MR. DAVID L. MASSEY III CRT
NPI 1891961520
Respiratory Therapist, Certified in Houston, TX

NPI Status: Active since May 02, 2008

Contact Information

9494 KIRBY DR
HOUSTON, TX
ZIP 77054
Phone: (713) 741-0343
Fax: (713) 741-4139

NPI Profile Information
Primary Taxonomy
NPI Validation
Other Providers Same Location
Frequently Asked Questions

Individual
Male
Respiratory Therapist, Certified

About DAVID MASSEY

This page provides the complete NPI Profile along with additional information for David Massey, a provider established in Houston, Texas with a medical specialization in Respiratory Therapist, Certified. The healthcare provider is registered in the NPI registry with number 1891961520 assigned on May 2008. The practitioner's primary taxonomy code is 227800000X with license number 67911 (TX). The provider is registered as an individual and his NPI record was last updated 18 years ago.

NPI: 1891961520
Provider Name: MR. DAVID L. MASSEY III CRT
Gender: Male
Entity Type: Individual
Location Address: 9494 KIRBY DR HOUSTON, TX 77054
Location Phone: (713) 741-0343
Location Fax: (713) 741-4139
Mailing Address: 9494 KIRBY DR HOUSTON, TX 77054
Mailing Phone: (713) 741-0343
Mailing Fax: (713) 741-4139
Is Sole Proprietor?: Yes
Enumeration Date: 05-02-2008
Last Update Date: 05-02-2008
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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: Respiratory Therapist, Certified
Taxonomy Code: 227800000X
Type: Respiratory, Developmental, Rehabilitative and Restorative Service Providers
License No.: 67911
License State: TX
Taxonomy Description: A Certified Respiratory Therapist (CRT) is a an entry level therapist who has passed a standardized written examination administered by the National Board for Respiratory Care (NBRC). CRTs provide diagnostic testing, therapeutics, monitoring, rehabilitation, and education to patients with disorders of the cardiopulmonary system. They provide these respiratory care services in all health care facilities and in the home. A CRT is a graduate of an associate degree program approved by the Commission on Accreditation of Allied Health Educational Programs (CAAHEP) and where applicable, is licensed by the state and is practicing within the scope of the license.

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 1891961520, we treat the final digit (0) 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 70. The final step is to find the difference between that total and the next multiple of ten (70 - 70 = 0).

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

Doubled → 2

Pos 2

Unchanged

Pos 3

Doubled → 18 → 1 + 8

Pos 4

Unchanged

Pos 5

Doubled → 18 → 1 + 8

Pos 6

Unchanged

Pos 7

Doubled → 2

Pos 8

Unchanged

Pos 9

Doubled → 4

Check

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 1 → 2 2 → 4

Step 2: Add all digits plus the NPI constant

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

2 + 8 + 1 + 8 + 1 + 1 + 8 + 6 + 2 + 5 + 4 + 24 = 70

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

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

70 - 70 = 0

This NPI is valid

The calculated check digit is 0, which matches the last digit of 1891961520.