CHERYL A WIDDIS DDS
NPI 1326225129
Dentist - General Practice in San Francisco, CA

NPI Status: Active since January 24, 2008

Contact Information

450 SUTTER STREET
2021
SAN FRANCISCO, CA
ZIP 94108
Phone: (415) 981-4960
Fax: (415) 981-4963

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  • Individual
  • Female
  • Dentist
  • General Practice

About CHERYL WIDDIS

This page provides the complete NPI Profile along with additional information for Cheryl Widdis, a provider established in San Francisco, California with a medical specialization in Dentist, focusing in general practice . The healthcare provider is registered in the NPI registry with number 1326225129 assigned on January 2008. The practitioner's primary taxonomy code is 1223G0001X with license number 34259 (CA). The provider is registered as an individual and her NPI record was last updated 18 years ago.

NPI
1326225129
Provider Name
CHERYL A WIDDIS DDS
Gender
Female
Entity Type
Individual
Location Address
450 SUTTER STREET 2021 SAN FRANCISCO, CA 94108
Location Phone
(415) 981-4960
Location Fax
(415) 981-4963
Mailing Address
450 SUTTER ST 2021 SAN FRANCISCO, CA 94108
Mailing Phone
(415) 981-4960
Mailing Fax
(415) 981-4963
Is Sole Proprietor?
Yes
Enumeration Date
01-24-2008
Last Update Date
01-24-2008
Code Navigator

A dentist like Cheryl Widdis 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 General Practice

Taxonomy Code
1223G0001X
Type
Dental Providers
License No.
34259
License State
CA
Taxonomy Description
A general dentist is the primary dental care provider for patients of all ages. The general dentist is responsible for the diagnosis, treatment, management and overall coordination of services related to patients' oral health needs.

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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 1326225129, we treat the final digit (9) 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 51. The final step is to find the difference between that total and the next multiple of ten (60 - 51 = 9).

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
3
Unchanged
Pos 3
2
Doubled → 4
Pos 4
6
Unchanged
Pos 5
2
Doubled → 4
Pos 6
2
Unchanged
Pos 7
5
Doubled → 10 → 1 + 0
Pos 8
1
Unchanged
Pos 9
2
Doubled → 4
Check
9
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 2 → 4 2 → 4 5 → 10 → 1 2 → 4

Step 2: Add all digits plus the NPI constant

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

2 + 3 + 4 + 6 + 4 + 2 + 1 + 0 + 1 + 4 + 24 = 51

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

The next multiple of ten after 51 is 60. The difference is the calculated check digit.

60 - 51 = 9
This NPI is valid
The calculated check digit is 9, which matches the last digit of 1326225129.

Other Providers at the Same Location


The following 18 providers are registered at the same or a nearby location.

Clinic/Center (Ambulatory Surgical)
450 SUTTER STREET, SUITE 1212
SAN FRANCISCO, CA 94108
Anesthesiology
450 SUTTER STREET
SAN FRANCISCO, CA 94108
Anesthesiology
450 SUTTER STREET
SAN FRANCISCO, CA 94108
Dentist
450 SUTTER STREET, SUITE 2033
SAN FRANCISCO, CA 94108
Dentist (General Practice)
450 SUTTER STREET, SUITE 1419
SAN FRANCISCO, CA 94108
Dentist
450 SUTTER STREET, SUITE 2104
SAN FRANCISCO, CA 94108
Internal Medicine (Cardiovascular Disease)
450 SUTTER STREET, SUITE 1523
SAN FRANCISCO, CA 94108
Dentist
450 SUTTER STREET, SUITE 2104
SAN FRANCISCO, CA 94108
Dentist (General Practice)
450 SUTTER STREET, SUITE 2522
SAN FRANCISCO, CA 94108
Technician/Technologist (Ocularist)
450 SUTTER STREET, #703
SAN FRANCISCO, CA 94108
Dentist (Prosthodontics)
450 SUTTER STREET, SUITE 2425
SAN FRANCISCO, CA 94108
Nurse Practitioner (Family)
450 SUTTER STREET, SUITE 1504
SAN FRANCISCO, CA 94108
Audiologist
450 SUTTER STREET, SUITE 1400
SAN FRANCISCO, CA 94108
Family Medicine
450 SUTTER STREET, SUITE 1341
SAN FRANCISCO, CA 94108
Dentist (Prosthodontics)
450 SUTTER STREET, SUITE 2425
SAN FRANCISCO, CA 94108
Podiatrist (Foot Surgery)
450 SUTTER STREET, SUITE 1101
SAN FRANCISCO, CA 94108
Clinic/Center (Dental)
450 SUTTER STREET, SUITE 1919
SAN FRANCISCO, CA 94108
Dentist (General Practice)
450 SUTTER STREET, SUITE 1814
SAN FRANCISCO, CA 94108

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1326225129, enumerated as an "individual" on January 24, 2008.

The provider is located at 450 SUTTER STREET 2021 SAN FRANCISCO, CA 94108 and the phone number is (415) 981-4960.

Dentist with taxonomy code 1223G0001X and a focus in General Practice.