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DR. TARA O'BRIEN MD
NPI 1871727560
Internal Medicine in Missoula, MT

Active since May 08, 2009PECOS EnrolledAccepts Medicare Assignment
85.43/100
CMS Quality Rating
500 W BROADWAY ST, MISSOULA, MT 59802(406) 543-7271(406) 327-1834 Get Directions Write a Review

NPPES record last updated: July 27, 2026. Verified against the NPPES registry weekly; last sync: November 08, 2026.

Record update history: Jul 27, 2026, Jan 19, 2021 (2 updates tracked since 2021).

About Dr. Tara O'brien Md NPPES

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

DR. TARA O'BRIEN MD (NPI 1871727560) is an individual internal medicine provider in Missoula, Montana, licensed in Montana (MED-PHYS-LIC-29502) and active in the NPI registry since May 2009. She is enrolled in Medicare PECOS, is affiliated with St. Patrick Hospital, and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1871727560
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameDR. TARA O'BRIENCredential: MD
Location Address500 W BROADWAY STMissoula, MT 59802-4008
Mailing AddressPo Box 12Liberty Lake, WA 99019-0012 · (406) 543-7271 · Fax (406) 327-1834
Phone(406) 543-7271
Fax(406) 327-1834
Sole ProprietorYes
Medical School CMSJc Edwards School Of Medicine, Marshall UniversityGraduated 2009
Enumeration DateMay 8, 2009
Last NPPES UpdateJuly 27, 20262 updates tracked since enumeration
NPPES CertifiedJuly 27, 2026
✔ NPI 1871727560 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in MT · MED-PHYS-LIC-29502
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Also ListedHospitalistTaxonomy 208M00000X · License 29502 (MT)
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X · License 157088 (NC)
500 W BROADWAY ST, Missoula, MT 59802
Open in Google Maps ↗

Secondary Practice Locations 2

Location 11101 26th St SGreat Falls, MT 59405-5104 · Phone (406) 455-5000
Location 2101 Manning Dr, Dept of MedicineChapel Hill, NC 27514-4220 · Phone (919) 966-1072 · Fax (919) 843-2356

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Montana.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

Dr. Tara O'brien Md 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 ID5890942403
PECOS Enrollment IDI20140307000149
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

2

Medicare enrollment records show Tara O'brien reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Providence Health & Services Mt
Same address
Internal Medicine
500 W BROADWAY ST FL 4
Missoula, MT 59802
  • Reassigned Medicare billing, Montana enrollment
  • 325 clinicians in this Medicare group
NPI 1427281203 (406) 327-1940
Benefis Hospitals Inc
135 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

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 6

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.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
271 services101 patients
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223
Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
39 services39 patients
Hospital discharge day management, more than 30 minutes 99239
Hospital discharge day management over 30 minutes involves a detailed process to ensure a smooth transition from hospital to home. It includes final examinations, discussion of your hospital stay, post-discharge instructions, and coordinating follow-up care.
27 services27 patients
Hospital discharge day management, 30 minutes or less 99238
Hospital discharge day management of 30 minutes or less includes finalizing your treatment, discussing your progress, and planning after-care at home. It ensures you're ready to leave the hospital and continue recovery safely.
26 services26 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
24 services17 patients
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222
Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.
23 services23 patients

Hospital Affiliations CMS Care Compare 3

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

St. Patrick Hospital

Acute Care Hospitals · Missoula, MT
5/5 CMS rating
OwnershipVoluntary non-profit - Church
CMS Certification Number270014
Location500 W BroadwayMissoula, MT 59806 · Missoula County
Emergency services Birthing friendly

St James Healthcare

Acute Care Hospitals · Butte, MT
1/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number270017
Location400 S Clark StButte, MT 59701 · Silver Bow County
Emergency services Birthing friendly

Bitterroot Health - Daly Hospital

Critical Access Hospitals · Hamilton, MT
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number271340
Location1200 Westwood DrHamilton, MT 59840 · Ravalli County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 59802 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
$130.52 typical visit price
range $56.81 – $172.26
Typical copayment $32.63 (range $14.20 – $43.06)
Most-billed visit code 99204
Established Patient
$100.16 typical visit price
range $18.24 – $140.32
Typical copayment $25.04 (range $4.56 – $35.08)
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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

85.43/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality85.98
Promoting Interoperability100
Improvement Activities40
Cost65.45

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

SIMONE MUSCO MD
Internal Medicine (Clinical Cardiac Electrophysiology)
500 W BROADWAY ST, STE 320
MISSOULA, MT 59802
Missoula County (406) 329-5615
PROVIDENCE HEALTH & SERVICES MT
General Acute Care Hospital
500 W BROADWAY ST
MISSOULA, MT 59802
Missoula County (406) 543-7271
JAMIE BELKOWSKI PHARMACIST
Pharmacist (Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist)
500 W BROADWAY ST
MISSOULA, MT 59802
Missoula County (406) 543-7271
DR. DESIREE NICOLE OWSLEY PHARMD
Pharmacist (Pharmacotherapy)
500 W BROADWAY ST
MISSOULA, MT 59802
Missoula County (406) 327-1650
JEANNIE H SWAIN PHARMD
Pharmacist (Pharmacotherapy)
500 W BROADWAY ST
MISSOULA, MT 59802
Missoula County (406) 329-5721
HEATHER HIGHTOWER NP
Nurse Practitioner (Family)
500 W BROADWAY ST
MISSOULA, MT 59802
Missoula County (406) 728-2539
MR. CURTIS G WICKRE MD
Internal Medicine (Nephrology)
500 W BROADWAY ST, 4TH FLOOR
MISSOULA, MT 59802
Missoula County (406) 327-1900
DR. TRAVIS OWEN ABICHT MD
Thoracic Surgery (Cardiothoracic Vascular Surgery)
500 W BROADWAY ST
MISSOULA, MT 59802
Missoula County (406) 329-5615

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 Tara O'brien's NPI number?

The NPI number for Tara O'brien is 1871727560. It was assigned to this individual provider in the NPPES registry on May 8, 2009.

Where is Tara O'brien located?

Tara O'brien practices at 500 W Broadway St, Missoula, MT 59802. The listed phone number is (406) 543-7271.

What is Tara O'brien's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Tara O'brien enrolled in Medicare?

Yes. Tara O'brien 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 Tara O'brien's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Tara O'brien reassigns Medicare benefits to 2 organizations: Providence Health & Services Mt (Missoula, MT) and Benefis Hospitals Inc (Great Falls, MT). 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 Tara O'brien's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Tara O'brien accept?

Health plans from Blue Cross and Blue Shield of Montana list Tara O'brien 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.

Is Tara O'brien affiliated with any hospitals?

According to CMS data, Tara O'brien is affiliated with St. Patrick Hospital, St James Healthcare and Bitterroot Health - Daly Hospital.

When was this NPI record last updated?

The NPPES record for Tara O'brien was last updated on July 27, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.