Psychiatrist

Alexander William Threlfall, MD

800 A St, San Rafael, California, 94901-3011

About Alexander William Threlfall

Alexander William Threlfall is a psychiatrist based in San Rafael, California who is specialized in Psychiatry. Active license number of Alexander William Threlfall is 113086 for Psychiatry in California. His current practice location is 800 A St, San Rafael. Patients can contact him at 415-457-8182 or can fax him at 415-457-7471. Alexander William Threlfall, MD, specializes in Psychiatry and his NPI number (Unique professional ID assigned by NPPES) is 1669538187.

Alexander William Threlfall 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

Alexander William Threlfall'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 Alexander William Threlfall
Specialization Psychiatry
Credentials MD
Gender Male
Practice Address: 800 A St,
San Rafael, CA - 94901-3011
Fax 415-457-7471

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 Number1669538187
NPI Enumeration Date: 29 Dec, 2006
NPI Last Update On: 01 Sep, 2026

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 Alexander William Threlfall are as mentioned below.

License NumberSpecializationStateStatus
113086Psychiatry CaliforniaPrimary

Mailing Address

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

Alexander William Threlfall
Po Box 3517,
San Rafael, CA - 94912-3517
Phone: 415-457-8182
Fax: 415-457-7471

Book an Appointment with Alexander William Threlfall

To schedule an appointment, contact Alexander William Threlfall at 800 A St, San Rafael, California or call the phone number listed below.

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Frequently Asked Questions

Below are some commonly asked questions about Alexander William Threlfall:

Alexander William Threlfall 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, Alexander William Threlfall 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.

Alexander William Threlfall practices at 800 A St, San Rafael, California, 94901-3011.

To schedule an appointment with Alexander William Threlfall, please contact the office at 415-457-8182.

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