Wayne--

Good idea. I did something similar several years ago after my wife was placed in the "high-risk pregnancy" category.

I used fluorescent 3x5" index cards, printing on the blank back side in "portrait" orientation (short side horizontal), which is then folded to fit into a card window in my wallet (in my case). My card is day-glow green; my wife's is hot pink. I still have bright yellow & blue for my kids, when I get around to theirs. Each card is clearly labeled Emergency Medical Information. I used an Arial typeface for clarity, & small, though clearly legible, characters, to fit the desired info onto the card, with the information grouped similarly to yours.

Addressing color first, I wanted something extremely visible, hence my choice of the fluorescent cards. The info I included was the same as yours, except I didn't include in-laws address (can be cross-referenced from the phone number if needed), nor phone card info, since I carry one anyway. Basically, I wanted the card to provide everything needed to check me (or my wife) into the hospital--so that it could be used if either of us were unable to answer for ourselves, or (from bitter experience & 20/20 hindsight), I could give it to someone trusted (such as an in-law) & let them complete the Q & A with the check-in clerk at the ER while I was with my wife in the ER.

I have a number of friends who are Paramedics, & I had them review my cards. They all agreed the bright color was good (it helps them locate it in a wallet when/if they have to search for ID), as was the info on the card. You might consider placing sensitive information on the opposite side of the card, & folding the card, then laminating it, either with a real laminator, or using clear packing tape for the same effect, with a “cut here for more info” if appropriate. (Our local Fire Department uses such a folded & laminated card as a personnel control device at emergency scenes: Name on the outside, contact information sealed inside. It’s opened in case of need.) The clear tape or other lamination is especially important if you use a laser printer to print the information. The print toner tends to permanently attach itself to the clear plastic card sleeves in my wallet.

When my wife was pregnant, her card went into a 3x5" plastic sleeve, & around her neck on a dog-tag ball chain when she was commuting, & in a visible spot in her purse at other times. We each have a copy of the other's card, too. I showed my wife's card to her Ob/Gyn, who liked the idea so much that I gave her office staff the Word template I'd created for them to pass on to other high-risk patients.

Also, as you're already aware, you're giving out a lot of information on such a card--it's a risk you must weigh, but IMHO is worth taking.

David