YAN ZHANG, MD
NPI 1124496617
Clinic/Center in Ontario, CA

NPI Status: Active since September 14, 2015

Contact Information

653 E E ST STE 107
ONTARIO, CA
ZIP 91764
Phone: (909) 270-1830
Fax: (888) 523-5237

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  • Organization
  • Clinic/Center

About YAN ZHANG, MD

This page provides the complete NPI Profile along with additional information for Yan Zhang, Md, a provider established in Ontario, California operating as a Clinic/center. The healthcare provider is registered in the NPI registry with number 1124496617 assigned on September 2015. The practitioner's primary taxonomy code is 261Q00000X with license number A120484 (CA). The provider is registered as an organization and their NPI record was last updated 11 years ago. The authorized official of this NPI record is Dr. Yan Zhang Md (Md)

NPI
1124496617
Provider Name
YAN ZHANG, MD
Entity Type
Organization
Location Address
653 E E ST STE 107 ONTARIO, CA 91764
Location Phone
(909) 270-1830
Location Fax
(888) 523-5237
Mailing Address
653 E E ST STE 107 ONTARIO, CA 91764
Mailing Phone
(909) 270-1830
Mailing Fax
(888) 523-5237
Is Sole Proprietor?
No
Is Organization Subpart?
No
Enumeration Date
09-14-2015
Last Update Date
09-14-2015
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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

Clinic/Center

Taxonomy Code
261Q00000X
Type
Ambulatory Health Care Facilities
License No.
A120484
License State
CA
Taxonomy Description
A facility or distinct part of one used for the diagnosis and treatment of outpatients. Clinic/Center is irregularly defined, sometimes being limited to organizations serving specialized treatment requirements or distinct patient/client groups (e.g., radiology, poor, and public health).

Authorized Official

The authorized official is the designated individual with the legal authority to make changes to the provider’s official NPI record. For organizations, the authorized official must be a general partner, chairman of the board, CEO, CFO or a direct owner holding at least a 5 percent stake in the medical organization.

Authorized Official Name

DR. YAN ZHANG MD

Authorized Official Title
MD
Authorized Official Phone
(909) 270-1830

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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 1124496617, 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
1
Doubled → 2
Pos 2
1
Unchanged
Pos 3
2
Doubled → 4
Pos 4
4
Unchanged
Pos 5
4
Doubled → 8
Pos 6
9
Unchanged
Pos 7
6
Doubled → 12 → 1 + 2
Pos 8
6
Unchanged
Pos 9
1
Doubled → 2
Check
7
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 4 → 8 6 → 12 → 3 1 → 2

Step 2: Add all digits plus the NPI constant

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

2 + 1 + 4 + 4 + 8 + 9 + 1 + 2 + 6 + 2 + 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 1124496617.

Other Providers at the Same Location


The following 1 provider is registered at the same or a nearby location.

Internal Medicine
653 E E ST STE 107
ONTARIO, CA 91764

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1124496617, enumerated as an "organization" on September 14, 2015.

The provider is located at 653 E E ST STE 107 ONTARIO, CA 91764 and the phone number is (909) 270-1830.

Clinic/Center with taxonomy code 261Q00000X.