Individual provider Active NPI

Oscar Andres Guillama, MD

  • Diagnostic Radiology Physician
  • Houston, TX
National Provider Identifier
1003378977
Registry record updated Apr 28, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Diagnostic Radiology PhysicianTaxonomy code 2085R0202X
License
BP10073826 Issued in TX
Practice address
1400 Pressler St
Houston, TX 77030-3722
Phone
(713) 792-6182
NPI assigned
Apr 1, 2019
Sex
Male
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on Apr 28, 2026

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

Specialties & licenses 3

Specialty (taxonomy)CodeLicenseStatePrimary
Diagnostic Radiology PhysicianGroup: 193400000X SINGLE SPECIALTY GROUP 2085R0202X BP10073826 TX Primary
Student in an Organized Health Care Education/Training Program 390200000X
General Practice Physician 208D00000X 34923R PR

Addresses

Primary practice location

1400 Pressler St
Houston, TX 77030-3722

Mailing address

HC 3 Box 11102
Camuy, PR 00627-9650
Phone (787) 800-7661

Other practice location 1

San Juan City Hospital
Bo. Monacillos, Centro Medico de PR
Rio Piedras, PR 00917
Phone (787) 480-2791

Other practice location 2

Autopista Luis A Ferre Salida 21 Carr 12
Urb Turabo Gardens
Caguas, PR 00726
Phone (787) 743-3038 ext. 276

Other practice location 3

1 Baylor Plz
Houston, TX 77030-3498
Phone (713) 798-4951

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: Yes
  • Power mobility devices: Yes
  • Hospice: Yes
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20260318000148 TX Practitioner - Diagnostic Radiology 8022592195 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Diagnostic Radiology
Education
San Juan Bautista School of Medicine, 2020
Medicare assignment
May accept Medicare assignment

Practice addresses (Care Compare)

12554 Riata Vista Cir
FL 1
Austin, TX 78727-7165

5650 Paul Blazer Pkwy
Suite 104
Dublin, OH 43017-3562

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
BP10073826TXMDDiagnostic Radiology Physician
34923RPRMDGeneral Practice Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Shelin Agrawal and Hyer PLLC Single Specialty CurrentSince Apr 1, 2026 Accepting new patients

Organizations & group practices 1

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": "1554076800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1777334400000",
    "number": "1003378977",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "HC 3 BOX 11102",
            "city": "CAMUY",
            "state": "PR",
            "postal_code": "006279650",
            "telephone_number": "787-800-7661"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1400 PRESSLER ST",
            "city": "HOUSTON",
            "state": "TX",
            "postal_code": "770303722",
            "telephone_number": "713-792-6182"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "San Juan City Hospital",
            "address_2": "Bo. Monacillos, Centro Medico de PR",
            "address_purpose": "LOCATION",
            "city": "Rio Piedras",
            "state": "PR",
            "postal_code": "00917",
            "country_code": "US",
            "telephone_number": "787-480-2791",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "Autopista Luis A Ferre Salida 21 Carr 12",
            "address_2": "Urb Turabo Gardens",
            "address_purpose": "LOCATION",
            "city": "Caguas",
            "state": "PR",
            "postal_code": "00726",
            "country_code": "US",
            "telephone_number": "787-743-3038 x276",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "1 Baylor Plz",
            "address_purpose": "LOCATION",
            "city": "Houston",
            "state": "TX",
            "postal_code": "770303498",
            "country_code": "US",
            "telephone_number": "713-798-4951",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "GUILLAMA",
        "first_name": "OSCAR",
        "middle_name": "ANDRES",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2019-04-01",
        "last_updated": "2026-04-28",
        "certification_date": "2026-04-28",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2085R0202X",
            "taxonomy_group": "193400000X SINGLE SPECIALTY  GROUP",
            "desc": "Radiology, Diagnostic Radiology",
            "state": "TX",
            "license": "BP10073826",
            "primary": true
        },
        {
            "code": "390200000X",
            "taxonomy_group": "",
            "desc": "Student in an Organized Health Care Education/Training Program",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "208D00000X",
            "taxonomy_group": "",
            "desc": "General Practice",
            "state": "PR",
            "license": "34923R",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Houston, TX

Sources for this page

Verify at the official NPI Registry.