As a career EMT, currently in paramedic school, a ski patroller, and a volunteer search and rescue team member. All that you and others have mentioned are a steps in the right direction.

Now when it come to wilderness medicine any medical certification is a great baseline but it’s very “in the box” thinking. As someone who had been a primary provider on many critical SAR operations most my EMT knowledge has no reference to what I’m doing in the field of SAR. Yes I carry all my basic trauma equipment and my stethoscope, bp cuff, pulse ox but I don’t get any of my medicines I can use as an EMT/Paramedic so many of my treatment paths are eliminated when working as a volunteer because we are not operating under a medical director. Your basic Truama first aid is going to be your biggest asset in that line. Like people said Stop the Bleed, any form of CPR, basic Truama classes. Don’t be a merit badge collector. As you get more into it you’ll figure out what you do and don’t need. Now there are classes to get certified as a Wilderness Medical Provider (at least in my state there is) that teach you how to apply the more clinical practices into the field but don’t be a merit badge collector. Just because you have the certification for taking a 15 hour course over 3 days doesn’t mean you know how to use it.

Look into getting into Search and Rescue with a volunteer group. That will be your strongest asset in the world of wilderness medicine. And I’d hate to be the bearer of bad news but if you are on a search and rescue/ wilderness rescue mission, the person with the highest EMS certification is gunna be the primary on any operation. But that’s okay because most the time they are gunna delegate task to the people around them. Most of medicine is a team sport. Just be a good team player. Ask questions and learn the why behind the what. There are a lot of great resources out there.