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    Gilli William E MD

    4.1 (14 reviews)

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    Review Highlights - Gilli William E MD

    I've usually been seen by Tracy Simonsen, NP, who is great.

    Mentioned in 2 reviews

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    Mesa West Medical Group - William E. Gilli, M.D., F.A.C.P.
 Assistant Professor of Medicine at UCLA at Kern Medical

    Mesa West Medical Group

    4.0(44 reviews)
    1.5 mi

    I have been going here for a while now. Dr. GILLI's staff is amazing!!!! Either text or email and…read moreit is taken care of promptly. Dr. Gilli will tell you like it is. No nonsense. So if you don't like hearing the truth about your care, find another doctor to patronize you.

    Tracy will prescribe multiple drugs and not know side effects. She was condescending from the 1st…read morevisit but I thought it was quirky. In my third visit with her, today, I had to literally walk out and won't be back! I asked other staff if she was just having a bad day. So consistently condescending but today she was actually rude. I asked about side effects of a particular drug she stated no one had ever complained to her before and dismissed my question. Then when I asked her to clarify something she got irritated with me and started with more condescension. If you don't agree with her she will belittle you into thinking you're the one that's wrong rather than explaining like most doctors! No thanks! Update: 04/15/26 - I spoke with Dr Gilli on the phone and it's seems they are somewhat flippant and unapologetic in their attitude towards the situation. I don't feel comfortable with this response that she "always" treats patients with respect after I conveyed the opposite in a professional manner over the phone. This was damage control gone wrong imo. Black box warnings are serious and it's too bad this Dr. doesn't care to make any changes as she is a 25 year employees with the company. He's got her back regardless. I appreciate the call back but it's clear his attitude is just like hers. They don't care.

    Photos
    Mesa West Medical Group - Tracy Simonsen ACNP Acute Care Nurse Practitioner

    Tracy Simonsen ACNP Acute Care Nurse Practitioner

    Mesa West Medical Group - Kevin Nelson, FNP 
 Family Nurse Practitioner and Physician Assistant

    Kevin Nelson, FNP Family Nurse Practitioner and Physician Assistant

    Mesa West Medical Group - Mesa West Medical Office at 8327 Brimhall Road, Suite 704

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    Mesa West Medical Office at 8327 Brimhall Road, Suite 704

    Gilli William E MD - internalmed - Updated May 2026

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