JOHN N EASAW M.D
NPI 1235166919
Internal Medicine - Endocrinology, Diabetes & Metabolism in New York, NY

NPI Status: Active since June 27, 2006

Contact Information

423 E 23RD ST
NEW YORK, NY
ZIP 10010
Phone: (212) 686-7500

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  • Individual
  • Male
  • Internal Medicine
  • Endocrinology, Diabetes & Metabolism

About JOHN EASAW

This page provides the complete NPI Profile along with additional information for John Easaw, an internist established in New York, New York with a medical specialization in Internal Medicine, focusing in endocrinology, diabetes & metabolism . The healthcare provider is registered in the NPI registry with number 1235166919 assigned on June 2006. The practitioner's primary taxonomy code is 207RE0101X with license number 183536 (NY). The provider is registered as an individual and his NPI record was last updated 19 years ago.

NPI
1235166919
Provider Name
JOHN N EASAW M.D
Gender
Male
Entity Type
Individual
Location Address
423 E 23RD ST NEW YORK, NY 10010
Location Phone
(212) 686-7500
Mailing Address
423 E 23RD ST NEW YORK, NY 10010
Mailing Phone
(212) 686-7500
Is Sole Proprietor?
No
Enumeration Date
06-27-2006
Last Update Date
07-17-2007
Code Navigator

An internist like John Easaw 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 Endocrinology, Diabetes & Metabolism

Taxonomy Code
207RE0101X
Type
Allopathic & Osteopathic Physicians
License No.
183536
License State
NY
Taxonomy Description
An internist who concentrates on disorders of the internal (endocrine) glands such as the thyroid and adrenal glands. This specialist also deals with disorders such as diabetes, metabolic and nutritional disorders, obesity, pituitary diseases and menstrual and sexual problems.

Secondary Taxonomies

The provider has reported to the NPI enumerator additional taxonomy codes. Multiple taxonomy codes may represent subspecialties or other areas of specialization the provider maybe licensed to practice.

No. Taxonomy Code Type Classification /
Specialization
License No. (State)
1207RE0101XAllopathic & Osteopathic Physicians

Internal Medicine
Endocrinology, Diabetes & Metabolism

A46556 (CA)

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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 1235166919, we treat the final digit (9) 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 61. The final step is to find the difference between that total and the next multiple of ten (70 - 61 = 9).

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
2
Unchanged
Pos 3
3
Doubled → 6
Pos 4
5
Unchanged
Pos 5
1
Doubled → 2
Pos 6
6
Unchanged
Pos 7
6
Doubled → 12 → 1 + 2
Pos 8
9
Unchanged
Pos 9
1
Doubled → 2
Check
9
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 6 → 12 → 3 1 → 2

Step 2: Add all digits plus the NPI constant

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

2 + 2 + 6 + 5 + 2 + 6 + 1 + 2 + 9 + 2 + 24 = 61

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

The next multiple of ten after 61 is 70. The difference is the calculated check digit.

70 - 61 = 9
This NPI is valid
The calculated check digit is 9, which matches the last digit of 1235166919.

Other Providers at the Same Location


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

Psychiatry & Neurology (Psychiatry)
423 E 23RD ST
NEW YORK, NY 10010
Internal Medicine (Gastroenterology)
423 E 23RD ST, NEW YORK VA HOSPITAL
NEW YORK, NY 10010
Emergency Medicine (Emergency Medical Services)
423 E 23RD ST
NEW YORK, NY 10010
Anesthesiology
423 E 23RD ST
NEW YORK, NY 10010
Internal Medicine (Infectious Disease)
423 E 23RD ST
NEW YORK, NY 10010
Pharmacist
423 E 23RD ST
NEW YORK, NY 10010
Nurse Practitioner (Gerontology)
423 E 23RD ST
NEW YORK, NY 10010
Internal Medicine (Gastroenterology)
423 E 23RD ST
NEW YORK, NY 10010
Psychiatry & Neurology (Neurology)
423 E 23RD ST
NEW YORK, NY 10010
Psychiatry & Neurology (Neurology)
423 E 23RD ST
NEW YORK, NY 10010
Physical Therapist
423 E 23RD ST
NEW YORK, NY 10010
Psychiatry & Neurology (Neurology)
423 E 23RD ST
NEW YORK, NY 10010
Occupational Therapist
423 E 23RD ST
NEW YORK, NY 10010
Occupational Therapist
423 E 23RD ST
NEW YORK, NY 10010
Occupational Therapist
423 E 23RD ST
NEW YORK, NY 10010
Nurse Anesthetist, Certified Registered
423 E 23RD ST
NEW YORK, NY 10010
Physical Therapist
423 E 23RD ST
NEW YORK, NY 10010
Nurse Practitioner (Adult Health)
423 E 23RD ST
NEW YORK, NY 10010
Occupational Therapist
423 E 23RD ST
NEW YORK, NY 10010
Internal Medicine
423 E 23RD ST
NEW YORK, NY 10010

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1235166919, enumerated as an "individual" on June 27, 2006.

The provider is located at 423 E 23RD ST NEW YORK, NY 10010 and the phone number is (212) 686-7500.

Internal Medicine with taxonomy code 207RE0101X and a focus in Endocrinology, Diabetes & Metabolism.