DR. MARGARET LAI OD
NPI 1114202181
Optometrist - Corneal and Contact Management in Santa Monica, CA

NPI Status: Active since October 20, 2011

Contact Information

2512 WASHINGTON AVE
SANTA MONICA, CA
ZIP 90403
Phone: (310) 453-5901

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  • Individual
  • Female
  • Optometrist
  • Corneal and Contact Management

About MARGARET LAI

This page provides the complete NPI Profile along with additional information for Margaret Lai, a provider established in Santa Monica, California with a medical specialization in Optometrist, focusing in corneal and contact management . The healthcare provider is registered in the NPI registry with number 1114202181 assigned on October 2011. The practitioner's primary taxonomy code is 152WC0802X with license number 11613T (CA). The provider is registered as an individual and her NPI record was last updated 15 years ago.

NPI
1114202181
Provider Name
DR. MARGARET LAI OD
Gender
Female
Entity Type
Individual
Location Address
2512 WASHINGTON AVE SANTA MONICA, CA 90403
Location Phone
(310) 453-5901
Mailing Address
2512 WASHINGTON AVE SANTA MONICA, CA 90403
Is Sole Proprietor?
Yes
Enumeration Date
10-20-2011
Last Update Date
10-20-2011
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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

Optometrist Corneal and Contact Management

Taxonomy Code
152WC0802X
Type
Eye and Vision Services Providers
License No.
11613T
License State
CA
Taxonomy Description
The professional activities performed by an Optometrist related to the fitting of contact lenses to an eye, ongoing evaluation of the cornea's ability to sustain successful contact lens wear, and treatment of any external eye or corneal condition which can affect contact lens wear.

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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 1114202181, we treat the final digit (1) 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 49. The final step is to find the difference between that total and the next multiple of ten (50 - 49 = 1).

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
1
Unchanged
Pos 3
1
Doubled → 2
Pos 4
4
Unchanged
Pos 5
2
Doubled → 4
Pos 6
0
Unchanged
Pos 7
2
Doubled → 4
Pos 8
1
Unchanged
Pos 9
8
Doubled → 16 → 1 + 6
Check
1
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 1 → 2 2 → 4 2 → 4 8 → 16 → 7

Step 2: Add all digits plus the NPI constant

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

2 + 1 + 2 + 4 + 4 + 0 + 4 + 1 + 1 + 6 + 24 = 49

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

The next multiple of ten after 49 is 50. The difference is the calculated check digit.

50 - 49 = 1
This NPI is valid
The calculated check digit is 1, which matches the last digit of 1114202181.

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1114202181, enumerated as an "individual" on October 20, 2011.

The provider is located at 2512 WASHINGTON AVE SANTA MONICA, CA 90403 and the phone number is (310) 453-5901.

Optometrist with taxonomy code 152WC0802X and a focus in Corneal and Contact Management.