John Kennedy Gresham, M.D.

Primary specialty

Interventional Cardiology PhysicianTaxonomy code 207RI0011X

License

M6641 Issued in TX

Practice address

4815 Alameda Ave
El Paso, TX 79905-2705

Phone

(915) 215-5200

Fax

(915) 215-8640

NPI assigned

Jun 8, 2007

Sex

Male

Sole proprietor

No

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

Specialties & licenses 4

Addresses

Medicare fee-for-service enrollment

Enrolled in TX, NC2 enrollments

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: Yes

Green means eligible to order or refer.

Enrollment records 2

Specialty

Interventional CardiologyAlso: Internal Medicine

Education

Eastern Virginia Medical School, 1999

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Carteret Medical Group LLCGroup PAC ID 5698947794, 65 clinicians

Uvalde Medical and Surgical AssociatesGroup PAC ID 3971650672, 13 clinicians

Citizens Medical Center County of VictoriaGroup PAC ID 3577785096, 102 clinicians

Carteret County General Hospital CorporationGroup PAC ID 7517877517, 118 clinicians

Texas Tech University Health Sciences Center El PasoGroup PAC ID 7517864754, 306 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Carteret General Hospital Hospital, Morehead City, NC, CCN 340142
• Methodist Hospital Stone Oak Hospital, San Antonio, TX, CCN 670055
• Uvalde Memorial Hospital Hospital, Uvalde, TX, CCN 451387
• University Medical Center of El Paso Hospital, El Paso, TX, CCN 450024
• Citizens Medical Center Hospital, Victoria, TX, CCN 450023

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: john.gresham.1@21041.direct.athenahealth.com
• FHIR API: https://fhir.nextgen.com/nge/prod/fhir-api-r4/fhir/r4/

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.

• Cardiovascular Consultants of San Antonio, PLLC

  • Interventional Cardiology Physician
  • San Antonio, TX
  • NPI 1295001766

  Cardiovascular Disease

  Medicare reassignment NPD Authorized official
• Citizen'S Medical Center County of Victoria

  • Multi-Specialty Clinic/Center
  • Victoria, TX
  • NPI 1205242088

  Cardiovascular Disease

  Medicare reassignment Care Compare group NPD
• Uvalde Medical and Surgical Associates

  • Surgery Physician
  • Uvalde, TX
  • NPI 1730324500
  Medicare reassignment Care Compare group NPD
• Texas Tech University Health Sciences Center El Paso

  • Internal Medicine Physician
  • El Paso, TX
  • NPI 1598705055
  Medicare reassignment Care Compare group
• Carteret County General Hospital Corporation

  • General Acute Care Hospital
  • Morehead City, NC
  • NPI 1760479331
  Medicare reassignment Care Compare group
• Carteret Medical Group LLC

  • Gastroenterology Physician
  • Morehead City, NC
  • NPI 1700164464
  Medicare reassignment Care Compare group
• Uvalde Medical and Surgical Associates

  • Rural Health Clinic/Center
  • Uvalde, TX
  • NPI 1891126959
  NPD
• BHS Physicians Network, Inc

  • Durable Medical Equipment & Medical Supplies
  • Boerne, TX
  • NPI 1730079286
  NPD (past)
• Citizens Medical Center County of Victoria

  • General Acute Care Hospital
  • Victoria, TX
  • NPI 1124052162
  NPD (past)
• North Central Cardiac Cath Lab LP

  • Specialist
  • San Antonio, TX
  • NPI 1699890848
  NPD (past)

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

• Citizens Medical Center County of Victoria

  • General Acute Care Hospital
  • Victoria, TX
  • NPI 1124052162
  Care Compare affiliation
• El Paso County Hospital District

  • General Acute Care Hospital
  • El Paso, TX
  • NPI 1316936990
  Care Compare affiliation
• El Paso County Hospital District

  • General Acute Care Hospital
  • El Paso, TX
  • NPI 1619747938
  Care Compare affiliation
• El Paso County Hospital District

  • Clinical Medical Laboratory
  • El Paso, TX
  • NPI 1932434925

  Hospital

  Care Compare affiliation
• Methodist Healthcare System of San Antonio LTD LLP

  • General Acute Care Hospital
  • San Antonio, TX
  • NPI 1659525236
  Care Compare affiliation
• Uvalde County Hospital Authority

  • Critical Access Hospital
  • Uvalde, TX
  • NPI 1740288505
  Care Compare affiliation
• Carteret County General Hospital Corporation

  • General Acute Care Hospital
  • Morehead City, NC
  • NPI 1760479331
  Care Compare affiliation

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

{
    "created_epoch": "1181260800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1776124800000",
    "number": "1619170347",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "540 OAK CENTRE DR STE 260",
            "city": "SAN ANTONIO",
            "state": "TX",
            "postal_code": "782584767",
            "telephone_number": "210-499-0448",
            "fax_number": "210-370-9638"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "4815 ALAMEDA AVE",
            "city": "EL PASO",
            "state": "TX",
            "postal_code": "799052705",
            "telephone_number": "915-215-5200",
            "fax_number": "915-215-8640"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "540 Oak Centre Dr Ste 260",
            "address_purpose": "LOCATION",
            "city": "San Antonio",
            "state": "TX",
            "postal_code": "782584767",
            "country_code": "US",
            "telephone_number": "210-499-0448",
            "fax_number": "210-370-9638",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "1800 Garner Field Rd",
            "address_purpose": "LOCATION",
            "city": "Uvalde",
            "state": "TX",
            "postal_code": "788016210",
            "country_code": "US",
            "telephone_number": "830-333-8634",
            "fax_number": "830-591-2611",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "GRESHAM",
        "first_name": "JOHN",
        "middle_name": "KENNEDY",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2007-06-08",
        "last_updated": "2026-04-14",
        "certification_date": "2026-04-14",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207UN0901X",
            "taxonomy_group": "",
            "desc": "Nuclear Medicine, Nuclear Cardiology",
            "state": "TX",
            "license": "M6641",
            "primary": false
        },
        {
            "code": "207RC0000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Cardiovascular Disease",
            "state": "VA",
            "license": "0101230320",
            "primary": false
        },
        {
            "code": "207RI0011X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Interventional Cardiology",
            "state": "TX",
            "license": "M6641",
            "primary": true
        },
        {
            "code": "207RC0000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Cardiovascular Disease",
            "state": "TX",
            "license": "M6641",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Denise S Greer, CRNA
• Gregorio Joel Castillo, M.D. P.a.
• Gregorio Reyes
• Gregory H Szeyko, MD, PA
• Gregory L. Whitaker, DO, P.L.L.C.
• Jennifer Grew
• Navtej Singh Grewal, MD
• Sean Grewal
• Amanda Christine Griego Pelletier, DDS
• Annette Griego, NP

• Interventional Cardiology Physician in El Paso, TX
• Providers in El Paso, TX by specialty
• Interventional Cardiology Physician in Texas

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Apr 14, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• 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.