NPIMap

Individual provider Active NPI

Elizabeth Arena Arena, DO, MPH

  • Rheumatology Physician
  • Grand Junction, CO
National Provider Identifier
1881878759
Registry record updated Dec 16, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Rheumatology PhysicianTaxonomy code 207RR0500X
License
113913 Issued in MT
Practice address
St Mary's Regional Medical Center 2635 N 7TH St
4TH Floor
Grand Junction, CO 81501
Phone
(970) 298-5910
Fax
(970) 298-7761
NPI assigned
Dec 27, 2007
Last updated
Dec 16, 2025By the provider in NPPES
Sex
Female
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Dec 16, 2025

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Rheumatology Physician 207RR0500X DR.0061640 CO
Rheumatology Physician 207RR0500X 113913 MT Primary

Addresses

Primary practice location

St Mary's Regional Medical Center 2635 N 7TH St
4TH Floor
Grand Junction, CO 81501

Mailing address

1401 25TH St S
Great Falls, MT 59405-5183
Phone (406) 731-8888

Other names 1

  • Elizabeth Anne Rook Former name

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in CA, CO, MT3 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 3

Enrollment IDStateProvider typePAC IDDetails
I20110822000178 CA Practitioner - RheumatologyPractitioner - Internal Medicine 9234309618 Reassigns benefits to 1 organization
I20190508002386 CO Practitioner - Internal MedicinePractitioner - Rheumatology 9234309618 Reassigns benefits to 1 organization
I20220719002760 MT Practitioner - Rheumatology 9234309618 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Internal MedicineAlso: Rheumatology
Education
Nova Southeastern College of Osteo Medicine, 2006
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices

Practice addresses (Care Compare)

1050 Wellington Ave
Imh Wellington Lung and Sleep Clinic
Grand Junction, CO 81501-8121
Phone (970) 298-5864

2635 N 7TH St
Grand Junction, CO 81501-8209

Hospital & facility affiliations

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
113913MTMDRheumatology Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Confermed of California PC Internal Medicine CurrentSince May 1, 2024 Accepting new patients
Intermountain Medical Group Grand Junction, LLC Internal Medicine Current Accepting new patients
Intermountain Medical Group Grand Junction, LLC CurrentSince Oct 3, 2022 Accepting new patients
Benefis Hospitals Inc CurrentSince Jul 7, 2022 Accepting new patients
Intermountain Medical Group Grand Junction, LLC CurrentSince Oct 3, 2022 Accepting new patients
Benefis Hospitals, Inc. CurrentSince Jul 7, 2022 Accepting new patients
St Mary's Hospital and Medical Center, Inc Internal Medicine Past Accepting new patients
Confermed PC Internal Medicine Past Accepting new patients
St Mary's Hospital and Medical Center, Inc Past Accepting new patients

Locations

101 Academy
Ste 100
Irvine, CA 92617
Phone (860) 323-0172

4600 Campus Dr
Ste 203
Newport Beach, CA 92660
Phone (617) 259-5933

1050 Wellington Ave
Grand Junction, CO 81501
Phone (970) 245-4810

1050 Wellington Ave
Slp Ctr
Grand Junction, CO 81501
Phone (970) 298-5864

2635 N 7th St
Grand Junction, CO 81501
Phone (970) 244-2009

2635 N 7th St
Fl 4
Grand Junction, CO 81501
Phone (970) 244-2457

11 Silver St
Unit 856
Middletown, CT 06457

1101 26th St S
Great Falls, MT 59405
Phone (406) 455-4690

1101 26th St S
Fl 5
Great Falls, MT 59405
Phone (406) 455-2132

1401 25th St S
Great Falls, MT 59405
Phone (406) 455-3650

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, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

Hospital & facility affiliations 12

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": "1198713600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1765843200000",
    "number": "1881878759",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1401 25TH ST S",
            "city": "GREAT FALLS",
            "state": "MT",
            "postal_code": "594055183",
            "telephone_number": "406-731-8888",
            "fax_number": "406-731-8318"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "ST MARY'S REGIONAL MEDICAL CENTER 2635 N 7TH ST",
            "address_2": "4TH FLOOR",
            "city": "GRAND JUNCTION",
            "state": "CO",
            "postal_code": "81501",
            "telephone_number": "970-298-5910",
            "fax_number": "970-298-7761"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "ARENA",
        "first_name": "ELIZABETH",
        "middle_name": "ARENA",
        "credential": "DO, MPH",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2007-12-27",
        "last_updated": "2025-12-16",
        "certification_date": "2025-12-16",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RR0500X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Rheumatology",
            "state": "CO",
            "license": "DR.0061640",
            "primary": false
        },
        {
            "code": "207RR0500X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Rheumatology",
            "state": "MT",
            "license": "113913",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "first_name": "ELIZABETH",
            "last_name": "ROOK",
            "middle_name": "ANNE",
            "credential": "DO",
            "code": "1",
            "type": "Former Name"
        }
    ]
}

Other providers in Grand Junction, CO

Sources for this page

Verify at the official NPI Registry.