Steven P. McCarthy, M.D.
NPI 1497765309ActiveIndividual· Internal Medicine· Thousand Oaks, CA
Internal Medicine (M.D.) in Thousand Oaks, California, trained at University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) (class of 1996). Their prescriptions cost Medicare Part D more than their services did: $353,725 for 5,528 claims, against $110,891 paid for services in 2024.
Overview
| NPI | 1497765309 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Aug 9, 2006 |
| Last updated in NPPES | Oct 29, 2020 |
| Certified by provider | Oct 29, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 036-100825 | IL |
| Internal Medicine | 207R00000X | C168171 | 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 - Internal Medicine (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 589 |
|---|---|
| Services billed | 3,175 across 33 procedure codes |
| Paid by Medicare | $110,891 |
Part D prescriptions in 2024
| Prescriptions (claims) | 5,528 · 12,318 30-day fills |
|---|---|
| Patients | 541 |
| Total drug cost | $353,725 |
| Generic share | 92% of claims |
Education and affiliations
| Medical school | University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) |
|---|---|
| Graduation year | 1996 |
| Medicare specialty | Internal Medicine |
| Secondary specialties | Hospitalist |
| Telehealth | Offers telehealth |
Medical group
- The Regents of the University of CaliforniaSanta Monica, CA · 1,462 clinicians
Hospital affiliations
- Los Robles Hospital & Medical CenterThousand Oaks, CA
- Ronald Reagan UCLA Medical CenterLos Angeles, CA
- UCLA West Valley Medical CenterWest Hills, CA
Other facilities
- Access Tlc Home Health CareHome health agency · San Fernando, CA
- Assisted Home CareHome health agency · Mission Hills, CA
- Divine Care Home Health Services IncHome health agency · Simi Valley, CA
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 90 internal medicine physicians in Thousand Oaks · All internal medicine physicians in California