David Arthur Lewis, M.D.
NPI 1316017858ActiveIndividual· Internal Medicine· Mountain View, CA
Internal Medicine (M.D.) in Mountain View, California, trained at University of Southern California Keck School of Medicine (class of 1974). Their prescriptions cost Medicare Part D more than their services did: $195,333 for 2,766 claims, against $106,490 paid for services in 2024.
Overview
| NPI | 1316017858 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Nov 9, 2006 |
| Last updated in NPPES | Jul 8, 2007 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | G29804 | 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 | 655 |
|---|---|
| Services billed | 2,144 across 22 procedure codes |
| Paid by Medicare | $106,490 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,766 · 6,360 30-day fills |
|---|---|
| Patients | 275 |
| Total drug cost | $195,333 |
| Generic share | 89% of claims |
Education and affiliations
| Medical school | University of Southern California Keck School of Medicine |
|---|---|
| Graduation year | 1974 |
| Medicare specialty | Internal Medicine |
Hospital affiliation
- El Camino HealthMountain View, CA
Other facilities
- Pathways Home Health and HospiceHome health agency · Sunnyvale, CA
- Prohealth Home Care, IncHome health agency · San Jose, CA
- Strive Home Health, LLCHome health agency · Livermore, CA
- Sutter Care at HomeHome health agency · Saratoga, 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 134 internal medicine physicians in Mountain View · All internal medicine physicians in California