# Diane C Tsai, MD

Source: https://ourhealthnetwork.com/doctor/diane-tsai-md-1730266966
NPI: 1730266966
Data source: CMS NPI Registry (DAC), refreshed monthly

## Quick facts

Diane C Tsai, MD is a radiation oncology based in Walla Walla, WA practicing at Providence Health And Services - Washington with NPI 1730266966.

## Profile

- Primary specialty: Radiation Oncology
- Credential: MD
- Gender: Female
- Graduation year: 1991
- NPI: 1730266966 ([NPPES record](https://npiregistry.cms.hhs.gov/provider-view/1730266966))

## Practice and contact

- Practice name: Providence Health And Services - Washington
- Address: 401 W Poplar St, Walla Walla, WA, 993622846
- Phone: (509) 897-3320
- Group practice size: 269 members

## Insurance accepted (13 networks)

This provider is in network with the following insurance carriers, based on federal Transparency in Coverage filings and FHIR provider directories:

- [Cigna](https://ourhealthnetwork.com/insurance/cigna) — 17 plans
- [Kaiser Permanente Hawaii](https://ourhealthnetwork.com/insurance/kaiser-permanente-hawaii) — 15 plans
- [UnitedHealthcare](https://ourhealthnetwork.com/insurance/unitedhealthcare) — 11 plans
- [Humana](https://ourhealthnetwork.com/insurance/humana) — 9 plans
- [Aetna](https://ourhealthnetwork.com/insurance/aetna) — 3 plans
- [Premera BC](https://ourhealthnetwork.com/insurance/premera-bc) — 3 plans
- [UMR](https://ourhealthnetwork.com/insurance/umr) — 3 plans
- [Oxford Health Plans (UHC)](https://ourhealthnetwork.com/insurance/oxford-health-plans-uhc) — 2 plans
- [Regence BCBS Oregon](https://ourhealthnetwork.com/insurance/regence-bcbs-oregon) — 2 plans
- [Regence BlueShield](https://ourhealthnetwork.com/insurance/regence-blueshield) — 2 plans
- [Highmark BCBS Pennsylvania](https://ourhealthnetwork.com/insurance/highmark-bcbs-pennsylvania) — 1 plan
- [Kaiser Permanente Northwest](https://ourhealthnetwork.com/insurance/kaiser-permanente-northwest) — 1 plan
- [Medicare](https://ourhealthnetwork.com/insurance/medicare) — 1 plan

To verify a specific plan covers Diane C Tsai, use the [OurHealthNetwork Insurance Matcher](https://ourhealthnetwork.com/tools/insurance-matcher?npis=1730266966).

## Industry payments disclosure (CMS Open Payments)

Per CMS Open Payments data (most recent year 2024), this provider has received 1 disclosed payment from medical industry sources totaling approximately $26.

Largest disclosed payer: Siemens Medical Solutions USA, Inc. ($26 cumulative).

Source: CMS Open Payments program (federal financial-transparency dataset). Industry payment disclosures do not imply any wrongdoing; many are legitimate consulting fees, research support, or speaker honoraria.

## Related on OurHealthNetwork

- [More Radiation Oncology doctors in WALLA WALLA, WA](https://ourhealthnetwork.com/radiation-oncology/wa/walla-walla)
- [Find insurance plans that cover this doctor](https://ourhealthnetwork.com/tools/insurance-matcher?npis=1730266966)
- [Browse all 5.5M US healthcare providers](https://ourhealthnetwork.com/find-doctors)
- [About our data and methodology](https://ourhealthnetwork.com/methodology)