Sorry !. No ADRs from Dominican Republic trade on any of the US markets as of July, 2016.
Dominican Republic Dividend Withholding Tax Rates for US investors as of Jan,2016:
1.Dividend Withholding Tax for Regular Accounts: 10.0%
2.Dividend Withholding Tax for Retirement Accounts (401K, Roth IRA, Traditional IRA, etc.): 10.0%
A Beach in DR