Individual provider Active NPI

Sharon Grouper, MD

  • Anesthesiology Physician
  • East Chicago, IN
National Provider Identifier
1639320591
Registry record updated Jan 28, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Anesthesiology PhysicianTaxonomy code 207L00000X
License
01085812A Issued in IN
Practice address
4321 Fir St
Anesthesia Department
East Chicago, IN 46312-3049
Phone
(219) 392-1700
NPI assigned
Oct 8, 2008
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jan 28, 2026

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

Specialties & licenses 3

Specialty (taxonomy)CodeLicenseStatePrimary
Anesthesiology Physician 207L00000X 75221 WI
Anesthesiology Physician 207L00000X 036.121728 IL
Anesthesiology Physician 207L00000X 01085812A IN Primary

Addresses

Primary practice location

4321 Fir St
Anesthesia Department
East Chicago, IN 46312-3049

Mailing address

4321 Fir St
Anesthesia Department
East Chicago, IN 46312-3049
Phone (219) 392-1700

Other practice location 1

450 W Highway 22
Barrington, IL 60010-1919
Phone (847) 381-0123

Other practice location 2

10400 75th St
Kenosha, WI 53142-7884
Phone (262) 948-5600

Electronic endpoints 2

TypeEndpointUseAffiliation
Direct Messaging Address sgrouper318461@direct.myadvocateaurora.org Direct
FHIR URL https://EpicFHIR.aurora.org/FHIR/MYAURORA/api/FHIR/DSTU2/

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in IL, WI, IN3 enrollments
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 3

Enrollment IDStateProvider typePAC IDDetails
I20090114000772 IL Practitioner - AnesthesiologyPractitioner - Internal Medicine 4789747908 Reassigns benefits to 4 organizations
I20210921001710 WI Practitioner - Anesthesiology 4789747908 Reassigns benefits to 1 organization
I20251210004075 IN Practitioner - Anesthesiology 4789747908 Reassigns benefits to 2 organizations

Care Compare profile

Medicare Care Compare
Specialty
Anesthesiology
Education
Other, 2004
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Vituity-Wisconsin Anesthesia SCGroup PAC ID 2163968819, 144 clinicians
La Porte County Anesthesia Associates, LLCGroup PAC ID 4688633241, 26 clinicians
Nwi Medical Associates , LLCGroup PAC ID 4183087257, 64 clinicians

Practice addresses (Care Compare)

10101 S 27TH St
Franklin, WI 53132-7209
Phone (414) 325-4700

301 W Homer St
Franciscian Health Michigan City
Michigan City, IN 46360-4358
Phone (219) 877-1033

3237 S 16TH St
Milwaukee, WI 53215-4526
Phone (414) 647-5000

3500 Franciscan Way
Franciscian Health Michigan City
Michigan City, IN 46360-0021
Phone (219) 877-8511

4321 Fir St
East Chicago, IN 46312-3049
Phone (219) 392-1700

9555 76TH St
Pleasant Prairie, WI 53158-1984
Phone (262) 577-8000

Hospital & facility affiliations

  • St Catherine Hospital Inc Hospital, East Chicago, IN, CCN 150008
  • Loyola University Medical Center Hospital, Maywood, IL, CCN 140276
  • Franciscan Health Michigan City Hospital, Michigan City, IN, CCN 150015
  • Ascension SE Wisconsin Hospital Hospital, Milwaukee, WI, CCN 520136

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
036.121728ILMDAnesthesiology Physician
01085812AINMDAnesthesiology Physician
75221WIMDAnesthesiology Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Loyola University Medical Center CurrentSince Nov 1, 2024 Accepting new patients
Chicago Surgical Clinic, LTD. CurrentSince Jan 1, 2024 Accepting new patients
Vituity-Wisconsin Anesthesia SC Anesthesiology Current Accepting new patients
Barrington Anesthesia Associates, SC Anesthesiology CurrentSince Nov 1, 2008 Accepting new patients
Vituity-Wisconsin Anesthesia SC Anesthesiology CurrentSince Oct 27, 2024 Accepting new patients
Mobile Anesthesiologists Chicago LLC Anesthesiology CurrentSince Nov 10, 2025 Accepting new patients
Associated Surgical Center LLC CurrentSince Jan 1, 2024 Accepting new patients
Nwi Medical Associates , LLC Anesthesiology CurrentSince Jan 30, 2026 Accepting new patients
Vituity-Wisconsin Anesthesia SC Anesthesiology CurrentSince Oct 27, 2024 Accepting new patients
La Porte County Anesthesia Associates LLC Anesthesiology CurrentSince Nov 1, 2025 Accepting new patients
Loyola University Medical Center CurrentSince Nov 1, 2024 Accepting new patients

Locations

129 W Rand Rd
Ste 1
Arlington Heights, IL 60004
Phone (847) 215-0530

129 W Rand Rd
Arlington Hts, IL 60004
Phone (847) 215-0530

40 S Clay St
Hinsdale, IL 60521
Phone (630) 323-4202

500 W Court St
Kankakee, IL 60901
Phone (800) 585-4119

2160 S 1st Ave
Maywood, IL 60153
Phone (708) 216-4400

1243 Rickert Dr
Naperville, IL 60540
Phone (630) 303-5650

8135 N Milwaukee Ave
Niles, IL 60714
Phone (847) 967-1149

9550 W Higgins Rd
Ste 1100
Rosemont, IL 60018
Phone (773) 756-5760

8930 Gross Point Rd
Ste 700
Skokie, IL 60077
Phone (847) 966-8930

450 W State Route 22
South Barrington, IL 60010
Phone (847) 381-0123

4321 Fir St
East Chicago, IN 46312
Phone (219) 392-1700

301 W Homer St
#M
Michigan City, IN 46360
Phone (219) 877-1033

901 MacArthur Blvd
Munster, IN 46321
Phone (219) 703-1443

2301 N Lake Dr
Milwaukee, WI 53211
Phone (414) 270-4932

5000 W Chambers St
Milwaukee, WI 53210
Phone (414) 447-2089

9555 76th St
Pleasant Prairie, WI 53158
Phone (262) 577-8000

13111 N Port Washington Rd
Thiensville, WI 53097
Phone (262) 243-7300

Organizations & group practices 11

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": "1223424000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1769558400000",
    "number": "1639320591",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "4321 FIR ST",
            "address_2": "ANESTHESIA DEPARTMENT",
            "city": "EAST CHICAGO",
            "state": "IN",
            "postal_code": "463123049",
            "telephone_number": "219-392-1700"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "4321 FIR ST",
            "address_2": "ANESTHESIA DEPARTMENT",
            "city": "EAST CHICAGO",
            "state": "IN",
            "postal_code": "463123049",
            "telephone_number": "219-392-1700"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "450 W Highway 22",
            "address_purpose": "LOCATION",
            "city": "Barrington",
            "state": "IL",
            "postal_code": "600101919",
            "country_code": "US",
            "telephone_number": "847-381-0123",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "10400 75th St",
            "address_purpose": "LOCATION",
            "city": "Kenosha",
            "state": "WI",
            "postal_code": "531427884",
            "country_code": "US",
            "telephone_number": "262-948-5600",
            "fax_number": "920-948-5735",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "GROUPER",
        "first_name": "SHARON",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2008-10-08",
        "last_updated": "2026-01-28",
        "certification_date": "2026-01-28",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207L00000X",
            "taxonomy_group": "",
            "desc": "Anesthesiology",
            "state": "WI",
            "license": "75221",
            "primary": false
        },
        {
            "code": "207L00000X",
            "taxonomy_group": "",
            "desc": "Anesthesiology",
            "state": "IL",
            "license": "036.121728",
            "primary": false
        },
        {
            "code": "207L00000X",
            "taxonomy_group": "",
            "desc": "Anesthesiology",
            "state": "IN",
            "license": "01085812A",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "sgrouper318461@direct.myadvocateaurora.org",
            "affiliation": "N",
            "use": "DIRECT",
            "useDescription": "Direct",
            "address_1": "10400 75th St",
            "city": "Kenosha",
            "state": "WI",
            "country_code": "US",
            "postal_code": "531427884",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "endpointType": "FHIR",
            "endpointTypeDescription": "FHIR URL",
            "endpoint": "https://EpicFHIR.aurora.org/FHIR/MYAURORA/api/FHIR/DSTU2/",
            "affiliation": "N",
            "address_1": "10400 75th St",
            "city": "Kenosha",
            "state": "WI",
            "country_code": "US",
            "postal_code": "531427884",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

Other providers in East Chicago, IN

Sources for this page

Verify at the official NPI Registry.