Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Mark Daniel Sullivan

Individual provider Psychiatry Physician · NPI 1639269590

Mark Daniel Sullivan is a Psychiatry Physician in Seattle, Washington. Licensed in Washington. Registered with an NPI since 2006.

Licensed in
WA
In the registry since
2006
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Practice location Partly verified

Some contact details are missing from the federal record.

University Of Washington Medical Ctr 1959 NE Pacific St
Seattle, WA 98195-6044 Not confirmed with CMS for 13 years — call before visiting
Phone: (206) 598-4282
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Psychiatry Physician (primary) Taxonomy 2084P0800X · Licence MD00023050 (WA)

Record details

NPI number1639269590
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorNo
NPI enumeratedOctober 13, 2006
Last updated in NPPESFebruary 20, 2013

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients31
Services billed 115 a service is one billed item, such as a visit, a test or a procedure
Average patient age70

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

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