HVI Patient Portal Frequently Asked Questions Document Q: Who do I call when I am locked out? A: You can call 609-660-9729 M-F 7:45am to 7:00pm Q: When will I get a call back after requesting an appointment? A: Call back within 12 business hours. Q: What are HVI scheduling hours? A: 7:45am to 5:30pm Q: What insurances does HVI accept?.