UPMC Pinnacle Littlestown Primary Care. Littlestown Professional Center. 300 W. King St. Littlestown, PA 17340. Phone: 717-359-9214. Nurse Advice Line: 866-968-7731. Fax: 717-646-7423. UPMC Pinnacle Littlestown Primary Care (formerly Hanover Medical Group Family Medicine - Littlestown) can meet all your primary care and family medicine ....