NPIMap

Individual provider Active NPI

Mary Ellen Chang, DO

  • Emergency Medicine Physician
  • San Antonio, TX
National Provider Identifier
1649891987
Registry record updated Jul 8, 2022
On this page

Key facts

NPPES NPI Registry
Primary specialty
Emergency Medicine PhysicianTaxonomy code 207P00000X
License
T7889 Issued in TX
Practice address
7703 Floyd Curl Dr # 7736
San Antonio, TX 78229-3901
Phone
(210) 567-4621
NPI assigned
Apr 28, 2020
Last updated
Jul 8, 2022By the provider in NPPES
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jul 8, 2022

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Student in an Organized Health Care Education/Training Program 390200000X BP10070592 TX
Emergency Medicine Physician 207P00000X T7889 TX Primary

Addresses

Primary practice location

7703 Floyd Curl Dr # 7736
San Antonio, TX 78229-3901

Mailing address

21630 Milsa Dr Apt 2302
San Antonio, TX 78256-2502

Other names 1

  • Dr. Molly Chang Other name

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in TX, OK2 enrollments
Eligible to order & refer
  • Part B services
  • Medical equipment
  • Home health
  • Power mobility devices
  • Hospice
Green means eligible to order or refer.

Enrollment records 2

Enrollment IDStateProvider typePAC IDDetails
I20220718002476 TX Practitioner - Emergency Medicine 5698156974 Reassigns benefits to 4 organizations
I20251030004866 OK Practitioner - Emergency Medicine 5698156974 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Emergency Medicine
Education
Other, 2020
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
El Dorado Urgent Care, PLLCGroup PAC ID 0547528887, 28 clinicians
Ies ER Oklahoma LLCGroup PAC ID 5395234678, 135 clinicians

Practice addresses (Care Compare)

1327 S FM
Suite 741
Forney, TX 75126
Phone (844) 288-0359

6161 S Yale Ave
Tulsa, OK 74136-1902
Phone (918) 494-2200

Hospital & facility affiliations

Merit-based Incentive Payment System (MIPS)

Final score
99.43 of 100Reported as group
Quality
93.73
Promoting interoperability
100
Improvement activities
40

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
9328OKMDDental Assistant
T7889TXMDEmergency Medicine Physician
BP10070592TXMDStudent in an Organized Health Care Education/Training Program

Practice roles

OrganizationSpecialtyStatusNew patients
Ies ER Oklahoma LLC Emergency Medicine CurrentSince Oct 1, 2025 Accepting new patients
Scott & White Hospital - Taylor Emergency Medicine CurrentSince Jun 18, 2025 Accepting new patients
Scott & White Hospital - Taylor Current Accepting new patients
La Vernia Erl Acquisition Partners LLC PastSince Apr 1, 2025 Accepting new patients

Locations

10501 E 91st St
Tulsa, OK 74133
Phone (918) 307-6000

6161 S Yale Ave
Tulsa, OK 74136
Phone (918) 494-2200

305 Mallard Ln
Taylor, TX 76574
Phone (512) 352-7611

Organizations & group practices 8

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.

Hospital & facility affiliations 3

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": "1588032000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1657238400000",
    "number": "1649891987",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "21630 MILSA DR APT 2302",
            "city": "SAN ANTONIO",
            "state": "TX",
            "postal_code": "782562502"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "7703 FLOYD CURL DR # 7736",
            "city": "SAN ANTONIO",
            "state": "TX",
            "postal_code": "782293901",
            "telephone_number": "210-567-4621"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "CHANG",
        "first_name": "MARY ELLEN",
        "name_prefix": "Dr.",
        "credential": "DO",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2020-04-28",
        "last_updated": "2022-07-08",
        "certification_date": "2022-07-08",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "390200000X",
            "taxonomy_group": "",
            "desc": "Student in an Organized Health Care Education/Training Program",
            "state": "TX",
            "license": "BP10070592",
            "primary": false
        },
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "TX",
            "license": "T7889",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "first_name": "MOLLY",
            "last_name": "CHANG",
            "prefix": "DR.",
            "credential": "DO",
            "code": "5",
            "type": "Other Name"
        }
    ]
}

Other providers in San Antonio, TX

Sources for this page

Verify at the official NPI Registry.