Direct patient care=clinical experience. You have lots of options for acquiring it.
Clinical Experience
You can get clinical experience with sick people through the workplace, for class credit, data gathering for a clinical trial, or via volunteerism. It can be gained at a free, family-planning, or private clinic, hospice, hospital, VA, residential home, rehabilitation facility, nursing home, as a first responder, among others.
Clinical patient experience is not always gained in a clinical environment, eg EMT, battle field medic, home hospice care, physical therapy aide, special camp environments. In such a case, you also should acquire some experience in a clinical milieu where doctors work, as specified above.
The advantage of gaining clinical exposure through volunteerism, is that it also is looked on as community service, another unwritten requirement for your application.
Shadowing is a type of clinical exposure, but because it is passive while you observe the role a physician plays (watching how a physician conducts business with patients and staff, takes a history, conducts a physical, counsels and treats, dictates notes, takes phone calls, does paperwork), it is not sufficient in itself. Though you choose voluntarily to shadow, it is not a "volunteer" experience, as it does not serve the patient. You need to get in this type of experience in addition to the above.