| NOF | National Osteopathic Foundation; National Osteoporosis Foundation |
|---|---|
| NPA | National Pharmaceutical Association; National Pituitary Agency; near point accommodation; Nurse Prac... |
| NPA-NIHHDP | National Pituitary Agency-National Institutes of Health Hormone Distribution Program |
| NRC | National Research Council; National Response Center; normal retinal correspondence; not routine care... |
| NRCC | National Registry in Clinical Chemistry; National Research Council of Canada |