Guillermo Madero, M.D.

Practice: Gonzaba Medical Group

Specialty: Internal Medicine: Geriatrics

Office locations: San Antonio, TX

Most recent review: 4 days ago New
4.9 out of 5
1.5K Ratings
633 Comments

Dr. Guillermo Madero graduated from the University of Monterrey Mexico, where he received his medical degree. After living in Mexico for 25 years, and with only two pieces of luggage, Dr. Madero moved to New York City for his residency and fellowship at Staten Island University Hospital. Dr. Madero started with Gonzaba Medical Group in 2021.

4.9 out of 5
1.5K Ratings
633 Comments

Dr. Guillermo Madero graduated from the University of Monterrey Mexico, where he received his medical degree. After living in Mexico for 25 years, and with only two pieces of luggage, Dr. Madero moved to New York City for his residency and fellowship at Staten Island University Hospital. Dr. Madero started with Gonzaba Medical Group in 2021.

The reviews listed below were collected independently of Gonzaba Medical Group through rater8. Each review represents an authentic and verified patient experience.

Excellent !!!

Rated 5 out of 5 stars
(4 days ago) Oct-2026

very informative

Rated 5 out of 5 stars
(2 weeks ago) Oct-2026

Great doctor very attentive..

Rated 5 out of 5 stars
(2 weeks ago) Oct-2026

My First Visit it was Amazing I felt very Welcomed and I Appreciate all your Hard Work Thank You🙏🏼

Rated 5 out of 5 stars
(3 weeks ago) Oct-2026

All went well with my vitals. Just need a couple of things to get done Very positive outlook.

Rated 5 out of 5 stars
(1 month ago) Sep-2026

Top notch Dr. Very through and listens. I highly recommend.

Rated 5 out of 5 stars
(1 month ago) Sep-2026

Very through

Rated 4 out of 5 stars
(1 month ago) Sep-2026

I can't say enough about Dr. Madero He always takes the time to ask how everything is going with you and to explain your labs Excellent Dr.

Rated 5 out of 5 stars
(1 month ago) Sep-2026

My doctor was very attentive to my concerns.

Rated 5 out of 5 stars
(1 month ago) Sep-2026

Thank You for being so kind and helpful,

Rated 5 out of 5 stars
(1 month ago) Aug-2026
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