STONE OAK OPHTHALMOLOGY CENTER LLC
NPI 1609146356
Ophthalmology in San Antonio, TX

NPI Status: Active since January 11, 2012

Contact Information

18586 SIGMA RD
SAN ANTONIO, TX
ZIP 78258
Phone: (210) 490-6759

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  • Organization
  • Ophthalmology

About STONE OAK OPHTHALMOLOGY CENTER LLC

This page provides the complete NPI Profile along with additional information for Stone Oak Ophthalmology Center Llc, a provider established in San Antonio, Texas operating as a Ophthalmology. The healthcare provider is registered in the NPI registry with number 1609146356 assigned on January 2012. The practitioner's primary taxonomy code is 207W00000X with license number P1609 (TX). The provider is registered as an organization and their NPI record was last updated April 2026. 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 provider's . The authorized official of this NPI record is Allison Paige Young M.d. (Owner)

NPI
1609146356
Provider Legal Name
STONE OAK OPHTHALMOLOGY CENTER LLC
Other Organization Name
Other Name Type
(6)
Entity Type
Organization
Location Address
18586 SIGMA RD SAN ANTONIO, TX 78258
Location Phone
(210) 490-6759
Mailing Address
18586 SIGMA RD SAN ANTONIO, TX 78258
Is Sole Proprietor?
No
Is Organization Subpart?
No
Enumeration Date
01-11-2012
Last Update Date
04-28-2026
Code Navigator

Ophthalmologists like Stone Oak Ophthalmology Center Llc 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.
P1609
License State
TX
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

ALLISON PAIGE YOUNG M.D.

Authorized Official Title
OWNER
Authorized Official Phone
(210) 490-6759

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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 1609146356, we treat the final digit (6) 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 54. The final step is to find the difference between that total and the next multiple of ten (60 - 54 = 6).

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
0
Doubled → 0
Pos 4
9
Unchanged
Pos 5
1
Doubled → 2
Pos 6
4
Unchanged
Pos 7
6
Doubled → 12 → 1 + 2
Pos 8
3
Unchanged
Pos 9
5
Doubled → 10 → 1 + 0
Check
6
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 1 → 2 6 → 12 → 3 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 + 0 + 9 + 2 + 4 + 1 + 2 + 3 + 1 + 0 + 24 = 54

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

The next multiple of ten after 54 is 60. The difference is the calculated check digit.

60 - 54 = 6
This NPI is valid
The calculated check digit is 6, which matches the last digit of 1609146356.

Other Providers at the Same Location


The following 3 providers are registered at the same or a nearby location.

Ophthalmology
18586 SIGMA RD
SAN ANTONIO, TX 78258
Ophthalmology
18586 SIGMA RD
SAN ANTONIO, TX 78258
Ophthalmology
18586 SIGMA RD
SAN ANTONIO, TX 78258

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1609146356, enumerated as an "organization" on January 11, 2012.

The provider is located at 18586 SIGMA RD SAN ANTONIO, TX 78258 and the phone number is (210) 490-6759.

Ophthalmology with taxonomy code 207W00000X.