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

Stephan Matthew Diehl

Individual provider Addiction (Substance Use Disorder) Counselor · NPI 1144921370

Stephan Matthew Diehl is an Addiction (Substance Use Disorder) Counselor in San Diego, California. Licensed in California. Registered with an NPI since 2023.

Licensed in
CA
In the registry since
2023

Practice location Address checks out

4161 Marlborough Ave
San Diego, CA 92105-1412
Phone: (619) 282-7274
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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 R1475590722 (CA)

Record details

NPI number1144921370
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorNo
NPI enumeratedMarch 14, 2023
Last updated in NPPESMarch 14, 2023
Certification dateMarch 14, 2023

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