72% of doctors responded. Of these doctors, 93% make the vaccine available to their patients—49% by stocking the vaccine in the office and administering it there, 36% by asking the patient to buy the vaccine in a pharmacy and then administering it in the office, and 33% by referring patients to a pharmacy for vaccine administration (some physicians provide multiple options). 12% of doctors who started administering vaccine in the office have stopped. Doctors identified financial reasons for infrequent use of the herpes zoster vaccine. It is more expensive than most other adult vaccines, with a price of about $200, which may not be covered by insurance. Medicare pays for it with the system it uses to pay pharmacists (Part D), which most doctors are not familiar with, instead of the system it uses to pay doctors for nearly all other services (Part B).