Psychologist | Clinical Psychology

Andrew J Theiss, PH.D.

4501 Tamiami Trl N, Suite 318, Naples, Florida, 34103-3060

About Andrew J Theiss

Andrew J Theiss is a psychologist based in Naples, Florida who is specialized in Clinical Psychology. Active license number of Andrew J Theiss is PY00005436 for Clinical Psychology in Florida. His current practice location is 4501 Tamiami Trl N, Suite 318, Naples. Patients can contact him at 239-649-7799 or can fax him at 239-566-1844. Andrew J Theiss, PH.D., specializes in Clinical Psychology and his NPI number (Unique professional ID assigned by NPPES) is 1932399656.

Andrew J Theiss 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

Andrew J Theiss'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 Andrew J Theiss
Specialization Clinical Psychology
Credentials PH.D.
Gender Male
Practice Address: 4501 Tamiami Trl N, Suite 318
Naples, FL - 34103-3060
Fax 239-566-1844

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 Number1932399656
NPI Enumeration Date: 30 Jul, 2007
NPI Last Update On: 30 Jul, 2007

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 Andrew J Theiss are as mentioned below.

License NumberSpecializationStateStatus
PY00005436Clinical Psychology FloridaPrimary

Mailing Address

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

Andrew J Theiss
4501 Tamiami Trl N, Suite 318
Naples, FL - 34103-3060
Phone: 239-649-7799
Fax: 239-566-1844

Book an Appointment with Andrew J Theiss

To schedule an appointment, contact Andrew J Theiss at 4501 Tamiami Trl N, Suite 318, Naples, Florida or call the phone number listed below.

Book an Appointment

Frequently Asked Questions

Below are some commonly asked questions about Andrew J Theiss:

Andrew J Theiss 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, Andrew J Theiss 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.

Andrew J Theiss practices at 4501 Tamiami Trl N, Suite 318, Naples, Florida, 34103-3060.

To schedule an appointment with Andrew J Theiss, please contact the office at 239-649-7799.

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