Madhu B Challapalli, MD

Primary specialty

Cardiovascular Disease PhysicianTaxonomy code 207RC0000X

License

L0999 Issued in TX

Practice address

1139 E Sonterra Blvd Ste 520
San Antonio, TX 78258-4347

Phone

(210) 490-6000

Fax

(210) 490-4658

NPI assigned

Feb 1, 2006

Last updated

Sep 16, 2026By the provider in NPPES

Sex

Male

Sole proprietor

No

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

Specialties & licenses 1

Addresses

Other identifiers 4

Medicare fee-for-service enrollment

Enrolled in TX, NV2 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

Radiation Oncology

Education

Texas Tech University Health Science Center School of Medicine, 1997

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Challapalli Cardiology PCGroup PAC ID 1456723162, 8 clinicians

Christus Trinity Clinic TexasGroup PAC ID 3072426741, 1,540 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Christus Santa Rosa Hospital-San Marcos Hospital, San Marcos, TX, CCN 450272

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: 3621-challapalli-madhu@direct.leadingreach.com
• FHIR API: https://api.platform.athenahealth.com/16700/brand/2/csg/1/fhir/r4
• Direct secure messaging: madhu.challapalli.1@11434.direct.athenahealth.com
• Direct secure messaging: mchallapalli291343@christushealth.direct-ci.net

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

• Christus Trinity Clinic Texas

  dba Christus Trinity Clinic

  • Family Medicine Physician
  • Tyler, TX
  • NPI 1285684225

  Cardiovascular Disease

  Medicare reassignment Care Compare group NPD
• Challapalli Cardiology PC

  • Cardiovascular Disease Physician
  • Reno, NV
  • NPI 1487376166
  Medicare reassignment Care Compare group NPD
• Christus Trinity Clinic Texas

  dba Christus Trinity Clinic

  • Rural Health Clinic/Center
  • Winnsboro, TX
  • NPI 1801673165
  NPD
• Imed Healthcare Associates, PLLC

  dba IMED Internal Medicine

  • Internal Medicine Physician
  • San Antonio, TX
  • NPI 1568619005
  NPD (past)
• Methodist Medical Group, PLLC

  • Cardiovascular Disease Physician
  • San Antonio, TX
  • NPI 1982979605
  NPD (past)
• Methodist Physician Practices, PLLC

  • Surgery Physician
  • San Antonio, TX
  • NPI 1922252717

  Cardiovascular Disease

  NPD (past)
• San Antonio Cardiology Clinic PA

  dba Cardiology Clinic of San Antonio

  • Cardiovascular Disease Physician
  • San Antonio, TX
  • NPI 1326073206
  NPD (past)

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

• Christus Santa Rosa Health Care Corporation

  dba Christus Santa Rosa Hospital - New Braunfels

  • General Acute Care Hospital
  • New Braunfels, TX
  • NPI 1114725033
  Care Compare affiliation
• Christus Santa Rosa Health Care Corporation

  dba Christus Santa Rosa Hospital - San Marcos

  • General Acute Care Hospital
  • San Marcos, TX
  • NPI 1447883301
  Care Compare affiliation

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

{
    "created_epoch": "1138752000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1789516800000",
    "number": "1609847029",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "4411 MEDICAL DR STE 300",
            "city": "SAN ANTONIO",
            "state": "TX",
            "postal_code": "782293824",
            "telephone_number": "210-614-5400",
            "fax_number": "210-614-2413"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1139 E SONTERRA BLVD STE 520",
            "city": "SAN ANTONIO",
            "state": "TX",
            "postal_code": "782584347",
            "telephone_number": "210-490-6000",
            "fax_number": "210-490-4658"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1925 State Highway 46 W",
            "address_purpose": "LOCATION",
            "city": "New Braunfels",
            "state": "TX",
            "postal_code": "781325245",
            "country_code": "US",
            "telephone_number": "830-463-7000",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "1695 Interstate 35 S Ste 105",
            "address_purpose": "LOCATION",
            "city": "New Braunfels",
            "state": "TX",
            "postal_code": "781307465",
            "country_code": "US",
            "telephone_number": "830-643-7900",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "11355 Toepperwein Rd",
            "address_purpose": "LOCATION",
            "city": "Live Oak",
            "state": "TX",
            "postal_code": "782333000",
            "country_code": "US",
            "telephone_number": "830-643-7000",
            "fax_number": "830-629-2491",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "CHALLAPALLI",
        "first_name": "MADHU",
        "middle_name": "B",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-02-01",
        "last_updated": "2026-09-16",
        "certification_date": "2026-09-16",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RC0000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Cardiovascular Disease",
            "state": "TX",
            "license": "L0999",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "MEDICARE",
            "identifier": "TXB112469",
            "state": "TX"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "BCBS",
            "identifier": "8CM501",
            "state": "TX"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "MEDICARE RAILROAD",
            "identifier": "P00898228",
            "state": "TX"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "165060803",
            "state": "TX"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Steven Chalfin, MD
• Abhishek Challa
• Megana Reddy Challa
• Suman Challa, BDS, MSPH
• Suneetha Challagundla, MD
• Amanda Chamberlain, PHARM.D.
• Damian Rashad Chamberlain, MD
• Gary Chamberlain
• Lance David Chamberlain, PH.D.
• Thaddeus Miles Chamberlain, DDS

• Cardiovascular Disease Physician in San Antonio, TX
• Providers in San Antonio, TX by specialty
• Cardiovascular Disease Physician in Texas

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 16, 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.