Dr. Iheanyichukwu Aja-Onu, MD, FASGE, FACG?
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Dr. Iheanyichukwu Aja-Onu, MD, FASGE, FACG, Gastroenterologist

Dr. Iheanyichukwu Aja-Onu, MD, FASGE, FACG

Gastroenterologist | Gastroenterology

1 Healthy Way Attn: Physician Bill Oceanside NY, 11572

About

Dr. Iheanyichukwu Aja-Onu is a gastroenterologist practicing in Oceanside, NY. Dr. Aja-Onu specializes in the digestive system and its diseases that affect the gastrointestinal tract, which include organs from the mouth to the anus as well as liver disorders. Gastroenterology includes conditions such as hepatitis, peptic ulcer disease, colitis, nutritional problems and irritable bowel syndrome. Dr. Aja-Onu performs colonoscopy and endoscopy procedures and provides accurate and thorough care for patients suffering from digestive issues.

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Education and Training

Univ Of Nigeria- Coll Of Med- Enugu- Anambra- Nigeria 1986

University Of Nigeria Faculty Of Med University Of Nigeria Teaching Hospital 1986

Board Certification

Internal MedicineAmerican Board of Internal MedicineABIM- Gastroenterology

Provider Details

MaleEnglish

Residency

  • Suny Hlth Sci Ctr Brooklyn, Gastroenterology; St Johns Espiscpl Hsp-S Shr, Internal Medicine  
  • NewYork-Presbyterian/Columbia University Medical Center (Advanced Training)

Internships

  • SUNY Downstate Medical Center

Fellowships

  • SUNY Downstate Medical Center

Articles and Publications

  • Co-Author of Many Papers and Publications

Hobbies / Sports

  • Traveling

Favorite professional publications

  • Gastroenterology Journal

Dr. Iheanyichukwu Aja-Onu, MD, FASGE, FACG's Practice location

Practice At 1 Healthy Way Attn: Physician Billing

1 Healthy Way Attn: Physician Bill -
Oceanside, NY 11572
Get Direction
New patients: 516-593-7500, 516-255-1600
Fax: 516-255-4672, 516-593-7535

Ocean Gastroenterology

3 N Main St -
Freeport, New York 11520
Get Direction
New patients: 516-623-5076

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Media Releases

Get to know Gastroenterologist Dr. Iheanyichukwu Aja-Onu, who serves patients in Oceanside, New York.

Board-certified gastroenterologist, Dr. Aja-Onu, has over three decades of experience in his field. In addition to his affiliation with Mercy Medical Center and St. Catherine of Siena Medical Center, he serves patients at Mount Sinai South Nassau in Oceanside, New York.

Mount Sinai South Nassau is an award-winning, 455-bed, acute care, not-for-profit teaching hospital that provides inpatient, outpatient, home health, restorative, preventive, and emergency medicine services to the area. Prior to his current endeavors, the doctor served as the Chief of Gastroenterology with the SUNY Downstate Medical Center in New York City, New York for over a decade.

His acclaimed career in medicine began in 1986 when he earned his medical degree from the University of Nigeria, Nsukka. Upon relocating to the United States, he went on to complete his internship and residency in internal medicine at St. John’s Episcopal Hospital in New York City, followed by his fellowship in gastroenterology at SUNY Downstate Medical Center. 

The co-author of many papers and publications, Dr. Aja-Onu is board-certified in both internal medicine and gastroenterology by the American Board of Internal Medicine – a physician-led, non-profit, independent evaluation organization driven by doctors who want to achieve higher standards for better care in a rapidly changing world. Additionally, he is a Fellow of the American Society for Gastrointestinal Endoscopy and a Fellow of the American College of Gastroenterology. 

Gastroenterology is the branch of medicine focused on the digestive system and its disorders. A gastroenterologist is a physician who has extensive training in the diagnosis and treatment of disorders related to the esophagus, stomach, small intestines, colon, liver, pancreas, and biliary system. 

Outside of the office, Dr. Aja-Onu enjoys traveling.

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WINTHROP-UNIVERSITY HOSPITALl

259 FIRST STREET MINEOLA NY 11501

Head west 285 ft
Turn right onto Nassau Parkway 368 ft
Turn right onto Oceanside Road 1467 ft
Turn left onto Merrick Road 889 ft
Turn right onto North Long Beach Road 2.0 mi
Continue straight onto Long Beach Road 1535 ft
Turn left onto Beech Street 1096 ft
Turn right onto Hempstead Avenue 992 ft
Continue straight onto South Franklin Street 2.1 mi
Continue straight onto Franklin Avenue 1.6 mi
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Turn left onto 2nd Street 950 ft
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MERCY MEDICAL CENTERl

1000 NORTH VILLAGE AVENUE ROCKVILLE CENTRE NY 11570

Head west 285 ft
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Turn left onto Merrick Road 889 ft
Turn right onto North Long Beach Road 1.2 mi
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FRANKLIN HOSPITALl

900 FRANKLIN AVENUE VALLEY STREAM NY 11580

Head west 285 ft
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NASSAU UNIVERSITY MEDICAL CENTERl

2201 HEMPSTEAD TURNPIKE EAST MEADOW NY 11554

Head southeast on North Main Street 729 ft
Turn left onto Sunrise Highway (NY 27) 4186 ft
Take the ramp on the right 598 ft
Merge left onto Meadowbrook State Parkway (M) 4.3 mi
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SOUTH NASSAU COMMUNITIES HOSPITALl

ONE HEALTHY WAY OCEANSIDE NY 11572

Head southeast on North Main Street 681 ft
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Keep in the middle 309 ft
Turn left onto North Long Beach Road 1185 ft
Turn left onto Merrick Road 889 ft
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Turn left onto Nassau Parkway 368 ft
Turn left 285 ft
You have arrived at your destination, on the left

MERCY MEDICAL CENTERl

1000 NORTH VILLAGE AVENUE ROCKVILLE CENTRE NY 11570

Head northwest on North Main Street 1.1 mi
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Take the ramp on the left 426 ft
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