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

Brittany Ann Thammavongkeo, LCSW, CAC

Individual provider Addiction (Substance Use Disorder) Counselor · NPI 1992406011

Brittany Ann Thammavongkeo, LCSW, CAC is a Clinical Social Worker in Sioux Falls, South Dakota. Qualified in 2021, 5 years ago. Practices with Behavior Management Systems Inc, a 17-clinician group, works from 2 locations, accepts Medicare assignment and offers telehealth. Licensed in South Dakota.

Years since qualifying
5
Licensed in
SD
In the registry since
2023
Specialties on file
2
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

521 N Main Ave
Sioux Falls, SD 57104-5948
Phone: (605) 367-8793
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 4308 S Arway Dr, Sioux Falls, SD 57106-3131 — (605) 573-2000

Specialties & licences

Social Worker (primary) Taxonomy 104100000X · Licence 6322 (SD)
Addiction (Substance Use Disorder) Counselor Taxonomy 101YA0400X · Licence 14091672 (SD)

Record details

NPI number1992406011
Entity typeIndividual (Type 1)
GenderFemale
Credentials LCSW , CAC
Sole proprietorNo
NPI enumeratedMarch 15, 2023
Last updated in NPPESMarch 15, 2023
Certification dateMarch 15, 2023

Medicare enrollment

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

Medicare specialtyCLINICAL SOCIAL WORKER
Medical schoolOTHER
Graduated 2021 (5 years in practice)
Group practice Behavior Management Systems Inc — 17 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations3 on file with Medicare

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