NPIMap

Organization Active NPI

North Houston - TRMC, LLC

Doing business as HCA Houston ER 24/7 Cypress, a department of HCA Houston Healthcare Tomball

  • Emergency Care Clinic/Center
  • Houston, TX
National Provider Identifier
1912843749
Registry record updated Apr 24, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Emergency Care Clinic/CenterTaxonomy code 261QE0002X
Legal business name
NORTH HOUSTON - TRMC, LLC
Doing business as
HCA Houston ER 24/7 Cypress, a department of HCA Houston Healthcare Tomball
Practice address
5003 Cypress Creek Pkwy
Houston, TX 77069-4502
Phone
(281) 401-7500
NPI assigned
Apr 24, 2026
Organization subpart
Yes
Parent organization
NORTH HOUSTON - TRMC, LLCAs reported in NPPES

NPPES NPI Registry

Updated by the provider on Apr 24, 2026

Registry information is reported by the provider to CMS and is not verified. About this source

Authorized official

Name
Robert Marmerstein
Title
Ceo
Phone
(281) 401-7601

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Emergency Care Clinic/Center 261QE0002X Primary

Addresses

Primary practice location

5003 Cypress Creek Pkwy
Houston, TX 77069-4502

Mailing address

5003 Cypress Creek Pkwy
Houston, TX 77069-4502
Phone (281) 401-7500

Other names 1

  • HCA Houston ER 24/7 Cypress, a department of HCA Houston Healthcare Tomball Doing business as

Electronic endpoints 1

TypeEndpointUseAffiliation
CONNECT URL https://esmd.abilitynetwork.com:8291/Gateway/DocumentSubmission/2_0/NhinService/XDRRequest_Service Other Ability Network

Laboratory certificates & supplier records

Derived by NPIMap

These CMS records do not include an NPI. They are shown because their name and street address match this provider’s.

CLIA laboratory certificates

CLIA numberLaboratoryCertificateExpires
45D2159021HCA Houston ER 24/7, a Department of HCA Houston5003 Cypress Creek Parkway, Houston, TX 77069AccreditationOct 22, 2027

National Provider Directory

National Provider Directory
Tax ID family
North Houston - TRMC LLC6 organizations share this tax ID, including this one
Part of
North Houston - TRMC LLC

Other organizations with this tax ID 5

Organizations that report the same tax identification number in the National Provider Directory.

Ownership & related parties

Parent organization (reported in NPPES) 1

This organization reports itself as a subpart in NPPES; the parent’s legal name matches this organization in the same state.

NPI Registry JSON

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1776988800000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1776988800000",
    "number": "1912843749",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "5003 CYPRESS CREEK PKWY",
            "city": "HOUSTON",
            "state": "TX",
            "postal_code": "770694502",
            "telephone_number": "281-401-7500"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "5003 CYPRESS CREEK PKWY",
            "city": "HOUSTON",
            "state": "TX",
            "postal_code": "770694502",
            "telephone_number": "281-401-7500"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "NORTH HOUSTON - TRMC, LLC",
        "organizational_subpart": "YES",
        "parent_organization_legal_business_name": "NORTH HOUSTON - TRMC, LLC",
        "enumeration_date": "2026-04-24",
        "last_updated": "2026-04-24",
        "certification_date": "2026-04-24",
        "status": "A",
        "authorized_official_last_name": "MARMERSTEIN",
        "authorized_official_first_name": "ROBERT",
        "authorized_official_title_or_position": "CEO",
        "authorized_official_telephone_number": "281-401-7601"
    },
    "taxonomies": [
        {
            "code": "261QE0002X",
            "taxonomy_group": "",
            "desc": "Clinic/Center, Emergency Care",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "CONNECT",
            "endpointTypeDescription": "CONNECT URL",
            "endpoint": "https://esmd.abilitynetwork.com:8291/Gateway/DocumentSubmission/2_0/NhinService/XDRRequest_Service",
            "affiliation": "Y",
            "endpointDescription": "2.16.840.1.113883.3.667.2",
            "affiliationName": "Ability Network",
            "use": "OTHER",
            "useDescription": "Other",
            "useOtherDescription": "CMS esMD eMDR",
            "contentType": "CSV",
            "contentTypeDescription": "CSV",
            "address_1": "64 S Price Rd",
            "city": "Brownsville",
            "state": "TX",
            "country_code": "US",
            "postal_code": "785212459",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": [
        {
            "organization_name": "HCA Houston ER 24/7 Cypress, a department of HCA Houston Healthcare Tomball",
            "code": "3",
            "type": "Doing Business As"
        }
    ]
}

Other providers in Houston, TX

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Apr 24, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
  • Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
  • National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.