My approach may not be common, yet, but I guarantee patients would not only embrace the portal but they would visit frequently and interact.
Provide a simple point incentive system that is easy to understand and easy to accumulate points for healthy choices, lifestyle changes and compliance with medical directives. Set rewards for point levels such as umbrellas, t-shirts, gift cards to local establishments and have automatic entries into drawings for larger prizes at lower tiers of participation. Make awarding the winners a BIG deal around the office and with online communications to patients.
HIPAA concerns can be assuaged by stripping out health information and using patient selected usernames. The portal can be a fun, informative and valuable resource for patients and better for you a wealth of data that can be used to shape patient communication and outcomes tracking.
If you would like to learn more please reach out and I would be happy to help flesh out the concept for your practice. I have seen a variant of this in use at Orthodontic offices where children are encouraged and rewarded for specific activities beneficial to their appliances. The outcomes have been excellent.

I agree with both comments previously made. One additional consideration when thinking about the developement of the patient portal is intended outcome. Many acute environments are looking to leverage a patient portal to not only provide guidance a long their care journey, but also to reduce the number of calls that need 1:1 support through the patient services group. Additionally, provider and payers are beginning to embrace the value of the patient portal to drive health and wellness behavior This could include not only care coordination support for timely scheduling, but also wellness, diet, and speciality pharmacy support to insure protocol adherence.

Create a straightforward points incentive system that is easy to grasp and allows for easy accumulation of points for making healthy choices, adopting doodle jump game lifestyle changes, and adhering to medical recommendations.

I'm curious about how banks envision the 'branch of the future.' With digital services growing fast, will physical branches offer something unique, or just fade out? nano banana