New York City

Decades of clinical excellence, rooted in New York

Theresa Gillis brings a distinguished standard of care to the heart of Manhattan — where precision, compassion, and a deep commitment to patient well-being shape every consultation.

(646) 888-1936 Explore Services

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Theresa Gillis medical practice in Manhattan

NYC Est. Practice

About

A practice built on trust and expertise

Located in the prestigious Dumont Building on Madison Avenue, Theresa Gillis has established a medical practice distinguished by its unwavering commitment to patient-centered care. Every visit reflects years of clinical experience and a genuine investment in the health outcomes of those she serves.

Her approach combines thorough diagnostic attention with a calm, reassuring presence — ensuring patients feel heard, understood, and confident in their care plan. In a city as fast-paced as New York, Theresa Gillis offers the rare gift of time and attention.

Manhattan Based Practice

Comprehensive Approach

Patient-First Philosophy

Services

Thoughtful care, delivered with precision

Each service is provided with the same meticulous attention to detail and dedication to your well-being.

Comprehensive Examinations

Thorough assessments that go beyond the surface, identifying concerns early and establishing a clear path forward for your health.

Preventive Health

Proactive strategies and routine screenings designed to keep you well and catch potential issues before they become serious.

Chronic Condition Management

Ongoing, personalized support for managing long-term health conditions with evidence-based treatment and regular follow-up.

Personalized Care Plans

Tailored treatment strategies developed around your unique health profile, lifestyle, and long-term wellness goals.

Diagnostic Evaluation

Careful interpretation of test results and clinical findings to provide clear answers and informed next steps.

Wellness & Lifestyle Guidance

Practical advice on nutrition, stress management, and healthy habits tailored to the demands of city living.

Contact

Begin your consultation

Located in the heart of Manhattan, the practice is easily accessible and ready to welcome new patients. Reach out to schedule an appointment or learn more about available services.

Address Dumont Building, 515 Madison Ave
New York, NY 10022-5400

Phone (646) 888-1936