GARY LLOYD MASSAD MD
NPI 1851509236
Preventive Medicine - Occupational Medicine in Oklahoma City, OK

NPI Status: Active since May 18, 2007

Contact Information

7501 N COUNTRY CLUB DRIVE
OKLAHOMA CITY, OK
ZIP 73116
Phone: (405) 843-3193
Fax: (405) 843-1857

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  • Individual
  • Male
  • Preventive Medicine
  • Occupational Medicine

About GARY MASSAD

This page provides the complete NPI Profile along with additional information for Gary Massad, a provider established in Oklahoma City, Oklahoma with a medical specialization in Preventive Medicine, focusing in occupational medicine . The healthcare provider is registered in the NPI registry with number 1851509236 assigned on May 2007. The practitioner's primary taxonomy code is 2083X0100X with license number 10889 (OK). The provider is registered as an individual and his NPI record was last updated 19 years ago.

NPI
1851509236
Provider Name
GARY LLOYD MASSAD MD
Gender
Male
Entity Type
Individual
Location Address
7501 N COUNTRY CLUB DRIVE OKLAHOMA CITY, OK 73116
Location Phone
(405) 843-3193
Location Fax
(405) 843-1857
Mailing Address
PO BOX 21600 OKLAHOMA CITY, OK 73156
Mailing Phone
(405) 843-3193
Mailing Fax
(405) 843-1857
Is Sole Proprietor?
No
Enumeration Date
05-18-2007
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

Preventive Medicine Occupational Medicine

Taxonomy Code
2083X0100X
Type
Allopathic & Osteopathic Physicians
License No.
10889
License State
OK
Taxonomy Description
Occupational medicine focuses on the health of workers, including the ability to perform work; the physical, chemical, biological, and social environments of the workplace; and the health outcomes of environmental exposures. Practitioners in this field address the promotion of health in the work place, and the prevention and management of occupational and environmental injury, illness, and disability.

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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 1851509236, 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
8
Unchanged
Pos 3
5
Doubled → 10 → 1 + 0
Pos 4
1
Unchanged
Pos 5
5
Doubled → 10 → 1 + 0
Pos 6
0
Unchanged
Pos 7
9
Doubled → 18 → 1 + 8
Pos 8
2
Unchanged
Pos 9
3
Doubled → 6
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 5 → 10 → 1 5 → 10 → 1 9 → 18 → 9 3 → 6

Step 2: Add all digits plus the NPI constant

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

2 + 8 + 1 + 0 + 1 + 1 + 0 + 0 + 1 + 8 + 2 + 6 + 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 1851509236.

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1851509236, enumerated as an "individual" on May 18, 2007.

The provider is located at 7501 N COUNTRY CLUB DRIVE OKLAHOMA CITY, OK 73116 and the phone number is (405) 843-3193.

Preventive Medicine with taxonomy code 2083X0100X and a focus in Occupational Medicine.