Justin O. Cook, MD
Emergency Medicine Physician · Portland, OR
Justin O. Cook, MD is an emergency medicine physician with a practice address in Portland, Oregon, and NPI 1952321002, issued on Jul 20, 2006. Check the license (Oregon MD25848, as entered in NPPES) on the Oregon Medical Board; the Medicare figures below come from public CMS files.
- Name
- Justin O. Cook
- Credential
- MD
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License numbers
- MD25848 OR
A82700 CA
M00044892 WA
Self-reported in NPPES; status is on the state search - Practice location
- 2801 N Gantenbein Ave, Portland, OR 97227
- Phone
- (503) 413-4870
- Enumerated
- Jul 20, 2006
- Record last updated
- Jun 10, 2013 (not updated in 13 years: call before relying on the address or phone)
- Medicaid IDs
- 8433120 WA
213596 OR - Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 1,079 in Oregon → Look up another NPI →
Also registered at 2801 N Gantenbein Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Justin O. Cook in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersOregon Medical Board
Search for license MD25848Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
31% fewer Medicare Part D claims than the average emergency medicine physician in 2024
156 Medicare Part D claims for 98 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D.
Most prescribed
- Doxycycline Hyclate16 claims
- Ibuprofen11 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.
Justin O. Cook among 1,079 emergency medicine physician records in Oregon
Justin O. Cook, MD is one of 1,079 emergency medicine physician records with a practice address in Oregon. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 3% of them.
- NPI issued2006 · 3% of these records are older, 59% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileNo · 52% of these records are
- Record last updated2013 · 57% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a Oregon practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Emergency Medicine Physician providers in Oregon
There are 1,079 emergency medicine physician records in Oregon.
All 1,079 in Oregon → Every provider in Portland → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Richard Berkey, MD19052Portland, OR 972271053338764
- John Campbell, MDPortland, OR 972271225059777
- Christine Dean, DOPortland, OR 972271831110386
- Arman Faroghi, MDPortland, OR 972271871514505
- Aloysius Fobi, MDPortland, OR 972271255350328
- Darren Gillette, MDPortland, OR 972271326068891
- Ian McKenna, MDPortland, OR 972271912927484
- Anna Nelson, MD, PHDPortland, OR 972271477829216
Common questions
What is Justin O. Cook, MD's NPI number?
Justin O. Cook, MD's National Provider Identifier (NPI) is 1952321002, issued on Jul 20, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Justin O. Cook, MD located?
The NPPES record lists a practice address at 2801 N Gantenbein Ave, Portland, OR, 97227. Phone: (503) 413-4870. Providers update this record themselves, so call before visiting.
How can I verify Justin O. Cook, MD's license?
NPPES lists Oregon license number MD25848, 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 Justin O. Cook, MD prescribe under Medicare Part D?
In 2024, Justin O. Cook, MD had 156 Medicare Part D claims for 98 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
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.