Yazhini Vallatharasu, MD
NPI 1508207895ActiveIndividual· 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: $1,163,630 for 501 claims, against $162,737 paid for services in 2024. Pfizer Inc. was the largest of 6 companies reporting payments in 2025, $5,376 in all, mostly consulting fees. Lists Thedacare Medical Center - New London and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1508207895 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jul 15, 2013 |
| Last updated in NPPES | Sep 9, 2019 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | 62904 | WI |
| Internal Medicine | 207R00000X | 6290420 | WI |
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 - Hematology/Oncology (WI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 174 |
|---|---|
| Services billed | 1,350 across 54 procedure codes |
| Paid by Medicare | $162,737 |
Part D prescriptions in 2024
| Prescriptions (claims) | 501 · 670 30-day fills |
|---|---|
| Patients | 141 |
| Total drug cost | $1,163,630 |
| Generic share | 74% of claims |
Education and affiliations
| Graduation year | 2012 |
|---|---|
| Medicare specialty | Hematology/Oncology |
| Secondary specialties | Internal Medicine |
Medical group
- Thedacare, IncorporatedWaupaca, WI · 647 clinicians
Hospital affiliations
- Thedacare Medical Center - New LondonNew London, WI
- Thedacare Medical Center - ShawanoShawano, WI
- Thedacare Medical Center-WaupacaWaupaca, WI
- Thedacare Regional Med Ctr - NeenahNeenah, WI
- Thedacare Regional Medical Center - Appleton IncAppleton, WI
Industry payments (Open Payments)
- 2025$5,376 · 9 payments from 6 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Pfizer Inc. | $4,166 | 4 |
| Incyte Corporation | $860.00 | 1 |
| Karyopharm Therapeutics Inc. | $125.50 | 1 |
| Genmab U.S., Inc. | $101.77 | 1 |
| Amgen Inc. | $101.41 | 1 |
What the 2025 payments were for
- Consulting Fee$4,785 · 3 payments
- Food and Beverage$436.74 · 5 payments
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$154.00 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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