Psychologist | Clinical Psychology

Dr. William Douglas Pierce, PHD

1000 W 4th St, Yankton, South Dakota, 57078-3730

About Dr. William Douglas Pierce

Dr. William Douglas Pierce is a psychologist based in Yankton, South Dakota who is specialized in Clinical Psychology. Active license number of Dr. William Douglas Pierce is 431 for Clinical Psychology in South Dakota. His current practice location is 1000 W 4th St, Yankton. Patients can contact him at 605-665-0258. Dr. William Douglas Pierce, PHD, specializes in Clinical Psychology and his NPI number (Unique professional ID assigned by NPPES) is 1205801727.

Dr. William Douglas Pierce 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

Dr. William Douglas Pierce'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. William Douglas Pierce
Specialization Clinical Psychology
Credentials PHD
Gender Male
Practice Address: 1000 W 4th St,
Yankton, SD - 57078-3730

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 Number1205801727
NPI Enumeration Date: 19 Feb, 2006
NPI Last Update On: 23 May, 2011

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. William Douglas Pierce are as mentioned below.

License NumberSpecializationStateStatus
431Clinical Psychology South DakotaPrimary

Other Medical Identifiers

Other professional identifiers associated with Dr. William Douglas Pierce such as Medicaid, Medicare PIN, NSC, UPIN etc. are mentioned as below.
IdentifierTypeStateIssuer
6551840MedicaidSouth Dakota

Mailing Address

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

Dr. William Douglas Pierce
1000 W 4th St, Suite 11
Yankton, SD - 57078-3700
Phone: 605-665-0258

Book an Appointment with Dr. William Douglas Pierce

To schedule an appointment, contact Dr. William Douglas Pierce at 1000 W 4th St, Yankton, South Dakota or call the phone number listed below.

Book an Appointment

Frequently Asked Questions

Below are some commonly asked questions about Dr. William Douglas Pierce:

Dr. William Douglas Pierce 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. William Douglas Pierce 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. William Douglas Pierce practices at 1000 W 4th St, Yankton, South Dakota, 57078-3730.

To schedule an appointment with Dr. William Douglas Pierce, please contact the office at 605-665-0258.

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