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

Mr. Mark Raymond Seiberling, LCSW

Individual provider Clinical Social Worker · NPI 1083810931

Mr. Mark Raymond Seiberling, LCSW is a Clinical Social Worker in Riverside, California. Practices as a sole proprietor. Licensed in California.

Licensed in
CA
In the registry since
2007
What do these letters mean?
LCSW — Licensed Clinical Social Worker
A social worker licensed to diagnose and treat mental health conditions independently.

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Practice location Address checks out

5225 Canyon Crest Dr
Riverside, CA 92507-6301
Phone: (951) 248-4000
Fax: (951) 248-4021
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Clinical Social Worker (primary) Taxonomy 1041C0700X · Licence LCS 8473 (CA)

Record details

NPI number1083810931
Entity typeIndividual (Type 1)
GenderMale
Credentials LCSW
Sole proprietorYes
NPI enumeratedJune 26, 2007
Last updated in NPPESJuly 8, 2007

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