Active NPI
Phillip E Mason, MD
- Critical Care Medicine (Internal Medicine) Physician
- San Antonio, TX
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Critical Care Medicine (Internal Medicine) Physician
- License
- L5039
- 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
Registry information is reported by the provider to CMS and is not verified. About this source
Specialties & licenses 2
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| 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
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 154188002 | Medicaid | TX | |
| 2493798 | Medicaid | OH | |
| 154188004 | Medicaid | TX | |
| 154188003 | Medicaid | TX |
Other names 1
- Phillip Mason
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
Enrollment records 1
Care Compare profile
Medicare Care Compare- Specialty
- Critical Care (Intensivists)
- Education
- University of Texas Southwestern Medical School at Dallas, 1999
- Medicare assignment
- Accepts the Medicare-approved amount as payment in full
- Group practices
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
| License | State | Type | Specialty |
|---|---|---|---|
| 35.093611 | OH | MD | Emergency Medical Services (Emergency Medicine) Physician |
| L5039 | TX | MD | Critical Care Medicine (Internal Medicine) Physician |
| 22798 | SC | MD | Pediatric Nurse Practitioner |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Community Medicine Associates | Current | Accepting new patients | |
| TMH Physician Associates PLLC | Current | Accepting new patients | |
| University of Texas Health Science Center at San Antonio | Current | Accepting new patients | |
| The University of Texas Health Science Center at San Antonio | Current | Accepting new patients | |
| Questcare Medical Services, PLLC | Emergency Medicine | Current | Accepting new patients |
| Texas Ips LLC | Critical Care Medicine | Current | Accepting new patients |
| Gulf Coast Intensivists, PLLC | Critical Care Medicine | Current | Accepting new patients |
| Intensivist Medicine Services of TX, PLLC | Critical Care Medicine | Current | Accepting new patients |
| Questcare Medical Services, PLLC | Emergency Medicine | Current | Accepting new patients |
| TMH Physician Associates PLLC | Critical Care Medicine | Current | 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.
-
dba University Medicine Associates
- Family Medicine Physician
- San Antonio, TX
- NPI 1245313329
-
- Critical Care Medicine (Internal Medicine) Physician
- Corpus Christi, TX
- NPI 1104509199
-
- Critical Care Medicine (Internal Medicine) Physician
- Houston, TX
- NPI 1790478444
-
- Emergency Medicine Physician
- Dallas, TX
- NPI 1912059247
-
- Ophthalmology Physician
- Houston, TX
- NPI 1275779225
Critical Care Medicine
-
dba UT Health Physicians
- Internal Medicine Physician
- San Antonio, TX
- NPI 1720051717
-
dba UT Health San Antonio Multispecialty & Research Hospital
- General Acute Care Hospital
- San Antonio, TX
- NPI 1326829904
-
- Orthopaedic Surgery Physician
- Spring, TX
- NPI 1043061351
-
- Specialist
- Houston, TX
- NPI 1437242617
-
- Emergency Medical Services (Emergency Medicine) Physician
- Abilene, TX
- NPI 1740278993
Hospital & facility affiliations 1
Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.
-
dba University Health
- General Acute Care Hospital
- San Antonio, TX
- NPI 1821011248
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
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 11, 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.