NPIMap

Organization Active NPI

National Nephrology Associates of Texas, L.P.

Doing business as Nna San Marcos

  • End-Stage Renal Disease (ESRD) Treatment Clinic/Center
  • San Marcos, TX
National Provider Identifier
1184726507
Registry record updated Aug 28, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
End-Stage Renal Disease (ESRD) Treatment Clinic/CenterTaxonomy code 261QE0700X
Legal business name
NATIONAL NEPHROLOGY ASSOCIATES OF TEXAS, L.P.
Doing business as
Nna San Marcos
Practice address
1340 Wonder World Dr Ste 4100
San Marcos, TX 78666-7695
Phone
(512) 878-2420
Fax
(512) 878-2440
NPI assigned
Sep 5, 2006
Last updated
Aug 28, 2026By the provider in NPPES
Organization subpart
Yes
Parent organization
FRESENIUS MEDICAL CARE HOLDINGS, INC.As reported in NPPES

NPPES NPI Registry

Updated by the provider on Aug 28, 2026

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

Authorized official

Name
Denise Wright
Title
Vice President
Phone
(781) 676-5200

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
End-Stage Renal Disease (ESRD) Treatment Clinic/Center 261QE0700X Primary

Addresses

Primary practice location

1340 Wonder World Dr Ste 4100
San Marcos, TX 78666-7695

Mailing address

1340 Wonder World Dr Ste 4100
San Marcos, TX 78666-7695
Phone (512) 878-2420

Other names 1

  • NNA SAN MARCOS Doing business as

Electronic endpoints 1

TypeEndpointUseAffiliation
CONNECT URL https://esmd.officeally.io:8291/Gateway/DocumentSubmission/2_0/NhinService/XDRRequest_Service Other Bluemark LLC / Office Ally

Medicare participation

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

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
O20040806000637 TX Part A Provider - End-Stage Renal Disease Facility (ESRD) 1557333036 1 other NPI on this enrollment
Practice locations: San Marcos, TX

Other NPIs with the same Medicare PAC ID 5

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

Care Compare: Dialysis facility

Medicare Care Compare
Listed as
Nna San MarcosCCN 452522
Overall star rating
4.0 of 5
Ownership
Profit
Certified
Aug 31, 1977
Medicare certification status
ActiveFrom the Provider of Services file
Chain
Fresenius Medical Care
Dialysis stations
24

Name & address match This facility record has no NPI; it was connected to this NPI by matching name and address.

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
45D0504391Nna San Marcos1340 Wonder World Drive Suite 4100, San Marcos, TX 78666Certificate of waiverAug 31, 2026

National Provider Directory

National Provider Directory
Tax ID family
Ability Network6 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.

Locations

1340 Wonder World Dr
Ste 4100
San Marcos, TX 78666
Phone (512) 878-2420

Practitioners & affiliated clinicians

Affiliated clinicians 2

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

NPI Registry JSON

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

{
    "created_epoch": "1157414400000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1787875200000",
    "number": "1184726507",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1340 WONDER WORLD DR STE 4100",
            "city": "SAN MARCOS",
            "state": "TX",
            "postal_code": "786667695",
            "telephone_number": "512-878-2420",
            "fax_number": "512-878-2440"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1340 WONDER WORLD DR STE 4100",
            "city": "SAN MARCOS",
            "state": "TX",
            "postal_code": "786667695",
            "telephone_number": "512-878-2420",
            "fax_number": "512-878-2440"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "NATIONAL NEPHROLOGY ASSOCIATES OF TEXAS, L.P.",
        "organizational_subpart": "YES",
        "parent_organization_legal_business_name": "FRESENIUS MEDICAL CARE HOLDINGS, INC.",
        "enumeration_date": "2006-09-05",
        "last_updated": "2026-08-28",
        "certification_date": "2026-08-28",
        "status": "A",
        "authorized_official_last_name": "WRIGHT",
        "authorized_official_first_name": "DENISE",
        "authorized_official_title_or_position": "VICE PRESIDENT",
        "authorized_official_telephone_number": "781-676-5200"
    },
    "taxonomies": [
        {
            "code": "261QE0700X",
            "taxonomy_group": "",
            "desc": "Clinic/Center, End-Stage Renal Disease (ESRD) Treatment",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "CONNECT",
            "endpointTypeDescription": "CONNECT URL",
            "endpoint": "https://esmd.officeally.io:8291/Gateway/DocumentSubmission/2_0/NhinService/XDRRequest_Service",
            "affiliation": "Y",
            "endpointDescription": "2.16.840.1.113883.3.2019.3",
            "affiliationName": "Bluemark LLC / Office Ally",
            "use": "OTHER",
            "useDescription": "Other",
            "useOtherDescription": "CMS esMD eMDR",
            "contentType": "CSV",
            "contentTypeDescription": "CSV",
            "address_1": "1300 SE Cardinal Ct Ste 190",
            "city": "Vancouver",
            "state": "WA",
            "country_code": "US",
            "postal_code": "986839683",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": [
        {
            "organization_name": "NNA SAN MARCOS",
            "code": "3",
            "type": "Doing Business As"
        },
        {
            "organization_name": "NNA SAN MARCOS",
            "code": "3",
            "type": "Doing Business As"
        }
    ]
}

Other providers in San Marcos, TX

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 28, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
  • Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments.
  • 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.