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

Mark Van Steenberg, LCSW

Individual provider Clinical Social Worker · NPI 1093101602

Mark Van Steenberg, LCSW is a Clinical Social Worker in Louisville, Colorado. Qualified in 2014, 12 years ago. Practices with Sondermind Provider Network LLC, a 1,258-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Colorado.

Years since qualifying
12
Licensed in
CO
In the registry since
2015
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

1826 Steel St
Louisville, CO 80027-8532
Phone: (720) 460-7660
Fax: (303) 648-6686
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 1333 Iris Ave, Boulder, CO 80304-2226 — (303) 443-8500

Specialties & licences

Clinical Social Worker (primary) Taxonomy 1041C0700X · Licence CSW.09927520 (CO)

Record details

NPI number1093101602
Entity typeIndividual (Type 1)
GenderMale
Credentials LCSW
Sole proprietorNo
NPI enumeratedApril 9, 2015
Last updated in NPPESAugust 12, 2022
Certification dateAugust 12, 2022
Mailing address1826 Steel Street, Louisville, CO 80027-8532

Medicare enrollment

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

Medicare specialtyCLINICAL SOCIAL WORKER
Medical schoolOTHER
Graduated 2014 (12 years in practice)
Group practice Sondermind Provider Network Llc — 1258 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations5 on file with Medicare

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