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

Leonard Houlker

Individual provider Addiction (Substance Use Disorder) Counselor · NPI 1588068613

Leonard Houlker is an Addiction (Substance Use Disorder) Counselor in Lancaster, California. Practices as a sole proprietor. Registered with an NPI since 2014.

In the registry since
2014

Practice location Address checks out

44900 60th St W
Lancaster, CA 93536-7618
Phone: (661) 945-8458
Show map & directions

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

Specialties & licences

Addiction (Substance Use Disorder) Counselor (primary) Taxonomy 101YA0400X

Record details

NPI number1588068613
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorYes
NPI enumeratedOctober 17, 2014
Last updated in NPPESOctober 17, 2014

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