Individual provider Active NPI

Shannon Anjelica Markus, M.D.

  • Emergency Medicine Physician
  • Austin, TX
National Provider Identifier
1174057889
Registry record updated Nov 5, 2023
On this page

Key facts

NPPES NPI Registry
Primary specialty
Emergency Medicine PhysicianTaxonomy code 207P00000X
License
T1456 Issued in TX
Practice address
1500 Red River St
Austin, TX 78701-1918
Phone
(512) 324-7010
NPI assigned
Apr 19, 2017
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Nov 5, 2023

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Emergency Medicine Physician 207P00000X T1456 TX Primary

Addresses

Primary practice location

1500 Red River St
Austin, TX 78701-1918

Mailing address

4535 Dressler Rd NW
Canton, OH 44718-2545

Other names 1

  • Dr. Shannon Anjelica Markus 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
I20210720000525 TX Practitioner - Emergency Medicine 6002142098 Reassigns benefits to 10 organizations

Care Compare profile

Medicare Care Compare
Specialty
Emergency Medicine
Education
Perelman School of Med at the University of Pennsylvania, 2017
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Emergency Medicine Services of TX, PLLCGroup PAC ID 3375909351, 374 clinicians
Travis County Emergency Physicians PAGroup PAC ID 0840289468, 289 clinicians
Longhorn Emergency Medical Associates PAGroup PAC ID 4486971041, 149 clinicians

Practice addresses (Care Compare)

3154 SE Military Dr
Suite 103 Methodist ER City Base
San Antonio, TX 78223-3975
Phone (210) 757-1200

3759 FM 1488 Rd
Suite 500
The Woodlands, TX 77384-4178
Phone (936) 270-4750

919 E 32ND St
St David'S Med Ctr
Austin, TX 78705-2703
Phone (830) 997-4353

Hospital & facility affiliations

  • Ascension Seton Southwest Hospital, Austin, TX, CCN 450865
  • Ascension Seton Northwest Hospital, Austin, TX, CCN 450867
  • North Austin Medical Center Hospital, Austin, TX, CCN 450809
  • Dell Seton Med Center at the University of TX Hospital, Austin, TX, CCN 450124

National Provider Directory

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

Practice roles

OrganizationSpecialtyStatusNew patients
Longhorn Emergency Medical Associates PA Emergency Medicine CurrentSince Dec 1, 2025 Accepting new patients
Texas ER Group PLLC Emergency Medicine CurrentSince Jan 25, 2024 Accepting new patients
Comal Emergency Physicians, PLLC Emergency Medicine CurrentSince Mar 24, 2025 Accepting new patients
Travis County Emergency Physicians PA Emergency Medicine CurrentSince Aug 20, 2021 Accepting new patients
Altus Exceptional Physician Group PLLC Emergency Medicine CurrentSince Jan 25, 2024 Accepting new patients
Emergency Medicine Services of TX, PLLC Emergency Medicine CurrentSince Nov 10, 2024 Accepting new patients
Emergency Associates of Central Texas PA Emergency Medicine CurrentSince Aug 1, 2021 Accepting new patients
Sound Physicians Emergency Medicine of Texas PLLC Emergency Medicine CurrentSince Dec 15, 2024 Accepting new patients
Austin ER Associates PLLC Emergency Medicine CurrentSince Jul 1, 2024 Accepting new patients
Lakeway Era Acquistion Partners LLC Past Accepting new patients
Westlake Complete Care LLC Past Accepting new patients

Locations (25 of 29)

4535 Dressler Rd NW
Canton, OH 44718
Phone (330) 994-4409

2000 Health Park Dr
Brentwood, TN 37027
Phone (615) 372-5426

7900 Ranch Road 1826
Austin, TX 78737
Phone (512) 324-5305

1500 Red River St
Austin, TX 78701
Phone (512) 324-0150

13435 N US Highway 183
Ste 311
Austin, TX 78750
Phone (512) 614-1200

11113 Research Blvd
Austin, TX 78759
Phone (512) 324-1125

919 E 32nd St
Austin, TX 78705
Phone (512) 343-2466

225 E Parkwood Ave
Friendswood, TX 77546
Phone (281) 549-9400

2615 Southwest Fwy
Ste 140
Houston, TX 77098
Phone (713) 441-2779

1535 West Loop S
Ste 300
Houston, TX 77027
Phone (713) 961-0423

1535 West Loop S
Ste 450
Houston, TX 77027
Phone (832) 219-3833

1275 Marvin Hancock Dr
Jasper, TX 75951
Phone (409) 384-1951

2201 Clear Creek Rd
Killeen, TX 76549
Phone (254) 519-8185

6001 Kyle Pkwy
Kyle, TX 78640
Phone (512) 504-5000

1310 E League City Pkwy
League City, TX 77573
Phone (346) 427-5050

220 Blanco St
Ste 2
Lumberton, TX 77657
Phone (409) 755-2273

244 Creekside Xing
New Braunfels, TX 78130
Phone (830) 426-7700

11100 Shadow Creek Pkwy
Pearland, TX 77584
Phone (713) 770-7000

11525 Broadway St
Pearland, TX 77584
Phone (713) 363-8020

3600 Gates Blvd
Port Arthur, TX 77642
Phone (409) 985-7431

2400 Round Rock Ave
Round Rock, TX 78681
Phone (512) 255-6066

201 Seton Pkwy
Round Rock, TX 78665
Phone (512) 324-1010

3154 SE Military Dr
Ste 103
San Antonio, TX 78223
Phone (210) 337-0911

12805 W Interstate 10
San Antonio, TX 78249
Phone (210) 575-9805

3011 W Loop 1604 N
San Antonio, TX 78251
Phone (726) 266-7081

Interoperability endpoints

  • FHIR API: https://api.platform.athenahealth.com/12515/brand/6/csg/1/fhir/r4

Organizations & group practices 12

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.

Hospital & facility affiliations 4

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": "1492560000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1699142400000",
    "number": "1174057889",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "4535 DRESSLER RD NW",
            "city": "CANTON",
            "state": "OH",
            "postal_code": "447182545"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1500 RED RIVER ST",
            "city": "AUSTIN",
            "state": "TX",
            "postal_code": "787011918",
            "telephone_number": "512-324-7010"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MARKUS",
        "first_name": "SHANNON",
        "middle_name": "ANJELICA",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2017-04-19",
        "last_updated": "2023-11-05",
        "certification_date": "2023-11-05",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "TX",
            "license": "T1456",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "first_name": "SHANNON",
            "last_name": "MARKUS",
            "middle_name": "ANJELICA",
            "prefix": "DR.",
            "credential": "M.D.",
            "code": "5",
            "type": "Other Name"
        }
    ]
}

Other providers in Austin, TX

Sources for this page

Verify at the official NPI Registry.