Activating SilverSneakers Benefits for Seniors With Osteoarthritis

Inclusion Criteria:

* Aged 65 and older.
* ICD-9 or ICD-10 code for hip, knee, or general osteoarthritis.
* Positive response to a standardized question from the Medical Expenditure Panel Survey that asks if patient was diagnosed with osteoarthritis/arthritis and self-report confirmation of hip and/or knee pain due to their osteoarthritis/arthritis.
* Continuous enrollment for at least one year in a Humana Medicare Advantage plan which provides free SilverSneakers access and both medical and prescription drug coverage.
* Not currently or previously enrolled in SilverSneakers.
* Speak English or Spanish.
* Physical/mental capacity to provide informed consent, based on not having an ICD-9 or ICD-10 code for dementia and being able to answer three questions to verify comprehension of the informed consent form.

Exclusion Criteria:

* Another person in the same household is enrolling/enrolled in the study (to prevent treatment contamination, only one participant per household can participate).
* Medicare/Medicaid dual enrollment due to limited data accessibility for this group.
* Receiving hospice care or under long-term institutional care (Part C) due to limited data accessibility for this group.
* Receiving care from a provider credentialed through a delegated arrangement (i.e., delegated provider), due to limited data accessibility for this group.
* Lack of a valid mailing address in the Humana medical claims databases.