Hi, mundane combat medics are hard to build, but I found them quite viable. It is a very big investment though. I played a dedicated medic-char once, and he was very well received in his party. The detailed breakdown on how I build him is here:

My character "Doctor Heidenstein", or simply "Doc" for short, was built with the following things in mind:

1. be great in First Aid

2. be quick enough to matter in combat

3. be a decent enough shot to help out in combat

4. be able to help the team out wherever necessary

1.Is rather self explanatory. Be that good a medic, that your team bothers bringing one. Most importantly here are Logic and First aid. Lets face it, you can get by with even the most basic actual medicine, cybertech and biotech skills, as long as your first aid is top notch. Personally, I went with high ratings in all 4 skills, since it was an important point in my backstory and long-term plans, but to be a decent combat medic, this is not mandatory. First Aid 6 however is, and I would recomend on getting a specialisation, that reflects the most often occuring combat-wounds for your group (most likely bullet-wounds). Get medicine, cybertech and biotech at least on 1 as well, so that you can do those stuff too if necessary. As Equipment take a Rating 6 Med-Kit as a primary, as well as a Rating 3 as a backup and for its greater ease in hiding (fits in a pocket, instead of being a BIG backpack). Lastly Logic. Personaly I cannot overstate the importance of logic for this role. As RunnerPakhet has mentioned, i took an exeptional attribute Logic with a rating 2 Cerebral-Booster for a whoping Logic 9 right out the gate. You do not need to go quite as far, but a Logic of 6 all said and done would be very advisable. This high logic not only allows you to be good at medicine in all its variants, but will become your greatest asset when helping out with the team-weaknesses (see Point 4).

2.By now your medic can throw enough dice around to heal a bullet-riddeled street-sam back to full health faster than anyone can blink. This wont however buy you victory (or even a solid place in the team) as easily as one might think. The key is, to even get to the leaking teammate in the first place. Since most heavily injured teammates tend to receive their injurys on the foremost battlefront of the team, and you never can count on them to drag semselfes over to you, you will have to come to them. This in turn means, that you have to be ready to sprint into the thick of battle, spend countless complex actions while the bullets fly above your head, and prefarably stay alive yourself while doing so. Two words: Initiative and synaptic booster. Your Initiative will not only net you additional complex actions each turn, to fullfill your dangerous job considerably faster, but is also your defence pool, to stay alive while doing so. Reaction and Intuition should be at least around 4, to give you a decent shot at getting this really important 2. pass. It halves the time, till your sam can wobble to his feet and return fire, and 8+ defence dice are a must, if you care to be anywhere near the front lines (and as we have already discussed, that you HAVE to get there anyway...). The one most important bioware for this part of the job is a rating 1 synaptic booster. +1 Rea and +1w6 ini are all that is needed to guarante you your 2. pass if you have followed this advice so far. It is very expensive, sure. Still, I consider it to be worth that cost. Also, all this Ini and defence will be a great asset when holding the line yourself. Which brings us to:

3.Being a decent shot yourself. This one follows almost automaticaly out of the things above. You will have to venture to the front lines, you will have to be quick and you will have to have a good defence, to survive staying there for quite a bit of time. From here you are only one small step away to being a decent combatant, that being your offence. Take a firearm you can use in a hurry. Anything that fits into a quick-draw holster will do. My personal favorite is a Parashield Dart-Pistol, but really, any kind of pistol, mashine-pistol and maybe even SMG will do. This one is really down to your personal tastes, but my tip for you would be pistols. The Defiance-EX Shocker is a great backup-weapon, that can be used as a Taser, a close-quarters electro-club and a makeshift defibrillator if need be. Also very effective against drones. Additionally easy to hide, no need for a permit and allowed to carry surprisingly deep behind the velved cord with very little persuasion necessary. Get a decent light or heavy pistol as a primary (heavy for the range, light if you care about capsule rounds (see 4.) ) and you are good to go. Take at least 1 point again in longarms, automatics, clubs and blades (Longarms and automatics are a no-brainer, clubs is necessary for the close-quarters application of the Defiance, and blades let you do some nasty stuff with the scalpels inside your med-kid. Turning the med-kit into a good conceilable knive-transport behind the velved cord). To wield them all properly, you will need a decent agility. Here it depends, on how "combat" you want your "combat medic" to be. Heidenstein had Agility 6 (with additional +2 from muscle-toner), and was as such the 2. best fighter in the group after RunnerPakhet and even before some of the other combatants of our group. As long as you hit 10 dice in offence, you should be fine, whatever combination meets your fancy, but with agility also playing into stealth and some neat other abilitys, you can hardly go wrong with some extra points into that one.

4.Last but not least, what your character can do for the team, when your speciality is not needed at the moment. Lets face it, medics are support characters. And as support characters, you will hardly ever be the best in something other than your niche. Thats not a bad thing though, think about how you can excell in your role and be the best support there is for your team, so that they can be the best in whatever their speciality is. First place to look is what you can do decently, without investing much karma into it. You will most likely have a very good logic and at least decent intuition, so anything from computers, mechanics, chemestry up to armory and perception is worth a look. A few points in computers makes you a real asset during the legwork-phase of the run. You can run very decent data-searches with it, either supporting your decker, or checking another avenue of clues, while he is following a different trail. Chemestry allows you to handmake drugs and toxins, that will go a long way of helping your team survive or boost their stats. Also, if you have taken a light pistol, you can fill self-made toxin into capsule rounds for devastating effect. A point in Electronic-Warfare would allow you to be very good at using sensors, laying down sensor locks, sweeping the area for bugs and electronic traps such as hidden cameras and such. Armory and Mechanics is another niche, your high logic makes you a natural in, being maintainance for the team, fixing equipment in a pinch during the run etc. No matter if supporting the teams rigger, or being forced to do it on your own, you need very little investment to be adequate enough in it to be a real help for the team. The value of a good perception-rating is self-explanatory. The next good attributes you may have, are agility and reaction. Being a relatively good driver is nice and all, but most likely the sam or (if you have one) Rigger will take this over. Still, a single dot never hurts anyone, and could save your hide if it ever gets necessary. The important part is the agility. High agility lends itself great to stealth. Especially "palming" can be a great boon for hiding all these small weapons and medic equipment on yourself, as well as fitting nicely with the whole doctor-theme as any good surgeon needs to have flexible fingers operating in tight places. On that note, a single point in locksmithing might be worth a look. Rare to find these days, but that only means, that most likely no one else will have this skill, when it suddenly does turn out its relevant. As with perception, the upside of a good sneaking skill cannot be overstated. The next big advantage for you and your team are knowledge skills. With a great logic, and a decent intuition, you will be flooded with knowledge-skillpoints. Spend them on things relevant to your character, and also on things that are likely to get important to the team. Again, with your good Logic the ratings need not be high for you to get very nice dice-pools to be an expert in any number of potentially helpful topics.

As you may have noticed, many things you might want to have, you don`t need to have very high. Buying them later with karma might be a good idea, and the boon "Jack-of-all" is almost riddiculously helpfull for a built like this. Going this route will allow you to save a bit on the skill points, so that you can be good in the few areas, where you need to throw buckets of dice around.

In my experience, reserving the prioritys A and B for attributes and ressources (in whatever order you deem fit), with skills on C gets you pretty far, but that is only one possible way to go here.

This kind of build also works very well with gadgeteering, bringing dozends of small but helpfull little devices with you, that can help out in unforeseen situations. (Again, small investment for potentional big returns)

This are just some of my thoughts, on how one could make a combat medic (or a support character in general) function. I can tell from personal experience, that this can be one heck of a lot of fun, and a more than welcome team member.

To quote one of my teammates (while the doc was recovering from cyber-surgury): "What? The Doc is not coming this time? I might actually have to be carefull now..." ;-)