DR. JOHN ROBERT DELFS M.D.
NPI 1144521709
Internal Medicine in Woodside, NY

NPI Status: Active since November 12, 2010

Contact Information

61-10 QUEENS BOULEVARD
2ND FLOOR
WOODSIDE, NY
ZIP 11377
Phone: (718) 397-2002
Fax: (646) 524-8323

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  • Individual
  • Male
  • Internal Medicine

About JOHN DELFS

This page provides the complete NPI Profile along with additional information for John Delfs, an internist established in Woodside, New York with a medical specialization in Internal Medicine. The healthcare provider is registered in the NPI registry with number 1144521709 assigned on November 2010. The practitioner's primary taxonomy code is 207R00000X with license number 252533 (NY). The provider is registered as an individual and his NPI record was last updated 8 years ago.

NPI
1144521709
Provider Name
DR. JOHN ROBERT DELFS M.D.
Gender
Male
Entity Type
Individual
Location Address
61-10 QUEENS BOULEVARD 2ND FLOOR WOODSIDE, NY 11377
Location Phone
(718) 397-2002
Location Fax
(646) 524-8323
Mailing Address
16 HEMLOCK PL NEW ROCHELLE, NY 10805
Mailing Phone
(917) 471-4812
Mailing Fax
(646) 524-8323
Is Sole Proprietor?
No
Enumeration Date
11-12-2010
Last Update Date
06-11-2018
Code Navigator

An internist like John Delfs 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

Taxonomy Code
207R00000X
Type
Allopathic & Osteopathic Physicians
License No.
252533
License State
NY
Taxonomy Description
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

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)
12084N0400XAllopathic & Osteopathic Physicians

Psychiatry & Neurology
Neurology

252533 (NY)

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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 1144521709, 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 51. The final step is to find the difference between that total and the next multiple of ten (60 - 51 = 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
1
Unchanged
Pos 3
4
Doubled → 8
Pos 4
4
Unchanged
Pos 5
5
Doubled → 10 → 1 + 0
Pos 6
2
Unchanged
Pos 7
1
Doubled → 2
Pos 8
7
Unchanged
Pos 9
0
Doubled → 0
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 4 → 8 5 → 10 → 1 1 → 2 0 → 0

Step 2: Add all digits plus the NPI constant

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

2 + 1 + 8 + 4 + 1 + 0 + 2 + 2 + 7 + 0 + 24 = 51

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

The next multiple of ten after 51 is 60. The difference is the calculated check digit.

60 - 51 = 9
This NPI is valid
The calculated check digit is 9, which matches the last digit of 1144521709.

Other Providers at the Same Location


The following 1 provider is registered at the same or a nearby location.

Internal Medicine
61-10 QUEENS BOULEVARD, 2ND FLOOR
WOODSIDE, NY 11377

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1144521709, enumerated as an "individual" on November 12, 2010.

The provider is located at 61-10 QUEENS BOULEVARD 2ND FLOOR WOODSIDE, NY 11377 and the phone number is (718) 397-2002.

Internal Medicine with taxonomy code 207R00000X.