BRIAN HOWARD CLAGUE M.D.
NPI 1811293988
Neurological Surgery in Fresno, CA

NPI Status: Active since February 07, 2011

Contact Information

255 N HERWALDT DR
FRESNO, CA
ZIP 93701
Phone: (559) 459-7300
Fax: (559) 459-3750

NPI Profile Information
Primary Taxonomy
NPI Validation
Other Providers Same Location
Frequently Asked Questions

Individual
Male
Neurological Surgery

About BRIAN CLAGUE

This page provides the complete NPI Profile along with additional information for Brian Clague, a provider established in Fresno, California with a medical specialization in Neurological Surgery. The healthcare provider is registered in the NPI registry with number 1811293988 assigned on February 2011. The practitioner's primary taxonomy code is 207T00000X with license number A23438 (CA). The provider is registered as an individual and his NPI record was last updated 12 years ago.

NPI: 1811293988
Provider Name: BRIAN HOWARD CLAGUE M.D.
Gender: Male
Entity Type: Individual
Location Address: 255 N HERWALDT DR FRESNO, CA 93701
Location Phone: (559) 459-7300
Location Fax: (559) 459-3750
Mailing Address: 2625 E DIVISADERO ST FRESNO, CA 93721
Mailing Phone: (559) 443-2682
Mailing Fax: (559) 459-3750
Is Sole Proprietor?: No
Enumeration Date: 02-07-2011
Last Update Date: 07-01-2014
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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: Neurological Surgery
Taxonomy Code: 207T00000X
Type: Allopathic & Osteopathic Physicians
License No.: A23438
License State: CA
Taxonomy Description: A neurological surgeon provides the operative and non-operative management (i.e., prevention, diagnosis, evaluation, treatment, critical care, and rehabilitation) of disorders of the central, peripheral, and autonomic nervous systems, including their supporting structures and vascular supply; the evaluation and treatment of pathological processes which modify function or activity of the nervous system; and the operative and non-operative management of pain. A neurological surgeon treats patients with disorders of the nervous system; disorders of the brain, meninges, skull, and their blood supply, including the extracranial carotid and vertebral arteries; disorders of the pituitary gland; disorders of the spinal cord, meninges, and vertebral column, including those which may require treatment by spinal fusion or instrumentation; and disorders of the cranial and spinal nerves throughout their distribution.

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 1811293988, 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 72. The final step is to find the difference between that total and the next multiple of ten (80 - 72 = 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.

Pos 1

Doubled → 2

Pos 2

Unchanged

Pos 3

Doubled → 2

Pos 4

Unchanged

Pos 5

Doubled → 4

Pos 6

Unchanged

Pos 7

Doubled → 6

Pos 8

Unchanged

Pos 9

Doubled → 16 → 1 + 6

Check

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 1 → 2 2 → 4 3 → 6 8 → 16 → 7

Step 2: Add all digits plus the NPI constant

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

2 + 8 + 2 + 1 + 4 + 9 + 6 + 9 + 1 + 6 + 24 = 72

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

The next multiple of ten after 72 is 80. The difference is the calculated check digit.

80 - 72 = 8

This NPI is valid

The calculated check digit is 8, which matches the last digit of 1811293988.