Psychiatrist

Rosa Young Ahn-horst, MD MPH

401 Quarry Rd, Palo Alto, California, 94304-1419

About Rosa Young Ahn-horst

Rosa Young Ahn-horst is a psychiatrist based in Palo Alto, California who is specialized in Psychiatry. Active license number of Rosa Young Ahn-horst is A201644 for Psychiatry in California. Her current practice location is 401 Quarry Rd, Palo Alto. Patients can contact her at 650-723-5511. Rosa Young Ahn-horst, MD MPH, specializes in Psychiatry and her NPI number (Unique professional ID assigned by NPPES) is 1649822420.

Rosa Young Ahn-horst 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

Rosa Young Ahn-horst'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 Rosa Young Ahn-horst
Specialization Psychiatry
Credentials MD MPH
Gender Female
Practice Address: 401 Quarry Rd,
Palo Alto, CA - 94304-1419

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 Number1649822420
NPI Enumeration Date: 12 Jul, 2019
NPI Last Update On: 27 Jul, 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 Rosa Young Ahn-horst are as mentioned below.

License NumberSpecializationStateStatus
A201644Psychiatry CaliforniaPrimary
A201644Student in an Organized Health Care Education/Training Program CaliforniaSecondary

Mailing Address

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

Rosa Young Ahn-horst
401 Quarry Rd,
Palo Alto, CA - 94304-1419

Book an Appointment with Rosa Young Ahn-horst

To schedule an appointment, contact Rosa Young Ahn-horst at 401 Quarry Rd, Palo Alto, California or call the phone number listed below.

Book an Appointment

Frequently Asked Questions

Below are some commonly asked questions about Rosa Young Ahn-horst:

Rosa Young Ahn-horst 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, Rosa Young Ahn-horst 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.

Rosa Young Ahn-horst practices at 401 Quarry Rd, Palo Alto, California, 94304-1419.

To schedule an appointment with Rosa Young Ahn-horst, please contact the office at 650-723-5511.

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