Click on any of the logos below to order supplements. For Wholescripts, enter code “drcatjohnson” for preferred pricing. For Microbiome labs, enter code “healthspan”

The right treatment, for the right person,
at the right time.
23 Walker Avenue
Clarendon Hills, Illinois 60514
Fax: 312-736-9556
Hours are flexible, by appointment


The right treatment, for the right person,
at the right time.
365 Fifth Avenue South Suite 220
Naples, FL 34102
Fax: 312-736-9556
Hours are flexible, by appointment