MRS. ELIZABETH HELENA ROBERTSON RDH, RDA
NPI 1639552730
Dental Hygienist in Half Moon Bay, CA

NPI Status: Active since July 07, 2015

Contact Information

210 SAN MATEO RD
104
HALF MOON BAY, CA
ZIP 94019
Phone: (650) 727-3480

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  • Individual
  • Female
  • Dental Hygienist

About ELIZABETH ROBERTSON

This page provides the complete NPI Profile along with additional information for Elizabeth Robertson, a provider established in Half Moon Bay, California with a medical specialization in Dental Hygienist. The healthcare provider is registered in the NPI registry with number 1639552730 assigned on July 2015. The practitioner's primary taxonomy code is 124Q00000X with license number 26846 (CA). The provider is registered as an individual and her NPI record was last updated 11 years ago.

NPI
1639552730
Provider Name
MRS. ELIZABETH HELENA ROBERTSON RDH, RDA
Other Name
MISS ELIZABETH HELENA INNES RDH, RDA
Other Name Type
Former Name (1)
Gender
Female
Entity Type
Individual
Location Address
210 SAN MATEO RD 104 HALF MOON BAY, CA 94019
Location Phone
(650) 727-3480
Mailing Address
210 SAN MATEO RD 104 HALF MOON BAY, CA 94019
Is Sole Proprietor?
No
Enumeration Date
07-07-2015
Last Update Date
07-07-2015
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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

Dental Hygienist

Taxonomy Code
124Q00000X
Type
Dental Providers
License No.
26846
License State
CA
Taxonomy Description
An individual who has completed an accredited dental hygiene education program, and an individual who has been licensed by a state board of dental examiners to provide preventive care services under the supervision of a dentist. Functions that may be legally delegated to the dental hygienist vary based on the needs of the dentist, the educational preparation of the dental hygienist and state dental practice acts and regulations, but always include, at a minimum, scaling and polishing the teeth. To avoid misleading the public, no occupational title other than dental hygienist should be used to describe this dental auxiliary.

Secondary Taxonomies

The provider has reported to the NPI enumerator additional taxonomy codes. Multiple taxonomy codes may represent subspecialties or other areas of specialization the provider maybe licensed to practice.

No. Taxonomy Code Type Classification /
Specialization
License No. (State)
1126800000XDental Providers

Dental Assistant

72301 (CA)

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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 1639552730, we treat the final digit (0) 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 70. The final step is to find the difference between that total and the next multiple of ten (70 - 70 = 0).

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
3
Doubled → 6
Pos 4
9
Unchanged
Pos 5
5
Doubled → 10 → 1 + 0
Pos 6
5
Unchanged
Pos 7
2
Doubled → 4
Pos 8
7
Unchanged
Pos 9
3
Doubled → 6
Check
0
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 3 → 6 5 → 10 → 1 2 → 4 3 → 6

Step 2: Add all digits plus the NPI constant

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

2 + 6 + 6 + 9 + 1 + 0 + 5 + 4 + 7 + 6 + 24 = 70

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

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

70 - 70 = 0
This NPI is valid
The calculated check digit is 0, which matches the last digit of 1639552730.

Other Providers at the Same Location


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

Dentist (General Practice)
210 SAN MATEO RD, 104
HALF MOON BAY, CA 94019
Dentist
210 SAN MATEO RD, # 104
HALF MOON BAY, CA 94019

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1639552730, enumerated as an "individual" on July 07, 2015.

The provider is located at 210 SAN MATEO RD 104 HALF MOON BAY, CA 94019 and the phone number is (650) 727-3480.

Dental Hygienist with taxonomy code 124Q00000X.