Dr. Jon Stahlman M.D. and Dedicated Medical Team Serve Lawrenceville GA, and All Surrounding Locations. Our Team of Allergy & Asthma Specialists, and Pediatric Allergists Treat Children & Adults of All Ages. Call (770) 604-1492. Visit Us 565 Old Norcross Rd. Lawrenceville, GA, 30046 Hours: Monday – Thursday 8:30 am – 5:00 pm Phone: (770) 604-1492 Call Clinic Open Hours Appointments Patient Feedback Directions Call Clinic Appointments Directions Open Hours Patient Feedback 3 Locations to Serve You.