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DR. KAROLINA STACK M.D.
NPI 1053842443
Pediatrics in Oshkosh, WI

Active since March 27, 2017PECOS EnrolledAccepts Medicare Assignment
2700 W 9TH AVE STE 211, OSHKOSH, WI 54904(920) 223-8000 Get Directions Write a Review

NPPES record last updated: June 30, 2025. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Jun 30, 2025, Dec 7, 2021, Jun 29, 2020 and 2 more (5 updates tracked since 2017).

About Dr. Karolina Stack M.d. NPPES

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

DR. KAROLINA STACK M.D. (NPI 1053842443) is an individual pediatrics provider in Oshkosh, Wisconsin, licensed in Wisconsin (83243) and active in the NPI registry since March 2017. She is enrolled in Medicare PECOS and is a graduate of Loyola University Of Chicago, Stritch School Of Medicine (2017).

NPPES Registry Identity

NPI1053842443
Entity TypeIndividualFemale
Primary Taxonomy208000000X
Provider Legal NameDR. KAROLINA STACKCredential: M.D.
Location Address2700 W 9TH AVE STE 211Oshkosh, WI 54904-7865
Mailing Address2700 W 9th Ave Ste 211Oshkosh, WI 54904-7865 · (920) 738-2000
Phone(920) 223-8000
Sole ProprietorYes
Medical School CMSLoyola University Of Chicago, Stritch School Of MedicineGraduated 2017
Enumeration DateMarch 27, 2017
Last NPPES UpdateJune 30, 20255 updates tracked since enumeration
NPPES CertifiedJune 30, 2025
✔ NPI 1053842443 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians
Taxonomy Code208000000X
Licenses✔ Licensed in WI · 83243✔ Licensed in IL · 1053842243✔ Licensed in IL · 036.151998
Definition
A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development.
2700 W 9TH AVE STE 211, Oshkosh, WI 54904
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Other Names 1

Former Name (1)Karolina Sabaliauskaite Md

Other Identifiers 1

Medicaid100273308WI

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, Network Health.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

Dr. Karolina Stack 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 ID4082055421
PECOS Enrollment IDI20240515004175
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 54904 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
$82.92 typical visit price
range $53.90 – $163.24
Typical copayment $20.73 (range $13.47 – $40.81)
Most-billed visit code 99203
Established Patient
$95.41 typical visit price
range $17.40 – $133.76
Typical copayment $23.85 (range $4.35 – $33.44)
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.

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 Karolina Stack's NPI number?

The NPI number for Karolina Stack is 1053842443. It was assigned to this individual provider in the NPPES registry on March 27, 2017. The provider is also known as Karolina Sabaliauskaite MD.

Where is Karolina Stack located?

Karolina Stack practices at 2700 W 9th Ave Ste 211, Oshkosh, WI 54904. The listed phone number is (920) 223-8000.

What is Karolina Stack's specialty?

The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.

Is Karolina Stack enrolled in Medicare?

Yes. Karolina Stack 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 Karolina Stack accept?

Health plans from Anthem Blue Cross and Blue Shield and Network Health list Karolina Stack 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 Karolina Stack was last updated on June 30, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 months 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.