Individual provider Active NPI

Marcel Alejandro De Dios, PH.D.

  • Psychologist
  • Houston, TX
National Provider Identifier
1649595315
Registry record updated Jun 27, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
PsychologistTaxonomy code 103T00000X
License
36745 Issued in TX
Practice address
6550 Fannin Street
Smith Tower, Suite 1201
Houston, TX 77030
Phone
(713) 441-3372
NPI assigned
Apr 6, 2010
Sex
Male
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on Jun 27, 2025

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Psychologist 103T00000X 36745 TX Primary

Addresses

Primary practice location

6550 Fannin Street
Smith Tower, Suite 1201
Houston, TX 77030

Mailing address

5139 Jackwood St
Houston, TX 77096-1415
Phone (339) 235-7706

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in TX
Eligible to order & refer
  • Part B services: Yes
  • Medical equipment: Yes
  • Home health: No
  • Power mobility devices: No
  • Hospice: No
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20251223004089 TX Practitioner - Clinical Psychologist 4789179037 Reassigns benefits to 2 organizations

Care Compare profile

Medicare Care Compare
Specialty
Clinical Psychologist
Education
Other, 2007
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
TMH Physician Associates PLLCGroup PAC ID 4486711744, 1,881 clinicians

Practice addresses (Care Compare)

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

6550 Fannin St
Houston, TX 77030-2740

7575 San Felipe St
Suite 155
Houston, TX 77063-1777
Phone (713) 266-9955

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
36745TXMDPharmacist

Practice roles

OrganizationSpecialtyStatusNew patients
Houston Methodist Specialty Physicians CurrentSince Mar 1, 2026 Accepting new patients
TMH Physician Associates PLLC CurrentSince Oct 3, 2025 Accepting new patients
TMH Physician Associates PLLC CurrentSince Oct 3, 2025 Accepting new patients

Locations

7575 San Felipe St
Ste 155
Houston, TX 77063
Phone (713) 266-9955

6550 Fannin St
Ste 1201
Houston, TX 77030
Phone (713) 441-3372

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

Organizations & group practices 3

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.

NPI Registry JSON

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

{
    "created_epoch": "1270512000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1750982400000",
    "number": "1649595315",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "5139 JACKWOOD ST",
            "city": "HOUSTON",
            "state": "TX",
            "postal_code": "770961415",
            "telephone_number": "339-235-7706"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "6550 FANNIN STREET",
            "address_2": "SMITH TOWER, SUITE 1201",
            "city": "HOUSTON",
            "state": "TX",
            "postal_code": "77030",
            "telephone_number": "713-441-3372"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "DE DIOS",
        "first_name": "MARCEL",
        "middle_name": "ALEJANDRO",
        "name_prefix": "Dr.",
        "credential": "PH.D.",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2010-04-06",
        "last_updated": "2025-06-27",
        "certification_date": "2025-06-06",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "103T00000X",
            "taxonomy_group": "",
            "desc": "Psychologist",
            "state": "TX",
            "license": "36745",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Houston, TX

Sources for this page

Verify at the official NPI Registry.