Dr. Barbara M. Showalter Return to Central California Businesses Directory Dr. Barbara M. Showalter Claim Listing Return to Central California Businesses Directory Description Details Address 1114 Olivewood Dr. City Merced State California ZIP Code 95348 Phone 209-723-7761 Listing Category Family Practice Doctor - Listings Please login to claim this listing. Username*: Email*: Password*: Log in | Lost your password?