MARC RYBSTEIN M.D.
NPI 1538393822
Internal Medicine - Cardiovascular Disease in Brooklyn, NY

NPI Status: Active since May 14, 2009

Contact Information

828 UTICA AVE
BROOKLYN, NY
ZIP 11203
Phone: (718) 303-0851

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  • Individual
  • Male
  • Years of Experience 21
  • Internal Medicine
  • Cardiovascular Disease
  • Accepts Medicare Approved Payment
  • PECOS Enrolled
  • Medicare Quality Reporting

About MARC RYBSTEIN

This page provides the complete NPI Profile along with additional information for Marc Rybstein, an internist established in Brooklyn, New York with a medical specialization in Internal Medicine, focusing in cardiovascular disease and more than 21 years of experience. He graduated from State University Of New York At Stony Brook, School Of Medicine in 2006. The healthcare provider is registered in the NPI registry with number 1538393822 assigned on May 2009. The practitioner's primary taxonomy code is 207RC0000X with license number 253288 (NY). The provider is registered as an individual and his NPI record was last updated February 2026.

NPI
1538393822
Provider Name
MARC RYBSTEIN M.D.
Gender
Male
Entity Type
Individual
Location Address
828 UTICA AVE BROOKLYN, NY 11203
Location Phone
(718) 303-0851
Mailing Address
545 E JERICHO TPKE HUNTINGTON STATION, NY 11746
Mailing Phone
(718) 303-0851
Medical School Name
STATE UNIVERSITY OF NEW YORK AT STONY BROOK, SCHOOL OF MEDICINE
Graduation Year
2006
Is Sole Proprietor?
Yes
Enumeration Date
05-14-2009
Last Update Date
02-12-2026
Code Navigator

An internist like Marc Rybstein is a physician who has completed an internal medicine residency and is board-certified or board-eligible in an internist specialty. Internists are trained to care for adults of all ages for many different medical conditions. An internist typically monitors chronic physical conditions, identifies acute diseases, provides family planning, provides counseling about wellness and disease prevention, etc.

Location Map

Secondary Locations

  • 447 Fenimore Street
    Brooklyn, NY 11225
    (718) 303-0851

Specialty - Primary Taxonomy

The NPI enumerator requires providers to submit at least one taxonomy code. A taxonomy code is a unique 10-character code that describes the healthcare provider type, classification, and the area of specialization. There could be only one primary taxonomy code per NPI record. For individual NPIs the license data is associated to the taxonomy code.

Classification

Internal Medicine Cardiovascular Disease

Taxonomy Code
207RC0000X
Type
Allopathic & Osteopathic Physicians
License No.
253288
License State
NY
Taxonomy Description
An internist who specializes in diseases of the heart and blood vessels and manages complex cardiac conditions such as heart attacks and life-threatening, abnormal heartbeat rhythms.

Medicare Participation & PECOS Enrollment Status

Marc Rybstein is registered with Medicare and accepts claims assignment, this means the provider accepts the approved amount for the cost of rendered services as full payment. Participating providers may not charge beneficiaries more than the approved amount for their services. Please keep in mind that beneficiaries still have to pay a coinsurance or copayment amount for a visit or service.

Marc Rybstein is enrolled in PECOS and is eligible to order or refer health care services for Medicare patients. The provider is eligible to order or refer: Part B Clinical Laboratory and Imaging, Durable Medical Equipment (DME), a Home Health Agency (HHA) and Power Mobility Devices.

What is PECOS?
PECOS is the online Medicare enrollment management system or Provider, Enrollment, Chain and Ownership System. The PECOS system is a database of providers who have registered with CMS as providers or suppliers. PECOS is the primary source of information about verified Medicare professionals. Providers that want to participate in this program need to enroll in PECOS with their NPI number to avoid denied claims.

  • Is the provider registered in PECOS? Yes

  • PECOS PAC ID: 4082768775

    What is the PECOS Associate Control ID?
    A PAC ID is a unique 10-digit number assigned to an individual or organization healthcare provider in PECOS. The PAC ID is used to link together all the provider information, like tax identification numbers and organizational names. A PAC ID can be connected to multiple Enrollment IDs if an individual or organization has enrolled in PECOS more than once.

  • PECOS Enrollment ID: I20090819000150

    What is the Provider Enrollment ID?
    The Enrollment ID is a unique alphanumeric 15-digit code assigned to each new provider's PECOS enrollment application. The Enrollment ID is used to link together all the provider enrollment information like enrollment type, state, provider specialty, and reassignment of benefits.

  • Accepts Medicare Assignment? Yes

    What does it mean "accepts medicare assignment"?
    When a provider accepts Medicare assignment, the provider agrees to be paid directly by Medicare and to accept the payment amount approved by Medicare. Additionally, the provider agrees to not bill patients for more than the Medicare deductible and coinsurance amounts.
    A provider who doesn't accept assignment may charge you up to 15% over the Medicare-approved amount. This is known as the limiting charge. You may have to pay this amount, or it may be covered by another insurer.

  • Eligible to Order or Refer Part B Clinical Laboratory and Imaging: Yes

  • Eligible to Order or Refer Durable Medical Equipment (DMEPOS): Yes

  • Eligible to Order or Refer a Home Health Agency (HHA): Yes

  • Eligible to Order or Refer Power Mobility Devices: Yes

Areas of Expertise

The following services and procedures, recently provided to Medicare patients, illustrate the range of care this provider offers. This list reflects the variety of services available to all patients visiting the practice and is based on 2022 Medicare dataset. In general, the more frequently a provider treats specific conditions or performs particular procedures, the more experienced they become in addressing similar patient needs. The provider has delivered many of the services listed below to Medicare patients. Please note that this list does not include services provided to patients who are not covered by Medicare.

Blood test, comprehensive group of blood chemicals

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.

This service was performed 43 times for 36 patients

Blood test, lipids (cholesterol and triglycerides)

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.

This service was performed 42 times for 36 patients

Blood test, thyroid stimulating hormone (tsh)

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.

This service was performed 41 times for 35 patients

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

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.

This service was performed 42 times for 36 patients

Complete ultrasound of abdomen and pelvis artery and vein blood flow

This procedure uses sound waves to create images of your abdomen and pelvis, specifically focusing on the arteries and veins. It helps in assessing the blood flow and detecting any abnormalities, ensuring your overall well-being.

This service was performed 83 times for 82 patients

Complete ultrasound of aorta, vena cava, groin vessels or bypass grafts

This procedure involves using sound waves to create images of your aorta, vena cava, groin vessels, or bypass grafts. It helps to detect abnormalities or blockages, ensuring your blood flows smoothly. It's painless and non-invasive.

This service was performed 13 times for 13 patients

Complete ultrasound of within the brain blood flow

A complete ultrasound of brain blood flow, also known as a Transcranial Doppler, is a non-invasive procedure that uses sound waves to measure the speed and direction of blood flow in the brain. This helps detect any abnormalities or blockages.

This service was performed 44 times for 43 patients

Cyanocobalamin (vitamin b-12) level

A Cyanocobalamin (Vitamin B-12) level test is a blood test that checks the amount of Vitamin B-12 in your body. This vitamin is vital for nerve function and the creation of red blood cells. Low or high levels could indicate a potential health issue.

This service was performed 41 times for 35 patients

Dehydroepiandrosterone (dhea-s) hormone level

The Dehydroepiandrosterone (DHEA-S) hormone level test is a blood test that checks the amount of a natural steroid hormone in your body. This hormone helps in managing stress and maintaining overall health. Any imbalance can lead to various health issues.

This service was performed 18 times for 18 patients

Electrocardiogram (ecg) up to 30 days continuous with review and report by health care professional

An Electrocardiogram (ECG) is a non-invasive test that records the electrical signals in your heart. For up to 30 days, a small device will continuously monitor your heart's activity. A healthcare professional will then review the data and provide a report on your heart's function.

This service was performed 56 times for 56 patients

Electrocardiogram (ecg) up to 30 days continuous with transmission of patient triggered events with review and report by health care professional

An Electrocardiogram (ECG) is a test that records your heart's electrical activity for up to 30 days. You trigger a transmission if you feel symptoms, which is then reviewed by a healthcare professional. The report helps diagnose heart conditions.

This service was performed 55 times for 55 patients

Established patient office or other outpatient visit, 10-19 minutes

This is a routine check-up for patients who have previously seen the doctor. During this 10-19 minute visit, the doctor will review your health status, discuss any concerns, and manage ongoing treatments or medications. It's a chance to ensure your health is on track.

This service was performed 38 times for 26 patients

Established patient office or other outpatient visit, 20-29 minutes

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.

This service was performed 71 times for 36 patients

Established patient office or other outpatient visit, 30-39 minutes

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.

This service was performed 461 times for 179 patients

Established patient office or other outpatient visit, 40-54 minutes

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.

This service was performed 23 times for 22 patients

Exercise or drug-induced heart stress test with electrocardiogram (ecg) with supervision and review by physician

An exercise or drug-induced heart stress test with ECG is a procedure performed by a doctor to assess how your heart responds to exertion. It involves monitoring your heart's electrical activity while you exercise or after medication is given to mimic exercise effects.

This service was performed 95 times for 95 patients

Ferritin (blood protein) level

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.

This service was performed 42 times for 36 patients

Folic acid level, serum

A Folic Acid Level, Serum test measures the amount of folic acid, a type of B vitamin, in your blood. This vitamin is important for cell growth and development. It's crucial for your body to function well. If your levels are low, it may indicate a deficiency, which can lead to health issues.

This service was performed 41 times for 35 patients

Gonadotropin, follicle stimulating (reproductive hormone) level

This is a test that measures the level of a hormone in your body known as follicle stimulating hormone (FSH). FSH plays a key role in the body's reproductive processes. It's important for growth and the healthy functioning of the body.

This service was performed 14 times for 14 patients

Gonadotropin, luteinizing (reproductive hormone) level

This is a blood test that measures the level of luteinizing hormone (LH). LH plays a key role in body growth and development. It's important for the proper functioning of certain glands. Irregular levels can indicate potential health issues.

This service was performed 14 times for 14 patients

Hemoglobin a1c level

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.

This service was performed 42 times for 36 patients

Injection, regadenoson, 0.1 mg

Regadenoson injection, 0.1 mg, is a medication used to help visualize the heart during a stress test. It works by increasing blood flow in the arteries of the heart. It's injected into a vein and is generally well-tolerated.

This service was performed 365 times for 92 patients

Insertion of needle into vein for collection of blood sample

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.

This service was performed 63 times for 43 patients

Iron binding capacity

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.

This service was performed 41 times for 35 patients

Iron level

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.

This service was performed 41 times for 35 patients

Ldl cholesterol level

The LDL cholesterol level is a test that measures the amount of low-density lipoprotein (LDL) in your blood. LDL is often referred to as 'bad cholesterol' because high levels can lead to heart disease. Regular testing helps monitor and manage your heart health.

This service was performed 39 times for 33 patients

Magnesium level

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.

This service was performed 43 times for 36 patients

Measurement c-reactive protein for detection of infection or inflammation, high sensitivity

The high sensitivity C-reactive protein test is a blood test that helps detect low levels of inflammation in the body. It's often used to assess the risk of heart disease but can also indicate infection or other inflammatory conditions.

This service was performed 42 times for 36 patients

Measurement of total estradiol (hormone)

Total estradiol measurement is a simple blood test that examines the level of a key hormone in your body. This hormone plays a vital role in many body functions. The test helps understand if hormone levels are balanced, which can impact overall health.

This service was performed 30 times for 28 patients

New patient office or other outpatient visit, 45-59 minutes

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.

This service was performed 16 times for 16 patients

Nuclear medicine studies of heart muscle at rest and with stress and spect

Nuclear medicine studies of the heart involve two parts: rest and stress. During rest, images are taken of your heart at ease. During stress, images are taken after exercise or medication-induced stress. SPECT is a special imaging technique providing 3D pictures of your heart, helping identify any issues.

This service was performed 79 times for 79 patients

Parathormone (parathyroid hormone) level

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.

This service was performed 21 times for 20 patients

Phosphate level

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.

This service was performed 43 times for 36 patients

Progesterone (reproductive hormone) level

A progesterone level test measures the amount of progesterone, a hormone, in your body. It plays a key role in preparing the body for pregnancy and maintaining it. The test can help assess overall hormonal health and aid in diagnosing certain conditions.

This service was performed 14 times for 14 patients

Prolactin (milk producing hormone) level

A prolactin level test measures the amount of a hormone, prolactin, in your blood. This hormone plays a role in many bodily functions, such as the creation of milk. High or low levels can indicate certain health conditions. The test involves a simple blood draw.

This service was performed 14 times for 14 patients

Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report

An electrocardiogram (ECG) is a non-invasive test that records your heart's electrical activity. Using 12 leads attached to your body, it captures data to help identify heart conditions. A doctor interprets the results and provides a report.

This service was performed 174 times for 121 patients

Sex hormone binding globulin (protein) level

Sex hormone binding globulin (SHBG) level is a blood test that measures a specific protein in your body. This protein helps regulate certain hormones. If these hormone levels are too high or too low, it may cause health issues. The test helps assess hormone-related conditions.

This service was performed 17 times for 16 patients

Smoking and tobacco use intensive counseling, 4-10 minutes

This service provides brief, intensive counseling (4-10 minutes) to support you in quitting smoking or tobacco use. It involves discussing the risks of tobacco use, benefits of quitting, and strategies to help you stop. It's a critical step towards a healthier lifestyle.

This service was performed 26 times for 15 patients

Technetium tc-99m sestamibi, diagnostic, per study dose

Technetium Tc-99m Sestamibi is a diagnostic test used to create images of your heart or breast tissues. It involves a safe radioactive substance injection that helps doctors to detect any abnormalities or changes in these tissues.

This service was performed 184 times for 92 patients

Testing of autonomic (sympathetic) nervous system function

Testing of autonomic nervous system function assesses how well your body's automatic processes, like heart rate and blood pressure, are working. It involves various non-invasive tests like heart rate variability and sweat production tests.

This service was performed 25 times for 20 patients

Testing of autonomic nervous system function and heart rate response to deep breathing

This test studies the autonomic nervous system, which controls body functions like heart rate. During the test, you'll breathe deeply while the heart rate is monitored. This helps identify any irregularities in the heart's response to breathing changes.

This service was performed 25 times for 20 patients

Testosterone (hormone) level, total

A total testosterone level test measures the amount of a key hormone in your body. This hormone influences various body functions such as muscle mass, energy levels, and mood. The test involves a simple blood draw, and results help monitor health conditions.

This service was performed 17 times for 16 patients

Thyroid hormone, t3 measurement, total

The T3 Total Test measures the amount of thyroid hormone T3 in your blood. This hormone, produced by the thyroid gland, is crucial for body's metabolism and energy production. Abnormal levels may indicate a thyroid disorder.

This service was performed 41 times for 35 patients

Thyroxine (thyroid chemical), free

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.

This service was performed 41 times for 35 patients

Ultrasound of both sides of head and neck blood flow

An ultrasound of the head and neck blood flow is a safe, non-invasive procedure that uses sound waves to create images of blood vessels. It helps detect abnormalities like blockages or clots, ensuring optimal blood flow.

This service was performed 129 times for 128 patients

Ultrasound of heart with color-depicted blood flow, rate, direction and valve function

This is a heart ultrasound, also known as an echocardiogram. It uses sound waves to create pictures of your heart, showing how blood flows through it. The color depicts the blood flow's speed and direction. It also checks the heart's valves to ensure they're working properly.

This service was performed 177 times for 171 patients

Ultrasound of leg arteries or artery grafts

An ultrasound of leg arteries or artery grafts is a non-invasive imaging test. It uses high-frequency sound waves to capture live images from inside your body, specifically your leg arteries or grafts. This helps in detecting any blockages or abnormalities.

This service was performed 101 times for 100 patients

Ultrasound of within the brain blood flow following medication

An ultrasound of the brain's blood flow after medication is a non-invasive procedure that uses sound waves to create images of the blood flow within your brain. This helps monitor how the medication is affecting your brain's blood circulation.

This service was performed 26 times for 26 patients

Ultrasound of within the brain blood flow for blood clots

An ultrasound of the brain's blood flow is a safe, non-invasive procedure that uses sound waves to create images of the blood vessels. This helps identify any blockages, like blood clots, that might disrupt normal blood flow and cause health issues.

This service was performed 26 times for 26 patients

Ultrasound study of arm and leg arteries

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.

This service was performed 31 times for 26 patients

Ultrasound study of arm or leg veins with compression and maneuvers

An ultrasound study of arm or leg veins with compression and maneuvers is a non-invasive procedure that uses sound waves to create images of your veins. This helps identify blood clots or other vein problems. During the procedure, pressure is applied to the veins and certain movements are performed to assess blood flow.

This service was performed 23 times for 23 patients

Uric acid level, blood

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.

This service was performed 43 times for 36 patients

Vitamin d-3 level

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.

This service was performed 34 times for 30 patients

Physician Visit Costs



The typical physician office visit costs for Medicare beneficiaries in this area are: $38.57 for a new patient copayment and $20.86 for an established patient copayment.

The pricing information below displays the copayment minimum, maximum and average amount that patients under Medicare are charged when visiting this provider as a new or established patient. Please keep in mind that these prices are just for reference purposes, and the actual prices charged by the provider might be different.

For patients covered under private health plans the prices below are also useful as healthcare pricing for private insurance is usually established as a function of Medicare prices. Private insurance covered patients should check their individual plans to determine the exact pricing.

The prices below reflect the costs for new and established patients in the 11203 ZIP code area.

New Patients Visit Costs *

The most utilized procedure code for new patients office visits is 99204

  • Average New Patient Price $154.28
  • Minimum New Patient Price $67.4
  • Maximum New Patient Price $203.53
  • Average New Patient Copayment $38.57
  • Minimum New Patient Copayment $16.85
  • Maximum New Patient Copayment $50.88

Established Patients Visit Costs *

The most utilized procedure code for established patients office visits is 99213

  • Average Established Patient Price $83.44
  • Minimum Established Patient Price $21.66
  • Maximum Established Patient Price $164.45
  • Average Established Patient Copayment $20.86
  • Minimum Established Patient Copayment $5.41
  • Maximum Established Patient Copayment $41.11

* The physician office visit costs information is generated by statistical analysis of similar providers in the same geographical area. The pricing information above IS NOT the amount charged by this provider.

Quality Reporting

The provider participated in CMS Quality Payment Program. The Quality Payment Program aims to improve population health, reduce costs and improve the care received by Medicare beneficiaries. The following quality measures meet Medicare's statistical reporting standards. Not all providers report the same information, because not all providers give the same services to patients. The quality information is just a snapshot of some the care providers give to their patients. Reporting more or less information is not a reflection of quality.

Quality Measure Performance Number of Patients
Documentation of Current Medications in the Medical Record 28% 8382
Percentage of visits for patients aged 18 years and older for which the eligible professional or eligible clinician attests to documenting a list of current medications using all immediate resources available on the date of the encounter. This list must include ALL known prescriptions, over-the-counters, herbals, and vitamin/mineral/dietary (nutritional) supplements AND must contain the medications' name, dosage, frequency and route of administration
Patient-Specific Education 29% 299
The MIPS eligible clinician must use clinically relevant information from certified EHR technology to identify patient-specific educational resources and provide electronic access to those materials to at least one unique patient seen by the MIPS eligible clinician.
Preventive Care and Screening: Body Mass Index (BMI) Screening and Follow-Up Plan 85% 1282
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 twelve months of the current encounter Normal Parameters: Age 18 years and older BMI >= 18.5 and < 25 kg/m2
Preventive Care and Screening: Tobacco Use: Screening and Cessation Intervention 6% 1280
Percentage of patients aged 18 years and older who were screened for tobacco use one or more times within 24 months AND who received tobacco cessation intervention if identified as a tobacco user
Provide Patient Access 45% 299
For at least one unique patient seen by the MIPS eligible clinician: (1) The patient (or the patient authorized representative) is provided timely access to view online, download, and transmit his or her health information; and (2) The MIPS eligible clinician ensures the patient's health information is available for the patient (or patient-authorized representative) to access using any application of their choice that is configured to meet the technical specifications of the Application Programing Interface (API) in the MIPS eligible clinician's certified EHR technology.
Security Risk AnalysisYesN/A
Conduct or review a security risk analysis in accordance with the requirements in 45 CFR 164.308(a)(1), including addressing the security (to include encryption) of ePHI data created or maintained by certified EHR technology in accordance with requirements in 45 CFR164.312(a)(2)(iv) and 45 CFR 164.306(d)(3), and implement security updates as necessary and correct identified security deficiencies as part of the MIPS eligible clinician's risk management process.

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NPI NPI Number Validation

How NPI Validation Works

The NPI validation process uses the ISO-standard Luhn algorithm, a mathematical "handshake", to ensure that a provider's 10-digit ID is authentic and free of common typing errors.

To verify the NPI 1538393822, we treat the final digit (2) as the Check Digit—the target answer we need to reach. The process begins by taking the first nine digits and adding a constant value of 24, which accounts for the "80840" prefix required for all U.S. health identifiers. We then double every other digit starting from the right and sum the individual digits of those results together. For this specific NPI, that total comes to 78. The final step is to find the difference between that total and the next multiple of ten (80 - 78 = 2).

Digit-by-digit view

Use the first nine digits for the calculation. Starting from the right, double every other digit. The last digit is the check digit and is not part of the calculation.

Pos 1
1
Doubled → 2
Pos 2
5
Unchanged
Pos 3
3
Doubled → 6
Pos 4
8
Unchanged
Pos 5
3
Doubled → 6
Pos 6
9
Unchanged
Pos 7
3
Doubled → 6
Pos 8
8
Unchanged
Pos 9
2
Doubled → 4
Check
2
Target digit
Regular digit Doubled digit Check digit

Step 1: Double every other digit from the right

Starting with the rightmost digit of the first nine digits, double every other value. If doubling creates a two-digit number, add those digits together.

1 → 2 3 → 6 3 → 6 3 → 6 2 → 4

Step 2: Add all digits plus the NPI constant

Add the transformed values, the unchanged digits, and the constant 24.

2 + 5 + 6 + 8 + 6 + 9 + 6 + 8 + 4 + 24 = 78

Step 3: Find the amount needed to reach the next multiple of 10

The next multiple of ten after 78 is 80. The difference is the calculated check digit.

80 - 78 = 2
This NPI is valid
The calculated check digit is 2, which matches the last digit of 1538393822.

Other Providers at the Same Location


The following 2 providers are registered at the same or a nearby location.

Physician Assistant (Medical)
828 UTICA AVE
BROOKLYN, NY 11203
Internal Medicine (Cardiovascular Disease)
828 UTICA AVE
BROOKLYN, NY 11203

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1538393822, enumerated as an "individual" on May 14, 2009.

The provider is located at 828 UTICA AVE BROOKLYN, NY 11203 and the phone number is (718) 303-0851.

Internal Medicine with taxonomy code 207RC0000X and a focus in Cardiovascular Disease.