DR. JOHN GEORGE KOSTOHRYZ DDS
NPI 1902919541
Dentist - Endodontics in Dallas, TX

NPI Status: Active since August 17, 2006

Contact Information

8201 PRESTON RD
SUITE 375
DALLAS, TX
ZIP 75225
Phone: (214) 361-6669
Fax: (214) 361-1847

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  • Individual
  • Male
  • Dentist
  • Endodontics

About JOHN KOSTOHRYZ

This page provides the complete NPI Profile along with additional information for John Kostohryz, a provider established in Dallas, Texas with a medical specialization in Dentist, focusing in endodontics . The healthcare provider is registered in the NPI registry with number 1902919541 assigned on August 2006. The practitioner's primary taxonomy code is 1223E0200X with license number 10970 (TX). The provider is registered as an individual and his NPI record was last updated 19 years ago.

NPI
1902919541
Provider Name
DR. JOHN GEORGE KOSTOHRYZ DDS
Gender
Male
Entity Type
Individual
Location Address
8201 PRESTON RD SUITE 375 DALLAS, TX 75225
Location Phone
(214) 361-6669
Location Fax
(214) 361-1847
Mailing Address
8201 PRESTON RD SUITE 375 DALLAS, TX 75225
Mailing Phone
(214) 361-6669
Mailing Fax
(214) 361-1847
Is Sole Proprietor?
No
Enumeration Date
08-17-2006
Last Update Date
07-08-2007
Code Navigator

A dentist like John Kostohryz is a skilled in and licensed provider that diagnoses and treats problems with patients teeth, gums, and related parts of the mouth. Dentists educate patients on how to take care of the teeth and gums and provide information on diet choices that affect oral health. Dentists must be licensed in the state in which they work.

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

Dentist Endodontics

Taxonomy Code
1223E0200X
Type
Dental Providers
License No.
10970
License State
TX
Taxonomy Description
The branch of dentistry that is concerned with the morphology, physiology and pathology of the human dental pulp and periradicular tissues. Its study and practice encompass the basic and clinical sciences including biology of the normal pulp, the etiology, diagnosis, prevention and treatment of diseases and injuries of the pulp and associated periradicular conditions.

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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 1902919541, we treat the final digit (1) 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 69. The final step is to find the difference between that total and the next multiple of ten (70 - 69 = 1).

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
9
Unchanged
Pos 3
0
Doubled → 0
Pos 4
2
Unchanged
Pos 5
9
Doubled → 18 → 1 + 8
Pos 6
1
Unchanged
Pos 7
9
Doubled → 18 → 1 + 8
Pos 8
5
Unchanged
Pos 9
4
Doubled → 8
Check
1
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 0 → 0 9 → 18 → 9 9 → 18 → 9 4 → 8

Step 2: Add all digits plus the NPI constant

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

2 + 9 + 0 + 2 + 1 + 8 + 1 + 1 + 8 + 5 + 8 + 24 = 69

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

The next multiple of ten after 69 is 70. The difference is the calculated check digit.

70 - 69 = 1
This NPI is valid
The calculated check digit is 1, which matches the last digit of 1902919541.

Other Providers at the Same Location


The following 18 providers are registered at the same or a nearby location.

Dermatology
8201 PRESTON RD, STE 350
DALLAS, TX 75225
Dentist (Endodontics)
8201 PRESTON RD, STE 375
DALLAS, TX 75225
Dentist (Endodontics)
8201 PRESTON RD, STE 375
DALLAS, TX 75225
Dentist (Endodontics)
8201 PRESTON RD, STE 375
DALLAS, TX 75225
Dentist (Endodontics)
8201 PRESTON RD, STE 375
DALLAS, TX 75225
Dentist (Endodontics)
8201 PRESTON RD, STE 375
DALLAS, TX 75225
Dentist (Endodontics)
8201 PRESTON RD, STE 375
DALLAS, TX 75225
Dentist (General Practice)
8201 PRESTON RD, SUITE #475
DALLAS, TX 75225
Dentist (Oral and Maxillofacial Surgery)
8201 PRESTON RD, SUITE 260
DALLAS, TX 75225
Family Medicine
8201 PRESTON RD, SUITE 560
DALLAS, TX 75225
Internal Medicine
8201 PRESTON RD, SUITE 560
DALLAS, TX 75225
Dentist (Orthodontics and Dentofacial Orthopedics)
8201 PRESTON RD, SUITE 555
DALLAS, TX 75225
Clinic/Center (Sleep Disorder Diagnostic)
8201 PRESTON RD, STE 274
DALLAS, TX 75225
Durable Medical Equipment & Medical Supplies
8201 PRESTON RD, STE 274
DALLAS, TX 75225
Oral & Maxillofacial Surgery
8201 PRESTON RD, SUITE 260
DALLAS, TX 75225
Dentist (General Practice)
8201 PRESTON RD, SUITE 750
DALLAS, TX 75225
Dermatology
8201 PRESTON RD, STE 350
DALLAS, TX 75225
Dentist (Endodontics)
8201 PRESTON RD, STE 375
DALLAS, TX 75225

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1902919541, enumerated as an "individual" on August 17, 2006.

The provider is located at 8201 PRESTON RD SUITE 375 DALLAS, TX 75225 and the phone number is (214) 361-6669.

Dentist with taxonomy code 1223E0200X and a focus in Endodontics.