TERRELL HILLS DENTAL
NPI 1841837598
Clinic/Center - Dental in San Antonio, TX

NPI Status: Active since December 02, 2019

Contact Information

2311 HARRY WURZBACH RD
SAN ANTONIO, TX
ZIP 78209
Phone: (210) 824-3531
Fax: (210) 824-0068

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  • Organization
  • Clinic/Center
  • Dental
  • CLIA Number: 45D1029304
  • CLIA Cert. Type: Other
  • CLIA Exp. Date: 08-12-2026

About TERRELL HILLS DENTAL

This page provides the complete NPI Profile along with additional information for Terrell Hills Dental, a provider established in San Antonio, Texas operating as a Clinic/center, focusing in dental . The healthcare provider is registered in the NPI registry with number 1841837598 assigned on December 2019. The practitioner's primary taxonomy code is 261QD0000X. The provider is registered as an organization and their NPI record was last updated 7 years ago. The authorized official of this NPI record is Dr. Humam Al Najjar Dds (Owner)

NPI
1841837598
Provider Name
TERRELL HILLS DENTAL
Entity Type
Organization
Location Address
2311 HARRY WURZBACH RD SAN ANTONIO, TX 78209
Location Phone
(210) 824-3531
Location Fax
(210) 824-0068
Mailing Address
2311 HARRY WURZBACH RD SAN ANTONIO, TX 78209
Mailing Phone
(210) 824-3531
Mailing Fax
(210) 824-0068
Is Sole Proprietor?
No
Is Organization Subpart?
No
Enumeration Date
12-02-2019
Last Update Date
12-02-2019
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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

Clinic/Center Dental

Taxonomy Code
261QD0000X
Type
Ambulatory Health Care Facilities

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. HUMAM AL NAJJAR DDS

Authorized Official Title
OWNER
Authorized Official Phone
(210) 824-3531

CLIA Information

The Clinical Laboratory Improvement Amendments (CLIA) of 1988 applies to facilities or sites that test human specimens for health assessment or to diagnose, prevent, or treat disease. The CLIA Program sets standards for clinical laboratory testing and issues certificates. The NPI / CLIA crosswalk information for this NPI number is:

CLIA Number
45D1029304
Facility Type
Other
Certificate Effective Date
August 13, 2024
Certificate Expiration Date
August 12, 2026
Laboratory Director
WILLIAM K. KNUPP III
Certificate Type
Certificate of Waiver
Certificate Type Description
This CLIA certificate is issued to Terrell Hills Dental to perform only waived tests. CLIA defines waived tests as simple tests with a low risk for an incorrect result. Waived tests include certain tests listed in CLIA regulations, tests cleared by the FDA for home use and tests approved by the FDA for waived status and that meet CLIA waiver criteria.

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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 1841837598, we treat the final digit (8) 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 72. The final step is to find the difference between that total and the next multiple of ten (80 - 72 = 8).

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
4
Doubled → 8
Pos 4
1
Unchanged
Pos 5
8
Doubled → 16 → 1 + 6
Pos 6
3
Unchanged
Pos 7
7
Doubled → 14 → 1 + 4
Pos 8
5
Unchanged
Pos 9
9
Doubled → 18 → 1 + 8
Check
8
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 4 → 8 8 → 16 → 7 7 → 14 → 5 9 → 18 → 9

Step 2: Add all digits plus the NPI constant

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

2 + 8 + 8 + 1 + 1 + 6 + 3 + 1 + 4 + 5 + 1 + 8 + 24 = 72

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

The next multiple of ten after 72 is 80. The difference is the calculated check digit.

80 - 72 = 8
This NPI is valid
The calculated check digit is 8, which matches the last digit of 1841837598.

Other Providers at the Same Location


The following 4 providers are registered at the same or a nearby location.

Dentist (General Practice)
2311 HARRY WURZBACH RD
SAN ANTONIO, TX 78209
Dentist (General Practice)
2311 HARRY WURZBACH RD
SAN ANTONIO, TX 78209
Dentist
2311 HARRY WURZBACH RD
SAN ANTONIO, TX 78209
Dentist (General Practice)
2311 HARRY WURZBACH RD
SAN ANTONIO, TX 78209

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1841837598, enumerated as an "organization" on December 02, 2019.

The provider is located at 2311 HARRY WURZBACH RD SAN ANTONIO, TX 78209 and the phone number is (210) 824-3531.

Clinic/Center with taxonomy code 261QD0000X and a focus in Dental.