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

Derrick Sier

Individual provider Mental Health Counselor · NPI 1669927331

Derrick Sier is a Mental Health Counselor in Oklahoma City, Oklahoma. Practices as a sole proprietor. Registered with an NPI since 2016.

In the registry since
2016

Practice location Address checks out

10125 Mantle Ct
Oklahoma City, OK 73162-4436
Phone: (405) 412-0473
Show map & directions

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

Specialties & licences

Mental Health Counselor (primary) Taxonomy 101YM0800X

Record details

NPI number1669927331
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorYes
NPI enumeratedAugust 23, 2016
Last updated in NPPESAugust 23, 2016

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