Raymond Charles Tan, MD
NPI 1104809946ActiveIndividual· Radiology, Radiation Oncology· Fresno, CA
Radiology, Radiation Oncology (MD) in Fresno, California, trained at Tufts University School of Medicine (class of 1999). 155 Medicare patients in 2024, $105,250 paid; nearly all of their 203 Part D prescriptions were generic (94%). Astrazeneca Pharmaceuticals LP was the largest of 4 companies reporting payments in 2025, $207.22 in all, mostly food and beverage.
Overview
| NPI | 1104809946 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Nov 25, 2005 |
| Last updated in NPPES | Feb 24, 2017 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Radiology, Radiation Oncology Primary | 2085R0001X | A73252 | 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 - Radiation Oncology (CA); Practitioner - Radiation Oncology (OR) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 155 |
|---|---|
| Services billed | 1,470 across 25 procedure codes |
| Paid by Medicare | $105,250 |
Part D prescriptions in 2024
| Prescriptions (claims) | 203 · 241 30-day fills |
|---|---|
| Patients | 60 |
| Total drug cost | $10,986 |
| Generic share | 94% of claims |
Education and affiliations
| Medical school | Tufts University School of Medicine |
|---|---|
| Graduation year | 1999 |
| Medicare specialty | Radiation Oncology |
Medical group
- Meridian Park Radiation Oncolog Center IncTualatin, OR · 3 clinicians
Hospital affiliation
- Legacy Meridian Park Medical CenterTualatin, OR
Industry payments (Open Payments)
- 2025$207.22 · 4 payments from 4 companies
- 2024$541.01 · 20 payments from 14 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $125.00 | 1 |
| Boston Scientific Corporation | $32.50 | 1 |
| Otsuka America Pharmaceutical, Inc. | $28.57 | 1 |
| Novocure Inc. | $21.15 | 1 |
What the 2025 payments were for
- Food and Beverage$207.22 · 4 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Radiology, Radiation Oncology providers in Fresno
- 1659381549
- 1962464586
- 1992021562
- 1477802262
- 1821320011
- 1760776744
- 1316901663
- 1588639702
- 1619946753
- 1669455390
- 1588639710
- 1427377431