Gregory Paul Calkins, M.D.

Primary specialty

Emergency Medicine PhysicianTaxonomy code 207P00000X

License

MD-6251 Issued in HI

Practice address

65-1117 Ehiku PL
Kamuela, HI 96743-7526

Phone

(513) 368-3602

NPI assigned

Nov 7, 2005

Last updated

Nov 14, 2025By 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

Medicare fee-for-service enrollment

Enrolled in IN, HI2 enrollments

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 2

Specialty

Emergency Medicine

Education

Other, 1978

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Duerler IncGroup PAC ID 2062680861, 8 clinicians

Practice addresses (Care Compare)

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.

• Duerler, Inc.

  dba Mango Medical

  • Family Medicine Physician
  • Kamuela, HI
  • NPI 1376837997
  Medicare reassignment Care Compare group NPD
• Trihealth Physicians of Indiana, Inc.

  dba Brookville Urgent Care

  • Internal Medicine Physician
  • Brookville, IN
  • NPI 1215321161
  NPD (past)

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

{
    "created_epoch": "1131321600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1763078400000",
    "number": "1043291206",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "65-1117 EHIKU PL",
            "city": "KAMUELA",
            "state": "HI",
            "postal_code": "967437526",
            "telephone_number": "513-368-3602"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "65-1117 EHIKU PL",
            "city": "KAMUELA",
            "state": "HI",
            "postal_code": "967437526",
            "telephone_number": "513-368-3602"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "64-1032 Mamalahoa Hwy Ste 306",
            "address_purpose": "LOCATION",
            "city": "Kamuela",
            "state": "HI",
            "postal_code": "967438441",
            "country_code": "US",
            "telephone_number": "808-769-5010 x45334",
            "fax_number": "808-829-3603",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "CALKINS",
        "first_name": "GREGORY",
        "middle_name": "PAUL",
        "name_prefix": "Dr.",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2005-11-07",
        "last_updated": "2025-11-14",
        "certification_date": "2025-11-14",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "CA",
            "license": "G200602",
            "primary": false
        },
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "IN",
            "license": "01031005A",
            "primary": false
        },
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "OH",
            "license": "35-043792",
            "primary": false
        },
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "HI",
            "license": "MD-6251",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Madelyn M. Bruno, MFT
• Kristin C Buehler, MD
• Carey Renee Bundrock, RN
• Maria Corazon Buno, MS RD
• Elizabeth Bush, APRN
• Janet Callaway
• Disa Gay B Camacaylan
• Alyce Camero, SLP
• Carol S. Blum, PHD
• Loren Case

• Emergency Medicine Physician in Kamuela, HI
• Providers in Kamuela, HI by specialty
• Emergency Medicine Physician in Hawaii

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Nov 14, 2025; 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.