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Dr. Seymour Alter MDverified Is this you? Manage your online reputation

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Specialty iconSpecialtiesEndocrinology, Diabetes & Metabolism
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Location iconLocationSmithtown, NY
BioiconBio:
With over 53 years of experience, this seasoned endocrinologist specia...
ExperienceiconExperience:
50+ years
Language SpokeniconLanguage Spoken:
English
Common TreatmentsiconCommon Treatments:
Gastroesophageal Reflux Disease (Gerd)
Rheumatoid Arthritis
Otitis Media
Chronic Renal Disease
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Institutes AttendediconInstitutes Attended:
NYCHH-B, 
ISMMS, 
NYMC, 
BUSM, 
NY State
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CertificatesiconCertificates:
Endo, Diab, Metab Fellowship, 
Res
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Common TreatmentsiconCommon Treatments:
Gastroesophageal Reflux Disease (Gerd)
Rheumatoid Arthritis
Otitis Media
Chronic Renal Disease
See More
Institutes AttendediconInstitutes Attended:
NYCHH-B, 
ISMMS, 
NYMC, 
BUSM, 
NY State
See More
CertificatesiconCertificates:
Endo, Diab, Metab Fellowship, 
Res
See More
specOverview
Dr. Seymour Alter, MD, is a highly experienced endocrinologist and internist practicing in Smithtown, New York. He is affiliated with St. Catherine of Siena Hospital and has been in the medical field for over 53 years. Dr. Alter graduated from Boston University School of Medicine in 1970 and completed his residency in Internal Medicine at the Icahn School of Medicine at Mount Sinai....
specPractice
insurance
In-network insurance
Aetna
Blue Cross Blue Shield
Blue Cross Blue Shield of Louisiana
Blue Cross Blue Shield of Massachusetts
Physicians Health Plan
CDPHP
insurance
Appointments Scheduling
Seymour Alter MD
Avatar iconIn-Person Visit
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Address:

222 E Main St Ste 109, Smithtown, NY 11787
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Phone:

(631) 265-1177

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Fax:

(631) 265-1225

specAbout
NPI/License numbericonNPI/License number:
1750336251
ExperienceiconExperience:
50+ years
Language SpokeniconLanguage Spoken:
English
Hospital AffiliationsiconHospital Affiliations:
St. Catherine of Siena Hospital
SpecialtiesiconSpecialties:
Endocrinology, Diabetes & Metabolism
General Endocrinology
Internal Medicine
Common TreatmentsiconCommon Treatments:
Gastroesophageal Reflux Disease (Gerd)
Rheumatoid Arthritis
Otitis Media
Chronic Renal Disease
See More
Education IconEducation & Certifications:
Education Icon
NY State Medical License
Ny State2025
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Endocrinology, Diabetes, and Metabolism Fellowship
Nyc Health + Hospitals / Bellevue1976
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Internal Medicine Residency
Icahn School of Medicine at Mount Sinai1973
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Internal Medicine Internship
New York Medical College1971
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Medical Degree
Boston University School of Medicine1970
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Board Certified Internal Medicine
American Board of Internal Medicine