Chad Michael Guenther, MD
NPI 1063874758ActiveIndividual· Internal Medicine, Hematology & Oncology· Santa Barbara, CA
Internal Medicine, Hematology & Oncology (MD) in Santa Barbara, California, trained at University of Wisconsin School of Medicine (class of 2016). In 2024 Medicare paid $1,997,169 for 349 patients, and Part D covered 691 of their prescriptions, 82% of them generic. Pfizer Inc. was the largest of 2 companies reporting payments in 2025, $45.92 in all, mostly education.
Overview
| NPI | 1063874758 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Mar 22, 2016 |
| Last updated in NPPES | Aug 24, 2023 |
| Certified by provider | Aug 24, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | A184597 | CA |
| Internal Medicine, Hematology & Oncology | 207RH0003X | 73001 | 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 (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 349 |
|---|---|
| Services billed | 96,796 across 120 procedure codes |
| Paid by Medicare | $1,997,169 |
Part D prescriptions in 2024
| Prescriptions (claims) | 691 · 975 30-day fills |
|---|---|
| Patients | 130 |
| Total drug cost | $1,211,603 |
| Generic share | 82% of claims |
Education and affiliations
| Medical school | University of Wisconsin School of Medicine |
|---|---|
| Graduation year | 2016 |
| Medicare specialty | Hematology/Oncology |
| Telehealth | Offers telehealth |
Medical group
- Sansum ClinicSanta Barbara, CA · 320 clinicians
Hospital affiliation
- Santa Barbara Cottage HospitalSanta Barbara, CA
Other facilities
- Vna HealthHome health agency · Santa Barbara, CA
Industry payments (Open Payments)
- 2025$45.92 · 2 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Pfizer Inc. | $30.65 | 1 |
| Daiichi Sankyo Inc. | $15.27 | 1 |
What the 2025 payments were for
- Education$30.65 · 1 payment
- Food and Beverage$15.27 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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