FRANK STEPHEN KOHL
NPI 1649692914
Ophthalmology in El Cajon, CA

NPI Status: Active since January 06, 2014

Contact Information

2397 CERRO SERENO
EL CAJON, CA
ZIP 92019
Phone: (619) 820-5842
Fax: (619) 447-5990

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  • Individual
  • Male
  • Ophthalmology

About FRANK KOHL

This page provides the complete NPI Profile along with additional information for Frank Kohl, a provider established in El Cajon, California with a medical specialization in Ophthalmology. The healthcare provider is registered in the NPI registry with number 1649692914 assigned on January 2014. The practitioner's primary taxonomy code is 207W00000X with license number G21617 (CA). The provider is registered as an individual and his NPI record was last updated 12 years ago.

NPI
1649692914
Provider Name
FRANK STEPHEN KOHL
Gender
Male
Entity Type
Individual
Location Address
2397 CERRO SERENO EL CAJON, CA 92019
Location Phone
(619) 820-5842
Location Fax
(619) 447-5990
Mailing Address
2397 CERRO SERENO EL CAJON, CA 92019
Mailing Phone
(619) 820-5842
Mailing Fax
(619) 447-5990
Is Sole Proprietor?
Yes
Enumeration Date
01-06-2014
Last Update Date
01-06-2014
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Ophthalmologists like Frank Kohl specialize in diagnosing and treating eye conditions. They may perform surgeries to correct vision issues or prevent vision loss due to diseases like glaucoma. Additionally, they can provide eyeglasses, prescribe contact lenses, and offer other vision-related services.

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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

Ophthalmology

Taxonomy Code
207W00000X
Type
Allopathic & Osteopathic Physicians
License No.
G21617
License State
CA
Taxonomy Description
An ophthalmologist has the knowledge and professional skills needed to provide comprehensive eye and vision care. Ophthalmologists are medically trained to diagnose, monitor and medically or surgically treat all ocular and visual disorders. This includes problems affecting the eye and its component structures, the eyelids, the orbit and the visual pathways. In so doing, an ophthalmologist prescribes vision services, including glasses and contact lenses.

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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 1649692914, we treat the final digit (4) 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 76. The final step is to find the difference between that total and the next multiple of ten (80 - 76 = 4).

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

Step 2: Add all digits plus the NPI constant

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

2 + 6 + 8 + 9 + 1 + 2 + 9 + 4 + 9 + 2 + 24 = 76

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

The next multiple of ten after 76 is 80. The difference is the calculated check digit.

80 - 76 = 4
This NPI is valid
The calculated check digit is 4, which matches the last digit of 1649692914.

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1649692914, enumerated as an "individual" on January 06, 2014.

The provider is located at 2397 CERRO SERENO EL CAJON, CA 92019 and the phone number is (619) 820-5842.

Ophthalmology with taxonomy code 207W00000X.