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Dr. Kostas Sideridis, MD
Family Medicine* Age 53
Dr. Kostas Sideridis, MD

Offers telehealth
Map Pin Small Syosset, NY
Dr. Kostas Sideridis, MD is a Family Medicine Physician in Syosset, NY.
Dr. Kostas Sideridis, MD

Dr. Kostas Sideridis, MD

Family Medicine* Age 53
Syosset, NY
Accepting new patients
27 years of experience

Offers telehealth

Dr. Kostas Sideridis, MD is a Family Medicine Physician in Syosset, NY.
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About Dr. Kostas Sideridis, MD

Dr. Sideridis graduated from NEW YORK INSTITUTE OF TECHNOLOGY / OLD WESTBURY. Dr. Kostas Sideridis, MD is a Family Medicine Physician in Syosset, NY and has 27 years experience. Dr. Sideridis has experience treating conditions like Constipation, Abdominal Pain, Lactose Intolerance, Enteritis, Viral Enteritis, Familial Adenomatous Polyposis, Intestinal Diverticulitis, Infectious Diarrheal Disease, Chronic Gastritis, Gastrointestinal Bleeding, Gastroparesis, Dysentery, Gastritis, Nausea, Duodenal Ulcer, Gastric Ulcer and Diarrhea among other conditions at varying frequencies. Dr. Sideridis's office accepts new patients and telehealth appointments. Dr. Sideridis also speaks Greek. Dr. Sideridis is board certified in Gastroenterology and accepts multiple insurance plans.

Offers Telehealth

This provider offers telehealth appointments. Call the office to schedule.

Experience Check

Enter a condition or procedure
Constipation
Abdominal Pain
Lactose Intolerance
Constipation
Abdominal Pain
Lactose Intolerance
Constipation
Abdominal Pain
Lactose Intolerance
Enteritis
Viral Enteritis
Familial Adenomatous Polyposis
Intestinal Diverticulitis
Infectious Diarrheal Disease
Chronic Gastritis
Gastrointestinal Bleeding
Gastroparesis
Dysentery
Gastritis
Nausea
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Duodenal Ulcer
Gastric Ulcer
Diarrhea
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Diaphragmatic and Hiatal Hernia
Hemorrhoids
Gastroesophageal Reflux Disease (GERD)
Indigestion
Pancreatitis
Acute Gastritis
Endoscopy
Duodenal Polypectomy
Dysphagia
Irritable Bowel Syndrome
Inflammatory Bowel Disease
Congenital Anomaly Esophagus
Rigid Proctosigmoidoscopy
Flexible Sigmoidoscopy
Manometry
Gallstones
Gas-Bloat Syndrome
Esophageal Ulcer
Intestinal Diverticulosis
Heartburn
Ulcerative Colitis
Intestinal Ulcer
Hypokalemia
Noninfectious Gastroenteritis and Colitis
Anemia
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ERCP (Endoscopic Retrograde Cholangiopancreatography)
Barrett's Esophagus
Colonoscopy, Proctosigmoidoscopy, and Sigmoidoscopy
Colonoscopy
Dehydration
Vomiting Disorders
Esophagitis
Laparoscopic Removal of Stones from Biliary Tract
Peptic Ulcer
Reflux Esophagitis
Crohn's Disease
Gastrointestinal Malabsorption
Esophageal Motility Disorders
Intestinal Obstruction
Bile Duct Obstruction
Unexplained Weight Loss
Metabolic Dysfunction Associated Steatotic Liver Disease (MASLD)
Colorectal Polyp
Duodenitis
Upper Digestive Tract Cancer
Pancreas Surgeries
Malnutrition
Anal or Rectal Pain
Esophageal Varices
Removal or Destruction of Rectal or Intestinal Tumor (incl. Colonoscopy, Proctosigmoidoscopy, Sigmoidoscopy and Control of Hemorrhage)
Cirrhosis
Mallory-Weiss Syndrome
Gastroptosis
Liver Damage from Alcohol
Ascites
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Ileus
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Retroperitoneum Cancer
Bowel Strangulation
Alcoholic Cirrhosis
Alcoholic Fatty Liver
Alcoholic Gastritis
Alcoholic Hepatitis
All Types of Food Poisoning
Autoimmune Hepatitis
Barretts Esophagus with Dysplasia
Benign Neoplasm of the Digestive System
Biliary Cirrhosis
Celiac Disease
Cholangitis
Chronic Anal Fissure
Chronic Cholecystitis
Colon Cancer
Congenital Achalasia
Congenital Anomaly Bile Duct
Cyclical Vomiting
Cyclical Vomiting Syndrome
Cystic Fibrosis
Diffuse Esophageal Spasm
Duodenal Cancer
E. coli Food Poisoning
Eosinophilic Esophagitis
Esophageal Achalasia and Cardiospasm
Esophageal Diverticulum
Folate Deficiency Anemia
Food Allergy
Food Poisoning
Gastrojejunal Ulcer
Hemochromatosis
Hepatitis A
Hepatitis B
Hepatitis B - Immune Response
Hepatitis C
Hepatorenal Syndrome
Hernia
  • View other providers who treat Hernia
Hiatal Hernia
Hiatal Hernia with Obstruction
Intestinal Fistula
Intestinal Malabsorption Carbohydrate
Intestinal Prolapse
Ischemic Colitis
Liver Abscess
Meckel's Diverticulum
Mesenteric Panniculitis
Neoplasm of Gastrointestinal Tract
Neurogenic Bowel
Non-Neonatal Jaundice
Obstructed Inguinal Hernia
Pancreatic Pseudocyst
Pelvic Abscess
Pernicious Anemia
Primary Biliary Cholangitis
Primary Sclerosing Cholangitis
Proctoptosis
Pyloric Stenosis
Rectal Prolapse
Rectal Ulcer
Salmonella Food Poisoning
Sclerosing Mesenteritis
Spleen Cyst
Splenic Infarct
Splenomegaly
Stomach Stenosis
Viral Hepatitis
Viral Infection
Visceroptosis
Vitamin B12 Anemia
Vitamin_Deficiency
Abscess or Fluid Incision and Drainage
Bile Duct Procedure
Biliary Drainage
Colon Cancer Screening
Colorectal Cancer Screening
Fecal Impaction Removal
Gallbladder Scan
Hemorrhoidectomy or Excision of Anal Tags
Hepatitis A Screening
Hepatitis B Virus Screening
Hepatitis C Virus Screening
Hepatitis Screening
Impedance Testing
Instrumental Diagnostic Evaluation for Dysphagia
Liver Biopsy
Liver Function Test
pH Probe
  • View other providers who treat pH Probe
Proctosigmoidoscopy
Screening Colonoscopy
Sigmoidoscopy
Transendoscopic Stent Placement
Ultrasound, Endoanal
Ultrasound, Esophageal
VAP Lipid Testing
Wireless pH Testing

Accepted Insurance Plans

* Please verify this information when scheduling an appointment.
  • Empire (Select Network)-NY POS
    Blue Priority (Select Network)-NY
    National (BlueCard Basic) PPO
    National (BlueCard) PPO
    Blue Access (Select Network)-NY
  • First Health (Coventry Health Care) PPO
  • Harvard Pilgrim Health Care PPO
  • Select
    Aetna
    Choice Plus POS II
  • Curative PPO
    Curative EPO
    Curative PPO Plus
  • Blue Card PPO
  • MultiPlan PPO
  • HealthyBlue 2.0
    HealthyBlue Advantage
  • Choice Care PPO

Where Dr. Kostas Sideridis, MD Sees Patients

  1. 1 Long Island Medical PC
    237 Jericho Tpke, Syosset, NY 11791
    Icon Directions Right Arrow Directions Phone Icon (516) 584-6400
  2. 2 William Schlesinger MD PC
    121 Eileen Way, Syosset, NY 11791
    Icon Directions Right Arrow Directions Phone Icon (516) 584-6400
  3. 3 Syosset Hospital
    221 Jericho Tpke, Syosset, NY 11791
    Icon Directions Right Arrow Directions Phone Icon (516) 584-6400
  4. 4 Plainview Hospital
    888 Old Country Rd, Plainview, NY 11803
    Icon Directions Right Arrow Directions Phone Icon (516) 584-6400

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Telehealth Options
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(516) 584-6400

Meet Dr. Kostas Sideridis, MD

Languages Spoken
Greek
Languages Spoken
Specialties*
Gastroenterology
Family Medicine
Specialties*
  • *Sharecare does not verify qualifications for medical specialties. Please verify your provider's specialty and qualifications directly with your provider and applicable medical board.
Common Questions and Answers
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FAQs About Dr. Sideridis's Practice

Find contact information here to make an appointment.

A list of accepted insurance providers is available on the Sharecare insurance check. It is always a good idea to verify your insurance when making an appointment.

New patients are generally accepted by Dr. Kostas Sideridis, MD. To arrange an appointment, call the number on Dr. Sideridis's profile.

Dr. Sideridis frequently treats the following conditions: Constipation, Abdominal Pain, Lactose Intolerance, Enteritis, Viral Enteritis, Familial Adenomatous Polyposis, Intestinal Diverticulitis, Infectious Diarrheal Disease, Chronic Gastritis, Gastrointestinal Bleeding, Gastroparesis, Dysentery, Gastritis, Nausea, Duodenal Ulcer, Gastric Ulcer and Diarrhea. See more on Sharecare.

Dr. Kostas Sideridis, MD is affiliated with Plainview Hospital and North Shore University Hospital.

Yes, Dr. Kostas Sideridis, MD holds board certification in Gastroenterology.
Training & Medical Education
Medical Education
  • NEW YORK INSTITUTE OF TECHNOLOGY / OLD WESTBURY
    1999
Medical Education
Board Certifications
  • Gastroenterology
Board Certifications
What’s a board certification and why is it important that my provider has one?

A board certification represents a provider’s dedication to ongoing training in one or more specialties, including the completion of intensive exams. While not all specialties have board certifications, if your provider does have one they’ve taken the extra step to master their specialty and to keep up with the latest advancements in their field.

Hospitals Where Dr. Kostas Sideridis, MD Practices

  • Plainview Hospital

    888 Old Country Rd, Plainview, NY

  • North Shore University Hospital

    300 Community Dr, Manhasset, NY

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