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

Mark D Clayton, LCSW

Individual provider Clinical Social Worker · NPI 1376611384

Mark D Clayton, LCSW is a Clinical Social Worker in Saint George, Utah. Qualified in 1984, 42 years ago. Practices as a sole proprietor, accepts Medicare assignment and offers telehealth. Licensed in Utah.

Years since qualifying
42
Licensed in
UT
In the registry since
2006
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

166 N 300 W Ste 2
Saint George, UT 84770-2770
Phone: (435) 673-4870
Fax: (435) 216-9403
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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 881317683501 (UT)

Record details

NPI number1376611384
Entity typeIndividual (Type 1)
GenderMale
Credentials LCSW
Sole proprietorYes
NPI enumeratedNovember 30, 2006
Last updated in NPPESMarch 20, 2017
Mailing addressPo Box 3219, Saint George, UT 84771-3219

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyCLINICAL SOCIAL WORKER
Medical schoolOTHER
Graduated 1984 (42 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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