David A. Olson, MD
NPI 1346252525ActiveIndividual· Internal Medicine· Oakdale, CA
Internal Medicine (MD) in Oakdale, California, trained at Jefferson Medical College of Thomas Jefferson University (class of 1976). Their prescriptions cost Medicare Part D more than their services did: $1,473,294 for 4,782 claims, against $165,088 paid for services in 2024. Astellas Pharma US Inc was the largest of 3 companies reporting payments in 2025, $80.17 in all, mostly food and beverage.
Overview
| NPI | 1346252525 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Aug 13, 2006 |
| Last updated in NPPES | Feb 23, 2016 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | G40340 | CA |
| Internal Medicine, Infectious Disease | 207RI0200X | G403400 | 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 - Internal Medicine (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 370 |
|---|---|
| Services billed | 2,178 across 34 procedure codes |
| Paid by Medicare | $165,088 |
Part D prescriptions in 2024
| Prescriptions (claims) | 4,782 · 9,087 30-day fills |
|---|---|
| Patients | 352 |
| Total drug cost | $1,473,294 |
| Generic share | 83% of claims |
Education and affiliations
| Medical school | Jefferson Medical College of Thomas Jefferson University |
|---|---|
| Graduation year | 1976 |
| Medicare specialty | Internal Medicine |
| Secondary specialties | Infectious Disease |
Medical group
- David A Olson MD A Professional CorporationOakdale, CA · 2 clinicians
Hospital affiliations
- Adventist Health SonoraSonora, CA
- Doctors Medical CenterModesto, CA
- Memorial Medical CenterModesto, CA
- Oak Valley Hospital DistrictOakdale, CA
Other facilities
- Careone Home Health and Hospice, IncHome health agency · Salida, CA
- Sutter Care at HomeHome health agency · Salida, CA
Industry payments (Open Payments)
- 2025$80.17 · 3 payments from 3 companies
- 2024$52.55 · 2 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astellas Pharma US Inc | $36.99 | 1 |
| Gilead Sciences, Inc. | $22.19 | 1 |
| Viiv Healthcare Company | $20.99 | 1 |
What the 2025 payments were for
- Food and Beverage$43.18 · 2 payments
- Education$36.99 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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