Physician Availability Act of 1999 - Requires each non-Federal hospital with a specified participation agreement under title XVIII (Medicare) of the Social Security Act, participating under title XIX (Medicaid) of such Act, or receiving Federal funds, and with at least 100 licensed beds, to have a qualified physician available in the hospital (other than in the emergency department) 24 hours a day, seven days a week to attend to the hospital's inpatients. Provides for enforcement, including through civil penalties and suspension or disqualification from Medicare or Medicaid.