NPIMap

Individual provider Active NPI

Natalie Leila Sivak, M.D.

  • Diagnostic Radiology Physician
  • Denver, CO
National Provider Identifier
1891943023
Registry record updated Mar 16, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Diagnostic Radiology PhysicianTaxonomy code 2085R0202X
License
DR.0067493 Issued in CO
Practice address
2045 N Franklin St
Denver, CO 80205-5437
Phone
(303) 338-4545
NPI assigned
Aug 29, 2008
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Mar 16, 2026

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

Specialties & licenses 3

Specialty (taxonomy)CodeLicenseStatePrimary
Diagnostic Radiology Physician 2085R0202X 2008-01479 NC
Diagnostic Radiology Physician 2085R0202X DR.0067493 CO Primary
Diagnostic Radiology Physician 2085R0202X N1150 TX

Addresses

Primary practice location

2045 N Franklin St
Denver, CO 80205-5437

Mailing address

10350 E Dakota Ave
Denver, CO 80247-1314

Other practice location 1

12605 E 16th Ave
Aurora, CO 80045-2545
Phone (720) 848-0000

Other identifiers 1

IdentifierTypeStateIssuer
9000199883MedicaidCO

Other names 1

  • Natalie L Mange Former name

Electronic endpoints 1

TypeEndpointUseAffiliation
SOAP URL https://careepiceast.kp.org:14430/Interconnect-prodcom/wcf/epic.community.hie/xcpdrespondinggatewaysync.svc/ceq Health Information Exchange (HIE)

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in TX, CO2 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
I20101008001132 TX Practitioner - Diagnostic Radiology 8527118496 Reassigns benefits to 1 organization
I20220105000975 CO Practitioner - Diagnostic RadiologyPractitioner - Nuclear MedicinePractitioner - Interventional Radiology 8527118496 Reassigns benefits to 3 organizations

Care Compare profile

Medicare Care Compare
Specialty
Diagnostic RadiologyAlso: Interventional Radiology, Nuclear Medicine
Education
University of Oklahoma College of Medicine, 2004
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
University Physicians IncorporatedGroup PAC ID 3476465667, 3,189 clinicians
Colorado Permanente Medical Group PCGroup PAC ID 1254238454, 1,325 clinicians

Practice addresses (Care Compare)

12605 E 16TH Ave
Uchealth Anschutz Medical Campus
Aurora, CO 80045-2545
Phone (720) 848-0000

2045 N Franklin St
Kaiser Permanente Franklin Medical
Denver, CO 80205-5437
Phone (303) 338-4545

Hospital & facility affiliations

  • University of Colorado Hospital Authority Hospital, Aurora, CO, CCN 060024
  • Uchealth Highlands Ranch Hospital Hospital, Highlands Ranch, CO, CCN 060132

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
DR.0067493COMDDiagnostic Radiology Physician
2008-01479NCMDDiagnostic Radiology Physician

Practice roles

OrganizationSpecialtyStatusNew patients
University Physicians, Incorporated CurrentSince Jan 1, 2022 Accepting new patients
University Physicians Incorporated Family Medicine Current Accepting new patients
Uchealth Imaging Services, LLC Diagnostic Radiology CurrentSince Jan 10, 2022 Accepting new patients
University Physicians, Incorporated CurrentSince Jan 1, 2022 Accepting new patients
Scott & White Clinic Family Medicine CurrentSince Jul 19, 2010 Accepting new patients
Uchealth Imaging Services, LLC Diagnostic Radiology CurrentSince Jan 10, 2022 Accepting new patients
Scott & White Clinic Family Medicine CurrentSince Jul 19, 2010 Accepting new patients
University of North Carolina at Chapel Hill Family Medicine Past Accepting new patients

Locations

13123 E 16th Ave
Aurora, CO 80045
Phone (720) 777-3846

12605 E 16th Ave
Aurora, CO 80045
Phone (720) 848-0006

875 W 136th Ave
Ste 100
Broomfield, CO 80023
Phone (303) 457-7700

2045 N Franklin St
Denver, CO 80205
Phone (303) 764-4666

Dept 1061
Denver, CO 80256

100 Cook St
Ste 100
Denver, CO 80206
Phone (720) 516-9420

175 Inverness Dr W
Ste 150
Englewood, CO 80112
Phone (720) 516-9800

1500 Park Central Dr
Ste 401
Highlands Ranch, CO 80129
Phone (720) 516-4085

101 Lafferty Ave
Cameron, TX 76520
Phone (254) 605-1100

2401 S 31st St
Temple, TX 76508
Phone (254) 724-2459

Organizations & group practices 9

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 28

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

View all 28

NPI Registry JSON

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

{
    "created_epoch": "1219968000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1773619200000",
    "number": "1891943023",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "10350 E DAKOTA AVE",
            "city": "DENVER",
            "state": "CO",
            "postal_code": "802471314"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "2045 N FRANKLIN ST",
            "city": "DENVER",
            "state": "CO",
            "postal_code": "802055437",
            "telephone_number": "303-338-4545"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "12605 E 16th Ave",
            "address_purpose": "LOCATION",
            "city": "Aurora",
            "state": "CO",
            "postal_code": "800452545",
            "country_code": "US",
            "telephone_number": "720-848-0000",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "SIVAK",
        "first_name": "NATALIE",
        "middle_name": "LEILA",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2008-08-29",
        "last_updated": "2026-03-16",
        "certification_date": "2026-03-16",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2085R0202X",
            "taxonomy_group": "",
            "desc": "Radiology, Diagnostic Radiology",
            "state": "NC",
            "license": "2008-01479",
            "primary": false
        },
        {
            "code": "2085R0202X",
            "taxonomy_group": "",
            "desc": "Radiology, Diagnostic Radiology",
            "state": "CO",
            "license": "DR.0067493",
            "primary": true
        },
        {
            "code": "2085R0202X",
            "taxonomy_group": "",
            "desc": "Radiology, Diagnostic Radiology",
            "state": "TX",
            "license": "N1150",
            "primary": false
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "9000199883",
            "state": "CO"
        }
    ],
    "endpoints": [
        {
            "endpointType": "SOAP",
            "endpointTypeDescription": "SOAP URL",
            "endpoint": "https://careepiceast.kp.org:14430/Interconnect-prodcom/wcf/epic.community.hie/xcpdrespondinggatewaysync.svc/ceq",
            "affiliation": "N",
            "endpointDescription": "Carequality",
            "use": "HIE",
            "useDescription": "Health Information Exchange (HIE)",
            "contentType": "OTHER",
            "contentTypeDescription": "Other",
            "contentOtherDescription": "C-CDA",
            "address_1": "2045 N Franklin St",
            "city": "Denver",
            "state": "CO",
            "country_code": "US",
            "postal_code": "802055437",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": [
        {
            "first_name": "NATALIE",
            "last_name": "MANGE",
            "middle_name": "L",
            "code": "1",
            "type": "Former Name"
        }
    ]
}

Other providers in Denver, CO

Sources for this page

Verify at the official NPI Registry.