DR. DEAN ARDEN RUDDELL O.D.
NPI 1811045222
Optometrist in Martinez, CA

NPI Status: Active since January 08, 2007

Contact Information

200 MUIR RD
MARTINEZ, CA
ZIP 94553
Phone: (925) 372-1532
Fax: (925) 229-7550

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  • Individual
  • Male
  • Optometrist

About DEAN RUDDELL

This page provides the complete NPI Profile along with additional information for Dean Ruddell, a provider established in Martinez, California with a medical specialization in Optometrist. The healthcare provider is registered in the NPI registry with number 1811045222 assigned on January 2007. The practitioner's primary taxonomy code is 152W00000X with license number 5934T (CA). The provider is registered as an individual and his NPI record was last updated 19 years ago.

NPI
1811045222
Provider Name
DR. DEAN ARDEN RUDDELL O.D.
Gender
Male
Entity Type
Individual
Location Address
200 MUIR RD MARTINEZ, CA 94553
Location Phone
(925) 372-1532
Location Fax
(925) 229-7550
Mailing Address
200 MUIR RD MARTINEZ, CA 94553
Mailing Phone
(925) 372-1532
Mailing Fax
(925) 229-7550
Is Sole Proprietor?
Yes
Enumeration Date
01-08-2007
Last Update Date
07-08-2007
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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

Optometrist

Taxonomy Code
152W00000X
Type
Eye and Vision Services Providers
License No.
5934T
License State
CA
Taxonomy Description
Doctors of optometry (ODs) are the primary health care professionals for the eye. Optometrists examine, diagnose, treat, and manage diseases, injuries, and disorders of the visual system, the eye, and associated structures as well as identify related systemic conditions affecting the eye. An optometrist has completed pre-professional undergraduate education in a college or university and four years of professional education at a college of optometry, leading to the doctor of optometry (O.D.) degree. Some optometrists complete an optional residency in a specific area of practice. Optometrists are eye health care professionals state-licensed to diagnose and treat diseases and disorders of the eye and visual system.

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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 1811045222, we treat the final digit (2) 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 48. The final step is to find the difference between that total and the next multiple of ten (50 - 48 = 2).

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
1
Doubled → 2
Pos 4
1
Unchanged
Pos 5
0
Doubled → 0
Pos 6
4
Unchanged
Pos 7
5
Doubled → 10 → 1 + 0
Pos 8
2
Unchanged
Pos 9
2
Doubled → 4
Check
2
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 0 → 0 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 + 8 + 2 + 1 + 0 + 4 + 1 + 0 + 2 + 4 + 24 = 48

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

The next multiple of ten after 48 is 50. The difference is the calculated check digit.

50 - 48 = 2
This NPI is valid
The calculated check digit is 2, which matches the last digit of 1811045222.

Other Providers at the Same Location


The following 20 providers are registered at the same or a nearby location.

Nurse Practitioner (Adult Health)
200 MUIR RD, KAISER MEDICAL OFFICES - MEDICINE F
MARTINEZ, CA 94553
Nurse Practitioner (Family)
200 MUIR RD
MARTINEZ, CA 94553
Nurse Practitioner (Women's Health)
200 MUIR RD, ENSENADA BLDG
MARTINEZ, CA 94553
Internal Medicine (Gastroenterology)
200 MUIR RD
MARTINEZ, CA 94553
Internal Medicine (Gastroenterology)
200 MUIR RD
MARTINEZ, CA 94553
Internal Medicine (Hematology & Oncology)
200 MUIR RD
MARTINEZ, CA 94553
Radiology (Diagnostic Radiology)
200 MUIR RD
MARTINEZ, CA 94553
Ophthalmology
200 MUIR RD
MARTINEZ, CA 94553
Pediatrics
200 MUIR RD
MARTINEZ, CA 94553
Internal Medicine
200 MUIR RD
MARTINEZ, CA 94553
Internal Medicine (Rheumatology)
200 MUIR RD
MARTINEZ, CA 94553
Obstetrics & Gynecology
200 MUIR RD
MARTINEZ, CA 94553
Anesthesiology
200 MUIR RD
MARTINEZ, CA 94553
Psychiatry & Neurology (Psychiatry)
200 MUIR RD
MARTINEZ, CA 94553
Physical Medicine & Rehabilitation
200 MUIR RD
MARTINEZ, CA 94553
Pediatrics (Adolescent Medicine)
200 MUIR RD
MARTINEZ, CA 94553
Internal Medicine
200 MUIR RD
MARTINEZ, CA 94553
Radiology (Diagnostic Radiology)
200 MUIR RD
MARTINEZ, CA 94553
Pediatrics
200 MUIR RD
MARTINEZ, CA 94553
Dermatology
200 MUIR RD
MARTINEZ, CA 94553

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1811045222, enumerated as an "individual" on January 08, 2007.

The provider is located at 200 MUIR RD MARTINEZ, CA 94553 and the phone number is (925) 372-1532.

Optometrist with taxonomy code 152W00000X.