DR. THOMAS Y. IWASHITA DC
NPI 1669529244
Chiropractor in Garden Grove, CA

NPI Status: Active since January 04, 2007

Contact Information

11562 KNOTT ST STE 17
GARDEN GROVE, CA
ZIP 92841
Phone: (714) 209-7602
Fax: (714) 209-7465

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  • Individual
  • Male
  • Chiropractor

About THOMAS IWASHITA

This page provides the complete NPI Profile along with additional information for Thomas Iwashita, a provider established in Garden Grove, California with a medical specialization in Chiropractor. The healthcare provider is registered in the NPI registry with number 1669529244 assigned on January 2007. The practitioner's primary taxonomy code is 111N00000X with license number DC27090 (CA). The provider is registered as an individual and his NPI record was last updated one year ago.

NPI
1669529244
Provider Name
DR. THOMAS Y. IWASHITA DC
Gender
Male
Entity Type
Individual
Location Address
11562 KNOTT ST STE 17 GARDEN GROVE, CA 92841
Location Phone
(714) 209-7602
Location Fax
(714) 209-7465
Mailing Address
11562 KNOTT ST STE 17 GARDEN GROVE, CA 92841
Mailing Phone
(714) 209-7602
Mailing Fax
(714) 209-7465
Is Sole Proprietor?
No
Enumeration Date
01-04-2007
Last Update Date
02-05-2025
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A chiropractor like Thomas Iwashita helps patients with problems of the neuromusculoskeletal system, which includes nerves, bones, muscles, ligaments, and tendons. Chiropractors use spinal adjustments and manipulation, as well as other clinical interventions, to manage health issues such as back and neck pain. Some chiropractors apply procedures like massage therapy, rehabilitative exercise, ultrasound and spinal adjustments and manipulation. A chiropractor focuses on the patients overall health and might refer patients to other healthcare professionals if necessary.

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

Chiropractor

Taxonomy Code
111N00000X
Type
Chiropractic Providers
License No.
DC27090
License State
CA
Taxonomy Description
A provider qualified by a Doctor of Chiropractic (D.C.), licensed by the State and who practices chiropractic medicine -that discipline within the healing arts which deals with the nervous system and its relationship to the spinal column and its interrelationship with other body systems.

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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 1669529244, 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
6
Unchanged
Pos 3
6
Doubled → 12 → 1 + 2
Pos 4
9
Unchanged
Pos 5
5
Doubled → 10 → 1 + 0
Pos 6
2
Unchanged
Pos 7
9
Doubled → 18 → 1 + 8
Pos 8
2
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 6 → 12 → 3 5 → 10 → 1 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 + 6 + 1 + 2 + 9 + 1 + 0 + 2 + 1 + 8 + 2 + 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 1669529244.

Other Providers at the Same Location


The following 2 providers are registered at the same or a nearby location.

Chiropractor (Rehabilitation)
11562 KNOTT ST STE 17
GARDEN GROVE, CA 92841
Chiropractor
11562 KNOTT ST STE 17
GARDEN GROVE, CA 92841

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1669529244, enumerated as an "individual" on January 04, 2007.

The provider is located at 11562 KNOTT ST STE 17 GARDEN GROVE, CA 92841 and the phone number is (714) 209-7602.

Chiropractor with taxonomy code 111N00000X.