Dr. Christopher Warren Hollen, MD

Dr. Hollen practices at OHSU Hospital in Portland, Oregon, part of State of Oregon.

Dr. Hollen's NPI, 1205215191, was assigned on May 25, 2015. Dr. Hollen holds Oregon license MD192315.

Dr. Hollen's primary practice is OHSU Hospital, at 3181 SW Sam Jackson Park Road, Portland, OR 97239 in Multnomah County. The practice phone is (503) 494-9000.

Dr. Hollen's primary practice is OHSU Hospital in Portland, Oregon, part of State of Oregon. Dr. Hollen is also affiliated with Adventist Health Portland. The medical group on file is Oregon Health & Science University (OHSU). Dmand AI also links Dr. Hollen to 1 more hospital and 1 clinical lab, each named with a free account.

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Hollen practices, 4 sites in all. Vendor and product names are available with a free account.

Neurology is Dr. Hollen's primary specialty in the NPI Registry, under taxonomy code 2084N0400X. Dr. Hollen is licensed in Oregon.

CMS data shows 259 Medicare services from Dr. Hollen across 4 procedure codes in 2024, for 161 Medicare patients. Medicare paid $15,888 for them. Every service was in an office.

CMS counts 161 Medicare patients who saw Dr. Hollen in 2024. The largest group is under 65, with 59 patients. 54% of them have high blood pressure, and 50% have high cholesterol. 28% 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. Hollen's median patient age at 64, with 65% women.

In 2024, Dr. Hollen wrote 1,285 Medicare Part D claims for 214 patients. 86% of them were for generic drugs. CMS names the drug for 986 of them, across 37 drugs with 11 or more claims each, at $276,354 in total drug cost. In 2023, CMS named 629 claims across 26 drugs.

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 99 out of 100 for Dr. Hollen for performance year 2024, reported through an alternative payment model (APM). Dr. Hollen accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Hollen as offering telehealth.

Dmand AI links 5 papers to Dr. Hollen, published from 2014 to 2023. Dr. Hollen's most frequent co-authors are Lindsey Wooliscroft, MD, Aaron Farrow, MD and Andrea Sneider Hakimi, DO.

CMS Open Payments shows 48 general payments to Dr. Hollen from 12 drug and device companies from 2016 to 2019. Consulting fees make up the largest share, 44% of the total. Biogen, Inc. paid the most, $1,014.