Kamal Kant Singh Abbi, M.D.
NPI 1588827778ActiveIndividual· Internal Medicine, Medical Oncology· Green Bay, WI
Internal Medicine, Medical Oncology (M.D.) with Osf Multi-Specialty Group and 2 other groups, practicing in Green Bay, Wisconsin. Their prescriptions cost Medicare Part D more than their services did: $1,951,167 for 1,477 claims, against $48,122 paid for services in 2024. Vertex Pharmaceuticals Incorporated was the largest of 3 companies reporting payments in 2025, $130.54 in all, mostly food and beverage. Lists Ascension Ne Wisconsin - St Elizabeth Campus and 1 other hospital as hospital affiliations.
Overview
| NPI | 1588827778 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jul 8, 2008 |
| Last updated in NPPES | May 6, 2024 |
| Certified by provider | May 6, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Medical Oncology Primary | 207RX0202X | 65082-20 | 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 - Internal Medicine (MI); Practitioner - Hematology/Oncology (WI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 159 |
|---|---|
| Services billed | 667 across 13 procedure codes |
| Paid by Medicare | $48,122 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,477 · 2,064 30-day fills |
|---|---|
| Patients | 330 |
| Total drug cost | $1,951,167 |
| Generic share | 83% of claims |
Education and affiliations
| Graduation year | 2004 |
|---|---|
| Medicare specialty | Hematology/Oncology |
| Secondary specialties | Internal Medicine |
Medical groups
- Osf Multi-Specialty GroupMorton, IL · 2,114 clinicians
- St Vincent Hospital-Hospital Sisters-Third Order of St FrancisGreen Bay, WI · 603 clinicians
- Ascension Ne Wisconsin, IncAppleton, WI · 19 clinicians
Hospital affiliations
- Ascension Ne Wisconsin - St Elizabeth CampusAppleton, WI
- Osf St Francis Hospital and Medical GroupEscanaba, MI
Industry payments (Open Payments)
- 2025$130.54 · 3 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Vertex Pharmaceuticals Incorporated | $96.18 | 1 |
| Takeda Pharmaceuticals U.S.A., Inc. | $29.55 | 1 |
| Array Biopharma Inc | $4.81 | 1 |
What the 2025 payments were for
- Food and Beverage$130.54 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Internal Medicine, Medical Oncology providers in Green Bay
- 1386800183
- 1285726729
- 1538321252
- 1679538011
- 1053447672
- 1790722619
- 1629067269
- 1124096185
- 1215460068
All Internal Medicine, Medical Oncology providers in Wisconsin →