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leadership team

At Spectrum Medical, our dedicated leadership team guides our mission to deliver exceptional healthcare. Committed to excellence, they ensure compassionate, innovative services for our diverse community.

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  • Thanes Vanig

    Thanes Vanig, MD, AAHIVS
    Chief Medical Officer

    Dr. Thanes Vanig, an accomplished medical professional, founded Spectrum Medical in 1997. His educational background, including Magna Cum Laude honors from Mahidol University Medical School in Thailand, Internal Medicine residency at Harvard Medical School, and a Postdoctoral Fellowship in Infectious Diseases from Stanford University Medical School, has formed the basis of his expertise. Dr. Vanig is internationally renowned for his work in HIV medicine, actively contributing to the field through speaking engagements, publications, and advisory roles. Beyond his professional accomplishments, he is deeply committed to community service, actively participating in initiatives such as the City of Phoenix Fast Track Cities Initiative and taking a leadership role within the Maricopa START (State of Arizona Rapid Treatment) Program. In this program, he authored the medical protocol to follow in Maricopa County for providing immediate support and guidance to newly diagnosed HIV patients, helping them access the care they need and fostering a sense of safety and well-being within the community.

    The founder of Spectrum, Dr. Vanig is internationally renowned for his work in HIV medicine.
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  • Howard Grossman

    Howard Grossman, MD
    Medical Director

    Dr. Howard Grossman is a nationally recognized internist and trailblazer in LGBTQIA2S+ health and HIV care. As Spectrum Medical’s Medical Director, he brings over 40 years of experience delivering compassionate, identity-affirming care. Dr. Grossman has led major clinics across the U.S., including Fenway Health in Boston, Howard Brown Health in Chicago, and the LGBTQ Center of Southern Nevada. He founded the first private primary care practice in New Jersey dedicated solely to LGBTQ+ patients and served as Executive Director of the American Academy of HIV Medicine. He’s also a medical educator, global HIV advocate, and published author committed to patient empowerment and healthcare equity. 

    At Spectrum, Dr. Grossman leads with a deep belief in care that’s collaborative, respectful, and rooted in trust. When you see him, expect more than expertise—you’ll be seen, heard, and valued.

    Dr. Grossman is a trailblazer in LGBTQIA2S+ health and HIV care.
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  • Imani Anthony, Customer Service Team Lead

    Imani Anthony

    Imani Anthony
    Patient Support Team Lead

    Working here is rewarding as it allows me to help others and support the community. Outside of work, I find joy in traveling, hiking and catching up with family/friends.

    Working here is rewarding as it allows me to help others and support the community.
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  • Enrique Bailon, Community Outreach Navigation Supervisor

    Enrique Bailon

    Enrique Bailon
    Community Outreach Navigation Supervisor

    I am passionate about helping our community! One of the things I enjoy is spending time with my FAMILIA!

    Enrique is passionate about helping our community!
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what patients have to say about spectrum medical

  • McKynzie B.

    “ The staff was so friendly, accommodating, and very kind. It was my first time having an appointment there and I was very well cared for. ”
    – McKynzie B.

  • Daniel R.

    “ The best queer general practice medical provider I’ve been to. They are always caring and candid which I appreciate and I have been seeing them for about 6 years. They’ve gone through tech and organizational changes, sure, but that hasn’t stopped them from their primary focus and knowledge regarding queer issues— far more than I can say from non-queer practices. ”
    – Daniel R.

  • Sam H.

    “ As a trans patient, I can say they have always been respectful and sensitive of me and my needs. All the staff has always been very sweet and friendly, super helpful. ”
    – Sam H.

  • Stephen H.

    “ I feel my experience at Spectrum has been a great journey of info sharing, caring & an absolute respect for me as a patient ”
    – Stephen H.

  • Crispino R.

    “ My follow up appointment to see Dr. Thanes Vanig went smoothly. Dr. Thanes Vanig saw me in less than 5 minutes after I was seated in the exam room. My laboratory results were reviewed with me. I was glad to hear from Dr. Vanig that I need a bivalent Covid vaccine booster. The Spectrum Medical staff are efficient in doing their work. Complimentary Condoms are available at the main lobby of Spectrum Medical. ”
    – Crispino R.