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EXPRESS ALTUS PLLC
NPI 1841141199
Emergency Medicine in Houston, TX

Active since February 04, 2026
1535 WEST LOOP S STE 300, HOUSTON, TX 77027(800) 417-0470(832) 219-3228 Get Directions Write a Review

NPPES record last updated: February 4, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Express Altus Pllc NPPES

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

EXPRESS ALTUS PLLC (NPI 1841141199) is a healthcare organization registered as an emergency medicine in Houston, Texas and active in the NPI registry since February 2026. The organization lists Darleen Callahan, Vice President, Revenue Cycle, as its authorized official.

NPPES Registry Identity

NPI1841141199
Entity TypeOrganization
Primary Taxonomy207P00000X
Legal Business NameEXPRESS ALTUS PLLC
Location Address1535 WEST LOOP S STE 300Houston, TX 77027-0003
Mailing Address1535 West Loop S Ste 300Houston, TX 77027-0003 · (800) 417-0470 · Fax (832) 219-3228
Phone(800) 417-0470
Fax(832) 219-3228
Organization SubpartNo
Authorized OfficialDarleen CallahanVice President, Revenue Cycle · (800) 417-0470
Enumeration DateFebruary 4, 2026
NPPES CertifiedFebruary 4, 2026
✔ NPI 1841141199 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207P00000X
Definition
An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.
1535 WEST LOOP S STE 300, Houston, TX 77027
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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

Other Providers at the Same Location NPPES 2

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

HORIZON ALTUS PLLC
Emergency Medicine
1535 WEST LOOP S STE 300
HOUSTON, TX 77027
Harris County (800) 417-0470
PRESTIGE HEALTHCARE ASSOCIATES
Anesthesiology
1535 WEST LOOP S STE 300
HOUSTON, TX 77027
Harris County (832) 404-2018

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 Express Altus PLLC's NPI number?

The NPI number for Express Altus PLLC is 1841141199. It was assigned to this organization in the NPPES registry on February 4, 2026.

Where is Express Altus PLLC located?

Express Altus PLLC is located at 1535 West Loop S Ste 300, Houston, TX 77027. The listed phone number is (800) 417-0470.

What is Express Altus PLLC's specialty?

The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.

When was this NPI record last updated?

The NPPES record for Express Altus PLLC was last updated on February 4, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.