Psychologist | Clinical Psychology

Donald Koelpin, PHD

2100 Napa Vallejo Hwy, Napa, California, 94558-6234

About Donald Koelpin

Donald Koelpin is a psychologist based in Napa, California who is specialized in Clinical Psychology. Active license number of Donald Koelpin is PSY 22713 for Clinical Psychology in California. His current practice location is 2100 Napa Vallejo Hwy, Napa. Patients can contact him at 707-253-5000 or can fax him at 707-253-5513. Donald Koelpin, PHD, specializes in Clinical Psychology and his NPI number (Unique professional ID assigned by NPPES) is 1215165782.

Donald Koelpin 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.

Practice Information

Donald Koelpin'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 Donald Koelpin
Specialization Clinical Psychology
Credentials PHD
Gender Male
Practice Address: 2100 Napa Vallejo Hwy,
Napa, CA - 94558-6234
Fax 707-253-5513

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 Number1215165782
NPI Enumeration Date: 23 Jun, 2009
NPI Last Update On: 17 Jul, 2009

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 Donald Koelpin are as mentioned below.

License NumberSpecializationStateStatus
PSY 22713Clinical Psychology CaliforniaPrimary

Mailing Address

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

Donald Koelpin
1600 9th St Ste 205,
Sacramento, CA - 95814-6435
Phone: 916-654-2431
Fax: 916-654-3186

Book an Appointment with Donald Koelpin

To schedule an appointment, contact Donald Koelpin at 2100 Napa Vallejo Hwy, Napa, California or call the phone number listed below.

Book an Appointment

Frequently Asked Questions

Below are some commonly asked questions about Donald Koelpin:

Donald Koelpin 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, Donald Koelpin 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.

Donald Koelpin practices at 2100 Napa Vallejo Hwy, Napa, California, 94558-6234.

To schedule an appointment with Donald Koelpin, please contact the office at 707-253-5000.

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