Individual provider Active NPI

Phillip E Mason, MD

  • Critical Care Medicine (Internal Medicine) Physician
  • San Antonio, TX
National Provider Identifier
1952390841
Registry record updated Jun 11, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Critical Care Medicine (Internal Medicine) PhysicianTaxonomy code 207RC0200X
License
L5039 Issued in TX
Practice address
4502 Medical Dr
San Antonio, TX 78229-4402
Phone
(210) 358-4000
NPI assigned
Oct 14, 2005
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jun 11, 2026

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Emergency Medicine Physician 207P00000X L5039 TX
Critical Care Medicine (Internal Medicine) Physician 207RC0200X L5039 TX Primary

Addresses

Primary practice location

4502 Medical Dr
San Antonio, TX 78229-4402

Mailing address

4502 Medical Dr
San Antonio, TX 78229-4402
Phone (210) 358-4000

Other identifiers 4

IdentifierTypeStateIssuer
154188002MedicaidTX
2493798MedicaidOH
154188004MedicaidTX
154188003MedicaidTX

Other names 1

  • Phillip Mason Other name

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
I20130501000635 TX Practitioner - Critical Care (Intensivists)Practitioner - Internal MedicinePractitioner - Emergency Medicine 8820166341 Reassigns benefits to 7 organizations

Care Compare profile

Medicare Care Compare
Specialty
Critical Care (Intensivists)Also: Emergency Medicine
Education
University of Texas Southwestern Medical School at Dallas, 1999
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Community Medicine AssociatesGroup PAC ID 7719979509, 590 clinicians

Practice addresses (Care Compare)

4502 Medical Dr
San Antonio, TX 78229-4402
Phone (210) 358-2015

Hospital & facility affiliations

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
35.093611OHMDEmergency Medical Services (Emergency Medicine) Physician
L5039TXMDCritical Care Medicine (Internal Medicine) Physician
22798SCMDPediatric Nurse Practitioner

Practice roles

OrganizationSpecialtyStatusNew patients
Community Medicine Associates CurrentSince Oct 20, 2022 Accepting new patients
TMH Physician Associates PLLC CurrentSince Oct 2, 2020 Accepting new patients
University of Texas Health Science Center at San Antonio CurrentSince Nov 7, 2022 Accepting new patients
The University of Texas Health Science Center at San Antonio CurrentSince Nov 7, 2022 Accepting new patients
Questcare Medical Services, PLLC Emergency Medicine CurrentSince Oct 9, 2017 Accepting new patients
Texas Ips LLC Critical Care Medicine CurrentSince Oct 15, 2015 Accepting new patients
Gulf Coast Intensivists, PLLC Critical Care Medicine CurrentSince Sep 1, 2023 Accepting new patients
Intensivist Medicine Services of TX, PLLC Critical Care Medicine CurrentSince Aug 1, 2023 Accepting new patients
Questcare Medical Services, PLLC Emergency Medicine CurrentSince Oct 9, 2017 Accepting new patients
TMH Physician Associates PLLC Critical Care Medicine CurrentSince Oct 2, 2020 Accepting new patients
Texas Midwest Emergency Physicians PA Emergency Medical Services Past Accepting new patients
Cardiovascular Care Providers, Inc. Past Accepting new patients
Vanguard Medical Emergency Medicine Past Accepting new patients

Locations

100 E Alton Gloor Blvd
Brownsville, TX 78526
Phone (956) 350-7000

100 E Alton Gloor Blvd
#A
Brownsville, TX 78526
Phone (956) 350-7000

600 Elizabeth St
Corpus Christi, TX 78404
Phone (361) 325-2511

7777 Forest Ln
Dallas, TX 75230
Phone (972) 566-7283

1313 Hermann Dr
Houston, TX 77004
Phone (713) 527-5000

710 FM 1960 Rd W
Houston, TX 77090
Phone (281) 440-1000

6565 Fannin St
Ste 1003
Houston, TX 77030
Phone (713) 441-1000

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

3901 W 15th St
Plano, TX 75075
Phone (972) 519-1115

21 Spurs Ln
#230B
San Antonio, TX 78240

7703 Floyd Curl Dr
San Antonio, TX 78229
Phone (210) 450-3700

4458 Medical Dr
Ste 505
San Antonio, TX 78229

1310 McCullough Ave
San Antonio, TX 78212
Phone (210) 208-2200

8300 Floyd Curl Dr
San Antonio, TX 78229
Phone (210) 450-9300

4499 Medical Dr
#150
San Antonio, TX 78229
Phone (210) 614-8181

4502 Medical Dr
San Antonio, TX 78229
Phone (210) 358-3555

903 W Martin St
#492
San Antonio, TX 78207
Phone (210) 358-3441

16605 Southwest Fwy
Ste 400
Sugar Land, TX 77479
Phone (281) 275-0800

Organizations & group practices 13

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.

View all 13

Hospital & facility affiliations 1

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

NPI Registry JSON

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

{
    "created_epoch": "1129248000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1781136000000",
    "number": "1952390841",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "4502 MEDICAL DR",
            "city": "SAN ANTONIO",
            "state": "TX",
            "postal_code": "782294402",
            "telephone_number": "210-358-4000"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "4502 MEDICAL DR",
            "city": "SAN ANTONIO",
            "state": "TX",
            "postal_code": "782294402",
            "telephone_number": "210-358-4000"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MASON",
        "first_name": "PHILLIP",
        "middle_name": "E",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2005-10-14",
        "last_updated": "2026-06-11",
        "certification_date": "2026-06-11",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "TX",
            "license": "L5039",
            "primary": false
        },
        {
            "code": "207RC0200X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Critical Care Medicine",
            "state": "TX",
            "license": "L5039",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "154188002",
            "state": "TX"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "2493798",
            "state": "OH"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "154188004",
            "state": "TX"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "154188003",
            "state": "TX"
        }
    ],
    "endpoints": [],
    "other_names": [
        {
            "first_name": "PHILLIP",
            "last_name": "MASON",
            "credential": "MD",
            "code": "5",
            "type": "Other Name"
        }
    ]
}

Other providers in San Antonio, TX

Sources for this page

Verify at the official NPI Registry.