John Frederick Lewison, MD
NPI 1497795678ActiveIndividual· Internal Medicine· South Lake Tahoe, CA
Internal Medicine (MD) in South Lake Tahoe, California, trained at University of Maryland School of Medicine (class of 1993). 133 Medicare patients in 2024, $35,265 paid; nearly all of their 186 Part D prescriptions were generic (90%).
Overview
| NPI | 1497795678 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jun 7, 2006 |
| Last updated in NPPES | Mar 17, 2018 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | G146742 | CA |
| Hospitalist | 208M00000X | G146742 | 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 (AZ); Practitioner - Internal Medicine (CA); Practitioner - Internal Medicine (MT) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 133 |
|---|---|
| Services billed | 502 across 8 procedure codes |
| Paid by Medicare | $35,265 |
Part D prescriptions in 2024
| Prescriptions (claims) | 186 · 193 30-day fills |
|---|---|
| Patients | 65 |
| Total drug cost | $5,682 |
| Generic share | 90% of claims |
Education and affiliations
| Medical school | University of Maryland School of Medicine |
|---|---|
| Graduation year | 1993 |
| Medicare specialty | Internal Medicine |
Medical groups
- St Peters HealthHelena, MT · 199 clinicians
- Superior Specialty Pharmacy of Montana LLCHelena, MT · 2 clinicians
Hospital affiliation
- St Peters HealthHelena, MT
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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