Leah E. Grossman, MD
NPI 1710542824ActiveIndividual· Internal Medicine· Oxnard, CA
Internal Medicine (MD) with Little Company Hospitalist Medical Group Inc, practicing in Oxnard, California. In 2024 Medicare paid $85,101 for 228 patients, and Part D covered 256 of their prescriptions, 82% of them generic. Organogenesis Inc. reported $27.92 in payments in 2025, mostly food and beverage. Lists Providence Little Co of Mary Med Ctr San Pedro and 1 other hospital as hospital affiliations.
Overview
| NPI | 1710542824 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | May 3, 2019 |
| Last updated in NPPES | Nov 24, 2025 |
| Certified by provider | Nov 24, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | A178486 | 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 | 228 |
|---|---|
| Services billed | 894 across 10 procedure codes |
| Paid by Medicare | $85,101 |
Part D prescriptions in 2024
| Prescriptions (claims) | 256 · 273 30-day fills |
|---|---|
| Patients | 85 |
| Total drug cost | $16,680 |
| Generic share | 82% of claims |
Education and affiliations
| Graduation year | 2019 |
|---|---|
| Medicare specialty | Internal Medicine |
Medical group
- Little Company Hospitalist Medical Group IncTorrance, CA · 28 clinicians
Hospital affiliations
- Providence Little Co of Mary Med Ctr San PedroSan Pedro, CA
- Providence Little Company of Mary Med Ctr TorranceTorrance, CA
Industry payments (Open Payments)
- 2025$27.92 · 1 payment from 1 company
- 2024$122.85 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Organogenesis Inc. | $27.92 | 1 |
What the 2025 payments were for
- Food and Beverage$27.92 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 50 internal medicine physicians in Oxnard · All internal medicine physicians in California