DR. GARY MICHAEL SIGAFOOS D.D.S.
NPI 1891910857
Dentist - Periodontics in La Jolla, CA

NPI Status: Active since April 16, 2007

Contact Information

9850 GENESEE AVE
620
LA JOLLA, CA
ZIP 92037
Phone: (858) 535-8300
Fax: (858) 535-8309

NPI Profile Information
Primary Taxonomy
NPI Validation
Other Providers Same Location
Frequently Asked Questions

Individual
Male
Dentist
Periodontics

About GARY SIGAFOOS

This page provides the complete NPI Profile along with additional information for Gary Sigafoos, a provider established in La Jolla, California with a medical specialization in Dentist, focusing in periodontics . The healthcare provider is registered in the NPI registry with number 1891910857 assigned on April 2007. The practitioner's primary taxonomy code is 1223P0300X with license number 26127 (CA). The provider is registered as an individual and his NPI record was last updated 19 years ago.

NPI: 1891910857
Provider Name: DR. GARY MICHAEL SIGAFOOS D.D.S.
Gender: Male
Entity Type: Individual
Location Address: 9850 GENESEE AVE 620 LA JOLLA, CA 92037
Location Phone: (858) 535-8300
Location Fax: (858) 535-8309
Mailing Address: 9850 GENESEE AVE 620 LA JOLLA, CA 92037
Mailing Phone: (858) 535-8300
Mailing Fax: (858) 535-8309
Is Sole Proprietor?: No
Enumeration Date: 04-16-2007
Last Update Date: 07-08-2007
Code Navigator

A dentist like Gary Sigafoos 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.: 26127
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.

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 1891910857, we treat the final digit (7) 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 63. The final step is to find the difference between that total and the next multiple of ten (70 - 63 = 7).

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

Doubled → 2

Pos 2

Unchanged

Pos 3

Doubled → 18 → 1 + 8

Pos 4

Unchanged

Pos 5

Doubled → 18 → 1 + 8

Pos 6

Unchanged

Pos 7

Doubled → 0

Pos 8

Unchanged

Pos 9

Doubled → 10 → 1 + 0

Check

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 9 → 18 → 9 9 → 18 → 9 0 → 0 5 → 10 → 1

Step 2: Add all digits plus the NPI constant

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

2 + 8 + 1 + 8 + 1 + 1 + 8 + 1 + 0 + 8 + 1 + 0 + 24 = 63

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

The next multiple of ten after 63 is 70. The difference is the calculated check digit.

70 - 63 = 7

This NPI is valid

The calculated check digit is 7, which matches the last digit of 1891910857.

Other Providers at the Same Location

The following 20 providers are registered at the same or a nearby location.

FRANK EDWARD MAYER M.D.

Internal Medicine (Gastroenterology)

9850 GENESEE AVE, STE 930
LA JOLLA, CA 92037

San Diego County (858) 457-3737

SCOT A BREWSTER MD

Thoracic Surgery (Cardiothoracic Vascular Surgery)