Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Horizon Altus PLLC

Organization Emergency Medicine Physician · NPI 1124979471

Horizon Altus PLLC is an Emergency Medicine Physician in Houston, Texas. Registered with an NPI since 2026.

In the registry since
2026
What do these letters mean?
PLLC — Professional limited liability company
A form of business registration, not a clinical qualification.

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Practice location Address checks out

1535 W Loop S Ste 300
Houston, TX 77027-0003
Phone: (800) 417-0470
Fax: (832) 219-3228
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X

Record details

NPI number1124979471
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Darleen Callahan — Vice President, Revenue Cycle · (800) 417-0740
NPI enumeratedFebruary 4, 2026
Last updated in NPPESApril 17, 2026
Certification dateApril 17, 2026
Mailing address1535 West Loop S Ste 300, Houston, TX 77027-0003

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