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Dr. Anthony L. Back, MD

Medical Oncology (Medical Oncology Physician)

Ambulatory Clinic, 825 Eastlake Avenue East
Seattle, WA 98109

Who else practices at this address →

King County includes primary care (5% of residents) and dental (4% of residents) and mental health (4% of residents) shortage areas. About shortage areas

Call (206) 288-1000

At a glance

Medical school
Harvard Medical School (1984)
Years since graduation
42
In the NPI registry since
2006

Licensed in Washington since 1985, according to the Washington State Department of Health. We show license dates only for the states that publish them in bulk; see which states do. For other states, check the state medical board.

The NPI date is when this clinician registered for a National Provider Identifier, the billing number used on health claims. It is not a license, graduation or board-certification date. NPIs were first issued in May 2005 and became required on claims in 2007–2008, so an early date usually means the clinician was already in practice before then. What an NPI is

Education and training

  • 1984Medical school: Harvard Medical School
  • 2006Registered with an NPI (national billing number; not a license date) — NPIs began in 2005, so practice likely started earlier

Undergraduate school, residency, fellowship, licensing exams and board certification aren’t in public federal data. Board certification can be confirmed with the certifying board (ABMS member boards for MDs, AOA boards for DOs).

Specialties and state licenses

  • Medical Oncology Physician primary
    WA license MD00022980 (first issued 1985; active)
  • Hospice and Palliative Medicine (Internal Medicine) Physician
    WA license MD00022980 (first issued 1985; active)
  • Internal Medicine Physician
    WA license MD00022980 (first issued 1985; active)

As reported to the NPI registry. To confirm a license is current, check the state medical board.

Map: Medical Oncology per capita by county →

Where they work

Hospitals

Medical groups

Hospitals this clinician lists with Medicare, and groups they bill Medicare through (Care Compare). Affiliation doesn’t mean they see patients at every location.

Other Medical Oncology clinicians in Seattle

Sources

NPI registry (CMS NPPES, November 2026; record last updated October 24, 2011), Medicare Care Compare, Medicare Physician & Other Practitioners (2024), Medicare Part D Prescribers (2024) and Open Payments (2025). Information is self-reported or billed data and may be out of date; call before visiting.

NPI 1932285731. Official NPI registry record (opens in a new tab). Clinicians can correct their information in NPPES; changes appear here after our next monthly update.