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DARREN LACKAN M.D., P.A.
NPI 1871639757
Internal Medicine - Endocrinology, Diabetes & Metabolism in Ft. Worth, TX

Active since January 29, 2007
6844 HARRIS PARKWAY, FT. WORTH, TX 76132(817) 263-0007(817) 263-1118 Get Directions Write a Review

NPPES record last updated: September 23, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Darren Lackan M.d., P.a. NPPES

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

DARREN LACKAN M.D., P.A. (NPI 1871639757) is a healthcare organization registered as an endocrinology, diabetes & metabolism in Ft. Worth, Texas and active in the NPI registry since January 2007. The organization lists Darren Wayne Lackan, Owner, as its authorized official.

NPPES Registry Identity

NPI1871639757
Entity TypeOrganization
Primary Taxonomy207RE0101X
Legal Business NameDARREN LACKAN M.D., P.A.
Location Address6844 HARRIS PARKWAYFt. Worth, TX 76132
Mailing Address6844 Harris Pkwy Ste 300Fort Worth, TX 76132-4281 · (817) 263-0007 · Fax (817) 263-1118
Phone(817) 263-0007
Fax(817) 263-1118
Organization SubpartNo
Authorized OfficialDarren Wayne LackanOwner · (682) 225-1157
Enumeration DateJanuary 29, 2007
Last NPPES UpdateSeptember 23, 2025
NPPES CertifiedSeptember 23, 2025
✔ NPI 1871639757 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Endocrinology, Diabetes & MetabolismAllopathic & Osteopathic Physicians
Taxonomy Code207RE0101X
License✔ Licensed in TX · L6481
Definition
An internist who concentrates on disorders of the internal (endocrine) glands such as the thyroid and adrenal glands. This specialist also deals with disorders such as diabetes, metabolic and nutritional disorders, obesity, pituitary diseases and menstrual and sexual problems.
6844 HARRIS PARKWAY, Ft. Worth, TX 76132
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Other Identifiers 1

Medicaid190356901TX

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Darren Lackan M.d., P.a. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Medicare Revalidation Due Date

Revalidation due by December 31, 2026

Medicare-enrolled providers and suppliers confirm their enrollment information with CMS on a set cycle, every 5 years for most and every 3 years for medical equipment suppliers. CMS sets the due date for each enrollment.

StateEnrollment IDDue date
StateTexasEnrollment IDO20071025000078Non-DME Part B · Clinic/Group PracticeDue dateDecember 31, 2026
Source: CMS Revalidation Due Date List, October 2026 release.

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 1 clinician reassigns Medicare billing to Darren Lackan M.D., P.A., which bills Medicare for the services this clinician delivers.

Clinician (1)

Darren Lackan, M.D.
Endocrinology
NPI 1053347534
6844 HARRIS PKWY STE 300
Ft Worth, TX 76132
(817) 263-0007
✔ 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 Darren Lackan M.D., P.A.'s NPI number?

The NPI number for Darren Lackan M.D., P.A. is 1871639757. It was assigned to this organization in the NPPES registry on January 29, 2007.

Where is Darren Lackan M.D., P.A. located?

Darren Lackan M.D., P.A. is located at 6844 Harris Parkway, Ft. Worth, TX 76132. The listed phone number is (817) 263-0007.

What is Darren Lackan M.D., P.A.'s specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Endocrinology, Diabetes & Metabolism, with taxonomy code 207RE0101X.

Is Darren Lackan M.D., P.A. enrolled in Medicare?

Yes. Darren Lackan M.D., P.A. is registered in the Medicare PECOS enrollment system.

When is Darren Lackan M.D., P.A.'s Medicare revalidation due?

According to the CMS Revalidation Due Date List (October 2026 release), the Medicare Non-DME Part B enrollment for this organization (Texas, Clinic/Group Practice) is due for revalidation by December 31, 2026. Medicare providers and suppliers revalidate their enrollment every 5 years, and medical equipment suppliers every 3 years. Confirm current requirements with your Medicare Administrative Contractor.

How many clinicians bill Medicare through Darren Lackan M.D., P.A.?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Endocrinology) reassigns their Medicare billing to Darren Lackan M.D., P.A.. 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 Darren Lackan M.D., P.A. was last updated on September 23, 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.