Paul R. Kaesberg, M.D.
NPI 1023084035ActiveIndividual· Internal Medicine, Hematology & Oncology· Sacramento, CA
Internal Medicine, Hematology & Oncology (M.D.) in Sacramento, California, trained at University of Wisconsin School of Medicine (class of 1982). Their prescriptions cost Medicare Part D more than their services did: $3,558,915 for 608 claims, against $76,964 paid for services in 2024. Janssen Biotech, Inc. was the largest of 4 companies reporting payments in 2025, $20,102 in all, mostly speaking and faculty fees.
Overview
| NPI | 1023084035 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Feb 28, 2006 |
| Last updated in NPPES | Aug 29, 2019 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | G88099 | CA |
| Internal Medicine, Medical Oncology | 207RX0202X | 25312 | 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 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Hematology/Oncology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 426 |
|---|---|
| Services billed | 1,612 across 23 procedure codes |
| Paid by Medicare | $76,964 |
Part D prescriptions in 2024
| Prescriptions (claims) | 608 · 821 30-day fills |
|---|---|
| Patients | 110 |
| Total drug cost | $3,558,915 |
| Generic share | 62% of claims |
Education and affiliations
| Medical school | University of Wisconsin School of Medicine |
|---|---|
| Graduation year | 1982 |
| Medicare specialty | Hematology/Oncology |
| Telehealth | Offers telehealth |
Medical group
- Regents of the Univ of CaSacramento, CA · 1,584 clinicians
Hospital affiliations
- Marshall Medical CenterPlacerville, CA
- Mercy Medical Center ReddingRedding, CA
- University of California Davis Medical CenterSacramento, CA
Industry payments (Open Payments)
- 2025$20,102 · 15 payments from 4 companies
- 2024$38,633 · 26 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Janssen Biotech, Inc. | $11,855 | 7 |
| Beone Medicines USA, Inc. | $8,038 | 6 |
| Pfizer Inc. | $175.00 | 1 |
| Celgene Corporation | $34.34 | 1 |
What the 2025 payments were for
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$19,184 · 7 payments
- Food and Beverage$743.26 · 7 payments
- Consulting Fee$175.00 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Internal Medicine, Hematology & Oncology providers in Sacramento
- 1386979722
- 1275869406
- 1528051679
- 1548454713
- 1467459222
- 1851479554
- 1619472693
- 1023249422
- 1164043709
- 1699748707
- 1679651350
- 1326433244
All Internal Medicine, Hematology & Oncology providers in California →