Active NPI
Sharon Grouper, MD
- Anesthesiology Physician
- East Chicago, IN
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Anesthesiology Physician
- License
- 01085812A
- 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
Registry information is reported by the provider to CMS and is not verified. About this source
Specialties & licenses 3
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| 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
| Type | Endpoint | Use | Affiliation |
|---|---|---|---|
| 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, IN
- Eligible to order & refer
- Part B services: Yes
- Medical equipment: Yes
- Home health: Yes
- Power mobility devices: Yes
- Hospice: Yes
Enrollment records 3
Care Compare profile
Medicare Care Compare- Specialty
- Anesthesiology
- Education
- Other, 2004
- Medicare assignment
- Accepts the Medicare-approved amount as payment in full
- Group practices
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
- Loyola University Medical Center
- Franciscan Health Michigan City
- Ascension SE Wisconsin Hospital
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Doctor of Medicine
State licenses
| License | State | Type | Specialty |
|---|---|---|---|
| 036.121728 | IL | MD | Anesthesiology Physician |
| 01085812A | IN | MD | Anesthesiology Physician |
| 75221 | WI | MD | Anesthesiology Physician |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Loyola University Medical Center | Current | Accepting new patients | |
| Chicago Surgical Clinic, LTD. | Current | Accepting new patients | |
| Vituity-Wisconsin Anesthesia SC | Anesthesiology | Current | Accepting new patients |
| Barrington Anesthesia Associates, SC | Anesthesiology | Current | Accepting new patients |
| Vituity-Wisconsin Anesthesia SC | Anesthesiology | Current | Accepting new patients |
| Mobile Anesthesiologists Chicago LLC | Anesthesiology | Current | Accepting new patients |
| Associated Surgical Center LLC | Current | Accepting new patients | |
| Nwi Medical Associates , LLC | Anesthesiology | Current | Accepting new patients |
| Vituity-Wisconsin Anesthesia SC | Anesthesiology | Current | Accepting new patients |
| La Porte County Anesthesia Associates LLC | Anesthesiology | Current | Accepting new patients |
| Loyola University Medical Center | Current | 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.
-
- Anesthesiology Physician
- Michigan City, IN
- NPI 1477553634
-
- Anesthesiology Physician
- Munster, IN
- NPI 1760182554
-
- Anesthesiology Physician
- Pleasant Prairie, WI
- NPI 1821831975
-
- Ambulatory Surgical Clinic/Center
- Arlington Heights, IL
- NPI 1235683798
-
- Anesthesiology Physician
- Barrington, IL
- NPI 1811168818
-
- Surgery Physician
- Arlington Heights, IL
- NPI 1336174291
-
- General Practice Physician
- Maywood, IL
- NPI 1336159961
-
- Community/Retail Pharmacy
- Maywood, IL
- NPI 1184789299
-
- Anesthesiology Physician
- Rosemont, IL
- NPI 1396887774
-
- Anesthesiology Physician
- Brookfield, WI
- NPI 1558195719
-
- Anesthesiology Physician
- Milwaukee, WI
- NPI 1801620067
Hospital & facility affiliations 7
Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.
-
- General Acute Care Hospital
- La Porte, IN
- NPI 1679336747
-
- General Acute Care Hospital
- Michigan City, IN
- NPI 1710051941
-
- General Acute Care Hospital
- East Chicago, IN
- NPI 1689776882
-
- General Acute Care Hospital
- Milwaukee, WI
- NPI 1427007384
-
- Rehabilitation Hospital Unit
- Brookfield, WI
- NPI 1861417362
-
- General Acute Care Hospital
- Maywood, IL
- NPI 1376521575
-
- General Acute Care Hospital
- Tinley Park, IL
- NPI 1427752013
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
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jan 28, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
- Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.