Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

John Masterson

Individual provider Chiropractor · NPI 1427235084

John Masterson is a Chiropractor in Seattle, Washington. Practices as a sole proprietor. Licensed in Washington.

Licensed in
WA
In the registry since
2008

Practice location Address checks out

925 8th Ave N
Seattle, WA 98109-6304
Phone: (206) 957-9050
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Chiropractor (primary) Taxonomy 111N00000X · Licence CHOOO33793 (WA)

Record details

NPI number1427235084
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorYes
NPI enumeratedJanuary 25, 2008
Last updated in NPPESJanuary 25, 2008
Mailing address535 Pontius Ave N Apt 611, Seattle, WA 98109-4455

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