Psychiatrist

John M Hassler, M.D.

1223 Roslyn Ln, La Jolla, California, 92037-3648

About John M Hassler

John M Hassler is a psychiatrist based in La Jolla, California who is specialized in Psychiatry. Active license number of John M Hassler is G15132 for Psychiatry in California. His current practice location is 1223 Roslyn Ln, La Jolla. Patients can contact him at 858-454-9341. John M Hassler, M.D., specializes in Psychiatry and his NPI number (Unique professional ID assigned by NPPES) is 1306928700.

John M Hassler specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.

Practice Information

John M Hassler's specialty, credentials, practice address, contact phone number and fax are as below. Patients can call on the below given phone number for appointment.

Provider Name John M Hassler
Specialization Psychiatry
Credentials M.D.
Gender Male
Practice Address: 1223 Roslyn Ln,
La Jolla, CA - 92037-3648

Professional Identification Codes

NPI number stands for National Provider Identifier which is a unique 10-digit identification number issued to healthcare providers in the United States by the Centers for Medicare and Medicaid Services (CMS). NPI details are as mentioned below.

NPI Number1306928700
NPI Enumeration Date: 19 Oct, 2006
NPI Last Update On: 08 Jul, 2007

Medical Licenses:

Healthcare professionals can hold one or more medical licenses for different specialties in the same state or different states. Related medical licenses for John M Hassler are as mentioned below.

License NumberSpecializationStateStatus
G15132Psychiatry CaliforniaPrimary

Mailing Address

Business mailing address can be used for mailing purpose only, for visiting purpose patients need to refer above mentioned Practice address.

John M Hassler
733 Muirlands Vista Way,
La Jolla, CA - 92037-6202
Phone: 858-454-8575

Book an Appointment with John M Hassler

To schedule an appointment, contact John M Hassler at 1223 Roslyn Ln, La Jolla, California or call the phone number listed below.

Book an Appointment

Frequently Asked Questions

Below are some commonly asked questions about John M Hassler:

John M Hassler is a psychiatrist specializing in Psychiatry. He specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.

Yes, John M Hassler is currently accepting new patients. To schedule an appointment, contact the office directly and schedule an appointment.
*Availability may change. Please contact the office directly to ask about appointments.

John M Hassler practices at 1223 Roslyn Ln, La Jolla, California, 92037-3648.

To schedule an appointment with John M Hassler, please contact the office at 858-454-9341.

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**Data of this site is collected from Medicare & Medicaid Services (CMS) and NPPES. Last updated on 14 September, 2026.