Carolyn Marie Grachen, DO

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

License

DR.0075574 Issued in CO

Practice address

10101 Ridgegate Pkwy
Lone Tree, CO 80124-5522

Phone

(720) 225-1000

NPI assigned

Mar 20, 2023

Last updated

Jun 16, 2026By the provider in NPPES

Sex

Female

Sole proprietor

No

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

Specialties & licenses 1

Addresses

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

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.

Specialty

Internal Medicine

Education

Other, 2023

Medicare assignment

May accept Medicare assignment

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Osteopathy

Interoperability endpoints

• Direct secure messaging: carolyn.grachen.1@8078.direct.athenahealth.com
• Direct secure messaging: carolyn.grachen@hca3.eclinicaldirectplus.com

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

{
    "created_epoch": "1679270400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1781568000000",
    "number": "1659073294",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "113 SHAG BARK LN",
            "city": "VENETIA",
            "state": "PA",
            "postal_code": "153671157",
            "telephone_number": "724-825-3099"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "10101 RIDGEGATE PKWY",
            "city": "LONE TREE",
            "state": "CO",
            "postal_code": "801245522",
            "telephone_number": "720-225-1000"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "GRACHEN",
        "first_name": "CAROLYN",
        "middle_name": "MARIE",
        "name_prefix": "Dr.",
        "credential": "DO",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2023-03-20",
        "last_updated": "2026-06-16",
        "certification_date": "2026-06-16",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "CO",
            "license": "DR.0075574",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

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• Internal Medicine Physician in Lone Tree, CO
• Providers in Lone Tree, CO by specialty
• Internal Medicine Physician in Colorado

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jun 16, 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.