Meet Our Physicians & Staff

photo of Physicians' Office Building
Immune Health Services
Physicians' Office Building
Map & directions
Suite 211
725 Irving Ave, Syracuse, NY 13210
Phone: 315 464-5533
Fax: 315 464-5579

Mark Polhemus, MD

Mark Polhemus, MD
Appointed 09/06/11
311 Physicians' Office Building
725 Irving Ave
Syracuse, NY 13210

315 464-5815

Current Appointments

Hospital Campus

  • Downtown

Clinical Section Affiliations

  • Medicine: Infectious Disease


Education & Fellowships

  • Additional Training: Uniformed Services University of the Health Sciences, Bethesda, MD, 2004, Tropical Medicine and Travelers Health
  • Fellowship: Walter Reed Army Medical Center, Washington, DC, 2004, Infectious Diseases
  • Residency: Walter Reed Army Medical Center, Washington, DC, 1998, Internal Medicine
  • Internship: Walter Reed Army Medical Center, Washington, DC, 1996, Internal Medicine
  • MD: Brown University, 1995
  • Certificate of Advanced Study: Bryn Mawr College, 1991, Pre-Medical
  • BS: University of New Hampshire, 1984, Business Administration with Psychology Minor

Clinical Trials

  • Effect of Antimalarial Drugs on the Immune Response to Rabies Vaccine for Post-Exposure Prophylaxis. A Randomized, Open Label Trial in Healthy US Adults Age 18-60 Years
    Read more
  • Immungenicity of a Two vs Three Dose, Intradermal (ID) vs Intramuscular (IM) Administration of a Licensed Rabies Vaccine for Pre-Exposure Vaccination
    Read more
  • Immunogenicity of a Two vs Three dose, Intradermal (ID) vs Intramuscular (IM) Administration of a Licensed Rabies Vaccine for Pre-Exposure Vaccination
    Read more
  • Specimen Collection from Healthy Volunteers for In Vitro and Animal Research
    Read more


  • Adults


  • American College of Physicians (ACP)
  • American Society of Tropical Medicine and Hygeine (ASTMH)

Current Hospital Privileges

  • Upstate University Hospital
  • Crouse Hospital
  • VA Medical Center


Link to PubMed External Icon (Opens new window. Close the PubMed window to return to this page.)

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Support Staff

A team of qualified support staff assist our physicians in all aspects of a patient's medical care including scheduling, assisting with diagnostic testing, education and teaching, assisting with direct patient care, assisting with billing, and being available to answer general questions and concerns.

Immune Health Services - Nurse Practitioners and Physician Assistants

A nurse practitioner functions both independently and in conjunction with the physicians in our outpatient location in order to perform evaluation and management services for patients referred for the diagnosis and treatment of HIV/ AIDS.

Linda Bartlett
Linda Bartlett, RN, BSN, MSN, NP
Lewis Briot
Lewis Briot, RPA-C, MPAS
Theresa Feola
Theresa Feola, RN, FNP-C
Martha Roman
Martha Roman, RN, MS, ANP, BC

Immune Health Services - Clinic Nursing Staff

Our registered nurses assist primarily with the care of patients in the outpatient setting. The nurses are available to respond to specific patient questions, provide ongoing patient education, and provide support to the physicians.

Jennifer Hatch
Jennifer Hatch, RN
Melissa Rider
Melissa Rider, RN
Shannon Huggins
Shannon Huggins, CMA

Immune Health Services - Social Workers

The IHS social workers have both inpatient and outpatient responsibilities. The social workers complete psychosocial assessments and annual updates on each patient. The social workers assist patients with identifying problems that impact their daily lives and help them come up with strategies to resolve those issues. The social workers are an integral part of each patient's treatment team; they work closely with the nurse practitioners and physicians.

Kelley Flood
Kelley Flood, LMSW,
IHS Program Director
Glenn Forsythe
Glenn Forsythe, LCSW
Lois Needham
Lois Needham, LMSW
Patricia Woodruff
Patricia Woodruff, LMSW

Behavioral Health Staff at Immune Health Services

Tracey Gilgallon
Mitchell Langbart, MD
Brian Amidon
Brian Amidon, LCSW
Mental Health Counselor
Marilyn Brown-Shakir
Marilyn Brown-Shakir, LMSW, CASAC
Tracey Gilgallon
Tracey Gilgallon, LCSW
Mental Health Counselor
Cheryl Palmer
Cheryl Palmer, LMSW
Mental Health Counselor
Martha Rodriguez
Martha Rodriguez, Human Services Associate,
Mental Health Care Manager

Licensed Practical Nurses

Our LPN works in the Linkage, Retention and Treatment Adherence (LRTA) Program. The role of the LRTA LPN is to provide patient education and assistance to overcome barriers that impact participation in medical care and treatment. The primary focus of LRTA services is to help patients understand the importance of the medications they are taking and attendance at their regularly scheduled appointments. The LPN will address any concerns or limitations that may prevent patients from taking medications as prescribed or attending medical appointments.

Alza Johnson
Alza Johnson, LPN
LRTA Staff


Eric Sidman
Eric Sidman, PharmD

Peer Mentor

Eric Sidman
John Wikiera

Administrative and Secretarial Staff

Michael Cutillo
Michael Cutillo
Melissa Napierkowski
Melissa Napierkowski, BS, CASPH
IHS& Program Assistant
Kathy Trouesdale
Kathy Trouesdale
IHS Billing Specialist
Robin Vinette
Robin Vinette
IHS Administrative Staff