Demytra Krista Lee Mihailidis, MD
NPI 1235441023ActiveIndividual· Internal Medicine, Hematology & Oncology· Appleton, WI
Internal Medicine, Hematology & Oncology (MD) with Thedacare, Incorporated, practicing in Appleton, Wisconsin. Their prescriptions cost Medicare Part D more than their services did: $81,609 for 128 claims, against $10,478 paid for services in 2024. Novartis Pharmaceuticals Corporation was the largest of 2 companies reporting payments in 2025, $626.56 in all, mostly device and supply loans. Lists Thedacare Medical Center - New London and 3 other hospitals as hospital affiliations.
Overview
| NPI | 1235441023 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jul 8, 2010 |
| Last updated in NPPES | Aug 21, 2024 |
| Certified by provider | Aug 21, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | 84135 | WI |
| Internal Medicine, Hematology & Oncology | 207RH0003X | 310018 | NY |
| Internal Medicine, Medical Oncology | 207RX0202X | 310018 | NY |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Medical Oncology (NE); Practitioner - Hematology/Oncology (WI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 34 |
|---|---|
| Services billed | 436 across 24 procedure codes |
| Paid by Medicare | $10,478 |
Part D prescriptions in 2024
| Prescriptions (claims) | 128 · 305 30-day fills |
|---|---|
| Patients | 57 |
| Total drug cost | $81,609 |
| Generic share | 94% of claims |
Education and affiliations
| Graduation year | 2010 |
|---|---|
| Medicare specialty | Hematology/Oncology |
Medical group
- Thedacare, IncorporatedWaupaca, WI · 647 clinicians
Hospital affiliations
- Thedacare Medical Center - New LondonNew London, WI
- Thedacare Medical Center-WaupacaWaupaca, WI
- Thedacare Regional Med Ctr - NeenahNeenah, WI
- Thedacare Regional Medical Center - Appleton IncAppleton, WI
Industry payments (Open Payments)
- 2025$626.56 · 8 payments from 2 companies
- 2024$1,164 · 12 payments from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novartis Pharmaceuticals Corporation | $583.31 | 7 |
| Astrazeneca Pharmaceuticals LP | $43.25 | 1 |
What the 2025 payments were for
- Long term medical supply or device loan$583.31 · 7 payments
- Education$43.25 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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