Complex case: anosognosia + munchausen + eating disorder

I am the parent of an adult child (21 years old) who is suffering from medical issues (including gastroparesis) and mental health issues (exhibiting features consistent with a somatic symptom disorder, an eating disorder, and even Munchausen Syndrome).

I have been in contact with NAMI and am successfully following the LEAP method (Xavier Amador, Ph.D.) to establish and maintain an open line of communication and a trusting relationship. I also work with a therapist who has treated similar patients and who coaches me and my husband when the situation goes beyond our ability to navigate on our own.

Unfortunately my daughter has reached an impasse with her medical doctors, especially her primary care physician, who have become outwardly frustrated with how difficult she is to treat (she refuses to see a psychiatrist because she doesn't believe she has any mental health issues, won't follow medical direction for anything she believes won't work, and asks for specific medical interventions she believes she needs that the doctors don't support). She is refusing to see any of her current doctors, even though she needs medical attention, because they don't "listen" to her or give her the medical interventions she believes she needs in order to survive.

Are there any medical doctors in the NYC area that are able to care for a patient with these complex issues? She needs a medical doctor that she can establish a trusting relationship with, who will "hear" her and not get frustrated with her and, hopefully, can be a partner to help us help her accept the care she really needs.

Any thoughts or suggestions on how to find a medical doctor like this would be greatly appreciated.