Mark A Dennis, M.D.

Primary specialty

Diagnostic Radiology PhysicianTaxonomy code 2085R0202X

License

23198 Issued in CO

Practice address

10800 E Geddes Ave Ste 300
Englewood, CO 80112-3895

Phone

(303) 761-9190

Fax

(720) 874-4462

NPI assigned

Dec 22, 2005

Last updated

Sep 29, 2026By the provider in NPPES

Sex

Male

Sole proprietor

No

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

Specialties & licenses 4

Addresses

Other identifiers 19

Medicare fee-for-service enrollment

Enrolled in CO

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

Specialty

Diagnostic Radiology

Education

Other, 1979

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Medical Imaging of Colorado Radiology Imaging Assc PC Etal PTGroup PAC ID 5395644702, 122 clinicians

Practice addresses (Care Compare)

Merit-based Incentive Payment System (MIPS)

Final score

84.14 of 100Reported as group

Quality

83.98

Improvement activities

40

Cost

76.51

Merit-based Incentive Payment System (MIPS)

Final score

75 of 100Reported as individual

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Practice roles

Locations

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.

• Medical Imaging of Colorado Radiology Imaging Assc PC Etal PT

  • Diagnostic Radiology Physician
  • Englewood, CO
  • NPI 1336188234
  Medicare reassignment Care Compare group NPD
• Hawaii Radiologic Associates, LTD.

  • Diagnostic Radiology Physician
  • Hilo, HI
  • NPI 1174679443

  CO

  Medicare reassignment NPD
• Radiology Imaging Associates, PC

  • Diagnostic Radiology Physician
  • Englewood, CO
  • NPI 1679513196
  Medicare reassignment
• Radiology Imaging of Nebraska, LLC

  • Diagnostic Radiology Physician
  • Scottsbluff, NE
  • NPI 1184869901

  CO

  Medicare reassignment
• Dodge City Diagnostic, LLC

  • Specialist
  • Dodge City, KS
  • NPI 1689699613
  NPD
• Diagnostic Imaging Associates

  • Diagnostic Radiology Physician
  • Englewood, CO
  • NPI 1447299425
  NPD (past)

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

{
    "created_epoch": "1135209600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1790640000000",
    "number": "1649256561",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "10800 E GEDDES AVE STE 300",
            "city": "ENGLEWOOD",
            "state": "CO",
            "postal_code": "801123895",
            "telephone_number": "303-761-9190",
            "fax_number": "720-874-4462"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "10800 E GEDDES AVE STE 300",
            "city": "ENGLEWOOD",
            "state": "CO",
            "postal_code": "801123895",
            "telephone_number": "303-761-9190",
            "fax_number": "720-874-4462"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "DENNIS",
        "first_name": "MARK",
        "middle_name": "A",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2005-12-22",
        "last_updated": "2026-09-29",
        "certification_date": "2022-12-14",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2085R0202X",
            "taxonomy_group": "",
            "desc": "Radiology, Diagnostic Radiology",
            "state": "NE",
            "license": "25104",
            "primary": false
        },
        {
            "code": "2085R0202X",
            "taxonomy_group": "",
            "desc": "Radiology, Diagnostic Radiology",
            "state": "KS",
            "license": "04-36688",
            "primary": false
        },
        {
            "code": "2085R0202X",
            "taxonomy_group": "",
            "desc": "Radiology, Diagnostic Radiology",
            "state": "HI",
            "license": "MD17507",
            "primary": false
        },
        {
            "code": "2085R0202X",
            "taxonomy_group": "",
            "desc": "Radiology, Diagnostic Radiology",
            "state": "CO",
            "license": "23198",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
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            "state": "MO"
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            "state": "MT"
        },
        {
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            "state": "WY"
        },
        {
            "code": "05",
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            "issuer": null,
            "identifier": "200364600",
            "state": "IN"
        },
        {
            "code": "05",
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            "identifier": "200638130A",
            "state": "OK"
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            "code": "05",
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            "identifier": "42866602",
            "state": "AZ"
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            "code": "05",
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            "identifier": "84-059792913",
            "state": "NE"
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        {
            "code": "05",
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            "identifier": "104699390",
            "state": "MI"
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        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "208221601",
            "state": "TX"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "1649256561",
            "state": "CA"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "200425880A",
            "state": "KS"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "0224905",
            "state": "WA"
        },
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "200067205",
            "state": "MO"
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        {
            "code": "05",
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            "issuer": null,
            "identifier": "2301381",
            "state": "LA"
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        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "01231984",
            "state": "CO"
        },
        {
            "code": "05",
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            "issuer": null,
            "identifier": "10025709000",
            "state": "NE"
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        {
            "code": "05",
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            "issuer": null,
            "identifier": "64048556",
            "state": "KY"
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            "identifier": "23727055",
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    ],
    "endpoints": [],
    "other_names": []
}

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• Denetta Sue Slone MD PC
• Amanda Renee Denney, LPCC
• Klaire Denny, RBT
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• Diagnostic Radiology Physician in Englewood, CO
• Providers in Englewood, CO by specialty
• Diagnostic Radiology Physician in Colorado

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 29, 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.

Verify at the official NPI Registry.