Are there any providers in the Phoenix area who are comfortable with someone with a physical disability?

it MAY depend on the actual disability itself.

Just ask them.

When I first got into massage and was doing outcall I specialized in working with disabled clients for three years. (I advertised through ABIL.) Now that I own three shops I don't do outcall but still enjoy seeing anyone with or without a disability who enjoys the pleasure of a loving touch as much as I love sharing it.