DR. KATHERINE DANIELLE WILLIAMSON MD
NPI 1982916375
Pediatrics in Lake Forest, CA

NPI Status: Active since July 14, 2010

Contact Information

23321 EL TORO RD
SUITE F
LAKE FOREST, CA
ZIP 92630
Phone: (949) 388-1798

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  • Individual
  • Female
  • Pediatrics

About KATHERINE WILLIAMSON

This page provides the complete NPI Profile along with additional information for Katherine Williamson, a pediatrician established in Lake Forest, California with a medical specialization in Pediatrics. The healthcare provider is registered in the NPI registry with number 1982916375 assigned on July 2010. The practitioner's primary taxonomy code is 208000000X with license number A112985 (CA). The provider is registered as an individual and her NPI record was last updated 9 years ago.

NPI
1982916375
Provider Name
DR. KATHERINE DANIELLE WILLIAMSON MD
Gender
Female
Entity Type
Individual
Location Address
23321 EL TORO RD SUITE F LAKE FOREST, CA 92630
Location Phone
(949) 388-1798
Mailing Address
23321 EL TORO RD SUITE F LAKE FOREST, CA 92630
Mailing Phone
(949) 388-1798
Is Sole Proprietor?
Yes
Enumeration Date
07-14-2010
Last Update Date
01-17-2017
Code Navigator

A pediatrician like Katherine Williamson is a physician who has completed a pediatric residency and is board-certified or board-eligible in a pediatric specialty. Pediatric care providers are trained to care for newborns, infants, children and adolescents. A pediatrician could perform physical exams, manage vaccinations, monitor development milestones, diagnose illnesses, infections, injuries or other health problems, etc.

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

Pediatrics

Taxonomy Code
208000000X
Type
Allopathic & Osteopathic Physicians
License No.
A112985
License State
CA
Taxonomy Description
A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development.

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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 1982916375, we treat the final digit (5) 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 65. The final step is to find the difference between that total and the next multiple of ten (70 - 65 = 5).

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
9
Unchanged
Pos 3
8
Doubled → 16 → 1 + 6
Pos 4
2
Unchanged
Pos 5
9
Doubled → 18 → 1 + 8
Pos 6
1
Unchanged
Pos 7
6
Doubled → 12 → 1 + 2
Pos 8
3
Unchanged
Pos 9
7
Doubled → 14 → 1 + 4
Check
5
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 8 → 16 → 7 9 → 18 → 9 6 → 12 → 3 7 → 14 → 5

Step 2: Add all digits plus the NPI constant

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

2 + 9 + 1 + 6 + 2 + 1 + 8 + 1 + 1 + 2 + 3 + 1 + 4 + 24 = 65

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

The next multiple of ten after 65 is 70. The difference is the calculated check digit.

70 - 65 = 5
This NPI is valid
The calculated check digit is 5, which matches the last digit of 1982916375.

Other Providers at the Same Location


The following 11 providers are registered at the same or a nearby location.

Nurse Practitioner (Pediatrics)
23321 EL TORO RD, SUITES F & G
LAKE FOREST, CA 92630
Pediatrics
23321 EL TORO RD, SUITES F&G
LAKE FOREST, CA 92630
Pediatrics
23321 EL TORO RD, SUITES F&G
LAKE FOREST, CA 92630
Dentist
23321 EL TORO RD, SUITE D
LAKE FOREST, CA 92630
Nurse Practitioner (Pediatrics)
23321 EL TORO RD, SUITES F&G
LAKE FOREST, CA 92630
Nurse Practitioner (Pediatrics)
23321 EL TORO RD, SUITES F&G
LAKE FOREST, CA 92630
Internal Medicine (Nephrology)
23321 EL TORO RD, SUITE H
LAKE FOREST, CA 92630
Dentist (General Practice)
23321 EL TORO RD, SUITE B
LAKE FOREST, CA 92630
Dentist (General Practice)
23321 EL TORO RD, SUTIE D
LAKE FOREST, CA 92630
Pediatrics
23321 EL TORO RD, SUITES F&G
LAKE FOREST, CA 92630
Dentist (Pediatric Dentistry)
23321 EL TORO RD, SUITE C
LAKE FOREST, CA 92630

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1982916375, enumerated as an "individual" on July 14, 2010.

The provider is located at 23321 EL TORO RD SUITE F LAKE FOREST, CA 92630 and the phone number is (949) 388-1798.

Pediatrics with taxonomy code 208000000X.