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

Mr. William S Mattila, LMHC

Individual provider Counselor · NPI 1245332485

Mr. William S Mattila, LMHC is a Counselor in Oak Harbor, Washington. Registered with an NPI since 2006.

In the registry since
2006
What do these letters mean?
LMHC — Licensed Mental Health Counselor
A licensed mental health counsellor; the title used in Florida, New York and Washington among others.

See every abbreviation used in this directory →

Practice location Address checks out

1121 SE Dock St
Oak Harbor, WA 98277
Phone: (360) 679-2779
Fax: (360) 679-2777
Show map & directions

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

Specialties & licences

Counselor (primary) Taxonomy 101Y00000X

Record details

NPI number1245332485
Entity typeIndividual (Type 1)
GenderMale
Credentials LMHC
Sole proprietorNo
NPI enumeratedSeptember 1, 2006
Last updated in NPPESJuly 8, 2007

Other providers in Oak Harbor