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

Mark D. Clayton LCSW PC

Organization Clinical Social Worker · NPI 1346511953

Mark D. Clayton LCSW PC is a Clinical Social Worker in St George, Utah. Registered with an NPI since 2012.

In the registry since
2012
What do these letters mean?
PC — Professional corporation
A form of business registration, not a clinical qualification.

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Practice location Address checks out

166 N 300 W Ste 2
St George, UT 84770-2770
Phone: (435) 673-4870
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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

Record details

NPI number1346511953
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Mark Clayton — President · (435) 673-4870
NPI enumeratedJanuary 13, 2012
Last updated in NPPESMarch 20, 2017
Mailing addressPo Box 3219, St George, UT 84771-3219

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