Dr. Frederick J. Piwko MD. Caredash.com DA: 16 PA: 42 MOZ Rank: 59. MD (he/him) is a highly-rated family physician in Lockport, NY; He is rated 4.7 out of 5 by patients on CareDash and has received an overall patient experience rating of 3.7 out of 5; For new and existing patients, please see recommendations on how to schedule an appointment with Dr.