Mary Isabel Alejo, AGACNP-BC

Primary specialty

Critical Care Medicine Nurse PractitionerTaxonomy code 363LC0200X

License

1230494 Issued in TX

Practice address

6720 Bertner Ave
Houston, TX 77030-2604

Phone

(713) 798-2222

NPI assigned

Mar 30, 2026

Last updated

Jun 19, 2026By 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 2

Addresses

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: No

Green means eligible to order or refer.

Enrollment records 1

Specialty

Nurse Practitioner

Education

Other, 2025

Medicare assignment

May accept Medicare assignment

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

State licenses

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.

• Baylor College of Medicine

  dba BCM Physicians

  • Ph.D. Medical Genetics
  • Houston, TX
  • NPI 1881026664
  Medicare reassignment

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

{
    "created_epoch": "1774828800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1781827200000",
    "number": "1245170406",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "12735 ARCOLA VALLEY CT",
            "city": "HOUSTON",
            "state": "TX",
            "postal_code": "770441770"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "6720 BERTNER AVE",
            "city": "HOUSTON",
            "state": "TX",
            "postal_code": "770302604",
            "telephone_number": "713-798-2222"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "12735 Arcola Valley Ct",
            "address_purpose": "LOCATION",
            "city": "Houston",
            "state": "TX",
            "postal_code": "770441770",
            "country_code": "US",
            "telephone_number": "832-405-2975",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "ALEJO",
        "first_name": "MARY",
        "middle_name": "ISABEL",
        "credential": "AGACNP-BC",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2026-03-30",
        "last_updated": "2026-06-19",
        "certification_date": "2026-06-19",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363LA2100X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Acute Care",
            "state": "TX",
            "license": "1230494",
            "primary": false
        },
        {
            "code": "363LC0200X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Critical Care Medicine",
            "state": "TX",
            "license": "1230494",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Irene De Los Reyes Alegre, MS, CPNP, RNC, NNP
• Alegria Dental Care PLLC
• Alejandro F Delgado MD PA
• Alejandro N Bugnone MD, P.a.
• Gabriela Alejo
• Brayann Oscar Aleman, DMD, MSD, FAACS
• Kristina Aleman, ACNP
• Bader A Alenzi, MD
• Alere MD
• Alert Medical Response Inc

• Critical Care Medicine Nurse Practitioner in Houston, TX
• Providers in Houston, TX by specialty
• Critical Care Medicine Nurse Practitioner in Texas

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 19, 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.
• 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.