Usually she requires employment info like the name of your employer, your position in the company, and a telephone number at your place of business to discretely call your job to verify  you employment. I for one give references of other providers I have been with to verify who I am rather than give out employment info. References seem safer to me.

Usually she'll ask for your name,number,address or hotel location,maybe a few references,where you work and your work phone number and photo ID when you arrive for your appt.