Allergy and Asthma Adult and Pediatric Medical Group of the Redwoods is in the same building as North Bay Drywall & Plastering. Its physicians, Roger Barron, M.D., and Michael Martin, M.D., are experts in treating health problems related to allergies. Your first visit will include an allergy skin test to help determine the cause of your symptoms, and a treatment plan. Patients can also make appointments at the Santa Rosa office.