Tara O'Brien, MD
NPI 1871727560 · Internal Medicine Physician · Missoula, MT
Enrolled with Medicare as Practitioner - Hospitalist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Tara O'Brien, MD is a Internal Medicine Physician provider in Missoula, MT (NPI 1871727560).
Provider details
- NPI number
- 1871727560
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- Yes
- License
- 157088 (NC)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
17 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
410 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 271 | $77 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 39 | $169 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 27 | $112 |
| Hospital Discharge Day Management, 30 Minutes Or Less99238 | 26 | $79 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 24 | $113 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 23 |
Practice location
Mailing address
Additional practice locations (1)
- 101 Manning DrDept of MedicineChapel Hill, NC 27514-4220Phone: (919) 966-1072Fax: (919) 843-2356
Registry dates
- Enumerated
- 2009-05-08
- Last updated
- 2021-01-19
- Certified
- 2021-01-19
Frequently asked questions
- What is Tara O'Brien's NPI number?
- Tara O'Brien's National Provider Identifier (NPI) is 1871727560, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Tara O'Brien's specialty?
- Tara O'Brien is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Tara O'Brien located?
- Tara O'Brien's practice location on file with NPPES is 500 W Broadway St, Missoula, MT 59802-4008.
- What is Tara O'Brien's phone number?
- The practice phone number listed in the NPPES registry for Tara O'Brien is (406) 543-7271.
- Does Tara O'Brien accept Medicare?
- Tara O'Brien is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Tara O'Brien's NPI active?
- Yes — Tara O'Brien's NPI (1871727560) is active in the NPPES registry as of the last update on 2021-01-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.