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Claudia Diez PhD, ABPP

Clinical and Consulting PsychologistRelational CoachNew York City, Connecticut

Board Certified by the American Board of Professional Psychology (ABPP)Assistant Professor (Psychiatry), Icahn School of Medicine at Mount Sinai Medical Center
Terry Real's Relational Life Couple TherapistRelational CoachWorking with couples, professional dyads, co-founders, partnersNYS License # 017761Connecticut License # 4486

Executive coaching

About Dr. Claudia Diez

Dr. Claudia Diez is a consulting and clinical psychologist in private practice. She has expertise in individual psychotherapy for adults, couples counseling, and coaching for working dyads (cofounders, business partners, friends, or family working together.)
Years of intensive hospital experience led to her peer-recognized keen diagnostic and therapeutic skills; extensive private practice led her to specialize in facilitating interpersonal awareness and change, with focus on couples' conflicts and relational coaching.
Having trained in most major lines of psychotherapy (Psychodynamic, CBT, AEDP, interpersonal, EFT, and Terry Real's Relationa Life Therapy among others), she integrates them moment by moment as is the best fit, a flexibility that allows optimal interventions. A decade of work with couples, dyads and groups culminated in her adoption of Terry Real's Relational Life Therapy Model for couples work, the most effective methodology for change among individuals experiencing conflict in their close relationships, whether intimate or professional. Dr Diez is a psychedelic treatment researcher and explorer. In 2024, upon legislation allowing the use of psychedelics like Ketamine, Psylocibin and MDMA in professional settings she will offer couples and group retreats for psychedelics assisted sessions. Contact us about the upcoming retreats in Hudson Valley, NY, starting in June 2024.

Self-esteem psychologist

Dr. Diez has extensive experience working with a broad range of needs, including:

● Relationship conflicts (work, partners, family)
● Self-esteem and identity conflicts
● Performance impediments
● Mood and Anxiety Disturbances
● Intimacy, Sexuality
● Traumatic experiences

Self-esteem psychologist

Psychological Services in NYC

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A word from my clients

"Working with Dr. Diez has profoundly affected me for the best. When we first met, I was on a number of psychotropic medications, depressed, chronically fatigued, and unable to work. After two years of twice-weekly sessions, I am a new person. I am now able to tolerate challenging emotions and experiences, engage practically with interpersonal dynamics, and I am back on track with my career. I did not know that this would have been possible for me. From the very beginning, Dr. Diez was direct, honest, and ready to help me reach for what I most needed. I am eternally grateful for the support she gave me in reclaiming my life."


May 19, 2019

"This review is long overdue. Dr. Diez was my therapist from summer 2015 until February 2019, when work moved me across the country. During that time Dr. Diez was a truly wonderful therapist who provided constant support. She was a coach, advisor, and confidant and I don't know what I would have done without her. Over a year since leaving town and I still miss her! Highest recommendation."

Patrick F.

May 27, 2020

"My wife and I were disappointed with prior couples therapist before finding Dr. Diez. She quickly noticed conflicts beneath the surface, unspoken and taboo until then. She quickly helped us learn to communicate, instead of arguing about frivolous issues - She turned our trajectory from disaster to recovery in a few meetings. Not to say the journey is over, but we are changing our ways, and that gives us hope to fix our marriage and enjoy the rest of our life together. We feel indebted to Dr. Diez. She is an excellent marriage counselor."

Jeff B.

April 19, 2020

"Claudia is a top-notch therapist. She makes the effort to listen, help you process your emotions, and helps you arrive at a concrete plan to move forward. I highly recommend her!"

Lance K.

April 21, 2020

"I’m so lucky to have met Dr. Diez. After years-long frustrating (to say the least) search for a good therapist, I finally came to her office, and my search stopped. She is very professional, at the same time you always feel welcome: she greets you with a beautiful smile, then proceeds to actively listen to you, with the calm intensity of care. She gently guides you to find your own path to clarity. She is patient and thoughtful. I’m very grateful to have met her."

Cristina S.

May 09, 2019

Contact Dr. Diez

Consultations are by appointment only.

New York City Office Location:● 928 Broadway, New York City. NY 10010Connecticut office: ● Salisbury, Lakeville, Sharon area. For appointments please call (212) 744-8073 or email us at moc.zeidaidualcrd%40ofni
*Due to an unusually high volume of appointment requests we may not always be able to return calls promptly. If your call was not returned within two days, Dr. Diez may be fully booked and unable to take new patients.