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Dr. Iheanyichukwu Aja-Onu, MD

Gastroenterology* Age 60
Dr. Iheanyichukwu Aja-Onu, MD
3.3 (16 Ratings)
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Dr. Iheanyichukwu Aja-Onu, MD is a Gastroenterologist in Freeport, NY.
Dr. Iheanyichukwu Aja-Onu, MD
3.3 (16 Ratings)
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Dr. Iheanyichukwu Aja-Onu, MD

Gastroenterology* Age 60
Freeport, NY
Call for new patient details
39 years of experience
Dr. Iheanyichukwu Aja-Onu, MD is a Gastroenterologist in Freeport, NY.

About

Dr. Aja-Onu graduated from UNIVERSITY OF NIGERIA / COLLEGE OF MEDICINE. Dr. Iheanyichukwu Aja-Onu, MD is a Gastroenterologist in Freeport, NY and has 39 years experience. Dr. Aja-Onu currently practices at Practice and are affiliated with Mercy Medical Center, Mount Sinai South Nassau and Saint John's Episcopal Hospital at South Shore. Dr. Aja-Onu has experience treating conditions like Peptic Ulcer, Gastrointestinal Bleeding and Gallstones among other conditions at varying frequencies. At present, Dr. Aja-Onu received an average rating of 3.3/5 from patients and has been reviewed 16 times. Dr. Aja-Onu's office is not accepting new patients. Dr. Aja-Onu also speaks Afrikaans. Dr. Aja-Onu is board certified in Gastroenterology and accepts multiple insurance plans.

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Experience Check

Enter a condition or procedure
Peptic Ulcer
Gastrointestinal Bleeding
Gallstones
Peptic Ulcer
Gastrointestinal Bleeding
Gallstones
Peptic Ulcer
Gastrointestinal Bleeding
Gallstones
Malnutrition
Bile Duct Procedure
Gastritis
Hypokalemia
ERCP (Endoscopic Retrograde Cholangiopancreatography)
Abdominal Pain
Acute Gastritis
Anemia
  • View other providers who treat Anemia
Ascites
  • View other providers who treat Ascites
Bile Duct Obstruction
Chronic Gastritis
Cirrhosis
Colorectal Polyp
Constipation
Crohn's Disease
Dehydration
Diaphragmatic and Hiatal Hernia
Diarrhea
  • View other providers who treat Diarrhea
Duodenal Cancer
Duodenal Ulcer
Duodenitis
Dysphagia
Enteritis
Esophageal Motility Disorders
Esophageal Ulcer
Esophageal Varices
Esophagitis
Gastric Ulcer
Gastroesophageal Reflux Disease (GERD)
Gastroptosis
Hemorrhoids
Ileus
  • View other providers who treat Ileus
Inflammatory Bowel Disease
Intestinal Diverticulitis
Intestinal Diverticulosis
Intestinal Obstruction
Intestinal Ulcer
Liver Damage from Alcohol
Non-Alcoholic Fatty Liver Disease
Noninfectious Gastroenteritis and Colitis
Pancreatitis
Reflux Esophagitis
Retroperitoneum Cancer
Upper Digestive Tract Cancer
Vomiting Disorders
Colonoscopy
Colonoscopy, Proctosigmoidoscopy, and Sigmoidoscopy
Duodenal Polypectomy
Endoscopy
Flexible Sigmoidoscopy
Manometry
Pancreas Surgeries
Removal or Destruction of Rectal or Intestinal Tumor (incl. Colonoscopy, Proctosigmoidoscopy, Sigmoidoscopy and Control of Hemorrhage)
Rigid Proctosigmoidoscopy
Alcoholic Cirrhosis
Alcoholic Gastritis
Alcoholic Hepatic Failure
Alcoholic Hepatitis
Anal or Rectal Pain
Anal Sphincter Dysplasia
Autoimmune Hepatitis
Barrett's Esophagus
Barretts Esophagus with Dysplasia
Benign Neoplasm of the Digestive System
Biliary Cirrhosis
Boerhaave's Syndrome
Bowel Strangulation
Celiac Disease
Cholangitis
Chronic Cholecystitis
Colon Cancer
Congenital Achalasia
Congenital Anomaly Bile Duct
Congenital Anomaly Esophagus
Congenital Anomaly Intestine
Cystic Fibrosis
Diffuse Esophageal Spasm
Dysentery
Eosinophilic Esophagitis
Eosinophilic Gastritis
Esophageal Achalasia and Cardiospasm
Esophageal Diverticulum
Familial Adenomatous Polyposis
Folate Deficiency Anemia
Food Allergy
Gas-Bloat Syndrome
Gastrointestinal Malabsorption
Gastrojejunal Ulcer
Gastroparesis
Heartburn
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
Indigestion
Infectious Diarrheal Disease
Irritable Bowel Syndrome
Ischemic Colitis
Lactose Intolerance
Large Intestine Infarction
Liver Abscess
Long COVID Disorder
Mallory-Weiss Syndrome
Megacolon
Mesenteric Panniculitis
Nausea
  • View other providers who treat Nausea
Neoplasm of Gastrointestinal Tract
Neurogenic Bowel
Non-Neonatal Jaundice
Pancreatic Pseudocyst
Pelvic Abscess
Pouchitis
Primary Biliary Cholangitis
Primary Sclerosing Cholangitis
Pyloric Stenosis
Rectal Ulcer
Sclerosing Mesenteritis
Spleen Cyst
Splenic Infarct
Splenomegaly
Ulcerative Colitis
Unexplained Weight Loss
Viral Enteritis
Viral Hepatitis
Vitamin B Complex Deficiency
Vitamin B12 Anemia
Vitamin_Deficiency
Biliary Drainage
Colon Cancer Screening
Colorectal Cancer Screening
Fecal Impaction Removal
Gallbladder Scan
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
Screening Colonoscopy
Sigmoidoscopy
Ultrasound, Endoanal
Ultrasound, Esophageal
VAP Lipid Testing
Wireless pH Testing

Insurance Accepted

* Please verify this information when scheduling an appointment.
  • MagnaCare PPO
  • BluePPO HSA PPO
    SimplyBlue/Simply Blue Plus PPO
  • HealthyBlue Advantage
  • Freedom
    Liberty
  • BlueCard PPO
  • Fidelis Care
  • APCN Open Access Aetna Select
    Elect Choice (Open Access) EPO
    Aetna HMO
    Premier Care Network Plus - Innovation Health
    Select
    AWH NJ Choice MultiTier - Standard Savings
    Savings Plus of Metro, NY
    Open Choice PPO
    APCN Choice POS II
    Choice Plus POS II
    AWH NJ Choice MultiTier POS II
    Managed Choice (Open Access) POS
  • Cigna PPO
    Open Access Plus
    LocalPlus
    Cigna HMO
  • Nexus Open Access
    Choice Plus POS
    Options PPO
    Navigate Plus POS
    Navigate HMO
  • MVP Health Plan EPO
  • Empire Hospital
    Empire Hospital/Medical (Trad)
    Blue Acess Employer Sponsored
    Empire Blue Cross Blue Shield PPO

Locations

  1. 1 Main Street Dialysis Center
    3 N Main St, Freeport, NY 11520
    Icon Directions Right Arrow Directions Phone Icon (516) 623-5076

Patient Satisfaction

Likelihood to recommend Dr. Aja-Onu
3.3
Based on 16 Reviews
5 Stars (8)
4 Stars (1)
3 Stars (1)
2 Stars (0)
1 Star (6)

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Patient Reviews
Nov 14, 2022
I was at South Nassau in 2019. No one could figure out what was wrong with me. Infectious disease doctor and staff doctor arguing over what I might of had. Dr. Onu was the only one to figure out I had mono. He was so kind and caring. I will never forget his kindness. Checked on me often. Very kind and caring individual.
— Nov 14, 2022
See more reviews on Healthgrades
Photo: Dr. Iheanyichukwu Aja-Onu, MD
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Dr. Aja-Onu's Office & Staff

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  • Staff friendliness and courteousness
  • Total wait time (waiting & exam rooms)

Experience with Dr. Aja-Onu

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  • How well provider listens and answers questions
  • Hpends appropriate amount of time with patients

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About Me

Languages Spoken
Afrikaans
Languages Spoken
Specialties*
Gastroenterology
Internal 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.
Education

Education

Medical Education
  • UNIVERSITY OF NIGERIA / COLLEGE OF MEDICINE
    1986
Medical Education

Board Certifications

Board Certifications
  • Gastroenterology and Internal Medicine
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.
Common Questions and Answers
Responses are sourced directly from patients.
Does Dr. Aja-Onu communicate via email?
No users said yes.
Yes
(0)
No
(1)
Does Dr. Aja-Onu offer telehealth services or virtual visits?
2 users said yes.
Yes
(2)
No
(0)
Does Dr. Aja-Onu offer an online patient portal?
2 users said yes.
Yes
(2)
No
(0)
Does Dr. Aja-Onu have free onsite parking?
2 users said yes.
Yes
(2)
No
(0)
Does Dr. Aja-Onu offer weekend visits?
1 user said yes.
Yes
(1)
No
(0)
Does Dr. Aja-Onu offer evening visits?
1 user said yes.
Yes
(1)
No
(0)
Does Dr. Aja-Onu specialize in working with children or adolescents?
No responses yet.
Yes
(0)
No
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Does Dr. Aja-Onu specialize in working with seniors?
No responses yet.
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(0)
No
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Does Dr. Aja-Onu specialize in couples therapy?
No responses yet.
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(0)
No
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Does Dr. Aja-Onu specialize in working with LGBTQ+ community?
No responses yet.
Yes
(0)
No
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Does Dr. Aja-Onu accept insurance?
No responses yet.
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Frequently Asked Questions

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. Iheanyichukwu Aja-Onu, MD. To arrange an appointment, call the number on Dr. Aja-Onu's profile.

Dr. Aja-Onu frequently treats the following conditions: Peptic Ulcer, Gastrointestinal Bleeding and Gallstones. See more on Sharecare.

Dr. Iheanyichukwu Aja-Onu, MD is affiliated with Mercy Medical Center, Mount Sinai South Nassau and Saint John's Episcopal Hospital at South Shore.

Yes, Dr. Iheanyichukwu Aja-Onu, MD holds board certification in Gastroenterology and Internal Medicine.

Hospital Affiliations

  • Mercy Medical Center

    1000 N Village Ave, Rockville Centre, NY

  • Mount Sinai South Nassau

    1 Healthy Way, Oceanside, NY

  • Saint John's Episcopal Hospital at South Shore

    327 Beach 19th St, Far Rockaway, NY