology",
            "state": "IL",
            "license": "125077017",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Chicago, IL

Sources for this page

Verify at the official NPI Registry.