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

John M. Hassler, MD, Inc

Organization Psychoanalyst · NPI 1578744074

John M. Hassler, MD, Inc is a Psychoanalyst in LA Jolla, California. Licensed in California. Registered with an NPI since 2007.

Licensed in
CA
In the registry since
2007
What do these letters mean?
Inc — Incorporated
A form of business registration, not a clinical qualification.

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Practice location Address checks out

1223 Roslyn Ln
LA Jolla, CA 92037-3648
Phone: (858) 454-9341
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Psychoanalyst (primary) Taxonomy 102L00000X · Licence G15132 (CA)

Record details

NPI number1578744074
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official John Hassler — President · (858) 454-9341
NPI enumeratedNovember 26, 2007
Last updated in NPPESNovember 26, 2007
Mailing address1223 Roslyn Ln, La Jolla, CA 92037-3648

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