HEALTHeLINK Participants. Physicians and allied health care professionals join HEALTHeLINK every day, so check here frequently to see if your providers have joined HEALTHeLINK, or call (716) 206-0993. HEALTHeLINK is also a Participant in the eHealthExchange which is a network of Participants from across the country including the Veterans ....