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

Mr. Gary John Clinton Mersereau Sr., BSN, RN

Individual provider Emergency Registered Nurse · NPI 1114542065

Mr. Gary John Clinton Mersereau Sr., BSN, RN is an Emergency Registered Nurse in Centralia, Washington. Licensed in Washington. Registered with an NPI since 2020.

Licensed in
WA
In the registry since
2020
What do these letters mean?
BSN — Bachelor of Science in Nursing
A four-year nursing degree.
RN — Registered Nurse
A licensed nurse who completed a nursing degree and passed the NCLEX-RN examination.

See every abbreviation used in this directory →

Practice location Address checks out

914 S Scheuber Rd
Centralia, WA 98531-9027
Phone: (360) 330-8785
Show map & directions

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

Specialties & licences

Emergency Registered Nurse (primary) Taxonomy 163WE0003X · Licence RN60383846 (WA)

Record details

NPI number1114542065
Entity typeIndividual (Type 1)
GenderMale
Credentials BSN , RN
Sole proprietorNo
NPI enumeratedJune 16, 2020
Last updated in NPPESJune 16, 2020
Certification dateJune 16, 2020