Donald R. Erwin, DC is a Sacramento chiropractic practice focused on upper cervical care. The practice uses specific, gentle, minimal-force corrections to realign the C1 and C2 vertebrae and support proper head, neck, and spine alignment. Source notes describe this approach as addressing pressure and irritation affecting the brainstem, cranial nerves, and related structures, and as a chiropractic option for concerns such as vertigo and migraines. Dr. Erwin was born and raised in California's San Joaquin Valley.