DENNY EYE AND LASER CENTER
NPI 1669599155
Ophthalmology in San Francisco, CA

NPI Status: Active since March 22, 2007

Contact Information

711 VAN NESS AVE STE 300
SAN FRANCISCO, CA
ZIP 94102
Phone: (415) 567-8200

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  • Organization
  • Ophthalmology

About DENNY EYE AND LASER CENTER

This page provides the complete NPI Profile along with additional information for Denny Eye And Laser Center, a provider established in San Francisco, California operating as a Ophthalmology. The healthcare provider is registered in the NPI registry with number 1669599155 assigned on March 2007. The practitioner's primary taxonomy code is 207W00000X with license number G44848 (CA). 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. Kevin John Denny M.d. (Owner Medical Provider)

NPI
1669599155
Provider Name
DENNY EYE AND LASER CENTER
Entity Type
Organization
Location Address
711 VAN NESS AVE STE 300 SAN FRANCISCO, CA 94102
Location Phone
(415) 567-8200
Mailing Address
2201 WEBSTER STREET SAN FRANCISCO, CA 94115
Mailing Phone
(415) 567-8200
Mailing Fax
Is Sole Proprietor?
No
Is Organization Subpart?
No
Enumeration Date
03-22-2007
Last Update Date
09-22-2025
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Ophthalmologists like Denny Eye And Laser Center 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.

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

Ophthalmology

Taxonomy Code
207W00000X
Type
Allopathic & Osteopathic Physicians
License No.
G44848
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.

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. KEVIN JOHN DENNY M.D.

Authorized Official Title
OWNER MEDICAL PROVIDER
Authorized Official Phone
(415) 567-8200

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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 1669599155, we treat the final digit (5) 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 65. The final step is to find the difference between that total and the next multiple of ten (70 - 65 = 5).

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
6
Doubled → 12 → 1 + 2
Pos 4
9
Unchanged
Pos 5
5
Doubled → 10 → 1 + 0
Pos 6
9
Unchanged
Pos 7
9
Doubled → 18 → 1 + 8
Pos 8
1
Unchanged
Pos 9
5
Doubled → 10 → 1 + 0
Check
5
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 6 → 12 → 3 5 → 10 → 1 9 → 18 → 9 5 → 10 → 1

Step 2: Add all digits plus the NPI constant

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

2 + 6 + 1 + 2 + 9 + 1 + 0 + 9 + 1 + 8 + 1 + 1 + 0 + 24 = 65

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

The next multiple of ten after 65 is 70. The difference is the calculated check digit.

70 - 65 = 5
This NPI is valid
The calculated check digit is 5, which matches the last digit of 1669599155.

Other Providers at the Same Location


The following 7 providers are registered at the same or a nearby location.

Ophthalmology
711 VAN NESS AVE STE 300
SAN FRANCISCO, CA 94102
Optometrist
711 VAN NESS AVE STE 300
SAN FRANCISCO, CA 94102
Ophthalmology
711 VAN NESS AVE STE 300
SAN FRANCISCO, CA 94102
Optometrist
711 VAN NESS AVE STE 300
SAN FRANCISCO, CA 94102
Optometrist
711 VAN NESS AVE STE 300
SAN FRANCISCO, CA 94102
Ophthalmology
711 VAN NESS AVE STE 300
SAN FRANCISCO, CA 94102
Ophthalmology
711 VAN NESS AVE STE 300
SAN FRANCISCO, CA 94102

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1669599155, enumerated as an "organization" on March 22, 2007.

The provider is located at 711 VAN NESS AVE STE 300 SAN FRANCISCO, CA 94102 and the phone number is (415) 567-8200.

Ophthalmology with taxonomy code 207W00000X.