Our
Mission

At OG Health, we deliver concierge-level primary care with the heart of family medicine. Led by Dr. Oswaldo Grenardo — a physician with over 30 years of clinical and executive expertise — our practice keeps patient panels small so you receive unhurried, personalized attention year-round. We offer comprehensive services including chronic disease management, hormone therapy, mental health support, preventive screenings, wellness planning, and weight loss management.

Meet Dr. Grenardo

As a first-generation American raised in Colorado by immigrant parents from Guyana and Poland—both of whom proudly served in the U.S. military—Oswaldo Grenardo, MD, MBA, MSHA, FAAFP, grew up with a deep respect for accountability, service, and cultural diversity. These early influences, coupled with a desire to improve the healthcare experience for underserved individuals, led him to start his own private practice, OG Health, in Greenwood Village, Colorado.

With over 30 years of experience in family medicine and healthcare leadership, Dr. Grenardo brings a unique blend of compassionate, personalized care and executive-level insight to his patients at OG Health, the practice he founded to reflect his vision of whole-person care. He believes great care begins with a genuine relationship—where patients feel seen, heard, and truly known by their physician.

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Personalized Primary Care

Defined by trust, consistent access, and continuity.

Becoming A Patient

Confidence Starts with Caring for You.

Our Services

Direct Access & Responsive Care

Direct physician access by phone, text, and secure communication

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Advanced Primary Care, Prevention & Longevity Medicine

Comprehensive annual wellness exams and executive-style physicals

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Precision Testing & Proactive Risk Assessment

Routine and advanced lab testing tailored to individual health goals and risk profiles

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Metabolic Health, Hormone Optimization & Chronic Disease Management

Longitudinal management of blood pressure, cholesterol, diabetes, thyroid disease, asthma, and other chronic conditions

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Care Coordination, Medical Advocacy & Transitional Support

Thoughtful specialist referrals based on clinical fit, urgency, and patient-specific needs

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Kind words from our patients

Real reviews from real patients.

I highly recommend Dr. Ozzie. He quickly found the top-notch specialist I needed and helped with an early appointment. I had lingered too long with my previous doctor. Dr.Ozzie is very personable, a good listener, and very skilled. I felt an immediate rapport with him.

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William R.

I value Ozzie's meaningful advice and deep knowledge. I'd very much suggest working with him!

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Nick W.

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.

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Rebecca C.

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.

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Brandon M.

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.

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Jeanice P.

Visit Us

Our goal is for you to leave our office with a memorable and enjoyable experience, which is why our welcoming and compassionate staff will do everything they can to make you feel right at home.

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