Yacki Hayashi-Tanner, D.O.
NPI 1487031894ActiveIndividual· Internal Medicine, Hematology & Oncology· La Crosse, WI
Internal Medicine, Hematology & Oncology (D.O.) with Gundersen Lutheran Medical Center Inc, practicing in La Crosse, Wisconsin. Their prescriptions cost Medicare Part D more than their services did: $2,514,009 for 423 claims, against $11,965 paid for services in 2024. Lists Gundersen Boscobel Area Hospital and Clinics and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1487031894 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | D.O. |
| Sole proprietor | No |
| NPI issued | May 5, 2015 |
| Last updated in NPPES | Jul 17, 2024 |
| Certified by provider | Jul 17, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | 70667 | WI |
| Internal Medicine | 207R00000X | 70067 | WI |
| Student in an Organized Health Care Education/Training Program | 390200000X | — | — |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Hematology/Oncology (MN); Practitioner - Internal Medicine (WI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 74 |
|---|---|
| Services billed | 188 across 11 procedure codes |
| Paid by Medicare | $11,965 |
Part D prescriptions in 2024
| Prescriptions (claims) | 423 · 541 30-day fills |
|---|---|
| Patients | 71 |
| Total drug cost | $2,514,009 |
| Generic share | 67% of claims |
Education and affiliations
| Graduation year | 2017 |
|---|---|
| Medicare specialty | Hematology/Oncology |
| Telehealth | Offers telehealth |
Medical group
- Gundersen Lutheran Medical Center IncLa Crosse, WI · 895 clinicians
Hospital affiliations
- Gundersen Boscobel Area Hospital and ClinicsBoscobel, WI
- Gundersen Lutheran Medical CenterLa Crosse, WI
- Gundersen St Josephs Hospital and ClinicsHillsboro, WI
- Gundersen Tri-County Hospital & ClinicsWhitehall, WI
- Vernon Memorial HospitalViroqua, WI
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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