AMANDA N SIU DDS INC
NPI 1780125518
Dentist - Pediatric Dentistry in Tustin, CA
NPI Status: Active since March 13, 2017
Contact Information
13362 NEWPORT AVE STE G
TUSTIN, CA
ZIP 92780
Phone: (714) 439-5706
Fax: (714) 439-5709
- Organization
- Dentist
- Pediatric Dentistry
About AMANDA N SIU DDS INC
This page provides the complete NPI Profile along with additional information for Amanda N Siu Dds Inc, a provider established in Tustin, California operating as a Dentist, focusing in pediatric dentistry . The healthcare provider is registered in the NPI registry with number 1780125518 assigned on March 2017. The practitioner's primary taxonomy code is 1223P0221X with license number 64432 (CA). The provider is registered as an organization and their NPI record was last updated February 2026. The organization operates as a Single Specialty Group with one or more individual practitioners, all of who practice with the same area of specialization. The authorized official of this NPI record is Dr. Amanda Siu Dds (Ceo)
- NPI
- 1780125518
- Provider Name
- AMANDA N SIU DDS INC
- Entity Type
- Organization
- Location Address
- 13362 NEWPORT AVE STE G TUSTIN, CA 92780
- Location Phone
- (714) 439-5706
- Location Fax
- (714) 439-5709
- Mailing Address
- 13362 NEWPORT AVE STE G TUSTIN, CA 92780
- Mailing Phone
- (714) 439-5706
- Mailing Fax
- (714) 439-5709
- Is Sole Proprietor?
- No
- Is Organization Subpart?
- No
- Enumeration Date
- 03-13-2017
- Last Update Date
- 02-18-2026
- Code Navigator
A dentist like Amanda N Siu Dds Inc 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 Pediatric Dentistry
- Taxonomy Code
- 1223P0221X
- Type
- Dental Providers
- License No.
- 64432
- License State
- CA
- Taxonomy Description
- An age-defined specialty that provides both primary and comprehensive preventive and therapeutic oral health care for infants and children through adolescence, including those with special health care needs.
Group Taxonomy 193400000X SINGLE SPECIALTY GROUP
This provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.
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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 1780125518, we treat the final digit (8) 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 52. The final step is to find the difference between that total and the next multiple of ten (60 - 52 = 8).
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.
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.
Step 2: Add all digits plus the NPI constant
Add the transformed values, the unchanged digits, and the constant 24.
Step 3: Find the amount needed to reach the next multiple of 10
The next multiple of ten after 52 is 60. The difference is the calculated check digit.
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1780125518, enumerated as an "organization" on March 13, 2017.
The provider is located at 13362 NEWPORT AVE STE G TUSTIN, CA 92780 and the phone number is (714) 439-5706.
Dentist with taxonomy code 1223P0221X and a focus in Pediatric Dentistry.
