Psychologist | General Psychology

Dr. John Garrett Lammi, PH.D.

2748 Hollyridge Dr, Los Angeles, California, 90068-3039

About Dr. John Garrett Lammi

Dr. John Garrett Lammi is a psychologist based in Los Angeles, California who is specialized in General Psychology. Active license number of Dr. John Garrett Lammi is 6716 for Clinical Psychology in California. His current practice location is 2748 Hollyridge Dr, Los Angeles. Patients can contact him at 323-871-8989. Dr. John Garrett Lammi, PH.D., specializes in General Psychology and his NPI number (Unique professional ID assigned by NPPES) is 1043366396.

Dr. John Garrett Lammi is specialized in psychological testing and evaluating or assessing patient's personal characteristics, such as intelligence, personality, abilities, interests, aptitudes, and neuropsychological functioning. Accordingly, he performs counseling, psychoanalysis, psychotherapy, hypnosis, biofeedback, and behavior analysis and therapy. He can diagnose and treat mental and emotional disorder or disability, alcoholism and substance abuse, disorders of habit or conduct, as well as of the psychological aspects of physical illness, accident, injury, or disability by psycheducational evaluation, therapy, remediation, and consultation.

Practice Information

Dr. John Garrett Lammi'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 Dr. John Garrett Lammi
Specialization General Psychology
Credentials PH.D.
Gender Male
Practice Address: 2748 Hollyridge Dr,
Los Angeles, CA - 90068-3039

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 Number1043366396
NPI Enumeration Date: 26 Jan, 2007
NPI Last Update On: 11 Sep, 2025

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 Dr. John Garrett Lammi are as mentioned below.

License NumberSpecializationStateStatus
6716Clinical Psychology CaliforniaPrimary
6716General Psychology CaliforniaSecondary

Mailing Address

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

Dr. John Garrett Lammi
2748 Hollyridge Dr,
Los Angeles, CA - 90068-3039
Phone: 323-871-8989

Book an Appointment with Dr. John Garrett Lammi

To schedule an appointment, contact Dr. John Garrett Lammi at 2748 Hollyridge Dr, Los Angeles, California or call the phone number listed below.

Book an Appointment

Frequently Asked Questions

Below are some commonly asked questions about Dr. John Garrett Lammi:

Dr. John Garrett Lammi is a psychologist specializing in Clinical Psychology. He is a mental health professional with highly specialized training in the diagnosis and psychological treatment of mental, behavioral and emotional illnesses, including obsessive-compulsive disorder (OCD). His main focus is on diagnosing and treating mental, emotional, and behavioral disorders. Some of the common disorders that he can treat are learning disabilities, substance abuse, depression, anxiety, and eating disorders.

Yes, Dr. John Garrett Lammi 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.

Dr. John Garrett Lammi practices at 2748 Hollyridge Dr, Los Angeles, California, 90068-3039.

To schedule an appointment with Dr. John Garrett Lammi, please contact the office at 323-871-8989.

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