DR. IRA REZAK M.D.
NPI 1639144082
Internal Medicine - Pulmonary Disease in Northport, NY

NPI Status: Active since February 21, 2006

Contact Information

79 MIDDLEVILLE RD
NORTHPORT, NY
ZIP 11768
Phone: (631) 261-4400

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  • Individual
  • Male
  • Internal Medicine
  • Pulmonary Disease

About IRA REZAK

This page provides the complete NPI Profile along with additional information for Ira Rezak, an internist established in Northport, New York with a medical specialization in Internal Medicine, focusing in pulmonary disease . The healthcare provider is registered in the NPI registry with number 1639144082 assigned on February 2006. The practitioner's primary taxonomy code is 207RP1001X with license number 92715 (NY). The provider is registered as an individual and his NPI record was last updated 19 years ago.

NPI
1639144082
Provider Name
DR. IRA REZAK M.D.
Gender
Male
Entity Type
Individual
Location Address
79 MIDDLEVILLE RD NORTHPORT, NY 11768
Location Phone
(631) 261-4400
Mailing Address
PO BOX 660 STONY BROOK, NY 11790
Mailing Phone
(631) 689-8574
Is Sole Proprietor?
No
Enumeration Date
02-21-2006
Last Update Date
07-08-2007
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An internist like Ira Rezak 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

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 Pulmonary Disease

Taxonomy Code
207RP1001X
Type
Allopathic & Osteopathic Physicians
License No.
92715
License State
NY
Taxonomy Description
An internist who treats diseases of the lungs and airways. The pulmonologist diagnoses and treats cancer, pneumonia, pleurisy, asthma, occupational and environmental diseases, bronchitis, sleep disorders, emphysema and other complex disorders of the lungs.

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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 1639144082, 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 68. The final step is to find the difference between that total and the next multiple of ten (70 - 68 = 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
6
Unchanged
Pos 3
3
Doubled → 6
Pos 4
9
Unchanged
Pos 5
1
Doubled → 2
Pos 6
4
Unchanged
Pos 7
4
Doubled → 8
Pos 8
0
Unchanged
Pos 9
8
Doubled → 16 → 1 + 6
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 1 → 2 4 → 8 8 → 16 → 7

Step 2: Add all digits plus the NPI constant

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

2 + 6 + 6 + 9 + 2 + 4 + 8 + 0 + 1 + 6 + 24 = 68

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

The next multiple of ten after 68 is 70. The difference is the calculated check digit.

70 - 68 = 2
This NPI is valid
The calculated check digit is 2, which matches the last digit of 1639144082.

Other Providers at the Same Location


The following 20 providers are registered at the same or a nearby location.

Psychologist (Clinical)
79 MIDDLEVILLE RD, VA MEDICAL CENTER, PSYCHOLOGY SERVICE (116B)
NORTHPORT, NY 11768
Internal Medicine (Geriatric Medicine)
79 MIDDLEVILLE RD, NORTHPORT VAMC
NORTHPORT, NY 11768
Internal Medicine (Hematology & Oncology)
79 MIDDLEVILLE RD, 111-S
NORTHPORT, NY 11768
Nurse Practitioner (Adult Health)
79 MIDDLEVILLE RD
NORTHPORT, NY 11768
Nurse Practitioner
79 MIDDLEVILLE RD, HEM/ONC DEPART BLDG 200
NORTHPORT, NY 11768
Internal Medicine (Nephrology)
79 MIDDLEVILLE RD
NORTHPORT, NY 11768
Internal Medicine
79 MIDDLEVILLE RD, VA MEDICAL CENTER
NORTHPORT, NY 11768
Dentist (General Practice)
79 MIDDLEVILLE RD, VAMC MEDICAL CENTER, DENTAL SERVICE (160)
NORTHPORT, NY 11768
Internal Medicine
79 MIDDLEVILLE RD
NORTHPORT, NY 11768
Speech-Language Pathologist
79 MIDDLEVILLE RD, NORTHPORT VAMC ASPS-126
NORTHPORT, NY 11768
Audiologist
79 MIDDLEVILLE RD, ASPS#126
NORTHPORT, NY 11768
Audiologist-Hearing Aid Fitter
79 MIDDLEVILLE RD, 126
NORTHPORT, NY 11768
Physician Assistant (Medical)
79 MIDDLEVILLE RD, NORTHPORT VA MEDICAL CENTER
NORTHPORT, NY 11768
Pharmacist (Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist)
79 MIDDLEVILLE RD
NORTHPORT, NY 11768
Physician Assistant (Medical)
79 MIDDLEVILLE RD, NORTHPORT VA MEDICAL CENTER
NORTHPORT, NY 11768
Nurse Practitioner (Adult Health)
79 MIDDLEVILLE RD
NORTHPORT, NY 11768
Pharmacist (Pharmacotherapy)
79 MIDDLEVILLE RD
NORTHPORT, NY 11768
Nurse Practitioner (Psychiatric/Mental Health)
79 MIDDLEVILLE RD, 116A
NORTHPORT, NY 11768
Internal Medicine
79 MIDDLEVILLE RD, NORTHPORT VAMC
NORTHPORT, NY 11768
Pharmacist (Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist)
79 MIDDLEVILLE RD
NORTHPORT, NY 11768

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1639144082, enumerated as an "individual" on February 21, 2006.

The provider is located at 79 MIDDLEVILLE RD NORTHPORT, NY 11768 and the phone number is (631) 261-4400.

Internal Medicine with taxonomy code 207RP1001X and a focus in Pulmonary Disease.