About Us

At our practice, your health is paramount. We prioritize trust and open dialogue, and with empathy and innovation, we guide you towards optimal health and improved well-being.

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Dr. Gustavo H. Day M.D.

The benevolence and fulfilment Gustavo and Mariana derive from assisting others have enabled their practice to thrive over the last twenty years, growing stronger than ever before.

At Dr. Gustavo H. Day’s practice, fostering a reliable bond of wellness between the doctor and the patient is paramount. This opens the door to creating a partnership that leads to overall health and ease. His practice’s goal is to partake in proficient patient care, encompassing both inpatient and outpatient treatments, with a focus on enhancing the quality of care and preventive medicine.

Dr. Gustavo H. Day M.D

Medical Director

Tejinder Gill

Family Nurse Practitioner

Melissa Garcia

Family Nurse Practitioner

Matias H. Day

Chief Operating Officer

Diego Arroyave

Executive Assistant

Joycelyn Jimenez

Front Desk Supervisor

Florencia Meza

Clinical Team Lead

Antonio Bobadilla

Testing Facility Supervisor

Renaud Francois

Laboratory Technologist

Paola Torres

Referral Coordinator

Citlali Espinoza

Medication Coordinator

Tamika Garrett


Agustina Videla
Agustina Videla

Video Electroencephalogram (VEEG) Technician

Heartfelt Testimonials from Our Satisfied Patients

Discover How Our Care Has Transformed Lives and Impacted Well-Being of our Patients

“He was everything that I needed at that particular moment.”


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“He actually takes the time to explain things to you on a level where a lot of physicians wouldn’t do.”


Bonnie Fischer
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Dr Day is the best physician i have ever encountered in my life. He is very patient, caring and understanding. Dr Day wants to find the root cause of his parents medical issues. I am so thankful and blessed to have found him. Also his entire staff is Awesome.
Rebecca Kilgore-Fields
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Dr. Day is truly a diamond in the rough. It's not often to find a Doctor that genuinely cares and provide the very best treatment for his patients. Regardless of the workload & patients waiting to see him, he gives me his undivided attention and takes the time to really listen to my health concerns and overall well-being in every aspect. Additionally, his entire office staff are always kind as well as efficient and organized. I appreciate Dr. Day very much.
Alex Goodemoot
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Dr. Day is refreshing as he is straight forward and doesn't mince words. Unlike most of my other healthcare experiences you know exactly what you're getting. They provide exactly what I'm looking for when I'm looking for any service. They make it extremely easy for prescription refills and referrals. I would recommend Dr. Day to anyone looking.