Christopher Warren Hollen, MD
Neurology Physician · Portland, OR
Christopher Warren Hollen, MD is a neurology physician with a practice address in Portland, Oregon, and NPI 1205215191, issued on May 25, 2015. Check the license (Oregon MD192315, as entered in NPPES) on the Oregon Medical Board; the Medicare figures below come from public CMS files.
- Name
- Christopher Warren Hollen
- Credential
- MD
- Primary taxonomy
- Neurology Physician 2084N0400X
- License number
- MD192315 OR
Self-reported in NPPES; status is on the state search - Practice location
- 3181 SW Sam Jackson Park RD # L226, Portland, OR 97239
- Phone
- (405) 245-7916
- Enumerated
- May 25, 2015
- Record last updated
- Jun 26, 2019 (not updated in 7 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20190613002165); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest neurology physician records → All 287 in Oregon → Look up another NPI →
Also registered at 3181 SW Sam Jackson Park RD # L226
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Michelle Cameron, MDNeurology Physician1184883381
Verify Christopher Warren Hollen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersOregon Medical Board
Search for license MD192315Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
6% fewer Medicare Part D claims than the average neurology physician in 2024
1,285 Medicare Part D claims for 214 beneficiaries, against an average of 1,370 among the 15,005 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims.
Most prescribed
- Gabapentin77 claims
- Memantine Hcl67 claims
- Donepezil Hcl52 claims
- Baclofen51 claims
- Pregabalin48 claims
- Topiramate42 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The MIPS final score for 2023 (Medicare payment program): 97.8 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- University Professional ServicesPortland, OR
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Christopher Warren Hollen among 287 neurology physician records in Oregon
Christopher Warren Hollen, MD is one of 287 neurology physician records with a practice address in Oregon. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 80% of them.
- NPI issued2015 · 80% of these records are older, 17% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2015 · median 2007 among the 176 with a school on file
- Record last updated2019 · 64% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084N0400X and a Oregon practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Neurology Physician providers in Oregon
There are 287 neurology physician records in Oregon.
All 287 in Oregon → Every provider in Portland → Neurology Physician nationwide →
The 8 neurology physician records with the nearest ZIP codes
- Jacqueline Bernard, M.D.Portland, OR 972391710924709
- Eilis Boudreau, MDPortland, OR 972391093737629
- Nizar Chahin, M.D.Portland, OR 972391225015761
- Edward Cupler, MDPortland, OR 972391225043722
- Deniz Erten-Lyons, MDPortland, OR 972391770598286
- Daniel Gibbs, MD, PHDPortland, OR 972391720080427
- Amie Hiller, M.D.Portland, OR 972391649205600
- Helmi Lutsep, MDPortland, OR 972391164437661
Common questions
What is Christopher Warren Hollen, MD's NPI number?
Christopher Warren Hollen, MD's National Provider Identifier (NPI) is 1205215191, issued on May 25, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Christopher Warren Hollen, MD located?
The NPPES record lists a practice address at 3181 SW Sam Jackson Park RD # L226, Portland, OR, 97239. Phone: (405) 245-7916. Providers update this record themselves, so call before visiting.
How can I verify Christopher Warren Hollen, MD's license?
NPPES lists Oregon license number MD192315, as entered by the provider. Search the Oregon Medical Board at https://www.oregon.gov/OMB/Pages/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Christopher Warren Hollen, MD prescribe under Medicare Part D?
In 2024, Christopher Warren Hollen, MD had 1,285 Medicare Part D claims for 214 beneficiaries; the average among neurology physician prescribers was 1,370. Part D covers Medicare prescriptions only.
What is Christopher Warren Hollen, MD's MIPS final score?
The 2023 MIPS final score is 97.8 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.