GARY MASON, MD PA
NPI 1194938357
Ophthalmology in Houston, TX

NPI Status: Active since May 07, 2007

Contact Information

7777 SOUTHWEST FWY
SUITE 934
HOUSTON, TX
ZIP 77074
Phone: (713) 988-2020
Fax: (713) 988-2053

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  • Organization
  • Ophthalmology

About GARY MASON, MD PA

This page provides the complete NPI Profile along with additional information for Gary Mason, Md Pa, a provider established in Houston, Texas operating as a Ophthalmology. The healthcare provider is registered in the NPI registry with number 1194938357 assigned on May 2007. The practitioner's primary taxonomy code is 207W00000X with license number F2344 (TX). The provider is registered as an organization and their NPI record was last updated 18 years 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. Gary Mason Md (President)

NPI
1194938357
Provider Name
GARY MASON, MD PA
Entity Type
Organization
Location Address
7777 SOUTHWEST FWY SUITE 934 HOUSTON, TX 77074
Location Phone
(713) 988-2020
Location Fax
(713) 988-2053
Mailing Address
7777 SOUTHWEST FWY SUITE 934 HOUSTON, TX 77074
Mailing Phone
(713) 988-2020
Mailing Fax
(713) 988-2053
Is Sole Proprietor?
No
Is Organization Subpart?
No
Enumeration Date
05-07-2007
Last Update Date
07-15-2008
Code Navigator

Ophthalmologists like Gary Mason, Md Pa 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.
F2344
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

DR. GARY MASON MD

Authorized Official Title
PRESIDENT
Authorized Official Phone
(713) 988-2020

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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 1194938357, 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
1
Unchanged
Pos 3
9
Doubled → 18 → 1 + 8
Pos 4
4
Unchanged
Pos 5
9
Doubled → 18 → 1 + 8
Pos 6
3
Unchanged
Pos 7
8
Doubled → 16 → 1 + 6
Pos 8
3
Unchanged
Pos 9
5
Doubled → 10 → 1 + 0
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 9 → 18 → 9 9 → 18 → 9 8 → 16 → 7 5 → 10 → 1

Step 2: Add all digits plus the NPI constant

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

2 + 1 + 1 + 8 + 4 + 1 + 8 + 3 + 1 + 6 + 3 + 1 + 0 + 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 1194938357.

Other Providers at the Same Location


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

Internal Medicine (Gastroenterology)
7777 SOUTHWEST FWY, SUITE 762
HOUSTON, TX 77074
Ophthalmology
7777 SOUTHWEST FWY, SUITE 934
HOUSTON, TX 77074
Internal Medicine
7777 SOUTHWEST FWY, SUITE 620
HOUSTON, TX 77074
Internal Medicine
7777 SOUTHWEST FWY, SUITE 620
HOUSTON, TX 77074
Urology
7777 SOUTHWEST FWY, # 1032
HOUSTON, TX 77074
Urology
7777 SOUTHWEST FWY, # 1032
HOUSTON, TX 77074
Urology
7777 SOUTHWEST FWY, # 1032
HOUSTON, TX 77074
Pediatrics (Neonatal-Perinatal Medicine)
7777 SOUTHWEST FWY, SUITE 310
HOUSTON, TX 77074
Physician Assistant (Surgical)
7777 SOUTHWEST FWY, SUITE 432
HOUSTON, TX 77074
Pediatrics (Neonatal-Perinatal Medicine)
7777 SOUTHWEST FWY, SUITE 310
HOUSTON, TX 77074
Internal Medicine (Cardiovascular Disease)
7777 SOUTHWEST FWY, SUITE 420
HOUSTON, TX 77074
Psychiatry & Neurology (Neurology)
7777 SOUTHWEST FWY, SUITE 900
HOUSTON, TX 77074
Psychiatry & Neurology (Neurology)
7777 SOUTHWEST FWY, SUITE 900
HOUSTON, TX 77074
Psychiatry & Neurology (Neurology)
7777 SOUTHWEST FWY, SUITE 900
HOUSTON, TX 77074
Internal Medicine (Gastroenterology)
7777 SOUTHWEST FWY, STE 544
HOUSTON, TX 77074
Internal Medicine (Cardiovascular Disease)
7777 SOUTHWEST FWY, STE 544
HOUSTON, TX 77074
Internal Medicine (Medical Oncology)
7777 SOUTHWEST FWY, SUITE1004
HOUSTON, TX 77074
Internal Medicine (Infectious Disease)
7777 SOUTHWEST FWY, 740
HOUSTON, TX 77074
Internal Medicine (Infectious Disease)
7777 SOUTHWEST FWY, 740
HOUSTON, TX 77074
Specialist
7777 SOUTHWEST FWY, STE 514
HOUSTON, TX 77074

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1194938357, enumerated as an "organization" on May 07, 2007.

The provider is located at 7777 SOUTHWEST FWY SUITE 934 HOUSTON, TX 77074 and the phone number is (713) 988-2020.

Ophthalmology with taxonomy code 207W00000X.