Individual provider Active NPI

Tonya R. Adamiak, M.D.

  • Pediatric Gastroenterology Physician
  • Sioux Falls, SD
National Provider Identifier
1174570659
Registry record updated Aug 5, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Pediatric Gastroenterology PhysicianTaxonomy code 2080P0206X
License
7451 Issued in SD
Practice address
911 E 20TH St Ste 510
Sioux Falls, SD 57105-1046
Phone
(605) 322-3666
Fax
(605) 504-9920
NPI assigned
May 28, 2006
Last updated
Aug 5, 2026By the provider in NPPES
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Aug 5, 2026

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Pediatric Gastroenterology Physician 2080P0206X 49304 WI
Pediatric Gastroenterology Physician 2080P0206X 7451 SD Primary

Addresses

Primary practice location

911 E 20TH St Ste 510
Sioux Falls, SD 57105-1046

Mailing address

911 E 20TH St Ste 510
Sioux Falls, SD 57105-1046
Phone (605) 322-3666

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
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20090812000199 SD Practitioner - Pediatric Medicine 0446304364 Reassigns benefits to 2 organizations

Care Compare profile

Medicare Care Compare
Specialty
Pediatric Medicine
Education
University of Minnesota Medical School, 2003
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Sanford Medical CenterGroup PAC ID 8325950215, 847 clinicians

Practice addresses (Care Compare)

1600 W 22ND St
Sioux Falls, SD 57105-1521
Phone (605) 312-1000

4405 E 26TH St
Sioux Falls, SD 57103-4187
Phone (605) 332-2883

Merit-based Incentive Payment System (MIPS)

Final score
84.78 of 100Reported as group
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

State licenses

LicenseStateTypeSpecialty
7451SDMDPediatric Gastroenterology Physician
49304WIMDPediatric Gastroenterology Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Sanford Medical Center CurrentSince Nov 18, 2019 Accepting new patients
Sanford Clinic CurrentSince Jul 1, 2009 Accepting new patients
Sanford Clinic Current Accepting new patients
Sanford Clinic CurrentSince Jul 1, 2009 Accepting new patients
Sanford Clinic Past Accepting new patients
Sanford Clinic Past Accepting new patients

Locations

525 N Foster St
Mitchell, SD 57301
Phone (605) 995-2000

1600 W 22nd St
Sioux Falls, SD 57105
Phone (605) 312-1000

4405 E 26th St
Sioux Falls, SD 57103
Phone (605) 328-9000

Organizations & group practices 6

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

NPI Registry JSON

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

{
    "created_epoch": "1148774400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1785888000000",
    "number": "1174570659",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "911 E 20TH ST STE 510",
            "city": "SIOUX FALLS",
            "state": "SD",
            "postal_code": "571051046",
            "telephone_number": "605-322-3666",
            "fax_number": "605-504-9920"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "911 E 20TH ST STE 510",
            "city": "SIOUX FALLS",
            "state": "SD",
            "postal_code": "571051046",
            "telephone_number": "605-322-3666",
            "fax_number": "605-504-9920"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "ADAMIAK",
        "first_name": "TONYA",
        "middle_name": "R.",
        "name_prefix": "Ms.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2006-05-28",
        "last_updated": "2026-08-05",
        "certification_date": "2026-08-05",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2080P0206X",
            "taxonomy_group": "",
            "desc": "Pediatrics, Pediatric Gastroenterology",
            "state": "WI",
            "license": "49304",
            "primary": false
        },
        {
            "code": "2080P0206X",
            "taxonomy_group": "",
            "desc": "Pediatrics, Pediatric Gastroenterology",
            "state": "SD",
            "license": "7451",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Sioux Falls, SD

Sources for this page

Verify at the official NPI Registry.