NPIMap

Individual provider Active NPI

Andrea L. Darilek, MD

  • Hospitalist Physician
  • San Antonio, TX
National Provider Identifier
1053334904
Registry record updated Jan 27, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Hospitalist PhysicianTaxonomy code 208M00000X
License
W1570 Issued in TX
Practice address
4502 Medical Dr
San Antonio, TX 78229-4402
Phone
(210) 358-4000
NPI assigned
Jul 25, 2006
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jan 27, 2026

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

Specialties & licenses 3

Specialty (taxonomy)CodeLicenseStatePrimary
Internal Medicine Physician 207R00000X W1570 TX
Hospitalist Physician 208M00000X 10896 MT
Hospitalist Physician 208M00000X W1570 TX Primary

Addresses

Primary practice location

4502 Medical Dr
San Antonio, TX 78229-4402

Mailing address

591 Solms FRST
New Braunfels, TX 78132-3424

Other practice location 1

2800 10th Ave N
Billings, MT 59101-0703
Phone (406) 657-4000

Other identifiers 3

IdentifierTypeStateIssuer
0151419OtherMTMDCD PIN
000092886OtherMTBCSB PIN
122232500OtherWYMDCD PIN

Electronic endpoints 1

TypeEndpointUseAffiliation
Direct Messaging Address adarilek@billingsclinic.cernerdirect.com Direct

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in MT, TX2 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
I20060321000608 MT Practitioner - HospitalistPractitioner - Internal MedicinePractitioner - Pediatric Medicine 6709893464 Reassigns benefits to 1 organization
I20260205000311 TX Practitioner - HospitalistPractitioner - Internal Medicine 6709893464 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
HospitalistAlso: Pediatric Medicine
Education
University of Texas Medical School at Houston, 1997
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Billings ClinicGroup PAC ID 6002993516, 814 clinicians

Practice addresses (Care Compare)

2800 10TH Ave N
Suite D
Billings, MT 59101-0703
Phone (406) 238-2500

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

Hospital & facility affiliations

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
10896MTMDHospitalist Physician
W1570TXMDHospitalist Physician

Practice roles

OrganizationSpecialtyStatusNew patients
The University of Texas Health Science Center at San Antonio CurrentSince Mar 1, 2026 Accepting new patients
Billings Clinic Current Accepting new patients
Billings Clinic Internal Medicine CurrentSince Jan 2, 2006 Accepting new patients
University of Texas Health Science Center at San Antonio Internal Medicine CurrentSince Mar 1, 2026 Accepting new patients
Billings Clinic Current Accepting new patients
Frances Mahon Deaconess Hospital Past Accepting new patients

Locations

2800 10th Ave N
Ste D
Billings, MT 59101
Phone (406) 657-4100

2800 10th Ave N
Billings, MT 59101
Phone (406) 248-3290

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

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

Interoperability endpoints

  • Direct secure messaging: adarilek@billingsclinic.cernerdirect.com

Organizations & group practices 6

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 9

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": "1153785600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1769472000000",
    "number": "1053334904",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "591 SOLMS FRST",
            "city": "NEW BRAUNFELS",
            "state": "TX",
            "postal_code": "781323424"
        },
        {
            "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": [
        {
            "address_1": "2800 10th Ave N",
            "address_purpose": "LOCATION",
            "city": "Billings",
            "state": "MT",
            "postal_code": "591010703",
            "country_code": "US",
            "telephone_number": "406-657-4000",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "DARILEK",
        "first_name": "ANDREA",
        "middle_name": "L.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2006-07-25",
        "last_updated": "2026-01-27",
        "certification_date": "2026-01-27",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "TX",
            "license": "W1570",
            "primary": false
        },
        {
            "code": "208M00000X",
            "taxonomy_group": "",
            "desc": "Hospitalist",
            "state": "MT",
            "license": "10896",
            "primary": false
        },
        {
            "code": "208M00000X",
            "taxonomy_group": "",
            "desc": "Hospitalist",
            "state": "TX",
            "license": "W1570",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "MDCD PIN",
            "identifier": "0151419",
            "state": "MT"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "BCSB PIN",
            "identifier": "000092886",
            "state": "MT"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "MDCD PIN",
            "identifier": "122232500",
            "state": "WY"
        }
    ],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "adarilek@billingsclinic.cernerdirect.com",
            "affiliation": "N",
            "endpointDescription": "direct email address",
            "use": "DIRECT",
            "useDescription": "Direct",
            "address_1": "2800 10th Ave N",
            "city": "Billings",
            "state": "MT",
            "country_code": "US",
            "postal_code": "591010703",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

Other providers in San Antonio, TX

Sources for this page

Verify at the official NPI Registry.