A History of Service & Success

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Established in 1973 by Fannie Lou Leney, M.D. as a pediatric allergy facility, the Northwest Allergy Clinic was located in the United Founders Medical Building.  In 1977, John L. Davis, M.D. purchased the Clinic and moved it to the Baptist Medical Center campus.

In the early 1990’s, the Clinic relocated to the Deaconess North Medical Office, where it remained until 2007 when Jason Sigmon, M.D. assumed the leadership role of the clinic from the retiring Dr. Davis.

Under Dr. Sigmon’s leadership the clinic name was change to Northwest Sinus and Allergy Clinic to better reflect its expanded care.  Our office is currently located on the INTEGRIS Baptist campus at 3435 NW 56th, Suite 300.

The Northwest Sinus & Allergy Clinic represents a bold step forward to help alleviate the sneezing, suffering and sinus problems that adversely affect thousands of Oklahomans.  We can help you take charge of the allergy and sinus problems that threaten to compromise your overall health and threaten the quality of your life.

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1973 – Northwest Allergy Clinic established by Fannie Lou Leney, M.D.

1977 – Allergy Clinic purchased by John L. Davis, M.D.

1982 – Hundreds of Oklahomans have been treated for seasonal allergy disorders

1993 – Northwest Allergy Clinic celebrates 20 years

2007 – Dr. Davis retires; Jason Sigmon, M.D. takes ownership of Clinic

2008 – To better reflect its mission, Dr. Sigmon re-names the practice to Northwest Sinus & Allergy Clinic

2011 – Northwest Allergy Clinic moves to a more convenient location at 3330 NW 56th Street, Suite 110 in  Oklahoma City, OK  73112