GRACE TANG DDS
NPI 1801340112
Dentist - General Practice in Castro Valley, CA

NPI Status: Active since August 04, 2016

Contact Information

20700 LAKE CHABOT RD
CASTRO VALLEY, CA
ZIP 94546
Phone: (510) 581-8888

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  • Individual
  • Female
  • Dentist
  • General Practice

About GRACE TANG

This page provides the complete NPI Profile along with additional information for Grace Tang, a provider established in Castro Valley, California with a medical specialization in Dentist, focusing in general practice . The healthcare provider is registered in the NPI registry with number 1801340112 assigned on August 2016. The practitioner's primary taxonomy code is 1223G0001X with license number 100644 (CA). The provider is registered as an individual and her NPI record was last updated 8 years ago.

NPI
1801340112
Provider Name
GRACE TANG DDS
Gender
Female
Entity Type
Individual
Location Address
20700 LAKE CHABOT RD CASTRO VALLEY, CA 94546
Location Phone
(510) 581-8888
Mailing Address
807 WASHINGTON ST DALY CITY, CA 94015
Is Sole Proprietor?
No
Enumeration Date
08-04-2016
Last Update Date
04-26-2018
Code Navigator

A dentist like Grace Tang 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

Secondary Locations

  • 3737 Lone Tree Way Ste F
    Antioch, CA 94509
    (415) 385-8575
  • 3737 Lone Tree Way Ste F
    Antioch, CA 94509
    (415) 385-8575

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 General Practice

Taxonomy Code
1223G0001X
Type
Dental Providers
License No.
100644
License State
CA
Taxonomy Description
A general dentist is the primary dental care provider for patients of all ages. The general dentist is responsible for the diagnosis, treatment, management and overall coordination of services related to patients' oral health needs.

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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 1801340112, we treat the final digit (2) 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 48. The final step is to find the difference between that total and the next multiple of ten (50 - 48 = 2).

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

Step 2: Add all digits plus the NPI constant

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

2 + 8 + 0 + 1 + 6 + 4 + 0 + 1 + 2 + 24 = 48

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

The next multiple of ten after 48 is 50. The difference is the calculated check digit.

50 - 48 = 2
This NPI is valid
The calculated check digit is 2, which matches the last digit of 1801340112.

Other Providers at the Same Location


The following 7 providers are registered at the same or a nearby location.

Family Medicine
20700 LAKE CHABOT RD, SUITE #107
CASTRO VALLEY, CA 94546
Dentist (Pediatric Dentistry)
20700 LAKE CHABOT RD, SUITE 205
CASTRO VALLEY, CA 94546
Point of Service
20700 LAKE CHABOT RD, STE 107
CASTRO VALLEY, CA 94546
Clinic/Center (Dental)
20700 LAKE CHABOT RD, SUITE 205
CASTRO VALLEY, CA 94546
Family Medicine
20700 LAKE CHABOT RD, SUITE 107
CASTRO VALLEY, CA 94546
Internal Medicine (Cardiovascular Disease)
20700 LAKE CHABOT RD, SUITE 107
CASTRO VALLEY, CA 94546
Dentist (Orthodontics and Dentofacial Orthopedics)
20700 LAKE CHABOT RD
CASTRO VALLEY, CA 94546

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1801340112, enumerated as an "individual" on August 04, 2016.

The provider is located at 20700 LAKE CHABOT RD CASTRO VALLEY, CA 94546 and the phone number is (510) 581-8888.

Dentist with taxonomy code 1223G0001X and a focus in General Practice.