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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

MS. TONYA R. ADAMIAK M.D.
NPI 1174570659
Pediatrics - Pediatric Gastroenterology in Sioux Falls, SD

Active since May 28, 2006PECOS EnrolledAccepts Medicare Assignment
76.69/100
CMS Quality Rating
911 E 20TH ST STE 510, SIOUX FALLS, SD 57105(605) 322-3666(605) 504-9920 Get Directions Write a Review

NPPES record last updated: August 5, 2026. Verified against the NPPES registry weekly; last sync: August 23, 2026.

About Ms. Tonya R. Adamiak M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MS. TONYA R. ADAMIAK M.D. (NPI 1174570659) is an individual pediatric gastroenterology provider in Sioux Falls, South Dakota, licensed in South Dakota (7451) and active in the NPI registry since May 2006. She is enrolled in Medicare PECOS and is a graduate of University Of Minnesota Medical School (2003).

NPPES Registry Identity

NPI1174570659
Entity TypeIndividualFemale
Primary Taxonomy2080P0206X
Provider Legal NameMS. TONYA R. ADAMIAKCredential: M.D.
Location Address911 E 20TH ST STE 510Sioux Falls, SD 57105-1046
Mailing Address911 E 20th St Ste 510Sioux Falls, SD 57105-1046 · (605) 322-3666 · Fax (605) 504-9920
Phone(605) 322-3666
Fax(605) 504-9920
Sole ProprietorNo
Medical School CMSUniversity Of Minnesota Medical SchoolGraduated 2003
Enumeration DateMay 28, 2006
Last NPPES UpdateAugust 5, 2026
NPPES CertifiedAugust 5, 2026
✔ NPI 1174570659 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatrics · Pediatric GastroenterologyAllopathic & Osteopathic Physicians
Taxonomy Code2080P0206X
Licenses✔ Licensed in SD · 7451✔ Licensed in WI · 49304
Definition
A pediatrician who specializes in the diagnosis and treatment of diseases of the digestive systems of infants, children and adolescents. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using lighted scopes to see internal organs.
911 E 20TH ST STE 510, Sioux Falls, SD 57105
Open in Google Maps ↗

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Medica, Oscar Insurance Company, Sanford Health Plan and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Ms. Tonya R. Adamiak M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID446304364
PECOS Enrollment IDI20090812000199
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 57105 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$126.78 typical visit price
range $55.52 – $167.23
Typical copayment $31.69 (range $13.88 – $41.80)
Most-billed visit code 99204
Established Patient
$97.88 typical visit price
range $18.08 – $137.08
Typical copayment $24.47 (range $4.52 – $34.27)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

76.69/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality78.56
Promoting Interoperability99
Improvement Activities40
Cost44.56

Other Providers at the Same Location NPPES

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MELISSA JENSEN MD
Pediatrics
911 E 20TH ST STE 510
SIOUX FALLS, SD 57105
Minnehaha County (605) 322-3666

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Tonya Adamiak's NPI number?

The NPI number for Tonya Adamiak is 1174570659. It was assigned to this individual provider in the NPPES registry on May 28, 2006.

Where is Tonya Adamiak located?

Tonya Adamiak practices at 911 E 20th St Ste 510, Sioux Falls, SD 57105. The listed phone number is (605) 322-3666.

What is Tonya Adamiak's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Gastroenterology, with taxonomy code 2080P0206X.

Is Tonya Adamiak enrolled in Medicare?

Yes. Tonya Adamiak is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does Tonya Adamiak accept?

Health plans from Medica, Oscar Insurance Company, Sanford Health Plan and Security Health Plan list Tonya Adamiak as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Tonya Adamiak was last updated on August 5, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 21 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.