DR. JOANNE YU-CHEN JENG DDS
NPI 1861646333
Dentist - General Practice in San Francisco, CA

NPI Status: Active since November 11, 2008

Contact Information

380 20TH AVE
STE 102
SAN FRANCISCO, CA
ZIP 94121
Phone: (415) 752-4150
Fax: (415) 752-7550

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  • Individual
  • Female
  • Dentist
  • General Practice

About JOANNE YU-CHEN JENG

This page provides the complete NPI Profile along with additional information for Joanne Yu-chen Jeng, 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 1861646333 assigned on November 2008. The practitioner's primary taxonomy code is 1223G0001X with license number 52872 (CA). The provider is registered as an individual and her NPI record was last updated 3 years ago.

NPI
1861646333
Provider Name
DR. JOANNE YU-CHEN JENG DDS
Gender
Female
Entity Type
Individual
Location Address
380 20TH AVE STE 102 SAN FRANCISCO, CA 94121
Location Phone
(415) 752-4150
Location Fax
(415) 752-7550
Mailing Address
380 20TH AVE STE 102 SAN FRANCISCO, CA 94121
Mailing Phone
(415) 752-4150
Mailing Fax
(415) 752-7550
Is Sole Proprietor?
Yes
Enumeration Date
11-11-2008
Last Update Date
11-07-2023
Code Navigator

A dentist like Joanne Yu-chen Jeng 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.
52872
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 1861646333, we treat the final digit (3) 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 57. The final step is to find the difference between that total and the next multiple of ten (60 - 57 = 3).

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

Step 2: Add all digits plus the NPI constant

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

2 + 8 + 1 + 2 + 1 + 1 + 2 + 4 + 1 + 2 + 3 + 6 + 24 = 57

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

The next multiple of ten after 57 is 60. The difference is the calculated check digit.

60 - 57 = 3
This NPI is valid
The calculated check digit is 3, which matches the last digit of 1861646333.

Other Providers at the Same Location


The following 4 providers are registered at the same or a nearby location.

Dentist (Orthodontics and Dentofacial Orthopedics)
380 20TH AVE, SUITE 201
SAN FRANCISCO, CA 94121
Dentist (General Practice)
380 20TH AVE, SUITE 202
SAN FRANCISCO, CA 94121
Dentist
380 20TH AVE, SUITE 101
SAN FRANCISCO, CA 94121
Dentist (General Practice)
380 20TH AVE, SUITE 302
SAN FRANCISCO, CA 94121

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1861646333, enumerated as an "individual" on November 11, 2008.

The provider is located at 380 20TH AVE STE 102 SAN FRANCISCO, CA 94121 and the phone number is (415) 752-4150.

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