About Dr. Spyros Mezitis, MD, PhD
Endocrinology & Internal Medicine • Manhattan, NYC
New York, NY 10021
Tue & Thu: 9am–7pm (Telehealth)
Fri: 9am–2pm
Sat: By appointment
Sun: Closed
After payment at your visit, we submit documentation with procedure and diagnosis codes for insurance reimbursement eligibility. Call us to discuss details.
Quick Bio
Dr. Mezitis received his BS degrees in Biology and History and his PhD in Neuropathology from the University of Pennsylvania. He earned his MD at Thomas Jefferson University Medical School and completed his Internal Medicine residency at Thomas Jefferson University Hospital.
His Endocrinology fellowship was completed at NewYork-Presbyterian/Weill Cornell, Memorial Sloan Kettering Cancer Center, and the Hospital for Special Surgery.
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Diabetes
Master your blood sugar with personalized treatment plans that go beyond numbers. Real-time glucose monitoring, insulin pump optimization, and urgent support—because your health doesn’t wait.
Thyroid
Your thyroid influences metabolism, energy, and mood. Get expert evaluation and treatment for hypothyroidism, hyperthyroidism, nodules, and thyroid cancer care—focused on clear diagnosis and a plan you can follow.
Osteoporosis & Vitamin D
Build strength from within. Evidence-based osteoporosis care paired with nutrition and lifestyle strategies to support strong bones and reduce fracture risk.
Hormone Disorders
Restore balance and reclaim vitality. Care for PCOS, fertility challenges, testosterone optimization, and adrenal/pituitary disorders—centered on symptoms, labs, and long-term health.
Medical Weight Loss
Science-backed weight management with modern therapies and a plan that fits your life. We focus on safety, sustainable progress, and measurable outcomes.
- Personalized medication education & nutrition planning
- Precision dosing & side-effect management
- Goal-driven progress tracking with labs
Telehealth
Telehealth options are available for appropriate visits. Call the office to confirm what can be handled virtually and what should be in-person.
Roadmap
What to Expect
Research & Clinical Focus
Focus on new diabetes medications and combination therapies, with protocols designed to deliver practical, personalized care.
Significant research contributions in thyroid cancer and thyroid disorder management, aligned with major endocrine organizations’ standards of care.
Groundbreaking work in organelle-specific proteins of the Golgi apparatus, with patented research originating from his doctoral thesis.
A customized health management plan combining medical advancements with nutritional wellness and lifestyle education.
Custom IV Infusions
We offer Custom IV infusion services for eligible patients as part of a wellness-focused, medically supervised plan.
Custom IV services vary by patient and require clinical evaluation. Call the office to learn what’s appropriate for you.