Patrick Joshua O'Brien, MD
Patrick Joshua O'Brien is a Vascular Surgery Physician provider (Surgery) practicing in Missoula, MT, registered in the NPPES registry with NPI 1942414040 since 2007. The credential MD stands for Doctor of Medicine.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1942414040 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Patrick Joshua O'Brien |
| Credential | MD |
| Sex | Male |
| Practice address | 500 W BROADWAY ST STE 320, Missoula, MT, 59802 |
| Phone | 4063295615 |
| Enumeration date | 2007-05-09 |
| Last updated in NPPES | 2021-06-21 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 2086S0129X | Vascular Surgery Physician | Primary | 29427 | MT |
MD — Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential
Copy-ready billing details
Provider: Patrick O'Brien, MD NPI: 1942414040 Taxonomy: 2086S0129X (Vascular Surgery Physician) Address: 500 W BROADWAY ST STE 320, Missoula, MT, 59802
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1831171586 | Melissa Robinson | Individual | Clinical Cardiac Electrophysiology Physician | Missoula, MT |
| 1619925575 | Jon Mcgregor | Individual | Cardiovascular Disease Physician | Missoula, MT |
| 1003865171 | George Bandow | Individual | Cardiovascular Disease Physician | Missoula, MT |
| 1184645236 | Joseph Schmoker | Individual | Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician | Missoula, MT |
| 1104021781 | Daniel Spoon | Individual | Interventional Cardiology Physician | Missoula, MT |
| 1851587356 | Anthony Caffarelli | Individual | Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician | Missoula, MT |
| 1487821344 | Gregory Wood | Individual | Cardiovascular Disease Physician | Missoula, MT |
| 1235391269 | Raymond Smith | Individual | Family Nurse Practitioner | Missoula, MT |
Verify this record
Cross-check NPI 1942414040 against the authoritative CMS record: view Patrick Joshua O'Brien on the official NPPES registry .
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes — even if the provider moves or changes specialty. Read the full guide or validate an NPI number.
Frequently asked questions
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Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2021-06-21.