Thomas J. Spillane, MD
NPI 1477558435ActiveIndividual· Internal Medicine, Medical Oncology· San Luis Obispo, CA
Internal Medicine, Medical Oncology (MD) in San Luis Obispo, California, trained at University of California, Davis School of Medicine (class of 1988). Their prescriptions cost Medicare Part D more than their services did: $1,272,898 for 1,021 claims, against $355,612 paid for services in 2024. Astrazeneca Pharmaceuticals LP was the largest of 58 companies reporting payments in 2025, $7,854 in all, mostly food and beverage.
Overview
| NPI | 1477558435 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jun 16, 2005 |
| Last updated in NPPES | Jun 30, 2026 |
| Certified by provider | Jun 30, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Medical Oncology Primary | 207RX0202X | G79734 | 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 | 860 |
|---|---|
| Services billed | 3,622 across 12 procedure codes |
| Paid by Medicare | $355,612 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,021 · 1,598 30-day fills |
|---|---|
| Patients | 256 |
| Total drug cost | $1,272,898 |
| Generic share | 82% of claims |
Education and affiliations
| Medical school | University of California, Davis School of Medicine |
|---|---|
| Graduation year | 1988 |
| Medicare specialty | Medical Oncology |
| Secondary specialties | Hematology/Oncology |
| Telehealth | Offers telehealth |
Medical groups
- Pacific Central Coast Health CentersTempleton, CA · 253 clinicians
- David B. HammerTempleton, CA · 123 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
- Dignity Health Home HealthHome health agency · Santa Maria, CA
Industry payments (Open Payments)
- 2025$7,854 · 266 payments from 58 companies
- 2024$7,697 · 295 payments from 50 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $2,010 | 19 |
| Janssen Biotech, Inc. | $548.61 | 15 |
| Exelixis Inc. | $396.27 | 13 |
| Novartis Pharmaceuticals Corporation | $345.85 | 20 |
| Pfizer Inc. | $315.59 | 18 |
What the 2025 payments were for
- Food and Beverage$6,192 · 264 payments
- Consulting Fee$1,650 · 1 payment
- Education$12.42 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records