Immunology

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.

News

Pet Allergies? – Dr. O’Brien

Facts about Pet Allergies Ø  More than 70% of U.S. households have a dog or cat. Ø  10% of the general population is allergic

September 22, 2017 read more

We can Tailor your Therapy for Asthma!

There has been a revolution in recent years in the way that Allergist/Immunologists treat asthma.  Asthma is no longer considere

September 7, 2017 read more

Patient Testimonials

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