Alexander O'connell, MD

Clinical Focus

• Acid Reflux / Heartburn
• Annual Physical
• Asthma
• Blood in Stool
• Breathing Problems
• Bronchitis
• Chest Pain
• Cough
• Diarrhea

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• Acid Reflux / Heartburn
• Annual Physical
• Asthma
• Blood in Stool
• Breathing Problems
• Bronchitis
• Chest Pain
• Cough
• Diarrhea
• Dizziness
• General Consultation
• Gout
• Hypertension (High Blood Pressure)
• Illness
• Iron-Deficiency Anemia
• Nasal Allergies
• Nausea and Vomiting
• Obesity
• Pneumonia
• Primary Care
• Sore Throat
• Stomach Pain
• Tiredness / Fatigue
• Upper Respiratory Infection
• Urinary Tract Infection
• Vitamin B12 Deficiency
• Vitamin D Deficiency

Locations

Mount Sinai Doctors - Greenlawn

5 Cuba Hill Road, Greenlawn, NY, 11740

631-628-5000

Insurance Information

Accepted insurance may vary by the doctor’s office location. Please contact the office directly to obtain the most up-to-date insurance information.

Patients with Healthfirst Medicare Advantage insurance: Effective 9/1/2024, Mount Sinai’s primary care providers (internal medicine, family practice, and geriatrics) are not accepting new Healthfirst Medicare patients. Please contact Healthfirst for help finding a primary care provider. Healthfirst Medicare members who have a relationship with a Mount Sinai primary care provider can continue to book appointments with them.

Physicians who provide services at hospitals and facilities in the Mount Sinai Health System might not participate in the same health plans as those Mount Sinai hospitals and facilities (even if the physicians are employed or contracted by those hospitals or facilities).

Information regarding insurance participation and billing by this physician may be found on this page, and can also be obtained by contacting this provider directly. Because physicians insurance participation can change, the insurance information on this page may not always be up-to-date. Please contact this physician directly to obtain the most up-to-date insurance information.

Insurance and health plan networks that the various Mount Sinai Health System hospitals and facilities participate in can be found on the Mount Sinai Health System website.

Industry Relationships