JOHN MICHAEL IOANNOU M.D.
NPI 1851330328
Internal Medicine - Nephrology in Rockville Centre, NY

Q: What is John Ioannou's NPI number?

The NPI number for John Ioannou is 1851330328. It was assigned to this individual provider in the NPPES registry on June 6, 2006.

Q: What is John Ioannou's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Nephrology, with taxonomy code 207RN0300X.

Q: When was this NPI record last updated?

The NPPES record for John Ioannou was last updated on October 30, 2009. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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.

Active since June 06, 2006PECOS EnrolledAccepts Medicare Assignment

242 MERRICK RD, SUITE 304, ROCKVILLE CENTRE, NY 11570(516) 764-7070(516) 764-7073 Get Directions Write a Review

NPPES record last updated: October 30, 2009. Verified against the NPPES registry weekly; last sync: August 02, 2026.

On this page

About John Michael Ioannou M.d. NPPES

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

JOHN MICHAEL IOANNOU M.D. (NPI 1851330328) is an individual nephrology provider in Rockville Centre, New York, licensed in New York (231998) and active in the NPI registry since June 2006. He is enrolled in Medicare PECOS, is affiliated with Mount Sinai South Nassau, and is a graduate of Icahn School Of Medicine At Mount Sinai (2001).

NPPES Registry Identity

NPI1851330328

Entity TypeIndividualMale

Primary Taxonomy207RN0300X

Provider Legal NameJOHN MICHAEL IOANNOUCredential: M.D.

Location Address242 MERRICK RD, SUITE 304Rockville Centre, NY 11570-5254

Mailing Address242 Merrick Rd, Suite 304Rockville Centre, NY 11570-5254 · (516) 764-7070 · Fax (516) 764-7073

Phone(516) 764-7070

Fax(516) 764-7073

Sole ProprietorNo

Medical School CMSIcahn School Of Medicine At Mount SinaiGraduated 2001

Enumeration DateJune 6, 2006

Last NPPES UpdateOctober 30, 2009

✔ NPI 1851330328 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · NephrologyAllopathic & Osteopathic Physicians

Taxonomy Code207RN0300X

License✔ Licensed in NY · 231998

Definition

An internist who treats disorders of the kidney, high blood pressure, fluid and mineral balance and dialysis of body wastes when the kidneys do not function. This specialist consults with surgeons about kidney transplantation.

242 MERRICK RD, Rockville Centre, NY 11570

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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

John Michael Ioannou 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 ID1658383104

PECOS Enrollment IDI20060627000035

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 41

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.

828 services327 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.

596 services292 patients

Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month 99490

Chronic care management services involve a healthcare professional directing clinical staff in managing your chronic conditions. This includes the first 20 minutes per month of services like medication management, care coordination, and health monitoring to help improve your health and quality of life.

364 services74 patients

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233

Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.

351 services157 patients

Insertion of needle into vein for collection of blood sample 36415

This procedure involves inserting a small needle into a vein, typically in your arm, to collect a blood sample. It's a quick and simple process to help diagnose or monitor health conditions. You may feel a small prick, but discomfort is minimal.

320 services224 patients

Dialysis services, 4 or more physician visits per month (20 years or older) 90960

Dialysis is a treatment that filters and purifies your blood using a machine. It helps keep your fluids and electrolytes in balance when the kidneys can't do their job. This service includes 4 or more visits per month with a physician to monitor your health and adjust your treatment as needed.

252 services101 patients

Management using the results of remote vital sign monitoring per calendar month, first 20 minutes 99457

This service involves reviewing and managing your health data, which is remotely monitored and collected. Your vital signs like heart rate and blood pressure are tracked regularly throughout the month. The first 20 minutes of this data analysis per month is included in this service.

234 services33 patients

Blood test, comprehensive group of blood chemicals 80053

A comprehensive group of blood chemicals test, also known as a comprehensive metabolic panel, is a blood test that measures your sugar level, electrolyte and fluid balance, kidney function, and liver function. This helps to check your body's overall health.

218 services115 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.

210 services191 patients

Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count 85025

A Complete Blood Cell Count is a common test that measures various components of the blood, including red cells (carry oxygen), white cells (fight infection), and platelets (help blood clot). An automated test ensures accuracy. The differential count provides detailed information about white cell types.

187 services96 patients

Urinalysis, manual test 81002

A urinalysis is a simple, non-invasive test that checks the urine for various elements such as sugar, protein, and signs of infection. It can help detect many common conditions, including kidney disease and diabetes. The manual test involves a lab technician examining a urine sample.

160 services93 patients

Total protein level, urine 84156

The Total Protein Level in urine test measures the amount of protein present in your urine. This helps to check kidney health as high levels may indicate a problem. It's a simple, non-invasive procedure involving a urine sample.

153 services89 patients

Creatinine level to test for kidney function or muscle injury 82570

A creatinine level test measures the amount of creatinine in your blood. This substance is a waste product from normal muscle use. Higher levels can indicate possible kidney dysfunction or muscle injury. This test helps monitor kidney health.

152 services89 patients

Urine microalbumin (protein) level 82043

The urine microalbumin level test measures the amount of a protein called albumin in your urine. This test helps to detect early signs of kidney damage. High levels of albumin may suggest your kidneys aren't functioning properly. It's a simple, non-invasive test that involves providing a urine sample.

143 services85 patients

Blood test, lipids (cholesterol and triglycerides) 80061

A lipid panel is a blood test that measures fats and fatty substances, such as cholesterol and triglycerides. These substances are used by your body as a source of energy. High levels can lead to health issues, including heart disease.

133 services81 patients

Hemoglobin a1c level 83036

Hemoglobin A1c (HbA1c) is a test that measures your average blood sugar level over the past 2-3 months. It's used to monitor how well diabetes is being controlled. High levels may indicate that your diabetes treatment plan needs adjustment.

116 services65 patients

Parathormone (parathyroid hormone) level 83970

The Parathormone level test measures the amount of parathyroid hormone in your blood. This hormone controls calcium and phosphorus levels in the body, which are vital for bone health. Abnormal levels may indicate issues like kidney disease or parathyroid gland disorders.

105 services65 patients

Telephone or internet referral service, 30 minutes 99452

A telephone or internet referral service involves a 30-minute session where you can discuss your health concerns with a healthcare professional. They will listen to your symptoms, answer your questions, and guide you to the appropriate specialist or service for further assistance. This service is safe, confidential, and convenient.

101 services29 patients

Remote monitoring of physiologic parameters, initial supply of devices with daily recordings or programmed alerts transmission, each 30 days 99454

This service involves using devices to remotely track body functions like heart rate or blood pressure. These devices, provided initially, record data daily or send alerts if readings are abnormal. The service is renewed every 30 days.

101 services24 patients

Vitamin d-3 level 82306

A Vitamin D-3 level test measures the amount of Vitamin D-3, a crucial nutrient, in your body. This test helps identify if your levels are too low or too high. Low levels may lead to bone weakness, while high levels could harm your kidneys. It's a simple blood test.

91 services61 patients

Iron binding capacity 83550

Iron binding capacity is a blood test that measures how well your body can bind and transport iron. This helps your healthcare provider assess if your body has too little or too much iron, which can indicate certain health conditions.

85 services53 patients

Ferritin (blood protein) level 82728

A Ferritin level test measures the amount of ferritin, a protein that stores iron, in your blood. It helps determine how much iron your body is storing. If levels are low, it may indicate iron deficiency, while high levels could signify conditions like iron overload.

83 services53 patients

Iron level 83540

An iron level test measures the amount of iron in your blood. Iron is crucial for producing hemoglobin, a protein in red blood cells that carries oxygen throughout your body. This test helps identify iron deficiencies or excesses, which can lead to conditions like anemia or hemochromatosis.

83 services52 patients

Ultrasound study of arm and leg arteries 93922

An ultrasound study of arm and leg arteries is a non-invasive procedure that uses sound waves to create images of your arteries. It helps in checking blood flow, identifying blockages, or detecting other abnormalities in your arteries.

50 services50 patients

Dialysis services, 2-3 physician visits per month (20 years or older) 90961

Dialysis is a treatment that performs the function of healthy kidneys if they're not working properly. It removes waste and excess fluid from your blood. 2-3 physician visits per month are recommended for monitoring your health and adjusting your treatment as needed. This service is available for those aged 20 years and older.

47 services36 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.

46 services46 patients

Blood test, thyroid stimulating hormone (tsh) 84443

A TSH blood test measures the level of thyroid stimulating hormone in your body. This hormone is produced by the pituitary gland and regulates how your thyroid works. It's a simple procedure where a small amount of blood is drawn from your arm for analysis.

41 services32 patients

Management using the results of remote vital sign monitoring per calendar month, each additional 20 minutes 99458

This service involves analyzing your vital signs, like heart rate and blood pressure, remotely collected over a month. Each additional 20 minutes spent on management refers to extra time spent reviewing, interpreting your data, and planning your care. It's a critical part of ensuring your wellbeing.

41 services22 patients

Administration of influenza virus vaccine G0008

The administration of the influenza virus vaccine, also known as the flu shot, is a simple procedure to protect against the flu. A healthcare provider injects a small dose of the vaccine into your arm. This stimulates your immune system to produce antibodies, which will help your body fight off the flu if exposed.

40 services40 patients

Uric acid level, blood 84550

A blood uric acid level test measures the amount of uric acid in your blood. Uric acid is a waste product that your body produces when it breaks down purines, substances found in your body and in certain foods. High levels may lead to gout or kidney stones.

39 services34 patients

Influenza vaccine, inactivated 90653

The Influenza vaccine, inactivated, is a shot given to protect against the flu. It contains killed virus particles that help your body build immunity to the flu. It's recommended annually to keep your protection up-to-date. It's safe for ages 6 months and up.

37 services37 patients

Magnesium level 83735

A magnesium level test is a simple blood test that measures the amount of magnesium in your body. Magnesium is a crucial mineral that helps your nerves, muscles, and heart function properly. The test can help detect health conditions like kidney disease or malnutrition.

35 services25 patients

Thyroxine (thyroid chemical), free 84439

The Thyroxine (thyroid chemical), free test is a blood test that measures the level of free T4 in your body. T4 is a hormone produced by your thyroid gland and is essential for growth and metabolism. If your T4 levels are too high or too low, it could indicate a thyroid disorder.

35 services28 patients

Telephone medical discussion with physician, 21-30 minutes 99443

This service involves a 21-30 minute phone conversation with a physician. It's a chance for you to discuss your health concerns, symptoms or treatment plans. It's similar to an in-person consultation, but conducted over the phone for your convenience and safety.

33 services31 patients

Automated urinalysis test 81003

An automated urinalysis test is a routine examination that checks your urine for various substances. It can help identify potential health issues such as kidney problems or diabetes. The test uses a machine to analyze a small urine sample, providing quick and accurate results.

30 services30 patients

Injection of drug or substance under skin or into muscle 96372

This procedure involves administering medication directly under the skin or into a muscle. A small needle is used to inject the drug, allowing it to be absorbed quickly into the bloodstream. It's a common method for delivering a variety of medications.

25 services11 patients

Remote monitoring of physiologic parameters, initial set-up and patient education on use of equipment 99453

Remote monitoring of physiologic parameters involves using special equipment to track vital signs like heart rate and blood pressure from a distance. The initial set-up includes installing the device and teaching the patient how to use it correctly for accurate readings.

23 services23 patients

Hemodialysis procedure with physician evaluation 90935

Hemodialysis is a treatment that uses a machine to filter waste and excess fluid from your blood when your kidneys can't. A physician checks your health before, during, and after the procedure to ensure it's working effectively for you.

20 services17 patients

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213

This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.

20 services19 patients

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

17 services14 patients

Phosphate level 84100

A phosphate level test measures the amount of phosphate in your blood. Phosphate is a chemical that contains the mineral phosphorus, crucial for energy production, muscle and nerve function, and bone growth. Imbalances may indicate kidney disease or other health issues.

14 services11 patients

Hospital Affiliations CMS Care Compare 3

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

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

Chsli St Joseph Hospital

Acute Care Hospitals · Bethpage, NY

2/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number330332

Location4295 Hempstead TurnpikeBethpage, NY 11714 · Nassau County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 11570 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.

Reported Quality Measures

Colorectal Cancer Screening

Percentage of adults 50-75 years of age who had appropriate screening for colorectal cancer

3%306 patients1/55-star benchmark: 85%

e-Prescribing

At least one permissible prescription written by the MIPS eligible clinician is queried for a drug formulary and transmitted electronically using certified EHR technology.

98%1,951 patients4/55-star benchmark: 99%

Medication Reconciliation

The MIPS eligible clinician performs medication reconciliation for at least one transition of care in which the patient is transitioned into the care of the MIPS eligible clinician.

100%131 patients5/55-star benchmark: 100%

Patient-Specific Education

The MIPS eligible clinician must use clinically relevant information from CEHRT to identify patient-specific educational resources and provide access to those materials to at least one unique patient seen by the MIPS eligible clinician.

15%592 patients1/55-star benchmark: 97%

Preventive Care and Screening: Body Mass Index (BMI) Screening and Follow-Up Plan

Percentage of patients aged 18 years and older with a BMI documented during the current encounter or during the previous twelve months AND with a BMI outside of normal parameters, a follow-up plan is documented during the encounter or during the previous…

18%566 patients1/55-star benchmark: 97%

Preventive Care and Screening: Influenza Immunization

Percentage of patients aged 6 months and older seen for a visit between October 1 and March 31 who received an influenza immunization OR who reported previous receipt of an influenza immunization

54%525 patients3/55-star benchmark: 88%

Provide Patient Access

At least one patient seen by the MIPS eligible clinician during the performance period is provided timely access to view online, download, and transmit to a third party their health information subject to the MIPS eligible clinician's discretion to withhold…

66%592 patients3/55-star benchmark: 100%

Secure Messaging

For at least one unique patient seen by the MIPS eligible clinician during the performance period, a secure message was sent using the electronic messaging function of CEHRT to the patient (or the patient-authorized representative), or in response to a secure…

0%592 patients1/55-star benchmark: 89%

View, Download, or Transmit (VDT)

At least one patient seen by the MIPS eligible clinician during the performance period (or patient-authorized representative) views, downloads or transmits their health information to a third party during the performance period.

2%592 patients

Providers report different measures because they deliver different services; reporting more or less information is not a reflection of quality. Star ratings appear only where CMS assigned them.

Referred Medical Equipment & Supplies CMS DME claims 5

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Tacrolimus, immediate release, oral, 1 mg J7507

Treatment-Treatment - Miscellaneous · category RX029N

4 suppliers31 claims3,135 services$0.28 avg. paid by Medicare

Prednisone, immediate release or delayed release, oral, 1 mg J7512

Treatment-Treatment - Miscellaneous · category RX029N

2 suppliers11 claims1,800 services$0.01 avg. paid by Medicare

Mycophenolate mofetil, oral, 250 mg J7517

Treatment-Treatment - Miscellaneous · category RX029N

5 suppliers43 claims6,060 services$0.19 avg. paid by Medicare

Pharmacy supply fee for oral anti-cancer, oral anti-emetic or immunosuppressive drug(s); for the first prescription in a 30-day period Q0511

Treatment-Chemotherapy · category RH012N

6 suppliers36 claims36 services$17.90 avg. paid by Medicare

Pharmacy supply fee for oral anti-cancer, oral anti-emetic or immunosuppressive drug(s); for a subsequent prescription in a 30-day period Q0512

Treatment-Chemotherapy · category RH012N

6 suppliers55 claims57 services$11.95 avg. paid by Medicare

Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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Other Providers at the Same Location NPPES 20

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

MS. MAUREEN IMELDA REESE PA

Physician Assistant

242 MERRICK RD
ROCKVILLE CENTRE, NY 11570

Nassau County (516) 536-7336

MANISH B UNDAVIA M.D.

Internal Medicine (Clinical Cardiac Electrophysiology)

242 MERRICK RD, SUITE 402
ROCKVILLE CENTRE, NY 11570

Nassau County (516) 763-2800

RICHARD HOROWITZ M.D.

Internal Medicine (Cardiovascular Disease)

242 MERRICK RD, SUITE 402
ROCKVILLE CENTRE, NY 11570

Nassau County (516) 763-2800

RICHARD M. LEE MD

Internal Medicine (Hematology & Oncology)

242 MERRICK RD, SUITE 301
ROCKVILLE CENTRE, NY 11570

Nassau County (516) 536-1455

VARVARA ALEXIADIS MD

Internal Medicine (Endocrinology, Diabetes & Metabolism)

242 MERRICK RD, STE 403
ROCKVILLE CENTRE, NY 11570

Nassau County (516) 536-3700

MARK A KESSLER M.D.

Internal Medicine (Cardiovascular Disease)

242 MERRICK RD, SUITE 402
ROCKVILLE CENTRE, NY 11570

Nassau County (516) 763-2800

DOUGLAS LAX DO

Internal Medicine (Nephrology)

242 MERRICK RD, SUITE 304
ROCKVILLE CENTRE, NY 11570

Nassau County (516) 764-7070

ALLERGY & ASTHMA CARE OF LI, PC

Allergy & Immunology

242 MERRICK RD, SUITE 401
ROCKVILLE CENTRE, NY 11570

Nassau County (516) 536-7336

STEPHEN COVEY M.D.

Internal Medicine (Cardiovascular Disease)

242 MERRICK RD, SUITE 402
ROCKVILLE CENTRE, NY 11570

Nassau County (516) 763-2800

JEROME B ZISFEIN M.D.

Internal Medicine (Cardiovascular Disease)

242 MERRICK RD, SUITE 402
ROCKVILLE CENTRE, NY 11570

Nassau County (516) 763-2800

VALERIE KREMER M.D.

Internal Medicine (Hematology & Oncology)

242 MERRICK RD, 301
ROCKVILLE CENTRE, NY 11570

Nassau County (516) 536-1455

DR. ARTHUR RUSOVICI MD

Internal Medicine (Interventional Cardiology)

242 MERRICK RD
ROCKVILLE CENTRE, NY 11570

Nassau County (917) 580-1732

USDK LLC

Clinic/Center (Ambulatory Surgical)

242 MERRICK RD
ROCKVILLE CENTRE, NY 11570

Nassau County (239) 541-9993

WINTHROP COMMUNITY MEDICAL AFFILIATES, P.C.

Internal Medicine (Cardiovascular Disease)

242 MERRICK RD, SUITE 402
ROCKVILLE CENTRE, NY 11570

Nassau County (516) 763-2800

HIMALI GANDHI MD

Internal Medicine (Cardiovascular Disease)

242 MERRICK RD
ROCKVILLE CENTRE, NY 11570

Nassau County (516) 763-2800

LAWRENCE MICHAEL KLEINMAN MD

Internal Medicine (Nephrology)

242 MERRICK RD, STE 304
ROCKVILLE CENTRE, NY 11570

Nassau County (516) 764-7070

MICKY CHUN MD

Internal Medicine (Nephrology)

242 MERRICK RD, SUITE 304
ROCKVILLE CENTRE, NY 11570

Nassau County (516) 764-7070

DR. YAEL LEHMAN OPPENHEIM M.D.

Internal Medicine (Endocrinology, Diabetes & Metabolism)

242 MERRICK RD, SUITE 403
ROCKVILLE CENTRE, NY 11570

Nassau County (516) 536-3700

IVAN K. ROTHMAN MD

Internal Medicine (Hematology & Oncology)

242 MERRICK RD, STE 301
ROCKVILLE CENTRE, NY 11570

Nassau County (516) 536-1455

NORMA LEE WENGER MD

Internal Medicine (Nephrology)

242 MERRICK RD, STE 304
ROCKVILLE CENTRE, NY 11570

Nassau County (516) 764-7070

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 John Ioannou's NPI number?

The NPI number for John Ioannou is 1851330328. It was assigned to this individual provider in the NPPES registry on June 6, 2006.

Where is John Ioannou located?

John Ioannou practices at 242 Merrick Rd Suite 304, Rockville Centre, NY 11570. The listed phone number is (516) 764-7070.

What is John Ioannou's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Nephrology, with taxonomy code 207RN0300X.

Is John Ioannou enrolled in Medicare?

Yes. John Ioannou 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 John Ioannou affiliated with any hospitals?

According to CMS data, John Ioannou is affiliated with Mount Sinai South Nassau, Mercy Medical Center and Chsli St Joseph Hospital.

When was this NPI record last updated?

The NPPES record for John Ioannou was last updated on October 30, 2009. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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.