MADELINE DUNCAN CHIROPRACTIC CORPORATION
NPI 1881407260
Chiropractor in Danville, CA

NPI Status: Active since January 29, 2025

Contact Information

318 DIABLO RD STE 245
DANVILLE, CA
ZIP 94526
Phone: (925) 290-1830
Fax: (925) 290-1564

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  • Organization
  • Chiropractor

About MADELINE DUNCAN CHIROPRACTIC CORPORATION

This page provides the complete NPI Profile along with additional information for Madeline Duncan Chiropractic Corporation, a provider established in Danville, California operating as a Chiropractor. The healthcare provider is registered in the NPI registry with number 1881407260 assigned on January 2025. The practitioner's primary taxonomy code is 111N00000X. The provider is registered as an organization and their NPI record was last updated one year ago. The organization operates as a Single Specialty Group with one or more individual practitioners, all of who practice with the same area of specialization. The authorized official of this NPI record is Dr. Madeline Duncan D.c. (President)

NPI
1881407260
Provider Name
MADELINE DUNCAN CHIROPRACTIC CORPORATION
Entity Type
Organization
Location Address
318 DIABLO RD STE 245 DANVILLE, CA 94526
Location Phone
(925) 290-1830
Location Fax
(925) 290-1564
Mailing Address
318 DIABLO RD STE 245 DANVILLE, CA 94526
Mailing Phone
(925) 290-1830
Mailing Fax
(925) 290-1564
Is Sole Proprietor?
No
Is Organization Subpart?
No
Enumeration Date
01-29-2025
Last Update Date
01-29-2025
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A chiropractor like Madeline Duncan Chiropractic Corporation helps patients with problems of the neuromusculoskeletal system, which includes nerves, bones, muscles, ligaments, and tendons. Chiropractors use spinal adjustments and manipulation, as well as other clinical interventions, to manage health issues such as back and neck pain. Some chiropractors apply procedures like massage therapy, rehabilitative exercise, ultrasound and spinal adjustments and manipulation. A chiropractor focuses on the patients overall health and might refer patients to other healthcare professionals if necessary.

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

Chiropractor

Taxonomy Code
111N00000X
Type
Chiropractic Providers
Taxonomy Description
A provider qualified by a Doctor of Chiropractic (D.C.), licensed by the State and who practices chiropractic medicine -that discipline within the healing arts which deals with the nervous system and its relationship to the spinal column and its interrelationship with other body systems.

Group Taxonomy 193400000X SINGLE SPECIALTY GROUP

This provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.

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. MADELINE DUNCAN D.C.

Authorized Official Title
PRESIDENT
Authorized Official Phone
(925) 286-0259

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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 1881407260, we treat the final digit (0) 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 60. The final step is to find the difference between that total and the next multiple of ten (60 - 60 = 0).

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
8
Doubled → 16 → 1 + 6
Pos 4
1
Unchanged
Pos 5
4
Doubled → 8
Pos 6
0
Unchanged
Pos 7
7
Doubled → 14 → 1 + 4
Pos 8
2
Unchanged
Pos 9
6
Doubled → 12 → 1 + 2
Check
0
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 8 → 16 → 7 4 → 8 7 → 14 → 5 6 → 12 → 3

Step 2: Add all digits plus the NPI constant

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

2 + 8 + 1 + 6 + 1 + 8 + 0 + 1 + 4 + 2 + 1 + 2 + 24 = 60

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

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

60 - 60 = 0
This NPI is valid
The calculated check digit is 0, which matches the last digit of 1881407260.

Other Providers at the Same Location


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

Chiropractor
318 DIABLO RD STE 245
DANVILLE, CA 94526

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1881407260, enumerated as an "organization" on January 29, 2025.

The provider is located at 318 DIABLO RD STE 245 DANVILLE, CA 94526 and the phone number is (925) 290-1830.

Chiropractor with taxonomy code 111N00000X.