The present invention provides methods and kits for treating hyperparathyroidism, bone disease and/or hypercalcemic disorders. In particular, methods for lowering serum PTH and serum calcium using polycationic calcium modulator peptides are provided. The calcium modulator peptides can be used to treat subjects having, for example: primary, secondary or tertiary hyperparathyroidism; hypercalcemia of malignancy; metastatic bone disease; or osteoporosis.