
Highlights
Age Groups Seen
- Adult 21-65
- Older Adult >65
Languages
- English
Gender
MaleAbout Greg R Decker
About The Provider
Board certified by the California Board of Psychology, Dr. Decker has provided patients mental health care for nearly 20 years. His patients include those with depression, anxiety disorders, bipolar disorder, post-traumatic stress disorder (PTSD) and more. He is dedicated to helping each of them improve their mental health and quality of life.
He also offers a range of care from crisis intervention and psychological evaluation to therapy for individuals, couples and families.
“I am drawn to the field through the service of helping individuals make intentional daily decisions in their lives,” he said. “As they learn to live lives closer to their values, they often show an increased sense of peace and meaning.”
Dr. Decker earned his doctorate in psychology from the University of Kansas in Lawrence followed by an internship with the university’s counseling and psychological services program. Prior to his internship, he completed a practicum, which provided experience with diverse populations, including female inmates, adolescents and veterans.
Throughout his career, Dr. Decker has continued to expand his knowledge and clinical skills with extensive specialized training in cultural and medical areas of concern. Among them are bullying, eating disorders, suicide, self-mutilation and opioid addition to name just a few.
He is fluent in both English and Spanish.
Provider Type
Other
Locations
- Behavioral Health: Adventist Health
- 1025 North Douty Street, Floor 1, Hanford, CA 93230
- Get Directions
- phone: 559-537-0246
Expertise
Education
- Medical School: University of Kansas
Insurance
- Adventist Health Employee Health Plan / Incentive Health
- Aetna
- Blue Cross
- Blue Cross MediCal
- Blue Shield
- Brand New Day - Central Health Plan
- Community Care Health Plan
- Dignity Health
- Foundation Medical Care
- Health Net
- Kern Family Health Care (Kern Health Systems)
- Medi-cal ORP1
- Sante IPA
- Tricare
- TriWest
- United Physicians Network IPA
- Western Growers
Ratings & Reviews
4.7 out of 5
53 ratings, 10 reviewsOur providers are at the heart of delivering whole-person care. We encourage patients to share their experiences through a patient satisfaction survey they receive following visits. Provider star ratings are calculated using patient responses to provider-focused questions in this survey. Please see the provider’s star rating and patient reviews below. Thank you for giving Adventist Health the opportunity to support your best health.
- 5 out of 5 starsReviewed on 3/27/2026
I have recommended Dr Decker to friends and family. He is always listening and giving helpful feedback. Every time I end a session with him, I feel mentally refreshed.
- 5 out of 5 starsReviewed on 3/27/2026
As a person who has not been to therapy in years, I was surprised at how comfortable I was able to be with this provider
- 5 out of 5 starsReviewed on 3/5/2026
I would recommend him to my family and friends he's very good listen and he helps me out a lot
- 5 out of 5 starsReviewed on 2/23/2026
Dr Decker truly is a blessing and asset to Adventist. I had to discuss with him some very serious matters, his approach to it was very caring and helped me come up with a solution. He truly is the best.
- 5 out of 5 starsReviewed on 2/20/2026
Dr Decker is fenominal.
- 5 out of 5 starsReviewed on 1/26/2026
Always have a great experience.
- 5 out of 5 starsReviewed on 10/10/2025
He was great! I would recommend him to friends and family!
- 5 out of 5 starsReviewed on 7/15/2025
Listened intently.
- 5 out of 5 starsReviewed on 5/9/2025
Good
- 5 out of 5 starsReviewed on 5/4/2025
Dr. Decker is caring, empathetic, and makes you feel comfortable