The individual who did the asking was focused on finding a way to heal herself using magical practices in addition to modern medicine. This is an incredibly intelligent route, and I applaud her for it.
If you're suffering through health issues, be they chronic or acute, here are some spirits that are worth approaching:
An angel, though not one specifically associated with healing. Sandalphon is essentially thought to be the angelic mechanism through which prayers are elevated to God. Something to consider if you feel like you're not being "heard" by the Divine.
Likewise, an angel, though not one specifically a healing being. Selaphiel is all about ensuring that our prayers are heard and acknowledged by the Divine, so using her in conjunction with Sandalphon as the basis for healing rituals is a pragmatic choice.
This spirit is sometimes thought to be an angel, but I tend to view Ophiel as being an intelligence of the planetary powers of Mercury. Ophiel's fantastic at finding whatever it is you need to achieve [x]. Need a proper doctor who knows how to sort your specific problem out? Appeal to Ophiel and ask for that assistance through a petition.
A spirit of directed healing, this is a kind of warlike angel who is thought to defeat specific demons of disease. Phenomenal for infections, in particular.
Often called an angel of miracles, it has been my experience that these "miracles" tend to take the shape of extreme healing. He can offer the means of closure and acceptance, while also dealing with the physical ramifications of your circumstances.
I tend to view him as an angel of trauma in this sense, as he is considerably more responsive when great need is present. I've appealed to him in times of great pain and consternation with substantial results.
Speaking from a wholly experiential POV now, its worth mentioning that Sabrael seems to respond more readily when given a reason for why you need to be healthy or able. If ever you are acting in defense of another and your health/wellness prevents you from doing so, that's when the greatest impact is had. That specific kind of situation seems to get the most attention, so bear this in mind.
An archangel who is sometimes thought to be a Saint, Raphael is all about active healing and the processes through which such boons can occur. Raphael's well-acquainted with our bodies, nutritional needs, and the effects both spiritual and physical that certain practices and dietary inclusions can have upon us.
I would recommend pinging Raphael for both active healing AND direction around the act of healing yourself.
7. St. Peregrine
As the story goes, St. Peregrine suffered from a really gnarly infection in his leg. Some call it cancer, some say it was a blood infection....the stories tend to vary, but this being has been associated with miraculous healing as a result.
I would recommend procuring for yourself a St. Peregrine medal, badge, or photo, knowing that you can carry it with you. Sanctify this image and recognize it as an earthly manifestation of the Divine.
Make known your prayers for health and healing, and follow the flow that life brings you. St. Peregrine won't do anything that's strictly outside of what's "allowed" in the Cosmic sense, but he's a damned powerful healer when given the wiggle room to be one.
I hope this information is of help to you. Have a wonderful day & may you find the healing you seek!