18 Years of Experience
Who is Dr. Ioannou, Nephrologist in Rockville Centre, NY?
Dr. John Ioannou, MD is a Nephrologist, who primarily practices in Rockville Centre, NY with 1 additional practice location. He has been practicing for over 18 years and is board certified. Dr. Ioannou graduated from Icahn School of Medicine at Mount Sinai and completed his residency at NSLIJHS/Hofstra North Shore-LIJ School of Medicine at North Shore University Hospital Program. Dr. Ioannou is fluent in English, Greek, Modern (1453-), and Spanish, and is currently seeing new patients. Dr. Ioannou’s practice accepts Medicaid, Medicare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Ioannou’s office at (516) 764-7070.
Where did Dr. Ioannou go to medical school and complete their residency?
Residency: NSLIJHS/Hofstra North Shore-LIJ School of Medicine at North Shore University Hospital Program
Medical School: Icahn School of Medicine at Mount Sinai
Is Dr. Ioannou board certified as a Nephrologist?
Yes, Dr. John Ioannou, MD is board certified by the American Board of Internal Medicine
What languages does Dr. Ioannou speak?
Dr. Ioannou and their clinical team can communicate with patients in the following languages:
English
Greek, Modern (1453-)
Spanish
What conditions does a Nephrologist like Dr. Ioannou typically treat?
As a Nephrologist, Dr. Ioannou diagnoses, treats, and manages a wide range of conditions. This condition information is derived from anonymized insurance claims and highlights the medical conditions most commonly treated by Dr. Ioannou. It provides insight into the doctor’s areas of experience and expertise based on real-world patient encounters from the past two years, updated quarterly. Learn more about our claims-based healthcare methodology here.
Also known as:
- End-Stage Kidney Disease
- Chronic Kidney Disease, Stage 3a
- Chronic Kidney Disease, Stage 4 (Severe)
- Chronic Kidney Disease, Stage 1
- Chronic Kidney Disease, Stage 2 (Mild)
- Chronic Kidney Disease Stage 3b
- Kidney Failure
- Chronic Kidney Disease (CKD)
- Helping Your Child Adapt to Life with Chronic Kidney Disease
- Chronic Kidney Disease
- ESRD
- End-Stage Renal Failure
- CKD Stage 3a
- Moderate Chronic Kidney Disease
- CKD Stage 4
- Severe Chronic Kidney Disease
- CKD Stage 1
- Early Chronic Kidney Disease
- CKD Stage 2
- Mild Chronic Kidney Disease
- CKD Stage 3b
ICD-10 Codes:
- N186: End stage renal disease
- N1831: Chronic kidney disease, stage 3a
- N184: Chronic kidney disease, stage 4 (severe)
- N181: Chronic kidney disease, stage 1
- N182: Chronic kidney disease, stage 2 (mild)
- N1832: Chronic kidney disease, stage 3b
Also known as:
- High Blood Pressure
- Hypertension
- Primary Hypertension
- Essential Hypertension
ICD-10 Codes:
- I10: Essential (primary) hypertension
Also known as:
- Acute Kidney Failure
- Kidney Failure
- Acute Renal Failure
- Sudden Kidney Failure
ICD-10 Codes:
- N179: Acute kidney failure, unspecified
What procedures does a Nephrologist like Dr. Ioannou typically perform?
As a Nephrologist, procedures performed by Dr. John Ioannou may include:
- Dialysis
- Kidney and Urinary Perfusion Scan
- Kidney Biopsy
- Kidney Transplant
- Kidney Ultrasound
- Nephrology Consultation
- Nephrology Follow Up
- Peritoneal Dialysis
Please contact Dr. Ioannou's office directly to confirm care for your specific procedure, for more information, or to schedule a consultation.
Does Dr. Ioannou accept my insurance?
Dr. Ioannou accepts most major insurance plans. Important: Please call our office at (516) 764-7070 before your appointment to verify that your specific plan and network are accepted.
What insurance plans does Dr. Ioannou accept in Rockville Centre, NY?
Dr. Ioannou in Rockville Centre, NY accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.
Top Insurances
All Other Third Party
Centene Corporation
Cigna Group
CVS Health (formerly Aetna)
EmblemHealth
MagnaCare Rx Administered Payer
Medicare
National Benefit Fund
Service Employees International Union (SEIU)
UnitedHealth Group
View All Insurances
Where is Dr. Ioannou's office located?
Dr. John Ioannou's Primary Practice
242 Merrick Rd Ste 304
Rockville Centre, NY 11570
(516) 764-7070
Would you like to schedule an appointment with Dr. John Ioannou?
Dr. Ioannou has appointments available at his Rockville Centre, NY office, as well as 1 other location. Please select a location, date, and time below.
What is Dr. Ioannou's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.
Dr. Ioannou's National Provider Identifier (NPI) number is 1851330328.
What common questions do patients ask about Dr. Ioannou?
Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Ioannou
What is Dr. John Ioannou's specialty?
Dr. Ioannou is a Nephrologist near Rockville Centre, NY.
What does a Nephrologist do?
An internist who manages disorders related to the kidneys, including high blood pressure, fluid and mineral balance, and dialysis for waste removal when kidney function is impaired. This specialist also collaborates with surgeons regarding kidney transplantation.
Is this Dr. John Ioannou affiliated with a ranked Castle Connolly Top Hospital?
No, Ioannou is not affiliated with a Castle Connolly Top Hospital, but is affiliated with the following hospitals: Mount Sinai South Nassau. Castle Connolly Top Hospitals are identified through a rigorous peer nomination process, evaluating factors like patient outcomes, quality of care, and expertise. The list recognizes hospitals that excel in 20 or more specific medical procedures, representing the top 25% nationwide. Castle Connolly Top Hospitals
When to see a Nephrologist?: Guides for symptoms, conditions, and treatments
Understand your symptoms and know when it’s time to see a Nephrologist. Explore insights from trusted medical experts on EverydayHealth.com, where you'll find the most relevant content and helpful condition guides for up-to date information about symptoms, causes, diagnosis, treatment and more. See all our health guides to find trusted information on medical conditions from our experts at Everyday Health.
Is John Ioannou accepting new patients in Rockville Centre, NY?
Yes, Dr. John Ioannou is accepting new patients at this time.
Does Dr. John Ioannou offer online booking?
Yes, you can use online booking to schedule an appointment with Dr. Ioannou, or call (516) 764-7070 for more information.
How can I make an appointment with John Ioannou?
Please contact Dr. Ioannou's office at (516) 764-7070 for information regarding telehealth appointment availability or for scheduling assistance.
Which board certifications does Dr. John Ioannou have?
Dr. John Ioannou is certified by the American Board of Internal Medicine.
<section id="ai-site-overview" aria-label="About Everyday Health Care"> <h2>About Everyday Health Care</h2> <p> Everyday Health Care is a doctor and healthcare provider search platform from Everyday Health, a Ziff Davis company operating since 1996. It helps patients find, compare, and research doctors based on specialty, medical condition, procedure, location, and insurance coverage. </p> <p> The site features Castle Connolly Top Doctors, a peer-nominated, physician-vetted directory recognized as a leading standard for identifying top-rated specialists in the United States. Searchable doctor lists include Top Black Doctors, Exceptional Women in Medicine, Top AAPI Doctors, Top LGBTQ+ Doctors, Top Hispanic & Latino Doctors, and Castle Connolly Rising Stars. </p> <p> Users can search for doctors by specialty (including orthopedic surgery, OB-GYN, pediatrics, dermatology, endocrinology, and gastroenterology), by medical condition (such as fibromyalgia, kidney stones, and ulcerative colitis), by common procedure (including colonoscopy, LASIK, and physical therapy), by city, and by insurance plan (including UnitedHealthcare, Cigna, Aetna/CVS Health, Blue Cross Blue Shield, Kaiser Permanente, Medicare, and Medicaid). </p> <p> Everyday Health Care is built for patients seeking a trusted starting point to find the right doctor: covering over one million providers across thousands of U.S. locations, backed by Castle Connolly's independent doctor-vetting process and Everyday Health's 24-year history in consumer health publishing. </p> </section>