DR. CHARLES HOWARD BAILEY O.D.
NPI 1407993017
Optometrist - Corneal and Contact Management in Berkeley, CA

NPI Status: Active since January 31, 2007

Contact Information

360 MINOR HALL
BERKELEY, CA
ZIP 94720
Phone: (510) 642-5365
Fax: (510) 642-8012

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  • Individual
  • Male
  • Optometrist
  • Corneal and Contact Management

About CHARLES BAILEY

This page provides the complete NPI Profile along with additional information for Charles Bailey, a provider established in Berkeley, California with a medical specialization in Optometrist, focusing in corneal and contact management . The healthcare provider is registered in the NPI registry with number 1407993017 assigned on January 2007. The practitioner's primary taxonomy code is 152WC0802X with license number 07410TPG (CA). The provider is registered as an individual and his NPI record was last updated 19 years ago.

NPI
1407993017
Provider Name
DR. CHARLES HOWARD BAILEY O.D.
Gender
Male
Entity Type
Individual
Location Address
360 MINOR HALL BERKELEY, CA 94720
Location Phone
(510) 642-5365
Location Fax
(510) 642-8012
Mailing Address
360 MINOR HALL BERKELEY, CA 94720
Mailing Phone
(510) 642-5365
Mailing Fax
(510) 642-8012
Is Sole Proprietor?
No
Enumeration Date
01-31-2007
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 Corneal and Contact Management

Taxonomy Code
152WC0802X
Type
Eye and Vision Services Providers
License No.
07410TPG
License State
CA
Taxonomy Description
The professional activities performed by an Optometrist related to the fitting of contact lenses to an eye, ongoing evaluation of the cornea's ability to sustain successful contact lens wear, and treatment of any external eye or corneal condition which can affect contact lens wear.

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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 1407993017, 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
4
Unchanged
Pos 3
0
Doubled → 0
Pos 4
7
Unchanged
Pos 5
9
Doubled → 18 → 1 + 8
Pos 6
9
Unchanged
Pos 7
3
Doubled → 6
Pos 8
0
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 0 → 0 9 → 18 → 9 3 → 6 1 → 2

Step 2: Add all digits plus the NPI constant

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

2 + 4 + 0 + 7 + 1 + 8 + 9 + 6 + 0 + 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 1407993017.

Other Providers at the Same Location


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

Optometrist (Low Vision Rehabilitation)
360 MINOR HALL, UNIVERSITY OF CALIFORNIA
BERKELEY, CA 94720

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1407993017, enumerated as an "individual" on January 31, 2007.

The provider is located at 360 MINOR HALL BERKELEY, CA 94720 and the phone number is (510) 642-5365.

Optometrist with taxonomy code 152WC0802X and a focus in Corneal and Contact Management.