RHEUMATOLOGY ASSOCIATES & SUBSIDIARY
NPI 1659371227
Internal Medicine - Rheumatology in Dallas, TX
NPI Status: Active since July 26, 2005
Contact Information
8144 WALNUT HILL LN STE 800
DALLAS, TX
ZIP 75231
Phone: (214) 540-0700
Fax: (214) 540-0701
Some details in this NPI profile have been updated in the NPI registry within the last 30 days.
- Organization
- Internal Medicine
- Rheumatology
- CLIA Number: 45D0477156
- CLIA Cert. Type: Physician Office
- CLIA Exp. Date: 03-19-2027
About RHEUMATOLOGY ASSOCIATES & SUBSIDIARY
This page provides the complete NPI Profile along with additional information for Rheumatology Associates & Subsidiary, an internist established in Dallas, Texas operating as a Internal Medicine, focusing in rheumatology . The healthcare provider is registered in the NPI registry with number 1659371227 assigned on July 2005. The practitioner's primary taxonomy code is 207RR0500X. The provider is registered as an organization and their NPI record was last updated June 2026. Rheumatology Associates & Subsidiary operates as a Multi-Specialty Group with one or more individual practitioners, who practice different areas of specialization. The authorized official of this NPI record is Gregory Chesley Chief Executive Off (Ceo)
- NPI
- 1659371227
- Provider Name
- RHEUMATOLOGY ASSOCIATES & SUBSIDIARY
- Entity Type
- Organization
- Location Address
- 8144 WALNUT HILL LN STE 800 DALLAS, TX 75231
- Location Phone
- (214) 540-0700
- Location Fax
- (214) 540-0701
- Mailing Address
- 8144 WALNUT HILL LN STE 800 DALLAS, TX 75231
- Mailing Phone
- (214) 540-0700
- Mailing Fax
- (214) 540-0701
- Is Sole Proprietor?
- No
- Is Organization Subpart?
- No
- Enumeration Date
- 07-26-2005
- Last Update Date
- 06-29-2026
- Code Navigator
An internist like Rheumatology Associates & Subsidiary is a physician who has completed an internal medicine residency and is board-certified or board-eligible in an internist specialty. Internists are trained to care for adults of all ages for many different medical conditions. An internist typically monitors chronic physical conditions, identifies acute diseases, provides family planning, provides counseling about wellness and disease prevention, etc.
Location Map
Secondary Locations
- 7999 W Virginia Dr Ste B
Dallas, TX 75237
(214) 540-0700 - 4370 Medical Arts Dr Ste 350
Flower Mound, TX 75028
(214) 540-0700 - 2504 Ridge Rd Ste 101
Rockwall, TX 75087
(214) 540-0700 - 8221 Mid Cities Blvd Ste 200
North Richland Hills, TX 76182
(214) 540-0700 - 2900 N Interstate 35 Ste 409
Denton, TX 76201
(214) 540-0700 - 2504 Ridge Rd Ste 101
Rockwall, TX 75087
(214) 540-0700 - 2021 N MacArthur Blvd Ste 515
Irving, TX 75061
(214) 540-0700 - 4708 Alliance Blvd Ste 685
Plano, TX 75093
(214) 540-0700 - 4461 Coit Rd Ste 350
Frisco, TX 75035
(214) 540-0700 - 1001 N Waldrop Dr Ste 816
Arlington, TX 76012
(214) 540-0700 - 1643 Lancaster Dr Ste 202
Grapevine, TX 76051
(214) 540-0700
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
Internal Medicine Rheumatology
- Taxonomy Code
- 207RR0500X
- Type
- Allopathic & Osteopathic Physicians
- Taxonomy Description
- An internist who treats diseases of joints, muscle, bones and tendons. This specialist diagnoses and treats arthritis, back pain, muscle strains, common athletic injuries and collagen diseases.
Group Taxonomy 193200000X MULTI-SPECIALTY GROUP
This provider is a business group of one or more individual practitioners, who practice with different areas of specialization.
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
- 45D0477156
- Facility Type
- Physician Office
- Certificate Effective Date
- March 20, 2025
- Certificate Expiration Date
- March 19, 2027
- Laboratory Director
- DR. IRENE SHU
- Certificate Type
- Certificate of Accreditation
- Certificate Type Description
- This is a CLIA certificate is issued to Rheumatology Associates & Subsidiary on the basis of the laboratory's accreditation by an accreditation organization approved by CMS. This type of certificate is issued to a laboratories tha perform nonwaived (moderate and/or high complexity) testing.
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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 1659371227, 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.
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.
Step 2: Add all digits plus the NPI constant
Add the transformed values, the unchanged digits, and the constant 24.
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.
Other Providers at the Same Location
The following 13 providers are registered at the same or a nearby location.
DALLAS, TX 75231
DALLAS, TX 75231
DALLAS, TX 75231
DALLAS, TX 75231
DALLAS, TX 75231
DALLAS, TX 75231
DALLAS, TX 75231
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1659371227, enumerated as an "organization" on July 26, 2005.
The provider is located at 8144 WALNUT HILL LN STE 800 DALLAS, TX 75231 and the phone number is (214) 540-0700.
Internal Medicine with taxonomy code 207RR0500X and a focus in Rheumatology.
