ELIZABETH ARENA ARENA DO, MPH
NPI 1881878759
Internal Medicine - Rheumatology in Grand Junction, CO

Q: What is Elizabeth Arena's NPI number?

The NPI number for Elizabeth Arena is 1881878759. It was assigned to this individual provider in the NPPES registry on December 27, 2007. The provider is also known as Elizabeth Anne Rook Do.

Q: What is Elizabeth Arena's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Rheumatology, with taxonomy code 207RR0500X.

Q: When was this NPI record last updated?

The NPPES record for Elizabeth Arena was last updated on December 16, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since December 27, 2007PECOS EnrolledAccepts Medicare Assignment

ST MARY'S REGIONAL MEDICAL CENTER 2635 N 7TH ST, 4TH FLOOR, GRAND JUNCTION, CO 81501(970) 298-5910(970) 298-7761 Get Directions Write a Review

NPPES record last updated: December 16, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Dec 16, 2025, Oct 6, 2025, Jul 7, 2022 and 3 more (6 updates tracked since 2019).

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About Elizabeth Arena Arena Do, Mph NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

ELIZABETH ARENA ARENA DO, MPH (NPI 1881878759) is an individual rheumatology provider in Grand Junction, Colorado, licensed in Montana (113913) and active in the NPI registry since December 2007. She is enrolled in Medicare PECOS and is a graduate of Nova Southeastern College Of Osteo Medicine (2006).

NPPES Registry Identity

NPI1881878759

Entity TypeIndividualFemale

Primary Taxonomy207RR0500X

Provider Legal NameELIZABETH ARENA ARENACredential: DO, MPH

Location AddressST MARY'S REGIONAL MEDICAL CENTER 2635 N 7TH ST, 4TH FLOORGrand Junction, CO 81501

Mailing Address1401 25th St SGreat Falls, MT 59405-5183 · (406) 731-8888 · Fax (406) 731-8318

Phone(970) 298-5910

Fax(970) 298-7761

Sole ProprietorNo

Medical School CMSNova Southeastern College Of Osteo MedicineGraduated 2006

Enumeration DateDecember 27, 2007

Last NPPES UpdateDecember 16, 20256 updates tracked since enumeration

NPPES CertifiedDecember 16, 2025

✔ NPI 1881878759 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · RheumatologyAllopathic & Osteopathic Physicians

Taxonomy Code207RR0500X

Licenses✔ Licensed in MT · 113913✔ Licensed in CO · DR.0061640

Definition

An internist who treats diseases of joints, muscle, bones and tendons. This specialist diagnoses and treats arthritis, back pain, muscle strains, common athletic injuries and collagen diseases.

ST MARY'S REGIONAL MEDICAL CENTER 2635 N 7TH ST, Grand Junction, CO 81501

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Other Names 1

Former Name (1)Elizabeth Anne Rook Do

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Select Health.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Elizabeth Arena Arena Do, Mph is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID9234309618

PECOS Enrollment IDI20190508002386

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

Medicare enrollment records show Elizabeth Arena reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Intermountain Medical Group Grand Junction, LLC

Same address

Nephrology

2635 N 7TH ST STE 20
Grand Junction, CO 81501

Reassigned Medicare billing, Colorado enrollment
438 clinicians in this Medicare group

NPI 1285248054 (970) 298-7106

Benefis Hospitals Inc

596 mi

Multi-Specialty

1401 25TH ST S
Great Falls, MT 59405

Reassigned Medicare billing, Montana enrollment
637 clinicians in this Medicare group

NPI 1780968974 (406) 455-5000

Confermed Of California PC

639 mi

Internal Medicine

101 ACADEMY STE 100
Irvine, CA 92617

Reassigned Medicare billing, California enrollment
118 clinicians in this Medicare group

NPI 1316584709 (860) 323-0172

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 4

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215

This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.

212 services99 patients

Prolonged office or other outpatient evaluation and management service(s) beyond the maximum required time of the primary procedure which has been selected using total time on the date of the primary service; each additional 15 minutes by the physician or G2212

This service refers to extended doctor visits where your healthcare provider spends additional time evaluating and managing your health beyond the primary procedure's required time. This includes each extra 15 minutes spent by the physician on the same day as the primary service.

73 services44 patients

New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205

This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.

47 services47 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

19 services17 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 81501 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$132.55 typical visit price

range $58.06 – $174.82

Typical copayment $33.13 (range $14.51 – $43.70)

Most-billed visit code 99204

Established Patient

$102.03 typical visit price

range $18.88 – $142.79

Typical copayment $25.50 (range $4.72 – $35.69)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Elizabeth Arena's NPI number?

The NPI number for Elizabeth Arena is 1881878759. It was assigned to this individual provider in the NPPES registry on December 27, 2007. The provider is also known as Elizabeth Anne Rook Do.

Where is Elizabeth Arena located?

Elizabeth Arena practices at St Mary's Regional Medical Center 2635 N 7th St 4th Floor, Grand Junction, CO 81501. The listed phone number is (970) 298-5910.

What is Elizabeth Arena's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Rheumatology, with taxonomy code 207RR0500X.

Is Elizabeth Arena enrolled in Medicare?

Yes. Elizabeth Arena is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Elizabeth Arena's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Elizabeth Arena reassigns Medicare benefits to 3 organizations: Intermountain Medical Group Grand Junction, LLC (Grand Junction, CO), Benefis Hospitals Inc (Great Falls, MT) and Confermed Of California PC (Irvine, CA). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Elizabeth Arena's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Elizabeth Arena accept?

Health plans from Select Health list Elizabeth Arena as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Elizabeth Arena was last updated on December 16, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.