Harvest Health & Rehab of Johns Island, LLC. Harvest Health & Rehab of Johns Island, LLC. is located on 3647 Maybank Hwy in Johns Island. They can be reached by phone by calling (843) 559-5888 or by going to their website . They can be reached by calling (843) 559-5888 or going to their website . They have not yet been reviewed on MojoPages.com.