Active NPI
Ellen Elizabeth Hopper, MD
- Obstetrics & Gynecology Physician
- Brookings, SD
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Obstetrics & Gynecology Physician
- License
- 8120
- Practice address
- 400 22ND Ave
Brookings, SD 57006-2497 - Phone
- (605) 697-9500
- NPI assigned
- Jun 22, 2007
- Sex
- Female
- Sole proprietor
- No
NPPES NPI Registry
Registry information is reported by the provider to CMS and is not verified. About this source
Specialties & licenses 1
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Obstetrics & Gynecology Physician | 207V00000X | 8120 | SD | Primary |
Addresses
Primary practice location
400 22ND Ave
Brookings, SD 57006-2497
Mailing address
PO Box 5074
Sioux Falls, SD 57117-5074
Other names 1
- Ellen Elizabeth Gormley
Electronic endpoints 1
| Type | Endpoint | Use | Affiliation |
|---|---|---|---|
| Direct Messaging Address | ehopper7289187@direct.sanfordhealth.org |
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Enrolled in SD
- Eligible to order & refer
- Part B services: Yes
- Medical equipment: Yes
- Home health: Yes
- Power mobility devices: Yes
- Hospice: Yes
Enrollment records 1
Care Compare profile
Medicare Care Compare- Specialty
- Obstetrics/Gynecology
- Education
- Other, 2007
- Medicare assignment
- Accepts the Medicare-approved amount as payment in full
- Group practices
Practice addresses (Care Compare)
401 9TH Ave NW
Watertown, SD 57201-1548
Phone (605) 886-9317
4405 E 26TH St
Sioux Falls, SD 57103-4187
Phone (605) 332-2883
901 4TH St NW
Watertown, SD 57201-1558
Phone (605) 886-8471
Merit-based Incentive Payment System (MIPS)
- Final score
- 84.78 of 100
- Quality
- 78.77
- Promoting interoperability
- 100
- Improvement activities
- 40
- Cost
- 70.49
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Doctor of Medicine
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Sanford Clinic | Current | Accepting new patients | |
| Sanford Health Network | Current | Accepting new patients | |
| Sanford Health Network | Current | Accepting new patients | |
| Sanford Medical Center | Obstetrics & Gynecology | Current | Accepting new patients |
| Sanford Health Network | Current | Accepting new patients | |
| Sanford Clinic | Current | Accepting new patients | |
| Sanford Clinic | Current | Accepting new patients | |
| Sanford Clinic | Past | Accepting new patients | |
| Prairie Lakes Health Care System Inc | Past | Accepting new patients |
Locations
400 22nd Ave
Brookings, SD 57006
Phone (605) 692-6236
300 22nd Ave
Brookings, SD 57006
Phone (605) 692-6351
701 3rd Ave S
Clear Lake, SD 57226
Phone (605) 874-2141
4405 E 26th St
Sioux Falls, SD 57103
Phone (605) 328-9000
1305 W 18th St
Sioux Falls, SD 57105
Phone (605) 312-7300
20 S Plum St
Vermillion, SD 57069
Phone (605) 624-2611
901 4th St NW
Watertown, SD 57201
Phone (605) 882-8780
703 S Broadway
Watertown, SD 57201
Phone (605) 882-1852
Interoperability endpoints
- ehopper7289187@direct.sanfordhealth.org
Organizations & group practices 10
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.
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-
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NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1182470400000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1770940800000",
"number": "1487850913",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "PO BOX 5074",
"city": "SIOUX FALLS",
"state": "SD",
"postal_code": "571175074"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "400 22ND AVE",
"city": "BROOKINGS",
"state": "SD",
"postal_code": "570062497",
"telephone_number": "605-697-9500"
}
],
"practiceLocations": [],
"basic": {
"last_name": "HOPPER",
"first_name": "ELLEN",
"middle_name": "ELIZABETH",
"credential": "MD",
"sole_proprietor": "NO",
"sex": "F",
"enumeration_date": "2007-06-22",
"last_updated": "2026-02-13",
"certification_date": "2026-02-13",
"status": "A"
},
"taxonomies": [
{
"code": "207V00000X",
"taxonomy_group": "",
"desc": "Obstetrics & Gynecology",
"state": "SD",
"license": "8120",
"primary": true
}
],
"identifiers": [],
"endpoints": [
{
"endpointType": "DIRECT",
"endpointTypeDescription": "Direct Messaging Address",
"endpoint": "ehopper7289187@direct.sanfordhealth.org",
"affiliation": "N",
"address_1": "901 4th St NW",
"city": "Watertown",
"state": "SD",
"country_code": "US",
"postal_code": "572011558",
"country_name": "United States",
"address_type": "DOM"
}
],
"other_names": [
{
"first_name": "ELLEN",
"last_name": "GORMLEY",
"middle_name": "ELIZABETH",
"credential": "MD",
"code": "1",
"type": "Former Name"
}
]
}
Other providers in Brookings, SD
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Feb 13, 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.