Psychologist | Clinical Psychology

Warren John Maas, MA, LP, JD

1821 University Ave W, Suite N385, Saint Paul, Minnesota, 55104-2801

About Warren John Maas

Warren John Maas is a psychologist based in Saint Paul, Minnesota who is specialized in Clinical Psychology. Active license number of Warren John Maas is LP1091 for Group Psychotherapy in Minnesota. His current practice location is 1821 University Ave W, Suite N385, Saint Paul. Patients can contact him at 651-644-8515 or can fax him at 651-644-3451. Warren John Maas, MA, LP, JD, specializes in Clinical Psychology and his NPI number (Unique professional ID assigned by NPPES) is 1912086588.

Warren John Maas 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

Warren John Maas'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 Warren John Maas
Specialization Clinical Psychology
Credentials MA, LP, JD
Gender Male
Practice Address: 1821 University Ave W, Suite N385
Saint Paul, MN - 55104-2801
Fax 651-644-3451

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 Number1912086588
NPI Enumeration Date: 03 Nov, 2006
NPI Last Update On: 11 Sep, 2025

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 Warren John Maas are as mentioned below.

License NumberSpecializationStateStatus
LP1091Group Psychotherapy MinnesotaPrimary
LP1091Clinical Psychology MinnesotaSecondary
LP1091General Psychology MinnesotaSecondary

Mailing Address

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

Warren John Maas
1821 University Ave W, Suite N385
Saint Paul, MN - 55104-2801
Phone: 651-644-8515
Fax: 651-644-3451

Book an Appointment with Warren John Maas

To schedule an appointment, contact Warren John Maas at 1821 University Ave W, Suite N385, Saint Paul, Minnesota or call the phone number listed below.

Book an Appointment

Frequently Asked Questions

Below are some commonly asked questions about Warren John Maas:

Warren John Maas is a psychologist specializing in Group Psychotherapy. He is specialized to perform group therapy, a form of psychotherapy in which one or more therapists treat a small group of clients together as a group. It can be any form of psychotherapy which is delivered in a group format, including cognitive behavioural therapy or interpersonal therapy, but it is usually psychodynamic group therapy where the group context and group process is explicitly utilised as a mechanism of change by developing, exploring and examining interpersonal relationships within the group.

Yes, Warren John Maas 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.

Warren John Maas practices at 1821 University Ave W, Suite N385, Saint Paul, Minnesota, 55104-2801.

To schedule an appointment with Warren John Maas, please contact the office at 651-644-8515.

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