Individual provider Active NPI

Vellaiappan Somasundaram, MD

  • Internal Medicine Physician
  • Frisco, TX
National Provider Identifier
1891745386
Registry record updated May 18, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Internal Medicine PhysicianTaxonomy code 207R00000X
License
35436 Issued in KY
Practice address
8195 Custer Rd Ste 110
Frisco, TX 75035-3195
Phone
(214) 666-6259
NPI assigned
May 12, 2006
Sex
Male
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on May 18, 2026

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

Specialties & licenses 3

Specialty (taxonomy)CodeLicenseStatePrimary
Emergency Medicine Physician 207P00000X 35436 KY
Internal Medicine Physician 207R00000X 35436 KY Primary
Internal Medicine PhysicianGroup: 193400000X SINGLE SPECIALTY GROUP 207R00000X T9601 TX

Addresses

Primary practice location

8195 Custer Rd Ste 110
Frisco, TX 75035-3195

Mailing address

230 O Connor Ridge Blvd Ste 110
Irving, TX 75038-6513
Phone (214) 666-6259

Other practice location 1

1630 W Prosper Trl Ste 430
Prosper, TX 75078-3742
Phone (214) 666-6259

Other identifiers 4

IdentifierTypeStateIssuer
T9601MedicaidTX
S0413253OtherWVMEDICARE
64013253MedicaidKY
6000592001OtherWVMEDICAID

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in KY, TX2 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

Enrollment IDStateProvider typePAC IDDetails
I20031208000969 KY Practitioner - Internal MedicinePractitioner - Emergency Medicine 4284530627 Reassigns benefits to 2 organizations
I20250814002828 TX Practitioner - Family Practice 4284530627 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Internal MedicineAlso: Emergency Medicine
Education
Other, 1986
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Appalachian Regional Healthcare IncGroup PAC ID 0840107835, 301 clinicians
PHP Ins TX PLLCGroup PAC ID 5698194702, 17 clinicians

Practice addresses (Care Compare)

306 Hospital Dr
Suite 204
South Williamson, KY 41503-4096
Phone (606) 237-5800

8195 Custer Rd
Frisco, TX 75035-3190
Phone (214) 666-6259

Hospital & facility affiliations

  • Tug Valley Arh Regional Medical Center Hospital, South Williamson, KY, CCN 180069
  • Pikeville Medical Center Hospital, Pikeville, KY, CCN 180044

Merit-based Incentive Payment System (MIPS)

Final score
82.15 of 100Reported as apm
Quality
47.14
Promoting interoperability
100
Improvement activities
40

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Medicine

State licenses

LicenseStateTypeSpecialty
T9601TXMDInternal Medicine Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Williamson Emergency Physicians LLC Single Specialty CurrentSince Jul 1, 2007 Accepting new patients
Appalachian Regional Healthcare, Inc Single Specialty Current Accepting new patients
PHP Ins TX PLLC Single Specialty CurrentSince Jul 2, 2025 Accepting new patients
Appalachian Regional Healthcare, Inc. Single Specialty Past Accepting new patients
Appalachian Regional Healthcare, Inc. Single Specialty Past Accepting new patients
Marshall Emergency Services Associates, PLLC Single Specialty Past Accepting new patients
Passion Health Physicians PLLC Internal Medicine PastSince Apr 6, 2025 Accepting new patients

Locations

260 Hospital Dr
South Williamson, KY 41503
Phone (606) 237-1700

214 Hospital Rd
Whitesburg, KY 41858
Phone (606) 633-3631

8195 Custer Rd
Ste 110
Frisco, TX 75035
Phone (469) 830-8835

8195 Custer Rd
Frisco, TX 75035
Phone (940) 241-1215

230 O Connor Ridge Blvd
#110
Irving, TX 75038

230 O Connor Ridge Blvd
Ste 110
Irving, TX 75038

27045 E University Dr
Ste 1C
Little Elm, TX 76227
Phone (214) 597-9905

1630 W Prosper Trl
Ste 430
Prosper, TX 75078

Interoperability endpoints

  • Direct secure messaging: vellaiappansomasundaram@arh.medalliesdirect.net

Organizations & group practices 7

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.

Hospital & facility affiliations 2

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

NPI Registry JSON

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

{
    "created_epoch": "1147392000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1779062400000",
    "number": "1891745386",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "230 O CONNOR RIDGE BLVD STE 110",
            "city": "IRVING",
            "state": "TX",
            "postal_code": "750386513",
            "telephone_number": "214-666-6259"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "8195 CUSTER RD STE 110",
            "city": "FRISCO",
            "state": "TX",
            "postal_code": "750353195",
            "telephone_number": "214-666-6259"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1630 W Prosper Trl Ste 430",
            "address_purpose": "LOCATION",
            "city": "Prosper",
            "state": "TX",
            "postal_code": "750783742",
            "country_code": "US",
            "telephone_number": "214-666-6259",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "SOMASUNDARAM",
        "first_name": "VELLAIAPPAN",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2006-05-12",
        "last_updated": "2026-05-18",
        "certification_date": "2026-05-18",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "KY",
            "license": "35436",
            "primary": false
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "KY",
            "license": "35436",
            "primary": true
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "193400000X SINGLE SPECIALTY  GROUP",
            "desc": "Internal Medicine",
            "state": "TX",
            "license": "T9601",
            "primary": false
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "T9601",
            "state": "TX"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "MEDICARE",
            "identifier": "S0413253",
            "state": "WV"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "64013253",
            "state": "KY"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "MEDICAID",
            "identifier": "6000592001",
            "state": "WV"
        }
    ],
    "endpoints": [],
    "other_names": []
}

Other providers in Frisco, TX

Sources for this page

Verify at the official NPI Registry.