Our expert knowledge in immunology allows us to gain significant insight into your specific health conditions.

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Pediatric & Adult Care

Our services cover a broad spectrum in order to provide healthcare to children & adults.

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Allergy & Asthma

Many of our providers are highly experienced in allergy and asthma conditions.

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Clinical Research

We are affiliated with IMMUNOe Research Centers. Find out about our current research studies.

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  • Welcome to Horizon Primary Care

    We are a dedicated practice of medical professionals who pride themselves on offering exceptional primary health care for your entire family. With locations throughout the greater Denver area, our primary care offices offer unparalleled and personal patient care, backed with the science of IMMUNOe’s specialized research and medicine.

    From annual physicals and immunizations to chronic health problems, we operate an enhanced facility with modern technology to ensure every condition is treated with great detail. We also conveniently perform routine and minor emergency care in our office.


Tips for a Happy & Healthy Holiday

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Hidden Food Allergies: What You Should Watch Out For

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Patient Testimonials


I Love Dr. Williams and Emily Wilson!

We love the doctors and staff at Horizon Pediatrics. We have been taking our 6 children to them since our oldest was born 14 years ago. Their love for children has always made us feel welcomed. Despite the fact that we have moved half an hour away, we still make the track to Horizon Peds because they are trustworthy and genuinely care for their patients and parents. They have always made us feel immediately at ease, especially when we're out of our minds with worry for our child. Getting same day appointment has always been fairly easy to do, occasionally they're so busy we have to wait a day, but they always make the effort to get you in as soon as possible. Horizon Pediatrics is the best pediatric care in the Denver Metro area!

Jeff is fabulous. I really enjoy seeing him for my care. I feel like he takes the time to listen to my medical needs without rushing me and is amenable to helping find solutions for them that don't necessarily involve more medicine (which I appreciate).

Emily and Dizney always do an amazing job! I feel confident in talking to Emily in all my health care needs. She is very professional and will joke with you to make things less awkward.


James Doody - He's very good with my son and knowledgeable!

I am very thankful for finding Jeff Mandl with Horizon Primary Care-Thornton for my health care needs. Jeff is very thorough with providing the necessary referrals for my medical conditions, he takes the time to explain things clearly and with professionalism. He allows me to ask questions and to share with him my concerns. I am very much at ease during my appointments. I would highly recommend Jeff Mandl to others whom may be seeking a medical provider for their health needs.

I adore Emily, she is professional and courteous and has a wonderful bedside manner. So happy I changed to your practice!

I'm thankful to have Dr. Wilson as my doctor, I wish every doctor cared as much as she does.

Dr. Emily Wilson is amazing, she really cares for her patients, I know she saved my life, I'm here today because of her!!!

Dr. Williams was thorough, proactive, supportive and as always a pleasure to see despite a sick toddler. I appreciated his diagnosis and promptness with treatment to prevent further infection/disease.

Whitney was friendly, informative and took the time to talk with my daughter and assess her condition and our concerns.

Vera Becka - Great doctor, my daughter loves her!