Daniel Richard Lewis, M.D.
NPI 1598749079ActiveIndividual· Internal Medicine, Hematology & Oncology· San Luis Obispo, CA
Internal Medicine, Hematology & Oncology (M.D.) in San Luis Obispo, California, trained at Oregon Health Sciences University School of Medicine (class of 1978). Their prescriptions cost Medicare Part D more than their services did: $1,552,848 for 803 claims, against $67,160 paid for services in 2024. Janssen Biotech, Inc. was the largest of 32 companies reporting payments in 2025, $1,455 in all, mostly food and beverage.
Overview
| NPI | 1598749079 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Nov 30, 2005 |
| Last updated in NPPES | Nov 2, 2023 |
| Certified by provider | Nov 2, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | G57020 | CA |
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 | 184 |
|---|---|
| Services billed | 690 across 12 procedure codes |
| Paid by Medicare | $67,160 |
Part D prescriptions in 2024
| Prescriptions (claims) | 803 · 1,331 30-day fills |
|---|---|
| Patients | 85 |
| Total drug cost | $1,552,848 |
| Generic share | 81% of claims |
Education and affiliations
| Medical school | Oregon Health Sciences University School of Medicine |
|---|---|
| Graduation year | 1978 |
| Medicare specialty | Hematology/Oncology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Pacific Central Coast Health CentersTempleton, CA · 253 clinicians
Hospital affiliations
- Adventist Health Sierra VistaSan Luis Obispo, CA
- Adventist Health Twin CitiesTempleton, CA
- French Hospital Medical CenterSan Luis Obispo, CA
- Marian Regional Medical CenterSanta Maria, CA
Other facilities
- Central Coast Home Health IncHome health agency · San Luis Obispo, CA
- Central Coast Home Health, IncHospice · San Luis Obispo, CA
Industry payments (Open Payments)
- 2025$1,455 · 72 payments from 32 companies
- 2024$1,213 · 61 payments from 25 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Janssen Biotech, Inc. | $170.03 | 9 |
| Genentech USA, Inc. | $109.78 | 5 |
| Novartis Pharmaceuticals Corporation | $103.68 | 5 |
| Takeda Pharmaceuticals U.S.A., Inc. | $102.53 | 5 |
| Astrazeneca Pharmaceuticals LP | $81.10 | 4 |
What the 2025 payments were for
- Food and Beverage$1,455 · 72 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All Internal Medicine, Hematology & Oncology providers in California →