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RHEUMATOLOGY ASSOCIATES & SUBSIDIARY
NPI 1659371227
Internal Medicine - Rheumatology in Dallas, TX

Active since July 26, 2005
8144 WALNUT HILL LN STE 800, DALLAS, TX 75231(214) 540-0700(214) 540-0701 Get Directions Write a Review

NPPES record last updated: June 29, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Apr 15, 2026, Mar 20, 2026, Nov 21, 2025 and 2 more (5 updates tracked since 2020).

About Rheumatology Associates & Subsidiary NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

RHEUMATOLOGY ASSOCIATES & SUBSIDIARY (NPI 1659371227) is a healthcare organization registered as a rheumatology in Dallas, Texas and active in the NPI registry since July 2005. The organization maintains 10 additional practice locations and lists Gregory Chesley, Ceo, as its authorized official.

NPPES Registry Identity

NPI1659371227
Entity TypeOrganization
Primary Taxonomy207RR0500X
Legal Business NameRHEUMATOLOGY ASSOCIATES & SUBSIDIARY
Location Address8144 WALNUT HILL LN STE 800Dallas, TX 75231-4345
Mailing Address8144 Walnut Hill Ln Ste 800Dallas, TX 75231-4345 · (214) 540-0700 · Fax (214) 540-0701
Phone(214) 540-0700
Fax(214) 540-0701
Organization SubpartNo
Authorized OfficialGregory ChesleyCeo · (214) 540-0700
Enumeration DateJuly 26, 2005
Last NPPES UpdateJune 29, 20265 updates tracked since enumeration
NPPES CertifiedJune 29, 2026
✔ NPI 1659371227 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · RheumatologyAllopathic & Osteopathic Physicians
Taxonomy Code207RR0500X
Definition
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.
8144 WALNUT HILL LN STE 800, Dallas, TX 75231
Open in Google Maps ↗

Secondary Practice Locations 10

Location 11001 N Waldrop Dr Ste 816Arlington, TX 76012-4715 · Phone (214) 540-0700 · Fax (214) 540-0701
Location 24461 Coit Rd Ste 350Frisco, TX 75035-0521 · Phone (214) 540-0700 · Fax (214) 540-0701
Location 34370 Medical Arts Dr Ste 350Flower Mound, TX 75028-1712 · Phone (214) 540-0700 · Fax (214) 540-0701
Location 44708 Alliance Blvd Ste 685Plano, TX 75093-5321 · Phone (214) 540-0700 · Fax (214) 540-0701
Location 57999 W Virginia Dr Ste BDallas, TX 75237-3845 · Phone (214) 540-0700 · Fax (214) 540-0701
Location 68221 Mid Cities Blvd Ste 200North Richland Hills, TX 76182-4726 · Phone (214) 540-0700 · Fax (214) 540-0701
Location 72900 N Interstate 35 Ste 409Denton, TX 76201-5148 · Phone (214) 540-0700 · Fax (214) 540-0701
Location 82504 Ridge Rd Ste 101Rockwall, TX 75087-2570 · Phone (214) 540-0700 · Fax (214) 540-0701
Location 92021 N MacArthur Blvd Ste 515Irving, TX 75061-2217 · Phone (214) 540-0700 · Fax (214) 540-0701
Location 101643 Lancaster Dr Ste 202Grapevine, TX 76051-3593 · Phone (214) 540-0700 · Fax (214) 540-0701

Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Rheumatology Associates & Subsidiary is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

32

Medicare enrollment records show 32 clinicians reassign Medicare billing to Rheumatology Associates & Subsidiary, which bills Medicare for the services they deliver. Of these, 18 practice at this address and 23 within 10 miles. Listed here are the 20 practicing nearest to this location.

Clinicians by Medicare Specialty 3

Rheumatology26
Nurse Practitioner5
Internal Medicine1

Nearest to this location (20)

See all 32
Stanley Cohen, M.D.
Rheumatology
NPI 1366441958
8144 WALNUT HILL LN STE 800
Dallas, TX 75231
(214) 540-0700
✔ PECOS✔ Accepts MedicareSame address
Imran Iqbal, M.D.
Rheumatology
NPI 1588663280
8144 WALNUT HILL LN SUITE 800
Dallas, TX 75231
(214) 540-0700
✔ PECOS✔ Accepts MedicareSame address
Robert Jenkins, M.D., PHD.
Rheumatology
NPI 1518966100
8144 WALNUT HILL LN STE 800
Dallas, TX 75231
(214) 540-0700
✔ PECOS✔ Accepts MedicareSame address
Ryan Kavilaveettil, DO
Rheumatology
NPI 1134616683
8144 WALNUT HILL LN STE 800
Dallas, TX 75231
(214) 540-0623
✔ PECOS✔ Accepts MedicareSame address
Talat Kheshgi, M.D.
Rheumatology
NPI 1053310755
8144 WALNUT HILL LN STE 800
Dallas, TX 75231
(214) 540-0700
✔ PECOS✔ Accepts MedicareSame address
Sharad Lakhanpal, M.D.
Internal Medicine
NPI 1720087414
8144 WALNUT HILL LN SUITE 800
Dallas, TX 75231
(214) 540-0700
✔ PECOS✔ Accepts MedicareSame address
Neena Mathews, APN/NURSE PRACTITION
Nurse Practitioner
NPI 1013419621
8144 WALNUT HILL LN STE 800
Dallas, TX 75231
(214) 540-0700
✔ PECOS✔ Accepts MedicareSame address
Cary Roy, MD
Rheumatology
NPI 1912585258
8144 WALNUT HILL LN STE 800
Dallas, TX 75231
(214) 540-0700
✔ PECOSSame address
Christopher Wright, MD
Rheumatology
NPI 1356571087
8144 WALNUT HILL LN STE 800
Dallas, TX 75231
(214) 540-0700
✔ PECOS✔ Accepts MedicareSame address
Anahit Zeynalyan, MD
Rheumatology
NPI 1285196253
8144 WALNUT HILL LN STE 800
Dallas, TX 75231
(214) 540-0700
✔ PECOS✔ Accepts MedicareSame address
Susan Chrostowski, RN, MS, NP-C
Nurse Practitioner
NPI 1851464614
8144 WALNUT HILL LN SUITE 800
Dallas, TX 75231
(214) 540-0700
✔ PECOS✔ Accepts MedicareSame address
Giovanni Geslani, D.O.
Rheumatology
NPI 1962638858
8144 WALNUT HILL LN SUITE 800
Dallas, TX 75231
(214) 540-0700
✔ PECOS✔ Accepts MedicareSame address
Joanna Geslani, D.O.
Rheumatology
NPI 1124333703
8144 WALNUT HILL LN SUITE 800
Dallas, TX 75231
(214) 540-0700
✔ PECOS✔ Accepts MedicareSame address
Surbhi Gupta
Rheumatology
NPI 1154825867
8144 WALNUT HILL LN STE 800
Dallas, TX 75231
(214) 540-0623
✔ PECOS✔ Accepts MedicareSame address
Matthew Hogenmiller, M.D.
Rheumatology
NPI 1306866702
8144 WALNUT HILL LN. SUITE 800
Dallas, TX 75231
(214) 540-0700
✔ PECOS✔ Accepts MedicareSame address
Zoran Kurepa, M.D., PH.D.
Rheumatology
NPI 1154457224
8144 WALNUT HILL LN SUITE 800
Dallas, TX 75231
(214) 540-0700
✔ PECOS✔ Accepts MedicareSame address
Hazim Muhammad
Rheumatology
NPI 1356804405
8144 WALNUT HILL LN STE 800
Dallas, TX 75231
(214) 540-0700
✔ PECOS✔ Accepts MedicareSame address
Rachel Tiu, NURSE PRACTITIONER
Nurse Practitioner
NPI 1780268979
8144 WALNUT HILL LN STE 800
Dallas, TX 75231
(214) 540-0700
✔ PECOS✔ Accepts MedicareSame address
Margarita Fallena, MD
Rheumatology
NPI 1760686737
12740 HILLCREST RD STE 265
Dallas, TX 75230
(972) 513-1410
✔ PECOS✔ Accepts Medicare3.0 mi
Cathy Fernandez, FNPC
Nurse Practitioner
NPI 1184262370
12740 HILLCREST RD STE 265
Dallas, TX 75230
(972) 513-1410
✔ PECOS✔ Accepts Medicare3.0 mi
See all 32 clinicians

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Rheumatology Associates & Subsidiary's NPI number?

The NPI number for Rheumatology Associates & Subsidiary is 1659371227. It was assigned to this organization in the NPPES registry on July 26, 2005.

Where is Rheumatology Associates & Subsidiary located?

Rheumatology Associates & Subsidiary is located at 8144 Walnut Hill Ln Ste 800, Dallas, TX 75231. The listed phone number is (214) 540-0700.

What is Rheumatology Associates & Subsidiary's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Rheumatology, with taxonomy code 207RR0500X.

Is Rheumatology Associates & Subsidiary enrolled in Medicare?

Yes. Rheumatology Associates & Subsidiary is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Rheumatology Associates & Subsidiary?

According to the CMS Revalidation Reassignment List (October 2026 release), 32 clinicians in 3 Medicare specialties reassign their Medicare billing to Rheumatology Associates & Subsidiary. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. The largest specialties are Rheumatology (26), Nurse Practitioner (5) and Internal Medicine (1). Of these, 18 practice at this address and 23 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Rheumatology Associates & Subsidiary was last updated on June 29, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.