Dr. Seymour Alter MD Endocrinologist

Dr. Seymour Alter is an endocrinologist in Smithtown, New York and is affiliated with St. Catherine of Siena Medical Center. He received his medical degree from Boston University School of Medicine and has been in practice for 44 years. He is one of 9 doctors at St. Catherine of Siena Medical Center who specialize in Endocrinology, Diabetes & Metabolism.

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Office Location

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Specialty & Clinical Interests

Endocrinologist: General Endocrinology

Education & Medical Training

St Vincent's Hospital and Medical Center
Residency, Internal Medicine, 1970 - 1971

Albert Einstein College of Medicine at Beth Israel Medical Center
Residency, Internal Medicine, 1972 - 1973

Queens Hospital Center
Fellowship, Endocrinology, Diabetes and Metabolism, 1975 - 1976

Boston University School of Medicine
Class of 1970

Certifications & Licensure

American Board of Surgery
Certified in Surgery

WI State Medical License
Active through 2013

Insurances Accepted

  • Aetna Choice POS II
  • Aetna HMO
  • AmeriHealth Direct POS
  • Amerihealth HMO
  • AmeriHealth PPO
  • BCBS Blue Card PPO
  • BCBS Tennessee Network 5
  • CIGNA HMO
  • CIGNA Open Access
  • CIGNA PPO
  • First Health PPO
  • Great West PPO
  • HealthAmerica HealthAssurance PPO
  • Horizon BCBS PPO
  • IBC Keystone HMO / POS
  • IBC Personal Choice PPO
  • Multiplan PPO
  • Oxford Health Freedom
  • Oxford Health Liberty
  • United Healthcare - Direct Choice Plus POS
  • United Healthcare - Direct Options PPO
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