STEPHEN HONGACH DO
NPI 1891435186
Emergency Medicine - Sports Medicine in Brooklyn, NY

NPI Status: Active since April 01, 2022

Contact Information

450 CLARKSON AVE
BROOKLYN, NY
ZIP 11203
Phone: (718) 221-5148

NPI Profile Information
Primary Taxonomy
NPI Validation
Other Providers Same Location
Frequently Asked Questions

Individual
Male
Emergency Medicine
Sports Medicine

About STEPHEN HONGACH

This page provides the complete NPI Profile along with additional information for Stephen Hongach, a provider established in Brooklyn, New York with a medical specialization in Emergency Medicine, focusing in sports medicine . The healthcare provider is registered in the NPI registry with number 1891435186 assigned on April 2022. The practitioner's primary taxonomy code is 207PS0010X with license number 335323-01 (NY). The provider is registered as an individual and his NPI record was last updated one year ago.

NPI: 1891435186
Provider Name: STEPHEN HONGACH DO
Gender: Male
Entity Type: Individual
Location Address: 450 CLARKSON AVE BROOKLYN, NY 11203
Location Phone: (718) 221-5148
Mailing Address: 450 CLARKSON AVE BROOKLYN, NY 11203
Mailing Phone: (718) 221-5148
Is Sole Proprietor?: No
Enumeration Date: 04-01-2022
Last Update Date: 07-15-2025
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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: Emergency Medicine Sports Medicine
Taxonomy Code: 207PS0010X
Type: Allopathic & Osteopathic Physicians
License No.: 335323-01
License State: NY
Taxonomy Description: An emergency physician with special knowledge in sports medicine is responsible for continuous care in the field of sports medicine, not only for the enhancement of health and fitness, but also for the prevention and management of injury and illness. A sports medicine physician has knowledge and experience in the promotion of wellness and the role of exercise in promoting a healthy lifestyle. Knowledge of exercise physiology, biomechanics, nutrition, psychology, physical rehabilitation and epidemiology is essential to the practice of sports medicine.

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 1891435186, we treat the final digit (6) 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 64. The final step is to find the difference between that total and the next multiple of ten (70 - 64 = 6).

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

Doubled → 2

Pos 2

Unchanged

Pos 3

Doubled → 18 → 1 + 8

Pos 4

Unchanged

Pos 5

Doubled → 8

Pos 6

Unchanged

Pos 7

Doubled → 10 → 1 + 0

Pos 8

Unchanged

Pos 9

Doubled → 16 → 1 + 6

Check

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 9 → 18 → 9 4 → 8 5 → 10 → 1 8 → 16 → 7

Step 2: Add all digits plus the NPI constant

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

2 + 8 + 1 + 8 + 1 + 8 + 3 + 1 + 0 + 1 + 1 + 6 + 24 = 64

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

The next multiple of ten after 64 is 70. The difference is the calculated check digit.

70 - 64 = 6

This NPI is valid

The calculated check digit is 6, which matches the last digit of 1891435186.