The reviews listed below were collected independently of Gonzaba Medical Group through rater8. Each review represents an authentic and verified patient experience.
Excellent service
(5 days ago)
Apr-2026
We are grateful for Dr. Diaz. She is trying very hard to work with my aunt. My aunt is extremely difficult. We truly appreciate your whole group.
(6 days ago)
Apr-2026
Very considerate
(1 week ago)
Apr-2026
Love her
(2 weeks ago)
Apr-2026
She is good at what she does
(2 weeks ago)
Apr-2026
Friendly
(3 weeks ago)
Apr-2026
She’s the best
(3 weeks ago)
Mar-2026
Best doctor I’ve ever had.
(1 month ago)
Mar-2026
Yes
(1 month ago)
Mar-2026
She’s awesome, she explains til I understand and I like that about her. She remembered me from my 1st visit and I was surprised that she remembered
Dr. Melissa Martinez-Diaz is Board Certified in Internal Medicine. A native of Las Piedras, Puerto Rico, Dr. Martinez-Diaz attended medical school in Guadalajara, Mexico where she graduated in the top 15% of her class.
She went on to complete her Internal Medicine Residency at Mount Sinai School of Medicine at Elmhurst Hospital Center in Queens, New York in 2004. Dr. Martinez-Diaz joins Gonzaba Medical Group after practicing medicine in Harlingen/Brownsville, Texas.
She has received the Medical Student Excellence Award, Master Teacher Participation Award for excellence in medical teaching to residents and medical students, and was named Clinical Assistant Professor at the University of Texas Health Science Center at San Antonio, to name a few.
Excellent service
We are grateful for Dr. Diaz. She is trying very hard to work with my aunt. My aunt is extremely difficult. We truly appreciate your whole group.
Very considerate
Love her
She is good at what she does
Friendly
She’s the best
Best doctor I’ve ever had.
Yes
She’s awesome, she explains til I understand and I like that about her. She remembered me from my 1st visit and I was surprised that she remembered