I think the best way to get good sources of clients is to create real relationships with them.
There's a challenge in this as health care practitioners are often immersed in their own businesses and practices that they can't see easily past it.
I find the genuine, real and honest connection works the best. Be yourself and be bold and lay it on the line... say to the person you want a referal from to give it to you strait. You basically want them to think of YOU as someone who can help their clients.
That could be a combo of personal chemistry and flow with the doctor in question as well as how much you are getting in their consciousness.
You've got to be really really clear about what you want from them and be very bold in asking them if they can give it to you. Look at all the nitty gritty like location or your technique or what.
If you can't go the personal connection and chemistry route - them go for the uber-professional massage therapist route and send material about yourself and your practice to their office ALL THE TIME. Send them articles and newletters. Visit the office phsically.
You got to get in their heads. You have to think of ways you can be on their minds when they think of the ailments of their clients.
big things could be monthly chair gigs in the waiting room. staff and office appreciation chair gigs.
medium sized things would be your sweet-looking marketing materials sent to their office. Always stating clearly how your massage can help, what it can help, how to find you and maybe some citchy little piece of massage advice thrown in.
Send personal emails to the doc saying hello, how are you. Always check up on the relationship and say "hey, I have noticed you have not sent me any clients, is there any way I could help you think of me when you are helping your clients?"
heck - tell them you are in need of cash flow, pure and simple: "hey would you mind sending some clients my way - I'm getting slow and I could really use the financial support of a more bookings"
see if they respond. see HOW they respond. The next thing to consider is making new contacts ALL the TIME.
meet new practitioners, reach out, ask for what you want and follow up.
Massage therapists often have the reputation of being flaky - show them they can rely on you by following up QUICKLY.
Send newsletter emails to all the staff of the office - short messages on how massage is great for such and such along with a case study - not more than a few paragraphs, contact info and always get permission to send stuff.
it's trickle affect. These guys are friggin busy. They have a billion things to consider everytime they see a client and you just have to get into their heads and figure out how to get YOU to come to their minds when they are seeing their clients.
how about the magic of a referal pad of paper that has your logo and contact info along with blank spaces for client name, number of massages and diagnostic codes, pip claim codes and other such nonsense.
-or just a plain pad of paper with your logo at the top - that says "massage referal" at the top. you can give this to them to help them keep you in mind.
imagine how powerful it would be to have a referral notepad sitting on the desk of their examination room and it has your logo at the top with all your contact info.
it's the little things.
just build them up over time.
overall - I would say - come across as a real person and not just the identity of LMP. you just get lost in the shuffle if you do that. Make an impression and look for good chemistry. give up on the contact if they seem cold, flaky, looking down on you or just blowing smoke up your butt. check your gut - does this person seem to really be hearing me, do they seem truly interested in me and my work or are they just getting a free massage out of me?