npidata.org Sign in
Products
Provider RadarWatch an area and specialty — weekly alerts on new cliniciansPractice RadarWeekly alerts when new organisations register nearbySpecialtiesEvery NUCC taxonomy, with counts by state and cityStatesProvider counts and breakdowns for all 50 statesPhysician listsMDs and DOs with addresses and phone numbersNP listsNurse practitioners, the fastest-growing groupAPIJSON, delta feed, free tier
Use cases
Healthcare sales prospectingPhysician recruiting and locum staffingMedical device sales territory planningCredentialing and provider verificationHealthcare marketing lists and audience buildingPharmaceutical sales and prescriber targeting
Account
Start freeThree radars and an export a month Sign in Pricing
Explore
Data Labs API
About
About usTermsPrivacyContact us

Search › Washington › 122300000X

Hayley Cowan

NPI 1275161101 · on the registry since 2020 · sole proprietor

Practice

Address
1959 Ne Pacific St Rm B316
Seattle, WA 98195
Phone
(206) 543-5006
Organisation at this address
Goodnight Anesthesia
Uw School Of Dentistry
University Of Washington
University Of Washington
University Of Washington
Inferred from a shared address, not stated in the registry.
Clinicians at this address
4,010

Registry record

Primary taxonomy
122300000X
122300000X
Also registered as
1223X0008X
Licence states on file
WA
From the registry's licence fields, which are often incomplete.
Sex
Female
Record last updated
2025-10-23

Source: CMS National Plan and Provider Enumeration System. Registration is not the same as practising, and the registry records no retirement — some people listed here no longer practise. More in Washington