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

Mr. Arthur David Walston, CASAC, LMSW

Individual provider Addiction (Substance Use Disorder) Counselor · NPI 1861670044

Mr. Arthur David Walston, CASAC, LMSW is an Addiction (Substance Use Disorder) Counselor in Riverhead, New York. Practices as a sole proprietor. Registered with an NPI since 2008.

In the registry since
2008
What do these letters mean?
LMSW — Licensed Master Social Worker
A master's-level social worker, usually practising under supervision.

See every abbreviation used in this directory →

Practice location Address checks out

116 Vista Ct
Riverhead, NY 11901-5005
Phone: (631) 276-3612
Show map & directions

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

Specialties & licences

Addiction (Substance Use Disorder) Counselor (primary) Taxonomy 101YA0400X

Record details

NPI number1861670044
Entity typeIndividual (Type 1)
GenderMale
Credentials CASAC , LMSW
Sole proprietorYes
NPI enumeratedFebruary 9, 2008
Last updated in NPPESOctober 25, 2014

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