Oncology Billing · Washington

Oncology billing and revenue cycle for Washington providers.

Washington operates 116 oncology billing organizations registered in NPPES, representing 0.9 percent of the U.S. oncology billing footprint. Washington is an established oncology billing market. Oncology revenue cycle complexity centers on infusion administration code stacking, drug J-code and ASP+6 reimbursement, NCCN-aligned prior authorization, and oncology-specific E/M leveling. Washington oncology practices need RCM partners with deep infusion + drug billing experience.

116
NPPES orgs in WA
0.9%
of US market
#28
national rank
90%+
Realization target
Last updated: May 31, 2026 · Authored by ASP-RCM Solutions Team

What good oncology billing execution looks like for Washington providers.

The Washington oncology billing market has its own quirks. Here is the operating discipline we install on every Washington engagement.

  1. Infusion and chemotherapy administration code accuracyOncology infusion billing requires precise capture of initial, sequential, concurrent, and additional hour codes (96360-96376, 96401-96450, J-codes for drugs). Washington infusion centers leak revenue on undercoded administration time.
  2. J-code drug pricing and ASP+6 reimbursementOncology drugs reimburse under Medicare at Average Sales Price + 6 percent (Part B), with similar logic on many commercial. Washington oncology practices need accurate J-code billing, NDC reporting, and ASP-aware revenue forecasting.
  3. Prior authorization for oncology drugsSpecialty oncology drugs require payer prior authorization, often with clinical criteria tied to NCCN guideline alignment. PA automation tuned for oncology compresses access-to-treatment time and reduces denials.
  4. E/M leveling for oncology visitsOncology visits qualify for higher E/M levels under MDM complexity rules. Washington oncology practices that under-level E/M leave significant revenue uncollected.
  5. OCM and Enhancing Oncology Model participationPractices in the CMS Enhancing Oncology Model (EOM) coordinate clinical, financial, and reporting workflows for value-based payment. Washington EOM participants need RCM that flows into program reporting.
  6. 340B drug pricing for eligible oncology entitiesFQHC + DSH-eligible hospital oncology practices in 340B require precise inventory tracking, contract pharmacy coordination, and proper claim modification (TB modifier).

More West state guides.

Sister West state pages for oncology billing.

FAQ: oncology billing in Washington.

How many oncology billing providers operate in Washington?

NPPES lists 116 oncology billing organizations in Washington, representing 0.9% of the U.S. footprint. Top concentrations are in Seattle (13), Spokane (11), Olympia (10).

Does Apple Health cover oncology billing services?

Yes. Apple Health covers oncology billing services for eligible beneficiaries, with plan-specific authorization rules and rate structures that vary by year.

What commercial payers cover oncology billing in Washington?

All major national commercial payers cover oncology billing in Washington, including UnitedHealthcare/Optum, Aetna, Cigna/Evernorth, the dominant Washington Blue Cross Blue Shield plan, and (where active) Humana.

Does ASP-RCM serve oncology billing providers in Washington?

Yes. ASP-RCM Solutions provides oncology billing and revenue cycle services for providers in Washington and across all 50 states. Senior partners on every account. Request a free 30-day audit.

How do I get started?

Request a free 30-day RCM audit. We assess your current state, identify revenue leakage, and produce a written prioritized recommendations list.

Free 30-day audit for Washington oncology billing providers.

Send us your last 90 days of claim data. We will send back a 4-page audit with prioritized recommendations and dollar estimates.

Request audit Talk to a senior partner