SAMUEL J LISTI & MARGARET A SOWADA
NPI 1417071903
Internal Medicine in Dallas, TX

Q: What is Samuel J Listi & Margaret A Sowada's NPI number?

The NPI number for Samuel J Listi & Margaret A Sowada is 1417071903. It was assigned to this organization in the NPPES registry on March 19, 2007.

Q: What is Samuel J Listi & Margaret A Sowada's specialty?

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

Active since March 19, 2007

5909 HARRY HINES BLVD, ST PAUL UNIVERSITY HOSPITAL, DALLAS, TX 75235(972) 247-8391 Get Directions Write a Review

NPPES record last updated: August 22, 2020. Verified against the NPPES registry weekly; last sync: October 18, 2026.

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About Samuel J Listi & Margaret A Sowada NPPES

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

SAMUEL J LISTI & MARGARET A SOWADA (NPI 1417071903) is a healthcare organization registered as an internal medicine in Dallas, Texas and active in the NPI registry since March 2007. The organization lists Margaret Aileen Sowada, General Partner, as its authorized official.

NPPES Registry Identity

NPI1417071903

Entity TypeOrganization

Primary Taxonomy207R00000X

Legal Business NameSAMUEL J LISTI & MARGARET A SOWADA

Location Address5909 HARRY HINES BLVD, ST PAUL UNIVERSITY HOSPITALDallas, TX 75235-6209

Mailing Address4212 High Summit DrDallas, TX 75244-6628 · (972) 247-8391

Phone(972) 247-8391

Organization SubpartNo

Authorized OfficialMargaret Aileen SowadaGeneral Partner · (972) 247-8391

Enumeration DateMarch 19, 2007

Last NPPES UpdateAugust 22, 2020

✔ NPI 1417071903 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.

5909 HARRY HINES BLVD, Dallas, TX 75235

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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)

Samuel J Listi & Margaret A Sowada 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 Samuel J Listi & Margaret A Sowada, which bills Medicare for the services this clinician delivers.

Clinician (1)

Samuel Listi, MD

Internal Medicine

NPI 1225033244

5909 HARRY HINES BLVD ST PAUL UNIVERSITY HOSPITAL
Dallas, TX 75235

(972) 247-8391

✔ 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 Samuel J Listi & Margaret A Sowada's NPI number?

The NPI number for Samuel J Listi & Margaret A Sowada is 1417071903. It was assigned to this organization in the NPPES registry on March 19, 2007.

Where is Samuel J Listi & Margaret A Sowada located?

Samuel J Listi & Margaret A Sowada is located at 5909 Harry Hines Blvd St Paul University Hospital, Dallas, TX 75235. The listed phone number is (972) 247-8391.

What is Samuel J Listi & Margaret A Sowada's specialty?

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

Is Samuel J Listi & Margaret A Sowada enrolled in Medicare?

Yes. Samuel J Listi & Margaret A Sowada is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Samuel J Listi & Margaret A Sowada?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Internal Medicine) reassigns their Medicare billing to Samuel J Listi & Margaret A Sowada. 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 Samuel J Listi & Margaret A Sowada was last updated on August 22, 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.