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

Castlewood Treatment Center LLC

Organization Clinic/Center · NPI 1790954410

Castlewood Treatment Center LLC is a Clinic/Center in Fenton, Missouri. Registered with an NPI since 2008.

In the registry since
2008
What do these letters mean?
LLC — Limited liability company
A form of business registration, not a clinical qualification.

See every abbreviation used in this directory →

Practice location Address checks out

1855 Bowles Ave Ste 210
Fenton, MO 63026
Phone: (636) 779-1430
Fax: (314) 686-4920
Show map & directions

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

Specialties & licences

Clinic/Center (primary) Taxonomy 261Q00000X

Record details

NPI number1790954410
Entity typeOrganization (Type 2)
Organization subpartYes
Parent organizationCastlewood Treatment Center
Authorized official Heather Wilhelm — Director Of Client Accounts · (314) 222-7441
Other names Alsana
NPI enumeratedFebruary 27, 2008
Last updated in NPPESOctober 10, 2023
Certification dateOctober 10, 2023
Mailing address1855 Bowles Ave Ste 210, Fenton, MO 63026-1900

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