Expert infusion care, guided by physicians you can trust.

MEET THE PHYSICIAN

Meet Dr. Anna Zezon

Dr. Anna Zezon
Board-Certified Rheumatologist · Supervising Physician

Dr. Anna Zezon is a board-certified rheumatologist who completed dual fellowships in Rheumatology and Geriatrics at NYU Langone Medical Center, where her research focused on a geriatric cohort with systemic lupus erythematosus.

She completed her residency at Albert Einstein College of Medicine, where she published two papers on the rheumatic manifestations of autoimmune thyroid disease, after undergraduate studies at Columbia University and medical school at the Sackler School of Medicine in Israel.

Practicing since 2013 with NYU and HVA Medical Group, Dr. Zezon founded Arthritis & Rheumatic Care in Teaneck, NJ in 2019, and personally reviews every Specialty Infusions patient's chart and treatment plan.

Affiliated with Englewood Hospital and HolyName Hospital
MEET THE TEAM

Alongside Dr. Zezon, every visit

Libby Frenkel, FNP-C

Libby Frenkel, FNP-C

Nurse Practitioner

Libby Frenkel, FNP-C, is a board-certified Family Nurse Practitioner with a strong interest in autoimmune and inflammatory rheumatic diseases. She earned her Bachelor of Science in Nursing from Pace University and her Master of Science in Nursing as a Family Nurse Practitioner from William Paterson University. She has completed the American College of Rheumatology Advanced Rheumatology Course and the Rheumatology Advanced Practice Providers Step-Up to Rheumatology training. Libby is committed to providing comprehensive, compassionate care to patients with rheumatic and autoimmune conditions.

Anna Mamaev, RN

Anna Mamaev, RN

Infusion Nurse

Anna Mamaev, RN is a compassionate and dedicated Registered Nurse who has been part of our Rheumatology team since June of 2026. With a background in Emergency Department Nursing, Anna brings strong clinical experience, a calm presence, and a caring approach to every patient interaction. She takes pride in creating a welcoming environment where patients feel heard, respected, and truly cared for. Her passion for nursing comes from making a meaningful difference in the lives of those she serves.

Terri Newhouse

Terri Newhouse

Practice Manager

Terri Newhouse serves as the Practice Manager for Arthritis & Rheumatic Care, bringing a lifelong dedication to medicine and healthcare management to her leadership role. With a Bachelor’s Degree in business administration from Rutgers University, Terri has accumulated extensive operational expertise across diverse medical specialties, including Primary Care, Infectious Disease and Gastroenterology. Terri’s professional philosophy is defined by a commitment to patient-centered care and a passion for supporting patients and their families. As an administrative leader, she focuses on empowering physicians with the robust operational support necessary to deliver exceptional, high-quality medical service.