Psychologist | Clinical Psychology

Dr. Nancy Mary Horstmann, PHD

4141 Arapahoe Ave, #205, Boulder, Colorado, 80303-1032

About Dr. Nancy Mary Horstmann

Dr. Nancy Mary Horstmann is a psychologist based in Boulder, Colorado who is specialized in Clinical Psychology. Active license number of Dr. Nancy Mary Horstmann is 1514 for Clinical Psychology in Colorado. Her current practice location is 4141 Arapahoe Ave, #205, Boulder. Patients can contact her at 303-447-0811 or can fax her at 303-442-3170. Dr. Nancy Mary Horstmann, PHD, specializes in Clinical Psychology and her NPI number (Unique professional ID assigned by NPPES) is 1184669343.

Dr. Nancy Mary Horstmann 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). Her main focus is on diagnosing and treating mental, emotional, and behavioral disorders. Some of the common disorders that she can treat are learning disabilities, substance abuse, depression, anxiety, and eating disorders.

Practice Information

Dr. Nancy Mary Horstmann'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. Nancy Mary Horstmann
Specialization Clinical Psychology
Credentials PHD
Gender Female
Practice Address: 4141 Arapahoe Ave, #205
Boulder, CO - 80303-1032
Fax 303-442-3170

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 Number1184669343
NPI Enumeration Date: 19 Jun, 2006
NPI Last Update On: 07 Aug, 2013

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. Nancy Mary Horstmann are as mentioned below.

License NumberSpecializationStateStatus
1514Clinical Psychology ColoradoPrimary

Other Medical Identifiers

Other professional identifiers associated with Dr. Nancy Mary Horstmann such as Medicaid, Medicare PIN, NSC, UPIN etc. are mentioned as below.
IdentifierTypeStateIssuer
C60766MedicaidOhio

Mailing Address

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

Dr. Nancy Mary Horstmann
4141 Arapahoe Ave, #205
Boulder, CO - 80303-1032
Phone: 303-447-0811
Fax: 303-442-3170

Book an Appointment with Dr. Nancy Mary Horstmann

To schedule an appointment, contact Dr. Nancy Mary Horstmann at 4141 Arapahoe Ave, #205, Boulder, Colorado or call the phone number listed below.

Book an Appointment

Frequently Asked Questions

Below are some commonly asked questions about Dr. Nancy Mary Horstmann:

Dr. Nancy Mary Horstmann is a psychologist specializing in Clinical Psychology. She 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). Her main focus is on diagnosing and treating mental, emotional, and behavioral disorders. Some of the common disorders that she can treat are learning disabilities, substance abuse, depression, anxiety, and eating disorders.

Yes, Dr. Nancy Mary Horstmann 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. Nancy Mary Horstmann practices at 4141 Arapahoe Ave, #205, Boulder, Colorado, 80303-1032.

To schedule an appointment with Dr. Nancy Mary Horstmann, please contact the office at 303-447-0811.

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