Male 76 years


Dr. Seymour Alter, MD



Internal Medicine   -  New York,  Smithtown

 Overview

Dr. Seymour Alter, MD works in Smithtown, New York is a specialist in Internal Medicine and graduated Beth Israel Hospital in 1973. Dr. Alter is affiliated with Saint Catherine of Siena Medical Center and practicing for 53 years

 Specialties

  • Internal Medicine

 Board Certifications

  • Board Certified by the American Board of Internal Medicine

 Years Since Graduation

  • 53

 Education & Training

Residency Hospitals

Beth Israel Hospital

Boston, MA, USA

Year completed: 1973

Medical School

Boston University School Of Medicine

Boston, MA, United States

Graduated: 1970

Fellowship Hospital

Li Jewish Med Center

New York, NY, USA

Year completed: 1976

Internship Hospital

Saint Vincent'S Hospital

New York, NY, USA

Year completed: 1971

 Awards

Awards for Dr. Seymour Alter, MD are not present.

 Dr. Alter Reviews

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 Office Locations


Primary location

 Office Address
222 East Main Street
New York (NY)
Smithtown
11787
 Phone:(631) 265-1177

Accepting New Patients

  • Yes
* Please verify this information when scheduling an appointment.

 Map & Directions



Office Address, 222 East Main Street, Smithtown, New York (NY), 11787




 Insurances Accepted (check insurance plans)

  • Aetna
  • Aetna HMO
  • Blue Card PPO
  • Blue Cross Blue Shield
  • Capital District Physician's Health Plan (CDPHP)
  • Capital District Physician's Health Plan (CDPHP) HMO
  • Choice Plus POS
  • Choice Plus POS II
  • Cigna
  • Cigna HMO
  • Cigna PPO
  • Emblem Health
  • EmblemHealth
  • Empire Blue Cross Blue Shield
  • Empire Blue Cross Blue Shield HMO
  • Freedom Plan
  • Great West Healthcare-Cigna PPO
  • Locals (any local)
  • MagnaCare
  • MagnaCare PPO
  • Medicare
  • Medicare MCR
  • MultiPlan
  • MultiPlan PPO
  • Navigate HMO
  • Navigate POS
  • Open Access Plus
  • Options PPO
  • Oxford Health Plans
  • Oxford Liberty
  • PHCS Network PPO
  • Tricare
  • United Healthcare
  • UnitedHealthCare

* Please verify this information when scheduling an appointment.

 Blog Posts

Blog Posts for Dr. Seymour Alter, MD are not present.

 Patients Questions

Patients questions for Dr. Seymour Alter, MD are not present.

 Affiliated Hospitals


Saint Catherine of Siena Medical Center photo


Saint Catherine of Siena Medical Center

50 Route 25a New York NY, Smithtown, 11787

Saint Catherine of Siena Medical Center is a non-profit hospital located in Smithtown, NY. Procedures/Diagnosis costs are at the state average in 8 of 12 procedures. Length of Stay is at the state average in 10 of 12 procedures.



  •  Latest reviews for Internal Medicine specialists

  • Dr. C. is a pleasant, professional caring and fun doctor. Answered all my questions on a keep it simple level and explained everything. He took his time. I will refer them when needed. What a great group!
    07 February 2024
    (6)
  • He is the best if you need help with panic attacks. He fixed up my medication and I feel better.
    31 January 2024
    (40)
  • Dr. Jungblut and staff are all professional, fun, conscientious. Been going here for a long time. My children and grandchildren now see Dr. Jungblut too.
    24 January 2024
    (7)
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