Dean Health Plan, Inc. is a HMO/HMO-POS with a Medicare contract. Enrollment in Dean Health Plan, Inc. depends on contract renewal. Dean Health Plan markets under the names Dean Advantage and Prevea360 Medicare Advantage. This information is not a complete description of benefits. Call 1-877-234-0126 (TTY: 711) for more information. You must continue to pay your Medicare Part B premium.