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Patients Reviews
"Dr. Grenardo has been our family physician and trusted doctor for over 21 years. He consistently provides exceptional care for a wide range of medical issues. His promptness ensures we are never left waiting and his caring demeanor always makes us feel comfortable sharing important health information. He listens attentively and offers thoughtful, effective solutions. We are grateful for his dedication and highly recommend him to anyone seeking a reliable, compassionate physician."
Jeanice Prohs
"Dr. Ozzie Grenardo has been more than just our family doctor; he has been a trusted friend for over 24 years. In every medical situation our family has faced, he is the first person I turn to. Dr. Grenardo's kindness and patience shine through in each appointment, making even the most challenging situations feel manageable. What truly sets him apart is his incredible depth of knowledge and ability to communicate complex medical information in an accessible way. He takes the time to ensure that we fully understand our options, empowering us to make informed decisions about our health. Dr. Grenardo doesn’t just treat his patients; he genuinely cares about their wellbeing. His consistent check-ins and personalized follow-ups demonstrate his commitment to not just our health, but to our peace of mind. With Dr. Grenardo, you are not just another patient; you are part of a family. It’s rare to find a physician who combines expertise with such heartfelt dedication. I wholeheartedly recommend him to anyone looking for compassionate and exceptional healthcare. Thank you, Dr. Ozzie, for always being there for us!"
Dana Monson
"Dr. Grenardo have been an absolute cornerstone of our family's well-being for over two decades, and it's no exaggeration to say he's simply the best. Beyond his exceptional medical expertise, Dr. Grenardo possesses a profound sense of humanity that sets him apart. For 20 years, he has consistently provided not just medical care, but genuine compassion, understanding, and unwavering support. He has seen us through countless sniffles, fevers, injuries, and more serious health concerns, always approaching each situation with patience and a calm demeanor. What truly makes Dr. Grenardo remarkable is his ability to connect with every member of our family on a personal level. He listens intently, explains things clearly, and makes sure we feel heard and understood. More than just a doctor, Dr. Grenardo has become a trusted confidant and a truly invaluable part of our lives. His dedication to his patients goes above and beyond, and we feel incredibly fortunate to have had him care for us for so long. If you're looking for a physician who combines top-tier medical knowledge with an unparalleled level of kindness and integrity, look no further than Dr. Grenardo at OG Health. He is, without a doubt, the best human I know."
Brandon Monson
"A Lifelong Friend and Truly Exceptional Physician I’ve known Dr. Ozzie Grenardo since the third grade, and I can say without hesitation that he is one of the most selfless, compassionate, and loyal people I’ve ever met. Over the decades, our friendship has grown into something truly special — he is the Godfather to two of my children and the confirmation sponsor to the third (who proudly considers him her Godfather as well). To our family, he is not just a friend; he’s family. My parents even refer to him as their “second son.” Ozzie has always been extraordinarily gracious to those around him. No matter how busy his life or career becomes, he consistently makes time for the people who need him. Whether it’s dropping everything to help in a moment of need or making the effort to keep lifelong friendships thriving, he does it all with humility and warmth. He’s the kind of person who quietly holds entire communities of people together — and somehow makes it look effortless. As a father, he has poured his heart into raising his daughter with the same integrity, love, and dedication that he brings to every other aspect of his life. And now, as he embarks on a new chapter — launching his own concierge medical practice through OGHealth.org — I can’t think of a more fitting evolution for someone who has always prioritized personal connection and individualized care. Ozzie doesn’t just treat symptoms — he cares for the whole person. If you are looking for a doctor who listens, who genuinely knows and remembers you, and who will walk alongside you through life’s ups and downs, there’s no one better. I love the guy — and once you meet him, I think you will too."
Erick Prohs
"I've had the privilege of knowing Dr. Ozzie Grenardo before his medical school days, and over the years, I've consistently turned to him for medical advice. From routine concerns like my annual sinus infections to more profound emotional challenges experienced with my children during their growing adolescent years, Ozzie has always been a compassionate and attentive listener. He takes the time to ask thoughtful questions, ensuring he fully understands the situation before offering guidance. His responses are prompt, and he never makes me feel rushed or burdensome—even when I might be testing his patience. What truly sets Ozzie apart is his unwavering zest and compassion for medicine, which have only deepened over time. I'm thrilled to see him channeling this passion into the launch of OG Health, a concierge family medicine practice. This new venture allows him to offer personalized, whole-person care, building deeper relationships with a limited number of patients. It's a testament to his commitment to providing individualized care that addresses both modern medical approaches and alternative methods when appropriate. My family and I have benefited from Ozzie's expertise and friendship for years, and we look forward to continuing this relationship for many more to come. If you're seeking a physician who combines clinical excellence with genuine compassion, Dr. Ozzie Grenardo is unparalleled."
Jennifer Flores
"Dr. Ozzie Grenardo is a great physician and a great person. I have known him for more than 10 years, as both my primary care physician and later as my friend. Of course, he is industrious, smart, driven, honest, and accomplished. However, I believe I can speak more confidently about Dr. Grenardo’s other qualities that contribute to his clinical success. Always an approachable professional, he shows his patients empathy, compassion, humility, and a warm smile. 

As a woman, we are often subjected to dismissal, minimization, and disbelief by the medical profession. But while in Dr. Grenardo’s presence, as a patient, I felt heard and valued. He trusted my knowledge about my body. And when I would say something is wrong, he would not judge me nor doubt me. Because he is humble and empathetic, Dr. Grenardo does not enter the room as though he descended from a white-coated tower of pretentiousness. Rather, he remains grounded in what he believes is his mission: meeting the patient at the moment of their need, providing them with the best of his ability and knowledge, and being of service to his family, his patients, his community, and his profession.

I moved to Colorado from the East Coast. I quickly realized I needed a primary care physician in the community to fill in for what was lacking at the VA Medical Center. I developed a couple of complicated illnesses. I had not yet found anyone I could trust at the VA. There were times when I needed to talk with someone about a recommended treatment plan. I brought these concerns and fears to Dr. Grenardo. He listened to all my reasons why I felt uncertain and
obstinate about the plan, smiling and laughing with me as I joked about the specialists. 

Most importantly, he asked me what I wanted to do, rather than telling me what I should be doing. Then, after saying a few well-chosen words--words he knew would register with me--he had managed to convince me the plan was the best thing since sliced bread. Dr. Grenardo also assured me that if things did not work out for the best results, he had my back. I could depend on him to be with me to make the next decisions and to take the next steps. And he was. And he still is. When I chose Dr. Grenardo as a primary care physician, I received so much more than I thought I would ever need or want. And I am forever grateful."
Cypriane Williams
"I’ve been a patient of Dr. Grenardo since I was 16 years old, I’m now 35 and I’ve followed him wherever he’s gone throughout the years. You don’t come across doctors like him often. He truly listens, cares deeply about his patients as individuals, and takes the time to go through every detail to make sure you’re receiving the right treatment.

Dr. Grenardo has always respected and trusted that I know my body best, and he’s worked alongside me to find real solutions when something wasn’t right. He has helped me through incredibly difficult times managing chronic anxiety, supporting my mental health, and helping me navigate more complex conditions like an autoimmune disease and POTS.
His level of compassion, thoroughness, and advocacy is unmatched. Dr. Grenardo is the definition of what a doctor should be, and I feel incredibly grateful to have him by my side. If you’re looking for a doctor who will truly be in your corner, look no further."
Becca Dudley