Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Christopher Warren Hollen, MD

Individual provider Neurology Physician · NPI 1205215191

Christopher Warren Hollen, MD practises Neurology in Portland, Oregon. Qualified in 2015, 11 years ago. Practices with University Professional Services, a 1,704-clinician group, works from 2 locations, accepts Medicare assignment and offers telehealth. Licensed in Oregon.

Years since qualifying
11
Licensed in
OR
In the registry since
2015
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

3181 SW Sam Jackson Park Rd # L226
Portland, OR 97239-3098
Phone: (405) 245-7916
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 920 Stanton L Young Blvd, Oklahoma City, OK 73104-5036 — (405) 271-4113

Specialties & licences

Neurology Physician (primary) Taxonomy 2084N0400X · Licence MD192315 (OR)

Record details

NPI number1205215191
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 25, 2015
Last updated in NPPESJune 26, 2019

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyNEUROLOGY
Medical schoolOTHER
Graduated 2015 (11 years in practice)
Group practice University Professional Services — 1704 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients161
Services billed 342 a service is one billed item, such as a visit, a test or a procedure
Average patient age66

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

  • Adventist Health Portland Hospital · Portland, OR
  • Hillsboro Medical Center Hospital · Hillsboro, OR
  • Ohsu Hospital And Clinics Hospital · Portland, OR

Colleagues at University Professional Services

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 1704 clinicians in the practice; 12 are shown here.

Other providers in Portland