DR. TOURAJ KHALILZADEH DMD, MD
NPI 1578606844
Dentist - Oral and Maxillofacial Surgery in Walnut Creek, CA

NPI Status: Active since February 15, 2007

Contact Information

1981 N BROADWAY
SUITE 180
WALNUT CREEK, CA
ZIP 94596
Phone: (925) 478-4583
Fax: (925) 357-3899

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  • Individual
  • Male
  • Dentist
  • Oral and Maxillofacial Surgery

About TOURAJ KHALILZADEH

This page provides the complete NPI Profile along with additional information for Touraj Khalilzadeh, a provider established in Walnut Creek, California with a medical specialization in Dentist, focusing in oral and maxillofacial surgery . The healthcare provider is registered in the NPI registry with number 1578606844 assigned on February 2007. The practitioner's primary taxonomy code is 1223S0112X with license number A121945 (CA). The provider is registered as an individual and his NPI record was last updated 13 years ago.

NPI
1578606844
Provider Name
DR. TOURAJ KHALILZADEH DMD, MD
Gender
Male
Entity Type
Individual
Location Address
1981 N BROADWAY SUITE 180 WALNUT CREEK, CA 94596
Location Phone
(925) 478-4583
Location Fax
(925) 357-3899
Mailing Address
1375 LICK AVE #223 SAN JOSE, CA 95110
Mailing Phone
(443) 527-6884
Is Sole Proprietor?
Yes
Enumeration Date
02-15-2007
Last Update Date
02-07-2013
Code Navigator

A dentist like Touraj Khalilzadeh 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.

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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

Dentist Oral and Maxillofacial Surgery

Taxonomy Code
1223S0112X
Type
Dental Providers
License No.
A121945
License State
CA
Taxonomy Description
An oral and maxillofacial surgery dentist specialized in the diagnosis, surgical and adjunctive treatment of diseases, injuries and defects involving both the functional and esthetic aspects of the hard and soft tissues of the oral and maxillofacial region.

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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 1578606844, we treat the final digit (4) 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 66. The final step is to find the difference between that total and the next multiple of ten (70 - 66 = 4).

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
5
Unchanged
Pos 3
7
Doubled → 14 → 1 + 4
Pos 4
8
Unchanged
Pos 5
6
Doubled → 12 → 1 + 2
Pos 6
0
Unchanged
Pos 7
6
Doubled → 12 → 1 + 2
Pos 8
8
Unchanged
Pos 9
4
Doubled → 8
Check
4
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 7 → 14 → 5 6 → 12 → 3 6 → 12 → 3 4 → 8

Step 2: Add all digits plus the NPI constant

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

2 + 5 + 1 + 4 + 8 + 1 + 2 + 0 + 1 + 2 + 8 + 8 + 24 = 66

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

The next multiple of ten after 66 is 70. The difference is the calculated check digit.

70 - 66 = 4
This NPI is valid
The calculated check digit is 4, which matches the last digit of 1578606844.

Other Providers at the Same Location


The following 10 providers are registered at the same or a nearby location.

Psychiatry & Neurology (Neurology)
1981 N BROADWAY, SUITE 248
WALNUT CREEK, CA 94596
Emergency Medicine
1981 N BROADWAY, SUITE 200
WALNUT CREEK, CA 94596
Preventive Medicine (Preventive Medicine/Occupational Environmental Medicine)
1981 N BROADWAY, SUITE 190
WALNUT CREEK, CA 94596
Dentist
1981 N BROADWAY, SUITE # 212
WALNUT CREEK, CA 94596
Family Medicine (Obesity Medicine)
1981 N BROADWAY, SUITE 200
WALNUT CREEK, CA 94596
Naturopath
1981 N BROADWAY, SUITE #255
WALNUT CREEK, CA 94596
Nurse Practitioner
1981 N BROADWAY, SUITE 200
WALNUT CREEK, CA 94596
Naturopath
1981 N BROADWAY, SUITE 255
WALNUT CREEK, CA 94596
Nurse Practitioner (Family)
1981 N BROADWAY, SUITE 190
WALNUT CREEK, CA 94596
Preventive Medicine (Occupational Medicine)
1981 N BROADWAY, SUITE 190
WALNUT CREEK, CA 94596

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1578606844, enumerated as an "individual" on February 15, 2007.

The provider is located at 1981 N BROADWAY SUITE 180 WALNUT CREEK, CA 94596 and the phone number is (925) 478-4583.

Dentist with taxonomy code 1223S0112X and a focus in Oral and Maxillofacial Surgery.