Receptionist
303-986-4197

Hours
Monday – Friday, 8:30am-5:00pm

Diem Phan, She/Her

Doctor of Philosophy in Psychology

PSY #4126 · Active · CO DORA Licensed Provider · Verified Apr 9, 2026 · Verify →
Therapist Diem Phan headshot outdoors wearing a green jacket
3.0
Based on 2 Verified Client Ratings

Diem AT A GLANCE

Diem is only providing evaluations and conducting testing at this time.

Diem specializes in psychological evaluations and testing in Centennial, providing children and adults with expert clarity on ADHD and mental health through evidence-based clinical care.

Get to know Diem Phan ↓
Specializations ADHD Evaluations and Bariatric Evaluations View full specialty details ↓
Insurance Accepted United/Optum, and more View full insurance details ↓
Appointment Type In-Person · Centennial Video Call · Throughout Colorado View appointment type details ↓
No upcoming openings in Diem's calendar. Please contact us for help finding availability. ↓

About Diem

Gender Woman
Pronouns She/Her
Ethnicity Asian

Dr. Diem Phan is a Licensed Psychologist in the Denver community who is passionate about using culturally-sensitive and evidenced-based Acceptance-Commitment Therapy, Dialectical-Behavior Therapy, Exposure and Ritual Prevention, EMDR, and Cognitive-Behavioral Therapy for treatment of mood/bipolar disorders, OCD, ADHD, anxiety disorders, and trauma across the lifespan. Her background and expertise also lie in providing psychological testing in the areas of ADHD, Learning Disability, military, court, and International Adoption. She has completed Post-Doctoral Master’s degree in Clinical Psychopharmacology and is currently finishing an advanced Psychopharmacology Fellowship to become licensed as a Prescribing Psychologist in Colorado. As a Psychopharmacology Fellow, she can now see clients who may benefit from therapy and medication management services under the supervision of a Board-Certified Psychiatrist.

Dr. Phan aims to assist individuals in overcoming their emotional pain to live a full and meaningful life. Through her new training and education, she is looking forward to being able to offer an integrative approach to meeting her clients’ needs. She provides a free phone screening consultation to evaluate your needs in order to ensure quality of services.

Who Diem Works With

SPECIALIZATIONS

LIFE CHALLENGES & CONDITIONS

POPULATIONS & COMMUNITIES SERVED

Where Diem Offers Appointments

In-Person Therapy in Colorado: Centennial

Online Therapy

Diem Phan offers HIPAA-compliant, encrypted video therapy sessions through Westside Behavioral Care. In compliance with Colorado state licensing requirements, video sessions are only available to clients physically located in Colorado at the time of their appointment. Prior to your first session, Diem Phan will send you everything you need to join your secure video call.

In-Network Insurance Accepted by Diem

The insurance plans that Diem accepts are below. Don’t see your insurance plan listed? Find your insurance plan here to see which therapists are in-network.


Frequently Asked Questions About Scheduling with Westside

Starting therapy can come with a lot of questions, and that’s completely normal. Here are a few quick answers to help you feel more comfortable before getting started.

Help Booking With Diem

Have a question or want help before booking? Use the form below to connect with our support team. We’ll follow up, typically within a few hours.

Professional Credentials

License Verification

Diem Phan

Active · CO DORA Licensed Provider

License PSY #4126
Status Active
Expires Aug 31, 2027
Degree ~Doctorate of Philosophy
Last Verified Apr 9, 2026
Verify on DORA's Website →

In-Person & Video Sessions Service Area

Meet with Diem Phan in-person or via secure video throughout Colorado. In-person appointments are available to clients in Aurora, Centennial, Denver, Englewood, Greenwood Village, Lakewood, Littleton, and surrounding areas in Greater Denver Metro. Nearby clients find the commute well worth it.

Why Choose a Westside Therapist?

Westside Behavioral Care has been locally owned and serving Colorado communities since 1998. About Westside Behavioral Care