KARL ERIK ENGDAHL DDS. PRACTICE LIMITE
NPI 1619302692
Dentist - Periodontics in Walnut Creek, CA
NPI Status: Active since September 09, 2013
Contact Information
2225 OLYMPIC BOVLEVARD
WALNUT CREEK, CA
ZIP 94595
Phone: (925) 939-5852
NPPES record last updated: September 9, 2013. Verified against the NPPES registry weekly; last sync: July 12, 2026.
- Individual
- Male
- Dentist
- Periodontics
About KARL ENGDAHL
This page provides the complete NPI Profile along with additional information for Karl Engdahl, a provider established in Walnut Creek, California with a medical specialization in Dentist, focusing in periodontics . The healthcare provider is registered in the NPI registry with number 1619302692 assigned on September 2013. The practitioner's primary taxonomy code is 1223P0300X with license number 19057 (CA). The provider is registered as an individual and his NPI record was last updated 13 years ago.
- NPI
- 1619302692
- Provider Name
- KARL ERIK ENGDAHL DDS. PRACTICE LIMITE
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 2225 OLYMPIC BOVLEVARD WALNUT CREEK, CA 94595
- Location Phone
- (925) 939-5852
- Mailing Address
- P.O. BOX 2638 WALNUT CREEK, CA 94595
- Mailing Phone
- (925) 939-5852
- Mailing Fax
- (925) 939-9668
- Is Sole Proprietor?
- Yes
- Enumeration Date
- 09-09-2013
- Last Update Date
- 09-09-2013
- Code Navigator
A dentist like Karl Engdahl 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 Periodontics
- Taxonomy Code
- 1223P0300X
- Type
- Dental Providers
- License No.
- 19057
- License State
- CA
- Taxonomy Description
- That specialty of dentistry which encompasses the prevention, diagnosis and treatment of diseases of the supporting and surrounding tissues of the teeth or their substitutes and the maintenance of the health, function and esthetics of these structures and tissues.
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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 1619302692, 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 68. The final step is to find the difference between that total and the next multiple of ten (70 - 68 = 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.
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 68 is 70. The difference is the calculated check digit.
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1619302692, enumerated as an "individual" on September 09, 2013.
The provider is located at 2225 OLYMPIC BOVLEVARD WALNUT CREEK, CA 94595 and the phone number is (925) 939-5852.
Dentist with taxonomy code 1223P0300X and a focus in Periodontics.
