Sugarloaf Medical PC: Internal Medicine - Primary Care. The Plaza at Suwanee Station. 1300 Peachtree Industrial Blvd. Suite 4203. Suwanee, GA 30024. Phone: 770-831-3018. Fax: 770-831-3669. Located 1.5 miles north of Sugarloaf Parkway (Duluth) and ½ mile south of McGinnis Ferry Road (Suwanee).