Mark Turrill, M.D.
NPI 1568542314ActiveIndividual· Internal Medicine, Hematology & Oncology· Lakeport, CA
Internal Medicine, Hematology & Oncology (M.D.) in Lakeport, California, trained at Washington University School of Medicine (class of 1988). Their prescriptions cost Medicare Part D more than their services did: $4,853,992 for 2,442 claims, against $2,288,258 paid for services in 2024. Alexion Pharmaceuticals, Inc. was the largest of 6 companies reporting payments in 2025, $133.99 in all, mostly food and beverage.
Overview
| NPI | 1568542314 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Oct 16, 2006 |
| Last updated in NPPES | Nov 11, 2021 |
| Certified by provider | Nov 11, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | G66868 | CA |
| Internal Medicine, Hematology | 207RH0000X | G66868 | CA |
| Internal Medicine, Medical Oncology | 207RX0202X | G66868 | CA |
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 - Medical Oncology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 534 |
|---|---|
| Services billed | 115,734 across 66 procedure codes |
| Paid by Medicare | $2,288,258 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,442 · 3,380 30-day fills |
|---|---|
| Patients | 280 |
| Total drug cost | $4,853,992 |
| Generic share | 84% of claims |
Education and affiliations
| Medical school | Washington University School of Medicine |
|---|---|
| Graduation year | 1988 |
| Medicare specialty | Medical Oncology |
Medical group
- Sutter Bay HospitalsLakeport, CA · 48 clinicians
Hospital affiliations
- Adventist Health ClearlakeClearlake, CA
- Adventist Health Howard MemorialWillits, CA
- Adventist Health Ukiah ValleyUkiah, CA
- Providence Queen of the Valley Medical CenterNapa, CA
- Sutter Lakeside HospitalLakeport, CA
Industry payments (Open Payments)
- 2025$133.99 · 6 payments from 6 companies
- 2024$261.74 · 12 payments from 8 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Alexion Pharmaceuticals, Inc. | $28.72 | 1 |
| Glaxosmithkline, LLC. | $27.85 | 1 |
| Pfizer Inc. | $21.34 | 1 |
| Acrotech Biopharma Inc. | $21.17 | 1 |
| Tersera Therapeutics LLC | $18.39 | 1 |
What the 2025 payments were for
- Food and Beverage$133.99 · 6 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other hematologist-oncologists in Lakeport
- 1619064920