NPIMap

Individual provider Active NPI

Michael Nessim Youssef, MD

  • Neurology Physician
  • Houston, TX
National Provider Identifier
1790102028
Registry record updated Mar 27, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Neurology PhysicianTaxonomy code 2084N0400X
License
S1024 Issued in TX
Practice address
6445 Main St
Houston, TX 77030-1502
Phone
(713) 441-9948
Fax
(713) 441-8791
NPI assigned
Mar 25, 2014
Last updated
Mar 27, 2026By the provider in NPPES
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Mar 27, 2026

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Medical Oncology Physician 207RX0202X S1024 TX
Neurology Physician 2084N0400X S1024 TX Primary

Addresses

Primary practice location

6445 Main St
Houston, TX 77030-1502

Mailing address

6445 Main St
Houston, TX 77030-1502
Phone (713) 441-9948

Other practice location 1

6202 Harry Hines Blvd
Dallas, TX 75390-7320
Phone (214) 645-4673

Other identifiers 2

IdentifierTypeStateIssuer
401965501MedicaidTX
401965502OtherTXMEDICAID-CSHCN

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in TX
Eligible to order & refer
  • Part B services
  • Medical equipment
  • Home health
  • Power mobility devices
  • Hospice
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20190917002257 TX Practitioner - Hematology/OncologyPractitioner - Neurology 6709178320 Reassigns benefits to 2 organizations

Care Compare profile

Medicare Care Compare
Specialty
Hematology/Oncology
Education
Medical University of South Carolina College of Medicine, 2014
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices
Houston Methodist Specialty PhysiciansGroup PAC ID 5193239796, 1,498 clinicians

Practice addresses (Care Compare)

5303 Harry Hines Blvd
Suite 4
Dallas, TX 75390-7208
Phone (214) 645-0624

6445 Main St
Suite 2500
Houston, TX 77030-1502
Phone (713) 441-3150

6565 Fannin St
Houston, TX 77030-2703

Hospital & facility affiliations

Merit-based Incentive Payment System (MIPS)

Final score
82.87 of 100Reported as group
Quality
70.15
Promoting interoperability
100
Improvement activities
40
Cost
72.75

National Provider Directory

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

Practice roles

OrganizationSpecialtyStatusNew patients
The University of Texas Southwestern Medical Center at Dallas CurrentSince Oct 1, 2020 Accepting new patients
University of Texas Southwestern Medical Center at Dallas Neurology CurrentSince Oct 1, 2020 Accepting new patients
University of Texas Southwestern Medical Center at Dallas Current Accepting new patients
TMH Physician Associates PLLC Past Accepting new patients
TMH Physician Associates PLLC Past Accepting new patients

Locations

2201 Inwood Rd
Dallas, TX 75235
Phone (214) 645-2563

5303 Harry Hines Blvd
Fl 4
Dallas, TX 75390

6202 Harry Hines Blvd
Dallas, TX 75390
Phone (214) 590-2218

3000 N Interstate 35
Denton, TX 76201
Phone (469) 303-3591

5303 Harry Hines Blvd
Ut Southwest Medical Center, TX 75390
Phone (214) 645-2300

5323 Harry Hines Blvd
Ut Southwest Medical Center, TX 75390

Organizations & group practices 6

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.

Hospital & facility affiliations 46

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

View all 46

NPI Registry JSON

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

{
    "created_epoch": "1395705600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1774569600000",
    "number": "1790102028",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "6445 MAIN ST",
            "city": "HOUSTON",
            "state": "TX",
            "postal_code": "770301502",
            "telephone_number": "713-441-9948",
            "fax_number": "713-441-8791"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "6445 MAIN ST",
            "city": "HOUSTON",
            "state": "TX",
            "postal_code": "770301502",
            "telephone_number": "713-441-9948",
            "fax_number": "713-441-8791"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "6202 Harry Hines Blvd",
            "address_purpose": "LOCATION",
            "city": "Dallas",
            "state": "TX",
            "postal_code": "753907320",
            "country_code": "US",
            "telephone_number": "214-645-4673",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "YOUSSEF",
        "first_name": "MICHAEL",
        "middle_name": "NESSIM",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2014-03-25",
        "last_updated": "2026-03-27",
        "certification_date": "2026-03-27",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RX0202X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Medical Oncology",
            "state": "TX",
            "license": "S1024",
            "primary": false
        },
        {
            "code": "2084N0400X",
            "taxonomy_group": "",
            "desc": "Psychiatry & Neurology, Neurology",
            "state": "TX",
            "license": "S1024",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "401965501",
            "state": "TX"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "MEDICAID-CSHCN",
            "identifier": "401965502",
            "state": "TX"
        }
    ],
    "endpoints": [],
    "other_names": []
}

Other providers in Houston, TX

Sources for this page

Verify at the official NPI Registry.