South Texas Internal Medicine Associates, P.a.

Primary specialty

Rheumatology PhysicianTaxonomy code 207RR0500X

Legal business name

SOUTH TEXAS INTERNAL MEDICINE ASSOCIATES, P.A.

Practice address

1303 McCullough Ave Ste 300
San Antonio, TX 78212-5605

Phone

(210) 225-2551

Fax

(210) 225-3896

NPI assigned

Dec 24, 2007

Organization subpart

No

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

Authorized official

Name

Dr. Brian E Winn, M.D.NPI 1629067251

Title

Owner

Phone

(210) 225-2551

Specialties & licenses 1

Addresses

Other identifiers 7

Medicare fee-for-service enrollment

Enrolled in TX

Enrollment records 1

Locations

Practitioners 5

Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles.

• Brian E Winn, M.D.

  • Internal Medicine Physician
  • San Antonio, TX
  • NPI 1629067251
  Medicare reassignment NPD Authorized official
• Jose Clemente Ortiz Jr., MD

  • Internal Medicine Physician
  • San Antonio, TX
  • NPI 1134157522
  Medicare reassignment NPD
• Erin R Schendel, PA-C

  • Physician Assistant
  • San Antonio, TX
  • NPI 1679805253
  Medicare reassignment
• Mark A Isaeff, M.D.

  • Internal Medicine Physician
  • San Antonio, TX
  • NPI 1104815075
  NPD (past)
• Joel Pena, MD

  • Internal Medicine Physician
  • San Antonio, TX
  • NPI 1588653455
  NPD (past)

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

{
    "created_epoch": "1198454400000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1787529600000",
    "number": "1366626533",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1303 MCCULLOUGH AVE STE 300",
            "city": "SAN ANTONIO",
            "state": "TX",
            "postal_code": "782125605",
            "telephone_number": "210-225-2551",
            "fax_number": "210-225-3896"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1303 MCCULLOUGH AVE STE 300",
            "city": "SAN ANTONIO",
            "state": "TX",
            "postal_code": "782125605",
            "telephone_number": "210-225-2551",
            "fax_number": "210-225-3896"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "SOUTH TEXAS INTERNAL MEDICINE ASSOCIATES, P.A.",
        "organizational_subpart": "NO",
        "enumeration_date": "2007-12-24",
        "last_updated": "2026-08-24",
        "certification_date": "2026-08-24",
        "status": "A",
        "authorized_official_last_name": "WINN",
        "authorized_official_first_name": "BRIAN",
        "authorized_official_middle_name": "E",
        "authorized_official_title_or_position": "OWNER",
        "authorized_official_telephone_number": "210-225-2551",
        "authorized_official_name_prefix": "Dr.",
        "authorized_official_credential": "M.D."
    },
    "taxonomies": [
        {
            "code": "207RR0500X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "Internal Medicine, Rheumatology",
            "state": null,
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "035668501",
            "state": "TX"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "INDIVIDUAL NPI",
            "identifier": "1629067251",
            "state": null
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "035668502",
            "state": "TX"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "INDIVIDUAL NPI",
            "identifier": "1134157522",
            "state": null
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "220118801",
            "state": "TX"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "RAIL ROAD MEDICARE",
            "identifier": "P00871878",
            "state": "TX"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "RAIL ROAD MEDICARE",
            "identifier": "P00871880",
            "state": "TX"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• South Texas Healthcare Inc
• South Texas Heartbeat, P a
• South Texas Hospice LLC
• South Texas Injury & Rehabilitation Center
• South Texas Inpatient Consultants, PLLC
• South Texas Ketamine Physicians PLLC
• South Texas Liberty Alliance Group, Inc
• South Texas Lice Clinics LLC
• South Texas Medical Supply Dba
• South Texas Medspa LLC

• Rheumatology Physician in San Antonio, TX
• Providers in San Antonio, TX by specialty
• Rheumatology Physician in Texas

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 24, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.