NORTH STAR INTERNAL MEDICINE PLLC
NPI 1285505529
Internal Medicine in Dallas, TX

Q: What is North Star Internal Medicine PLLC's NPI number?

The NPI number for North Star Internal Medicine PLLC is 1285505529. It was assigned to this organization in the NPPES registry on September 17, 2025.

Q: What is North Star Internal Medicine PLLC's specialty?

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

Active since September 17, 2025CLIA 45D2331345 · Waiver

8230 WALNUT HILL LN STE 410, DALLAS, TX 75231(214) 420-9307(833) 764-3865 Get Directions Write a Review

NPPES record last updated: September 17, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

On this page

About North Star Internal Medicine Pllc NPPES

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

NORTH STAR INTERNAL MEDICINE PLLC (NPI 1285505529) is a healthcare organization registered as an internal medicine in Dallas, Texas and active in the NPI registry since September 2025. The organization holds a CLIA Waiver certificate valid through September 29, 2027 and lists Natalia Palacio, Physician/owner, as its authorized official.

NPPES Registry Identity

NPI1285505529

Entity TypeOrganization

Primary Taxonomy207R00000X

Legal Business NameNORTH STAR INTERNAL MEDICINE PLLC

Location Address8230 WALNUT HILL LN STE 410Dallas, TX 75231-4469

Mailing Address8230 Walnut Hill Ln Ste 410Dallas, TX 75231-4469 · (214) 420-9307 · Fax (833) 764-3865

Phone(214) 420-9307

Fax(833) 764-3865

Organization SubpartNo

Authorized OfficialNatalia PalacioPhysician/owner · (214) 883-1234

Enumeration DateSeptember 17, 2025

NPPES CertifiedSeptember 17, 2025

✔ NPI 1285505529 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.

8230 WALNUT HILL LN STE 410, Dallas, TX 75231

Open in Google Maps ↗

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

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Texas.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

North Star Internal Medicine Pllc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 2 clinicians reassign Medicare billing to North Star Internal Medicine PLLC, which bills Medicare for the services they deliver. Of these, 1 practice at this address and 2 within 10 miles. They are listed nearest first.

Clinicians, nearest first (2)

Natalia Palacio, MD

Internal Medicine

NPI 1396999819

8230 WALNUT HILL LN STE 410
Dallas, TX 75231

(214) 420-9307

✔ PECOS✔ Accepts MedicareSame address

James Carroll, M.D.

Internal Medicine

NPI 1932160884

8210 WALNUT HILL LN STE 718
Dallas, TX 75231

(214) 345-7377

✔ PECOS✔ Accepts Medicare0.1 mi

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

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Waiver 45D2331345

North Star Nternal Medicine PLLC · Dallas, TX

Active · expires Sep 29, 2027

CLIA Number45D2331345

Laboratory TypePhysician Office

Certificate Effective DateSeptember 30, 2025

Certificate Expiration DateSeptember 29, 2027

Laboratory DirectorJames M. Carroll

Laboratory Phone(214) 420-9307

Laboratory LocationNorth Star Nternal Medicine PLLC8230 Walnut Hill Ln Suite 410, Dallas, TX 75231

CLIA data matches this NPI record on: Address Phone

This certificate is issued to a laboratory to perform only waived tests.

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 North Star Internal Medicine PLLC's NPI number?

The NPI number for North Star Internal Medicine PLLC is 1285505529. It was assigned to this organization in the NPPES registry on September 17, 2025.

Where is North Star Internal Medicine PLLC located?

North Star Internal Medicine PLLC is located at 8230 Walnut Hill Ln Ste 410, Dallas, TX 75231. The listed phone number is (214) 420-9307.

What is North Star Internal Medicine PLLC's specialty?

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

Is North Star Internal Medicine PLLC enrolled in Medicare?

Yes. North Star Internal Medicine PLLC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through North Star Internal Medicine PLLC?

According to the CMS Revalidation Reassignment List (October 2026 release), 2 clinicians, all in Internal Medicine, reassign their Medicare billing to North Star Internal Medicine PLLC. 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. Of these, 1 practice at this address and 2 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Does North Star Internal Medicine PLLC hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 45D2331345) is associated with this NPI, valid through September 29, 2027. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

What insurance does North Star Internal Medicine PLLC accept?

Health plans from Blue Cross and Blue Shield of Texas list North Star Internal Medicine PLLC as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for North Star Internal Medicine PLLC was last updated on September 17, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.