Hematology & Oncology Physician in Seattle, WA

Ranked by profile completeness, registry tenure & documented Medicare activity — an honest, data-backed ordering, not a quality, outcomes, or patient-satisfaction verdict.

Compare 281 Hematology & Oncology Physician providers with a practice address in Seattle, Washington. Every entry is a real NPI record you can open and verify; 93% of the ranked results below have a street-level (rooftop) location.

Providers in city

281

Street-level located

93%

Registry vintage

June 2026

Ranked Hematology & Oncology Physician

Top 30 of 281

281 Hematology & Oncology Physician practice in Seattle. Compare the most complete records below, or filter the full list by name and nearby ZIP.

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1
Brenda Sandmaier
Hematology & Oncology Physician · Seattle, WA

Ranking reflects NPPES profile completeness, registry tenure, and documented Medicare activity (where present) — see our methodology. It is not a measure of clinical quality or patient satisfaction. Source: CMS NPPES (June 2026); specialty taxonomy: NUCC. Locations are geocoded from the public practice address.