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Sergio Martinez-Casillas

Pre-Licensed Professional
Weekend Therapy Psychological Services, Inc.
Accepting clients Last Updated 0 days ago

Hola! I'm Sergio, and I’m an Associate Professional Clinical Counselor who has been working in the mental health field for over eight years. I’m a big believer in the power of rewriting your own story—no matter where you’re starting from.

My work focuses on helping people navigate anxiety, depression, grief, schizophrenia, and I’m especially passionate about supporting the LGBTQ+ community. I’m also a proud veteran, having served as a military police officer with the California Army National Guard.

I concurrently work at a residential facility where I support families and help them better understand mental health. I use Cognitive Behavioral Therapy (CBT) to help people break out of negative thought patterns, and I’m also certified in grief counseling.

Fun fact: I speak Spanish, and I’ve also studied kinesiology—so I take a whole-person approach to wellness.

My goal is simple: to walk alongside you as you process your emotions, your struggles, and your healing. Taking that first step toward change can be scary, but it's also incredibly powerful—and you don’t have to do it alone.

One symbol I always come back to is the semicolon; it represents the choice to keep going when things feel overwhelming. Your story isn’t over, and I’m here to help you keep writing it.

Let’s take the next step together.


Specialties

Anxiety Depression Gender Identity Sexual Orientation Trauma & PTSD

In-Network Insurance Plans

Sergio Martinez-Casillas is in network for the following plans:

Aetna Aetna Better Health Aetna Student Health Brown University Student Health Insurance (UnitedHealthcare) Cigna and Evernorth GEHA Harvard Pilgrim Optum Optum Partners Oscar Oxford UHCSR Boston College UMR UMR Mount Sinai Employee Health Plan United Behavioral Health UnitedHealthcare United Health Care Community Plan UnitedHealthcare StudentResources UTHSC Student Insurance (StudentResources)
Paperwork:

I can provide you with paperwork for reimbursement from your insurance company if you are seeking out-of-network sessions.

Claim Submission:

I will complete and submit paperwork on your behalf for reimbursement from your insurance company if you are seeking out-of-network sessions.

NPI Number

1033980842

Rates

First session $120
Ongoing sessions $120
Sliding Scale Offered: A sliding scale fee "slides" to try to meet the needs of clients who are unable to pay the full fee. Details can be discussed upon consultation.

Practice Hours

Monday 7:00 p.m. - 9:00 p.m.
Tuesday 7:00 p.m. - 9:00 p.m.
Wednesday 7:00 p.m. - 9:00 p.m.
Thursday 7:00 p.m. - 9:00 p.m.
Friday 7:00 p.m. - 9:00 p.m.
Saturday 10:00 a.m. - 9:00 p.m.
Sunday 10:00 a.m. - 8:00 p.m.

Treatment Approaches

Cognitive Behavioral Therapy (CBT) Cognitive Processing Therapy (CPT) Compassion Focused Culturally Sensitive Exposure Therapy Feminist Gottman Method Holistic Mindfulness Mindfulness-Based Cognitive Therapy (MBCT) Trauma Focused

Modalities

Couples Family Groups Individuals

Age Groups

Preteens (11-12) Adolescents (13-17) Young Adults (18-25) Adults (26-64) Seniors (65+)

Communities

Activists Athletes Immigrants Kink / BDSM LGBQ+ Neurodiverse People of Color People with Disabilities Polyamorous Trans non-binary gender fluid Undocumented Veterans

Meeting Options

Video sessions available

Qualifications

  • Years in Practice: 8
  • Supervisor(s): Nicholas K. Bennett
  • Supervisor License(s): CA-PSY33288

More About Me

  • Languages Spoken: English, Spanish
  • Race(s): Latino, Latinx
  • Gender(s): Cisgender, Man
  • Sexual Orientation(s): Bisexual, Gay, Queer
  • Religion(s): Nonreligious

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