NPIMap

Organization Active NPI

North Houston - TRMC, LLC

Doing business as HCA Houston Healthcare Tomball

  • General Acute Care Hospital
  • Tomball, TX
National Provider Identifier
1750819025
Registry record updated Nov 11, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
General Acute Care HospitalTaxonomy code 282N00000X
Legal business name
NORTH HOUSTON - TRMC, LLC
Doing business as
HCA Houston Healthcare Tomball
Practice address
605 Holderrieth Blvd
Tomball, TX 77375-6445
Phone
(281) 401-7500
Fax
(281) 351-4904
NPI assigned
May 31, 2017
Last updated
Nov 11, 2025By the provider in NPPES
Organization subpart
No

NPPES NPI Registry

Updated by the provider on Nov 11, 2025

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

Authorized official

Name
Richard Leigh Ervin
Title
Cfo
Phone
(281) 401-7500

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
General Acute Care Hospital 282N00000X NU Primary

Addresses

Primary practice location

605 Holderrieth Blvd
Tomball, TX 77375-6445

Mailing address

605 Holderrieth Blvd
Tomball, TX 77375-6445

Other names 1

  • HCA Houston Healthcare Tomball Doing business as

Electronic endpoints 2

TypeEndpointUseAffiliation
CONNECT URL https://esmd.abilitynetwork.com:8291/Gateway/DocumentSubmission/2_0/NhinService/XDRRequest_Service Other Ability Network
Direct Messaging Address TOMBALLMC.COCTRA.HCAPAN@CCDA.HCADIRECT.NET Direct

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in TX

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
O20170717003528 TX Part A Provider - Hospital 3375813843 Practice locations: Houston, TX; Tomball, TX

NPI to CCN mapping 1

The Medicare certification numbers (CCNs) connected to NPI 1750819025. Details of each certification follow.

Hospital certification: CCN 450670

Legal name
NORTH HOUSTON - TRMC LLC
Doing business as
HCA HOUSTON HEALTHCARE TOMBALL
Certification status
Active
Provider type (POS)
Hospital – Short-term
Participating since
Aug 2, 1976
Last certification
Feb 21, 2025
Beds
289
Ownership / control type
Private (for profit)
Most recent change of ownership
Jul 1, 2017 (5 total)
Organization structure
LLCProprietary
Incorporated
Apr 27, 2017 in DE
Enrollment address
605 Holderrieth Blvd
Tomball, TX 77375-6445
Main/Primary Hospital Location
Hospital subgroups
General, Acute care

Facilities connected through Provider of Services related, parent or unit certification numbers.

Other NPIs with the same Medicare PAC ID 2

NPIs whose Medicare enrollments share a PECOS associate control ID (the same enrolled entity).

Care Compare: Hospital

Medicare Care Compare
Listed as
HCA Houston Healthcare TomballCCN 450670 · All quality measures
Overall star rating
3 of 5
Type
Acute Care Hospitals
Ownership
Proprietary
Medicare certification status
ActiveFrom the Provider of Services file
Emergency services
Yes

National Provider Directory

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

Other organizations with this tax ID 5

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

Interoperability endpoints

  • Direct secure messaging: tomballmc.coctra.hcapan@ccda.hcadirect.net

Ownership & related parties

All disclosed owners & managing parties 19

As disclosed on the Medicare enrollment (CMS All Owners files). Individuals include officers, directors and managing employees, who may not hold ownership.

NameRoleSinceShare
HCA Squared LLC Organization, Nashville, TN LLC 5% Or Greater Indirect Ownership Interest Apr 27, 2017 5.37%
HCA Inc Organization, Nashville, TN Chain home office 5% Or Greater Indirect Ownership Interest Apr 27, 2017 100%
Francis Tezanos Individual Corporate OfficerChief Financial Officer Feb 1, 2026
W-2 Managing EmployeeChief Financial Officer Feb 1, 2026
Eric D Smith Individual Contracted Managing EmployeeVice President of Reimbursement Mar 1, 2021
HCA Healthcare Inc Organization, Nashville, TN 5% Or Greater Indirect Ownership Interest Apr 27, 2017 100%
Frisco Holding II Organization, Wilmington, DE Holding company 5% Or Greater Indirect Ownership Interest Feb 6, 2026 16.3%
Houston Healthcare Holdings, Inc Organization, Nashville, TN 5% Or Greater Direct Ownership Interest Apr 27, 2017 100%
Columbia/HCA of Houston, Inc Organization, Nashville, TN Corporation, For-profit 5% Or Greater Indirect Ownership Interest Apr 27, 2017 100%
Women's Hospital Indianapolis, L.P. Organization, Nashville, TN 5% Or Greater Indirect Ownership Interest Apr 27, 2017 18.27%
Robert Marmerstein Individual Corporate OfficerCeo Jul 13, 2020 100%
HCA Health Services of Texas Inc Organization, Nashville, TN 5% Or Greater Indirect Ownership Interest Apr 27, 2017 10.6%
Healthtrust Inc - the Hospital Company Organization, Nashville, TN 5% Or Greater Indirect Ownership Interest Apr 27, 2017 100%
Hospital Corp LLC Organization, Nashville, TN LLC 5% Or Greater Indirect Ownership Interest Apr 27, 2017 5.37%
Hercules Holding II Organization, Nashville, TN Holding company 5% Or Greater Indirect Ownership Interest Feb 6, 2026 14.4%
Indianapolis Hospital Partner, LLC Organization, Nashville, TN LLC 5% Or Greater Indirect Ownership Interest Apr 27, 2017 18.09%
Columbia Hospital Corporation of West Houston Organization, Nashville, TN Corporation 5% Or Greater Indirect Ownership Interest Apr 27, 2017 5.61%
Hti Hospital Holdings Inc Organization, Nashville, TN 5% Or Greater Indirect Ownership Interest Apr 27, 2017 24.76%
Healthserv Acquisition LLC Organization, Nashville, TN LLC 5% Or Greater Indirect Ownership Interest Apr 27, 2017 10.6%
Columbia Hospital Corporation - Delaware Organization, Nashville, TN Corporation 5% Or Greater Indirect Ownership Interest Apr 27, 2017 6.49%

Facilities with the same owner 266

Facilities that share an organizational owner with 5% or greater ownership or operational control.

  • Alliance Behavioral Health Services, LLC

    dba Medical City Mental Health and Wellness Center - Alliance

    • Psychiatric Hospital
    • Fort Worth, TX
    • NPI 1316775935

    HCA Health Services of Texas Inc, HCA Squared LLC, Healthserv Acquisition LLC, Hercules Holding II, Hospital Corp LLC, Hti Hospital Holdings Inc

    CMS ownership
  • Arc Therapy Services LLC

    dba Medical City Healthcare at Home

    • Home Health Agency
    • Irving, TX
    • NPI 1639180235

    HCA Squared LLC, Hospital Corp LLC

    CMS ownership
  • Arc Therapy Services, LLC

    dba Corpus Christi Healthcare at Home

    • Home Health Agency
    • Corpus Christi, TX
    • NPI 1124070065

    HCA Squared LLC, Hospital Corp LLC

    CMS ownership
  • Arc Therapy Services, LLC

    dba Medical City Hospice & Family Care

    • Community Based Hospice Care Agency
    • Irving, TX
    • NPI 1891049995

    HCA Squared LLC, Hospital Corp LLC

    CMS ownership
  • Bay Area Healthcare Group, LTD.

    dba Corpus Christi Medical Center

    • Psychiatric Hospital Unit
    • Corpus Christi, TX
    • NPI 1043449143

    Columbia Hospital Corporation - Delaware, Hti Hospital Holdings Inc

    CMS ownership
  • Bay Area Healthcare Group, LTD.

    dba Corpus Christi Medical Center

    • General Acute Care Hospital
    • Corpus Christi, TX
    • NPI 1508810573

    Columbia Hospital Corporation - Delaware, Hti Hospital Holdings Inc

    CMS ownership
  • Bay Area Healthcare Group, LTD.

    dba Corpus Christi Medical Center - Inpatient Rehabilitation

    • Rehabilitation Hospital Unit
    • Corpus Christi, TX
    • NPI 1669732707

    Columbia Hospital Corporation - Delaware, Hti Hospital Holdings Inc

    CMS ownership
  • Chca Bayshore LP

    dba Bayshore Medical Center

    • Rehabilitation Hospital Unit
    • Pasadena, TX
    • NPI 1154375129

    Columbia Hospital Corporation - Delaware, Columbia Hospital Corporation of West Houston, Columbia/HCA of Houston, Inc, HCA Health Services of Texas Inc, HCA Squared LLC, Healthserv Acquisition LLC, Hercules Holding II, Hospital Corp LLC, Houston H

    CMS ownership
  • Chca Bayshore LP

    dba Bayshore Medical Center

    • General Acute Care Hospital
    • Pasadena, TX
    • NPI 1174576698

    Columbia Hospital Corporation - Delaware, Columbia Hospital Corporation of West Houston, Columbia/HCA of Houston, Inc, HCA Health Services of Texas Inc, HCA Squared LLC, Healthserv Acquisition LLC, Hercules Holding II, Hospital Corp LLC, Houston H

    CMS ownership
  • Chca Bayshore, L.P.

    dba HCA Houston Healthcare Southeast

    • Skilled Nursing Facility
    • Pasadena, TX
    • NPI 1114636354

    Columbia Hospital Corporation - Delaware, Columbia Hospital Corporation of West Houston, Columbia/HCA of Houston, Inc, HCA Health Services of Texas Inc, HCA Squared LLC, Healthserv Acquisition LLC, Hospital Corp LLC, Houston Healthcare Holdings, in

    CMS ownership
  • Chca Clear Lake LP

    dba HCA Houston Healthcare Clear Lake

    • General Acute Care Hospital
    • Webster, TX
    • NPI 1063466035

    Columbia Hospital Corporation - Delaware, Columbia Hospital Corporation of West Houston, Columbia/HCA of Houston, Inc, HCA Health Services of Texas Inc, HCA Squared LLC, Healthserv Acquisition LLC, Hercules Holding II, Hospital Corp LLC, Houston H

    CMS ownership
  • Chca Clear Lake LP

    dba HCA Houston Healthcare Clear Lake

    • Rehabilitation Hospital Unit
    • Webster, TX
    • NPI 1881648855

    Columbia Hospital Corporation - Delaware, Columbia Hospital Corporation of West Houston, Columbia/HCA of Houston, Inc, HCA Health Services of Texas Inc, HCA Squared LLC, Healthserv Acquisition LLC, Hercules Holding II, Hospital Corp LLC, Houston H

    CMS ownership
View all 266

Subparts reporting this organization as parent 5

Organizations that report themselves as subparts in NPPES and name this organization, in the same state, as their parent.

Practitioners & affiliated clinicians

Practitioners 26

Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles, and the practitioner matching its NPPES authorized official.

View all 26

Affiliated clinicians 340

Clinicians who list this facility as an affiliation in Medicare Care Compare.

View all 340

NPI Registry JSON

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

{
    "created_epoch": "1496188800000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1762819200000",
    "number": "1750819025",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "605 HOLDERRIETH BLVD",
            "city": "TOMBALL",
            "state": "TX",
            "postal_code": "773756445"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "605 HOLDERRIETH BLVD",
            "city": "TOMBALL",
            "state": "TX",
            "postal_code": "773756445",
            "telephone_number": "281-401-7500",
            "fax_number": "281-351-4904"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "NORTH HOUSTON - TRMC, LLC",
        "organizational_subpart": "NO",
        "enumeration_date": "2017-05-31",
        "last_updated": "2025-11-11",
        "certification_date": "2025-11-11",
        "status": "A",
        "authorized_official_last_name": "ERVIN",
        "authorized_official_first_name": "RICHARD",
        "authorized_official_middle_name": "LEIGH",
        "authorized_official_title_or_position": "CFO",
        "authorized_official_telephone_number": "281-401-7500"
    },
    "taxonomies": [
        {
            "code": "282N00000X",
            "taxonomy_group": "",
            "desc": "General Acute Care Hospital",
            "state": "NU",
            "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 Ste B",
            "city": "Brownsville",
            "state": "TX",
            "country_code": "US",
            "postal_code": "785212459",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "TOMBALLMC.COCTRA.HCAPAN@CCDA.HCADIRECT.NET",
            "affiliation": "N",
            "endpointDescription": "Please contact CORP.HCACEP@HCAHealthcare.com for information regarding validation steps that may be required to ensure CCDs sent to the listed direct address are successfully received.",
            "use": "DIRECT",
            "useDescription": "Direct",
            "contentType": "OTHER",
            "contentTypeDescription": "Other",
            "contentOtherDescription": "CCD",
            "address_1": "605 Holderrieth Blvd",
            "city": "Tomball",
            "state": "TX",
            "country_code": "US",
            "postal_code": "773756445",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": [
        {
            "organization_name": "HCA Houston Healthcare Tomball",
            "code": "3",
            "type": "Doing Business As"
        }
    ]
}

Other providers in Tomball, TX

Sources for this page

Verify at the official NPI Registry.