Warren T. Keyser, MD
Psychiatry Physician · Woodburn, OR
Warren T. Keyser, MD is a psychiatry physician with a practice address in Woodburn, Oregon, and NPI 1720607088, issued on Apr 15, 2020. Check the license (Oregon MD219000, as entered in NPPES) on the Oregon Medical Board; the Medicare figures below come from public CMS files.
- Name
- Warren T. Keyser
- Credential
- MD
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- MD219000 OR
Self-reported in NPPES; status is on the state search - Practice location
- 1475 Mount Hood Ave Ste 160, Woodburn, OR 97071
- Phone
- (971) 983-5214
- Enumerated
- Apr 15, 2020
- Record last updated
- Apr 17, 2026
- Medicare enrollment
- Enrolled (PECOS I20250508001143); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 764 in Oregon → Look up another NPI →
Also registered at 1475 Mount Hood Ave Ste 160
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Colleen Fleming, PMHNPPsychiatric/Mental Health Nurse Practitioner1881027241
- Vilma Rangel, APRNNurse Practitioner1033684642
- Erin Wallace, M.D.Psychiatry Physician1730405598
Verify Warren T. Keyser in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersOregon Medical Board
Search for license MD219000Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
84% fewer Medicare Part D claims than the average psychiatry physician in 2024
160 Medicare Part D claims for 16 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Most prescribed
- Duloxetine Hcl23 claims
- Mirtazapine18 claims
- Trazodone Hcl14 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.
Bills Medicare through one group practice
- Western Psychological And Counseling Services LLCPortland, OR
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Warren T. Keyser among 764 psychiatry physician records in Oregon
Warren T. Keyser, MD is one of 764 psychiatry physician records with a practice address in Oregon. 59% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 91% of them.
- NPI issued2020 · 91% of these records are older, 7% newer
- In a Medicare fileYes · 59% of these records are
- In the CMS Doctors and Clinicians fileYes · 39% of these records are
- Graduated2020 · median 2009 among the 300 with a school on file
- Record last updated2026 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0800X and a Oregon practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Psychiatry Physician providers in Oregon
There are 764 psychiatry physician records in Oregon.
All 764 in Oregon → Every provider in Woodburn → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Erin Wallace, M.D.Woodburn, OR 970711730405598
- James Farley, MDWest Linn, OR 970681386782670
- Thomas Welch, MDAloha, OR 970781083626121
- Nauphyll Zuberi, MDAloha, OR 970781770656852
- Megan Brown, M.D.Tualatin, OR 970621972892495
- Susan Snow, MDTualatin, OR 970621831311893
- Edwin Romel De Leon, M.D.The Dalles, OR 970581871735464
- Denise Dion, MDThe Dalles, OR 970581952478083
Common questions
What is Warren T. Keyser, MD's NPI number?
Warren T. Keyser, MD's National Provider Identifier (NPI) is 1720607088, issued on Apr 15, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Warren T. Keyser, MD located?
The NPPES record lists a practice address at 1475 Mount Hood Ave Ste 160, Woodburn, OR, 97071. Phone: (971) 983-5214. Providers update this record themselves, so call before visiting.
How can I verify Warren T. Keyser, MD's license?
NPPES lists Oregon license number MD219000, 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 Warren T. Keyser, MD prescribe under Medicare Part D?
In 2024, Warren T. Keyser, MD had 160 Medicare Part D claims for 16 beneficiaries; the average among psychiatry physician prescribers was 1,000. 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.