Erin Chamberlain, M.D.
NPI 1902249469ActiveIndividual· 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 2013). In 2024 Medicare paid $4,741,423 for 794 patients, and Part D covered 867 of their prescriptions, 80% of them generic. Merck Sharp & Dohme LLC was the largest of 4 companies reporting payments in 2024, $99.94 in all, mostly food and beverage.
Overview
| NPI | 1902249469 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Apr 15, 2013 |
| Last updated in NPPES | Mar 7, 2023 |
| Certified by provider | Nov 2, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | A142151 | 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 | 794 |
|---|---|
| Services billed | 209,698 across 150 procedure codes |
| Paid by Medicare | $4,741,423 |
Part D prescriptions in 2024
| Prescriptions (claims) | 867 · 1,403 30-day fills |
|---|---|
| Patients | 209 |
| Total drug cost | $1,916,934 |
| Generic share | 80% of claims |
Education and affiliations
| Medical school | Oregon Health Sciences University School of Medicine |
|---|---|
| Graduation year | 2013 |
| Medicare specialty | Hematology/Oncology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- The Regents of the University of CaliforniaSanta Monica, CA · 1,462 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
- Ronald Reagan UCLA Medical CenterLos Angeles, CA
Other facilities
- Central Coast Home Health IncHome health agency · San Luis Obispo, CA
Industry payments (Open Payments)
- 2024$99.94 · 5 payments from 4 companies
Top paying companies in 2024
| Company | Amount | Payments |
|---|---|---|
| Merck Sharp & Dohme LLC | $37.02 | 2 |
| E.R. Squibb & Sons, L.L.C. | $24.63 | 1 |
| Medtronic, Inc. | $21.91 | 1 |
| Pfizer Inc. | $16.38 | 1 |
What the 2024 payments were for
- Food and Beverage$99.94 · 5 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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