Dr. David Patrick O'Brien IV, MD

Dr. O'Brien practices at Plaza Ambulatory Surgery Center - Portland in Portland, Oregon.

Dr. O'Brien's NPI, 1669440350, was assigned on March 9, 2006. Dr. O'Brien graduated from Emory School of Medicine in 1997. Dr. O'Brien's Oregon license number on file is MD28214.

Dr. O'Brien's primary practice is Plaza Ambulatory Surgery Center - Portland, at 5050 NE Hoyt Street, Suite 156, Portland, OR 97213. The practice phone is (971) 229-8100.

Dr. O'Brien's primary practice is Plaza Ambulatory Surgery Center - Portland in Portland, Oregon. Dr. O'Brien is also affiliated with Providence Portland Medical Center. The medical group on file is The Oregon Clinic.

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. O'Brien practices, 2 sites in all. Vendor and product names are available with a free account.

Colon and rectal surgery is Dr. O'Brien's primary specialty in the NPI Registry, under taxonomy code 208C00000X. Dr. O'Brien is board certified in colon & rectal surgery by the American Board of Colon and Rectal Surgery. Dmand AI has Dr. O'Brien's licenses on file in 2 states: Oregon and Ohio.

Dmand AI lists colonoscopy, colon removal and hemorrhoids among the conditions Dr. O'Brien treats.

CMS data shows 137 Medicare services from Dr. O'Brien across 6 procedure codes in 2024, for 91 Medicare patients. Medicare paid $15,262 for them. Every service was in an office.

CMS counts 91 Medicare patients who saw Dr. O'Brien in 2024. The largest group is 65 to 74, with 40 patients. 66% of them have high blood pressure, and 65% have high cholesterol. 13% are also on Medicaid. Their average risk score is 1.55, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts Dr. O'Brien's median patient age at 54, with 46% women.

In 2024, Dr. O'Brien wrote 54 Medicare Part D claims for 34 patients. 87% of them were for generic drugs. CMS names the drug for 16 of them, across 1 drug with 11 or more claims each, at $73 in total drug cost. In 2023, CMS named 49 claims across 3 drugs.

Dr. O'Brien accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 68 procedures of colonoscopy by Dr. O'Brien, more than 70% of the clinicians it reports for that procedure.

Removal of tissue: 1 to 10 procedures (CMS shows small counts as a range)

Dmand AI links 3 papers to Dr. O'Brien, published from 2019 to 2022. Dr. O'Brien's most frequent co-authors are Rehan Saeed Ahmad, MD, Marka Rae Crittenden, MD, PhD and Amanda Verienna Hayman, MD, MPH.

CMS Open Payments shows 7 general payments to Dr. O'Brien from 6 drug and device companies from 2017 to 2025. Food and beverage make up the largest share, 100% of the total. Integra LifeSciences Corporation paid the most, $174.

Dmand AI lists 1 award for Dr. O'Brien, most recently CMS Stage 1 2012 in 2011.

Dr. O'Brien graduated from Emory School of Medicine in 1997.

Dr. O'Brien is in network with 10 carriers, including Elevance, Aetna and United Healthcare. Medicare plans come from the most carriers, 9. Check the plan with the practice before a visit.