Nithya K. Iyer, M.D.

Primary specialty

Critical Care Medicine (Internal Medicine) PhysicianTaxonomy code 207RC0200X

License

P3541 Issued in TX

Practice address

3409 Worth St Ste 420
Dallas, TX 75246-2052

Phone

(214) 820-2346

Fax

(214) 820-9818

NPI assigned

Dec 1, 2006

Last updated

Nov 20, 2025By the provider in NPPES

Sex

Female

Sole proprietor

No

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

Specialties & licenses 3

Addresses

Other identifiers 4

Medicare fee-for-service enrollment

Enrolled in TX

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 1

Specialty

Critical Care (Intensivists)Also: Internal Medicine, Pulmonary Disease

Education

Other, 1999

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Healthtexas Provider NetworkGroup PAC ID 1355254210, 2,535 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Baylor University Medical Center Hospital, Dallas, TX, CCN 450021
• Baylor Scott & White Heart & Vascular Hospital - Dallas Hospital, Dallas, TX, CCN 450851

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: niyer226026@direct.sw.org

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.

• Healthtexas Provider Network

  • Family Medicine Physician
  • Dallas, TX
  • NPI 1760488936

  Internal Medicine

  Medicare reassignment Care Compare group NPD
• Healthtexas Provider Network

  dba Symmetry Anesthesia

  • Anesthesiology Physician
  • Lakeway, TX
  • NPI 1104714583
  NPD
• Healthtexas Provider Network

  • Family Medicine Physician
  • Plano, TX
  • NPI 1003811639
  NPD (past)
• Fredric N. Jackson MD Inc PS

  • Specialist
  • Burien, WA
  • NPI 1144248014
  NPD (past)

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

• Baylor University Medical Center

  • General Acute Care Hospital
  • Dallas, TX
  • NPI 1447250253
  Care Compare affiliation
• Texas Heart Hospital of the Southwest LLC

  dba Baylor Scott & White Heart and Vascular Hospital - Dallas

  • General Acute Care Hospital
  • Dallas, TX
  • NPI 1609855139
  Care Compare affiliation

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

{
    "created_epoch": "1164931200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1763596800000",
    "number": "1912075458",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "3409 WORTH ST STE 420",
            "city": "DALLAS",
            "state": "TX",
            "postal_code": "752462052",
            "telephone_number": "214-820-2346",
            "fax_number": "214-820-9818"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "3409 WORTH ST STE 420",
            "city": "DALLAS",
            "state": "TX",
            "postal_code": "752462052",
            "telephone_number": "214-820-2346",
            "fax_number": "214-820-9818"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "IYER",
        "first_name": "NITHYA",
        "middle_name": "K.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2006-12-01",
        "last_updated": "2025-11-20",
        "certification_date": "2025-11-20",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "TX",
            "license": "P3541",
            "primary": false
        },
        {
            "code": "207RP1001X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Pulmonary Disease",
            "state": "TX",
            "license": "P3541",
            "primary": false
        },
        {
            "code": "207RC0200X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Critical Care Medicine",
            "state": "TX",
            "license": "P3541",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "481122010",
            "state": "MI"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "BLUE CROSS-BLUE CROSS",
            "identifier": "700H262220",
            "state": null
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "COMMERCIAL-COMMERCIAL NUMBER",
            "identifier": "NI086741",
            "state": null
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "CHAMPUS-CHAMPUS",
            "identifier": "NI086741",
            "state": null
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Tulasi Mohan Iyengar
• Atiriya Iyer
• Ayush G Iyer
• Manya Iyer
• Medha Iyer, M.D., PH.D., M.P.H.
• Ruchita U Iyer
• Sanjana Iyer
• Prudencia M Iyok
• John Oluwatobi Iyun
• Amin Izadpanah

• Critical Care Medicine (Internal Medicine) Physician in Dallas, TX
• Providers in Dallas, TX by specialty
• Critical Care Medicine (Internal Medicine) Physician in Texas

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Nov 20, 2025; 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.