DR. THOMAS MARK ALUN VAUGHAN BDS FDS MORTH. MSC
NPI 1235072638
Dentist - Orthodontics and Dentofacial Orthopedics in San Francisco, CA
NPI Status: Active since April 10, 2026
Contact Information
155 5TH ST
SAN FRANCISCO, CA
ZIP 94103
Phone: (415) 706-7446
- Individual
- Male
- Dentist
- Orthodontics and Dentofacial Orthopedics
About THOMAS VAUGHAN
This page provides the complete NPI Profile along with additional information for Thomas Vaughan, a provider established in San Francisco, California with a medical specialization in Dentist, focusing in orthodontics and dentofacial orthopedics . The healthcare provider is registered in the NPI registry with number 1235072638 assigned on April 2026. The practitioner's primary taxonomy code is 1223X0400X with license number SP334 (CA). The provider is registered as an individual and his NPI record was last updated April 2026.
- NPI
- 1235072638
- Provider Name
- DR. THOMAS MARK ALUN VAUGHAN BDS FDS MORTH. MSC
- Gender
- Male
- Entity Type
- Individual
- Location Address
- 155 5TH ST SAN FRANCISCO, CA 94103
- Location Phone
- (415) 706-7446
- Mailing Address
- 27 PARK RIDGE RD SAN RAFAEL, CA 94903
- Mailing Phone
- (650) 398-9586
- Is Sole Proprietor?
- No
- Enumeration Date
- 04-10-2026
- Last Update Date
- 04-10-2026
- Code Navigator
A dentist like Thomas Vaughan 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 Orthodontics and Dentofacial Orthopedics
- Taxonomy Code
- 1223X0400X
- Type
- Dental Providers
- License No.
- SP334
- License State
- CA
- Taxonomy Description
- That area of dentistry concerned with the supervision, guidance and correction of the growing or mature dentofacial structures, including those conditions that require movement of teeth or correction of malrelationships and malformations of their related structures and the adjustment of relationships between and among teeth and facial bones by the application of forces and/or the stimulation and redirection of functional forces within the craniofacial complex. Major responsibilities of orthodontic practice include the diagnosis, prevention, interception and treatment of all forms of malocclusion of the teeth and associated alterations in their surrounding structures; the design, application and control of functional and corrective appliances; and the guidance of the dentition and its supporting structures to attain and maintain optimum occlusal relations in physiologic and esthetic harmony among facial and cranial structures.
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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 1235072638, we treat the final digit (8) 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 62. The final step is to find the difference between that total and the next multiple of ten (70 - 62 = 8).
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 62 is 70. The difference is the calculated check digit.
Other Providers at the Same Location
The following 20 providers are registered at the same or a nearby location.
SAN FRANCISCO, CA 94103
SAN FRANCISCO, CA 94103
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1235072638, enumerated as an "individual" on April 10, 2026.
The provider is located at 155 5TH ST SAN FRANCISCO, CA 94103 and the phone number is (415) 706-7446.
Dentist with taxonomy code 1223X0400X and a focus in Orthodontics and Dentofacial Orthopedics.
