Psychiatrist | Geriatric Psychiatry

Dr. Marissa M. Mariano-mejia, M.D.

850 E Foothill Blvd, Rialto, California, 92376-5230

About Dr. Marissa M. Mariano-mejia

Dr. Marissa M. Mariano-mejia is a psychiatrist based in Rialto, California who is specialized in Geriatric Psychiatry. Active license number of Dr. Marissa M. Mariano-mejia is A56023 for Psychiatry in California. Her current practice location is 850 E Foothill Blvd, Rialto. Patients can contact her at 909-421-9280 or can fax her at 909-421-9219. Dr. Marissa M. Mariano-mejia, M.D., specializes in Geriatric Psychiatry and her NPI number (Unique professional ID assigned by NPPES) is 1750426862.

Dr. Marissa M. Mariano-mejia has psychiatric expertise in prevention, evaluation, diagnosis and treatment of mental and emotional disorders in the elderly, and improvement of psychiatric care for healthy and ill elderly patients.

Practice Information

Dr. Marissa M. Mariano-mejia'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. Marissa M. Mariano-mejia
Specialization Geriatric Psychiatry
Credentials M.D.
Gender Female
Practice Address: 850 E Foothill Blvd,
Rialto, CA - 92376-5230
Fax 909-421-9219

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 Number1750426862
NPI Enumeration Date: 20 Feb, 2007
NPI Last Update On: 23 Feb, 2021

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. Marissa M. Mariano-mejia are as mentioned below.

License NumberSpecializationStateStatus
A56023Psychiatry CaliforniaPrimary
A56023Geriatric Psychiatry 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. Marissa M. Mariano-mejia
850 E Foothill Blvd,
Rialto, CA - 92376-5230
Phone: 909-421-9280
Fax: 909-421-9219

Book an Appointment with Dr. Marissa M. Mariano-mejia

To schedule an appointment, contact Dr. Marissa M. Mariano-mejia at 850 E Foothill Blvd, Rialto, California or call the phone number listed below.

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Frequently Asked Questions

Below are some commonly asked questions about Dr. Marissa M. Mariano-mejia:

Dr. Marissa M. Mariano-mejia is a psychiatrist specializing in Psychiatry. She 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, Dr. Marissa M. Mariano-mejia 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. Marissa M. Mariano-mejia practices at 850 E Foothill Blvd, Rialto, California, 92376-5230.

To schedule an appointment with Dr. Marissa M. Mariano-mejia, please contact the office at 909-421-9280.

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