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WILLIAM F COX MD PA
NPI 1447876586
Internal Medicine in Dallas, TX

Active since June 24, 2020
8220 WALNUT HILL LN STE 500, DALLAS, TX 75231(469) 450-7694(972) 954-7712 Get Directions Write a Review

NPPES record last updated: June 24, 2020. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About William F Cox Md Pa NPPES

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

WILLIAM F COX MD PA (NPI 1447876586) is a healthcare organization registered as an internal medicine in Dallas, Texas and active in the NPI registry since June 2020. The organization lists William F Cox, Physician/owner, as its authorized official.

NPPES Registry Identity

NPI1447876586
Entity TypeOrganization
Primary Taxonomy207R00000X
Legal Business NameWILLIAM F COX MD PA
Location Address8220 WALNUT HILL LN STE 500Dallas, TX 75231-4414
Mailing Address8220 Walnut Hill Ln Ste 500Dallas, TX 75231-4414 · (469) 450-7694 · Fax (972) 954-7712
Phone(469) 450-7694
Fax(972) 954-7712
Organization SubpartNo
Authorized OfficialWilliam F CoxPhysician/owner · (469) 450-7694
Enumeration DateJune 24, 2020
NPPES CertifiedJune 24, 2020
✔ NPI 1447876586 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
8220 WALNUT HILL LN STE 500, Dallas, TX 75231
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Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE 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)

William F Cox Md Pa is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 1 clinician reassigns Medicare billing to William F Cox MD PA, which bills Medicare for the services this clinician delivers.

Clinician (1)

William Cox, M.D.
Internal Medicine
NPI 1922047448
8230 WALNUT HILL LN SUITE 804
Dallas, TX 75231
(214) 363-6217
✔ PECOS✔ Accepts MedicareSame address

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 William F Cox MD PA's NPI number?

The NPI number for William F Cox MD PA is 1447876586. It was assigned to this organization in the NPPES registry on June 24, 2020.

Where is William F Cox MD PA located?

William F Cox MD PA is located at 8220 Walnut Hill Ln Ste 500, Dallas, TX 75231. The listed phone number is (469) 450-7694.

What is William F Cox MD PA's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is William F Cox MD PA enrolled in Medicare?

Yes. William F Cox MD PA is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through William F Cox MD PA?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Internal Medicine) reassigns their Medicare billing to William F Cox MD PA. 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. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for William F Cox MD PA was last updated on June 24, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 years 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.