Guillermo M Aldave Orzaiz, MD, PHD

Primary specialty

Neurological Surgery PhysicianTaxonomy code 207T00000X

License

T1276 Issued in TX

Practice address

6701 Fannin St
Houston, TX 77030-2608

Phone

(832) 822-1282

NPI assigned

Jul 12, 2016

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 1

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

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine, Doctor of Philosophy

State licenses

Practice roles

Locations

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.

• Physicians Referral Service

  • Multi-Specialty Clinic/Center
  • Houston, TX
  • NPI 1073574810
  Medicare reassignment NPD
• Texas Children's Physician Group

  • Pediatrics Physician
  • Houston, TX
  • NPI 1861675506
  Medicare reassignment NPD
• Texas Children's Hospital

  • Children's Hospital
  • Houston, TX
  • NPI 1477643690
  NPD (past)

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

{
    "created_epoch": "1468281600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1772582400000",
    "number": "1255783411",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "6701 FANNIN ST",
            "city": "HOUSTON",
            "state": "TX",
            "postal_code": "770302608",
            "telephone_number": "832-822-1282"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "6701 FANNIN ST",
            "city": "HOUSTON",
            "state": "TX",
            "postal_code": "770302608",
            "telephone_number": "832-822-1282"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1515 Holcombe Blvd",
            "address_purpose": "LOCATION",
            "city": "Houston",
            "state": "TX",
            "postal_code": "770304000",
            "country_code": "US",
            "telephone_number": "713-792-6161",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "ALDAVE ORZAIZ",
        "first_name": "GUILLERMO",
        "middle_name": "M",
        "credential": "MD, PHD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2016-07-12",
        "last_updated": "2026-03-04",
        "certification_date": "2026-03-04",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207T00000X",
            "taxonomy_group": "",
            "desc": "Neurological Surgery",
            "state": "TX",
            "license": "T1276",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "TEXAS MEDICAL LICENSE (VISSITING PROFESSOR TEMPORARY LICENSE)",
            "identifier": "45307",
            "state": "TX"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Stephanie H Aldama, MD
• Ivette Aldana Campos, LPC
• Maria Aldana
• Christine Aldape, MPH, PA-C
• Clarissa N Aldape, MD
• Tamarah Aldawoodi, M.D
• Sara Aldeeb, PHARMD
• Mohammed Aldehaim, MD, FRCPC
• Brooke Alden, PA-C
• Ahmed Alderazi, MB, BCH, BAO

• Neurological Surgery Physician in Houston, TX
• Providers in Houston, TX by specialty
• Neurological Surgery Physician in Texas

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Mar 4, 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.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.