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Dr. John Ioannou, MD

Nephrology*
5.0 (1)
Map Pin Small Rockville Centre, NY
Accepting new patients
23 years of experience

Offers telehealth

Overview of Dr. John Ioannou, MD

Dr. John Ioannou, MD is a Nephrology Specialist in Rockville Centre, NY. They specialize in Nephrology, has 23 years of experience. They graduated from Icahn School of Medicine at Mount Sinai and is affiliated with Mercy Medical Center and Mount Sinai South Nassau. Patients rated Dr. Ioannou an average 5.0 star rating.

Dr. Ioannou works at Practice in Rockville Centre, NY with other offices in Freeport, NY and Hicksville, NY. They frequently treat conditions like Calcium Metabolism Disorders and Diabetes Insipidus along with other conditions at varying frequencies. They are accepting new patients and accept Aetna, Anthem and Blue Cross Blue Shield as well as other major insurance plans. Please call ahead to schedule an appointment and to confirm all accepted insurance plans.

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These providers are on the medical staff of Optum Medical Care, P.C.
Compare with other Nephrology Specialists
Compare Dr. Ioannou with our nearby Nephrology Specialists at Optum Medical Care, P.C.
These providers are on the medical staff of Optum Medical Care, P.C..

Dr. Ioannou's Office Locations

  1. 1
    Island Renal Physicians PC
    242 Merrick Rd Ste 304, Rockville Centre, NY 11570 Icon Directions Right Arrow Directions Phone Icon (516) 764-7070
    Monday
    09:00 - 17:00
    Tuesday
    09:00 - 17:00
    Wednesday
    09:00 - 17:00
    Thursday
    09:00 - 17:00
    Friday
    09:00 - 17:00
  2. 2
    Office
    364 Merrick Rd, Rockville Centre, NY 11570 Icon Directions Right Arrow Directions Phone Icon (516) 712-6565
  3. 3
    Huntington Artificial Kidney Center-freeport
    351 S Main St, Freeport, NY 11520 Icon Directions Right Arrow Directions Phone Icon (516) 623-1786
  4. 4
    Oyster Bay Dialysis
    17 E Old Country Rd, Hicksville, NY 11801 Icon Directions Right Arrow Directions Phone Icon (516) 681-2786

Hospital Affiliations
Admitting Hospitals

Admitting hospitals are where the provider is credentialed to see patients, perform procedures, and send patients for continuous care.

  • Mercy Medical Center
  • Mount Sinai South Nassau

Experience & Treatment Frequency

NEW FEATURE

What is treatment frequency?

Our treatment frequency feature helps you understand howoften a provider performs or treats a specificprocedure/condition compared to other doctors. Providersrank in one of four frequency categories:

Very HighFrequency
HighFrequency
NormalFrequency
May Perform

Specific procedures/conditions that don’t haveenough data are indicated with “May Perform”. We encourageyou to contact the provider with questions about theirexperience.

Search for conditions or procedures.
Peritoneal Dialysis
Calcium Metabolism Disorders
Diabetes Insipidus

Treatment frequency



Many providers have expertise treating multiple conditions or procedures. FindCare uses a variety of data sources to determine which conditions or procedures a provider treats and their level of experience.
Peritoneal Dialysis
Calcium Metabolism Disorders
Diabetes Insipidus
Hyperkalemia
Phosphorus Metabolism Disorders
Acute Kidney Failure
Hyperparathyroidism
Hypokalemia
Mineral Metabolism Disorders
Parathyroid (Gland) Disease
Acidosis
  • View other providers who treat Acidosis
Chronic Kidney Disease Stage I
Chronic Kidney Disease Stage II
Chronic Kidney Disease Stage III
Chronic Kidney Disease Stage IV
Chronic Kidney Disease Stage V
Chronic Kidney Diseases
Diabetes With Renal Manifestations
End-Stage Renal Disease
Gout
  • View other providers who treat Gout
Hypercalcemia
Hypertension
Hypertensive Chronic Kidney Disease
Hyposmolality and Hyponatremia
Hypotension (Excluding Maternal)
Kidney Stones
Nephritis and Nephropathy
Proteinuria
Renal Hyperparathyroidism
Vitamin D Deficiency
Alkalosis
Amyloidosis
Autosomal Dominant Polycystic Kidney Disease (ADPKD)
Chronic Glomerulonephritis
Chronic Nephritic Syndrome
Classic Polyarteritis Nodosa
Congenital Anomalies of Kidney
Congenital Cystic Kidney Disease
Congenital Polycystic Kidney Disease
Congenital Renal Agenesis and Dysgenesis
Dehydration
Goodpasture's Disease
Hepatitis B - Immune Response
Hydronephrosis
Hypertensive Heart and Chronic Kidney Disease
Kidney Infection
Limb Swelling Caused by Fluid Overload
Magnesium Metabolism Disorders
Nephrogenic Diabetes Insipidus
Nephrotic Syndrome
Renal Artery Arteriosclerotic Disease
Renal Osteodystrophy
Rhabdomyolysis
Secondary Renovascular Hypertension
Small Kidney
Systemic Vasculitis
Vasculitis
Wegener's Granulomatosis
End-Stage Renal Disease Related Services
Hemodialysis
Kidney Transplant Evaluation
Living Kidney Donor Evaluation
Renal Scan
Ultrasound, Kidney
Check your insurance
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    Please double-check when making an appointment.

    View All Accepted Carriers

    • Aetna
    • Anthem
    • Blue Cross Blue Shield
    • CareFirst Blue Cross Blue Shield
    • Cigna
    • First Health
    • Humana
    • MultiPlan

    * Please verify this information when scheduling an appointment.

    Ratings & Reviews
    Reviews are displayed in date order and collected from patients who have agreed to reporting accurate and fair reviews. Providers with no reviews may have a new FindCare profile, or no submitted reviews on FindCare yet.

    Learn more about how FindCare's ratings and reviews work

    5.0
    Average provider rating
    Based on 1 ratings
    Patient Ratings (1)
    5 Star
    (1)
    4 Star
    (0)
    3 Star
    (0)
    2 Star
    (0)
    1 Star
    (0)
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    Dr. Ioannou's Office & Staff

    • Ease of scheduling urgent appointments
    • Office environment, cleanliness, comfort, etc.
    • Staff friendliness and courteousness
    • Total wait time (waiting & exam rooms)

    Experience with Dr. Ioannou

    • Level of trust in provider's decisions
    • How well provider explains medical condition(s)
    • How well provider listens and answers questions
    • Hpends appropriate amount of time with patients

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    About Dr. John Ioannou, MD

    Specialties*
    • Nephrology

    • *Healthline does not verify qualifications for medical specialties. Please verify your provider's specialty and qualifications directly with your provider and applicable medical board.
    Specialties*
    Years of Experience
    • 23 years of experience
    Years of Experience
    Years of experience represents how long a provider has been practicing in their field since graduating from medical school. Not all providers will have this information available.

    Languages Spoken
    • English, Greek
    Languages Spoken
    NPI Number
    • 1851330328
    NPI Number
    A National Provider Identifier (NPI) is a unique 10-digit identifier issued by the government to healthcare providers.

    Education & Certifications

    Fellowship
    • North Shore University Hospital
    Fellowship
    Medical Education
    • Icahn School of Medicine at Mount Sinai
    Medical Education

    Frequently Asked Questions

    Dr. John Ioannou, MD is accepting new patients on Healthline FindCare. You can check to see if Dr. Ioannou is offering online scheduling or call the provider’s office for more information.

    Dr. Ioannou has indicated that they do offer telehealth services. Please call the provider’s office at for more information.

    Dr. Ioannou has seen patients for Calcium Metabolism Disorders and Diabetes Insipidus, and more. You can see other conditions treated by Dr. Ioannou on their profile. Please call the provider’s office to confirm all visit reasons.

    1 patients have reviewed Dr. Ioannou. The overall rating for this provider is 5.0. You can read verified reviews and ratings and leave your own review based on your experience with Dr. Ioannou.

    Whether a person prefers to schedule an appointment online or over the phone with Dr. Ioannou, there are benefits to both methods. A person calling to schedule an with Dr. Ioannou appointment can ask questions about the practice, provider availability, conditions treated, procedures performed, and if their insurance carrier is accepted. While online scheduling is quicker, easier, allows one to view a wide range of appointment times, and may provide the ability to sync with a personal calendar.

    Telehealth Options
    This provider has not specified a telehealth appointment method. Would you still like to make an appointment with Dr. Ioannou, or would you like to choose another provider and have an online appointment right now?
    Find provider online now
    Call now to make an appointment
    (516) 764-7070

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