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

Individual provider Addiction (Substance Use Disorder) Counselor · NPI 1023585247

David Heiserman is an Addiction (Substance Use Disorder) Counselor in Tarzana, California. Practices as a sole proprietor. Licensed in California.

Licensed in
CA
In the registry since
2018
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Practice location Address checks out

18646 Oxnard St
Tarzana, CA 91356
Phone: (747) 224-0384
Fax: (818) 960-4087
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Addiction (Substance Use Disorder) Counselor (primary) Taxonomy 101YA0400X · Licence 1691301 (CA)

Record details

NPI number1023585247
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorYes
NPI enumeratedOctober 25, 2018
Last updated in NPPESMarch 24, 2025
Certification dateMarch 24, 2025

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