IHEANYICHUKWU AJA-ONU M.D.
NPI 1720077944
Internal Medicine - Gastroenterology in Freeport, NY

Q: What is Iheanyichukwu Aja-onu's NPI number?

The NPI number for Iheanyichukwu Aja-onu is 1720077944. It was assigned to this individual provider in the NPPES registry on October 20, 2005.

Q: What is Iheanyichukwu Aja-onu's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Active since October 20, 2005PECOS EnrolledAccepts Medicare Assignment

98.81/100

CMS Quality Rating

3 N MAIN ST, FREEPORT, NY 11520(516) 623-5076(516) 623-5076 Get Directions Write a Review

NPPES record last updated: January 5, 2021. Verified against the NPPES registry weekly; last sync: August 16, 2026.

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About Iheanyichukwu Aja-onu M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

IHEANYICHUKWU AJA-ONU M.D. (NPI 1720077944) is an individual gastroenterology provider in Freeport, New York, licensed in New York (203413) and active in the NPI registry since October 2005. He is enrolled in Medicare PECOS, is affiliated with Long Island Jewish Medical Center, and is a graduate of State University Of New York Downstate Medical Center (1996).

NPPES Registry Identity

NPI1720077944

Entity TypeIndividualMale

Primary Taxonomy207RG0100X

Provider Legal NameIHEANYICHUKWU AJA-ONUCredential: M.D.

Location Address3 N MAIN STFreeport, NY 11520-2218

Mailing AddressPo Box 37216Elmont, NY 11003-7216 · (516) 623-5076 · Fax (516) 623-0312

Phone(516) 623-5076

Fax(516) 623-5076

Sole ProprietorNo

Medical School CMSState University Of New York Downstate Medical CenterGraduated 1996

Enumeration DateOctober 20, 2005

Last NPPES UpdateJanuary 5, 2021

NPPES CertifiedJanuary 5, 2021

✔ NPI 1720077944 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · GastroenterologyAllopathic & Osteopathic Physicians

Taxonomy Code207RG0100X

License✔ Licensed in NY · 203413

Definition

An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.

3 N MAIN ST, Freeport, NY 11520

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Other Identifiers 1

Medicaid01956665NY

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Iheanyichukwu Aja-onu M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID5496721870

PECOS Enrollment IDI20040907001363

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 12

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232

Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.

5,406 services665 patients

Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222

Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.

854 services684 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

264 services142 patients

Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope 43239

This procedure involves using a thin, flexible tube with a light and camera, known as an endoscope, to examine the esophagus, stomach, and upper part of the small intestine. Small tissue samples are taken for further examination to help diagnose various conditions.

142 services142 patients

Insertion of stomach tube using a flexible endoscope 43246

This procedure involves the use of a flexible endoscope, a thin tube with a light and camera, to insert a stomach tube. It helps doctors view and access your stomach without surgery. It's typically performed under sedation to ensure comfort.

70 services66 patients

Diagnostic exam of large bowel using a flexible endoscope 45378

This procedure, known as a colonoscopy, involves using a flexible tube with a light and camera to examine the large intestine. It helps detect any abnormalities such as polyps or inflammation. It's a standard procedure to ensure gut health.

59 services58 patients

Initial nursing facility care with high level of medical decision making, per day, if using time, 50 minutes or more 99306

An initial nursing facility visit is your first meeting with your healthcare team at a nursing facility. Lasting typically 45 minutes, this appointment involves a comprehensive health assessment and the creation of your personalized care plan. It's a crucial step to ensure your health and well-being.

55 services45 patients

Removal of polyps or growths of large bowel using an endoscope with mechanical snare 45385

This procedure involves using a thin, flexible tube called an endoscope to examine the large bowel. If any abnormal growths or polyps are found, a tool called a mechanical snare is used to remove them. This is a common method to prevent potential health issues.

46 services46 patients

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

41 services41 patients

Biopsy of large bowel using a flexible endoscope 45380

A biopsy of the large bowel using a flexible endoscope is a procedure where a thin, flexible tube with a camera is inserted through the rectum to examine the bowel. If abnormal tissue is found, a small sample is taken for further examination. This helps in diagnosing conditions like inflammation, polyps, or cancer.

19 services19 patients

Removal of stone or debris from bile or pancreatic duct using a flexible endoscope 43264

This procedure, called an endoscopic retrograde cholangiopancreatography (ERCP), involves using a flexible tube with a camera (endoscope) to locate and remove stones or debris from your bile or pancreatic duct. It's a non-surgical method to clear the ducts, enhancing your digestive health.

18 services16 patients

Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223

Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.

11 services11 patients

Hospital Affiliations CMS Care Compare 4

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Long Island Jewish Medical Center

Acute Care Hospitals · New Hyde Park, NY

3/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number330195

Location270 - 05 76th AvenueNew Hyde Park, NY 11040 · Nassau County

Emergency services Birthing friendly

Mount Sinai South Nassau

Acute Care Hospitals · Oceanside, NY

2/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number330198

LocationOne Healthy WayOceanside, NY 11572 · Nassau County

Emergency services Birthing friendly

Mercy Medical Center

Acute Care Hospitals · Rockville Centre, NY

3/5 CMS rating

OwnershipVoluntary non-profit - Church

CMS Certification Number330259

Location1000 North Village AvenueRockville Centre, NY 11570 · Nassau County

Emergency services Birthing friendly

St John's Episcopal Hospital At South Shore

Acute Care Hospitals · Far Rockaway, NY

1/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number330395

Location327 Beach 19th StreetFar Rockaway, NY 11691 · Queens County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 11520 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$154.28 typical visit price

range $67.40 – $203.53

Typical copayment $38.57 (range $16.85 – $50.88)

Most-billed visit code 99204

Established Patient

$117.62 typical visit price

range $21.66 – $164.45

Typical copayment $29.40 (range $5.41 – $41.11)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

98.81/100

MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program

Scored through an Alternative Payment Model

Quality

80.63

Promoting Interoperability

Improvement Activities

Other Providers at the Same Location NPPES 2

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MAIN STREET DIALYSIS CENTER LLC

Clinic/Center (End-Stage Renal Disease (ESRD) Treatment)

3 N MAIN ST
FREEPORT, NY 11520

Nassau County (516) 825-2076

MAIN STREET KIDNEY GROUP

Internal Medicine (Nephrology)

3 N MAIN ST
FREEPORT, NY 11520

Nassau County (516) 623-5076

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Iheanyichukwu Aja-onu's NPI number?

The NPI number for Iheanyichukwu Aja-onu is 1720077944. It was assigned to this individual provider in the NPPES registry on October 20, 2005.

Where is Iheanyichukwu Aja-onu located?

Iheanyichukwu Aja-onu practices at 3 N Main St, Freeport, NY 11520. The listed phone number is (516) 623-5076.

What is Iheanyichukwu Aja-onu's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.

Is Iheanyichukwu Aja-onu enrolled in Medicare?

Yes. Iheanyichukwu Aja-onu is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Is Iheanyichukwu Aja-onu affiliated with any hospitals?

According to CMS data, Iheanyichukwu Aja-onu is affiliated with Long Island Jewish Medical Center, Mount Sinai South Nassau, Mercy Medical Center and St John's Episcopal Hospital At South Shore.

When was this NPI record last updated?

The NPPES record for Iheanyichukwu Aja-onu was last updated on January 5, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.