Alyssa Marie Warren, MD
Psychiatry Physician · Hermiston, OR
Alyssa Marie Warren, MD is a psychiatry physician with a practice address in Hermiston, Oregon, and NPI 1811422231, issued on Apr 23, 2017. Check the license (Oregon MD224357, as entered in NPPES) on the Oregon Medical Board; the Medicare figures below come from public CMS files.
- Name
- Alyssa Marie Warren
- Credential
- MD
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License numbers
- MD224357 OR
A-193488 CA
042-0015794 VT
Self-reported in NPPES; status is on the state search - Practice location
- 600 NW 11TH St Ste E33, Hermiston, OR 97838
- Phone
- (541) 667-3740
- Enumerated
- Apr 23, 2017
- Record last updated
- Jun 11, 2026
- Fax
- (541) 667-8768
- Medicare enrollment
- Enrolled (PECOS I20250716003268); accepts Medicare assignment
- Medical or professional school
- Eastern Virginia Medical School, 2017
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 764 in Oregon → Look up another NPI →
Also registered at 600 NW 11TH St Ste E33
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Alyssa Marie Warren in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersOregon Medical Board
Search for license MD224357Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
96% fewer Medicare Part D claims than the average psychiatry physician in 2024
39 Medicare Part D claims for 15 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.
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
- Good Shepherd Health Care SystemHermiston, OR
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Alyssa Marie Warren among 764 psychiatry physician records in Oregon
Alyssa Marie Warren, 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 2017, is newer than 84% of them.
- NPI issued2017 · 84% of these records are older, 14% newer
- In a Medicare fileYes · 59% of these records are
- In the CMS Doctors and Clinicians fileYes · 39% of these records are
- Graduated2017 · 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 Hermiston → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Amy Boudreau, M.D., PH.D.Hermiston, OR 978381114154069
- Andrea Moore, MDHeppner, OR 978361346484144
- Oladele Oyedeji, RNHeppner, OR 978361831048255
- Tracy Epperson, MDLa Grande, OR 978501841498987
- William Mosiman, M.D.La Grande, OR 978501497771372
- Joel Rice, MDLa Grande, OR 978501477563203
- Charles Johnston, MDPendleton, OR 978011215046081
- Crispin Juguilon, M.D.Pendleton, OR 978011730377995
Common questions
What is Alyssa Marie Warren, MD's NPI number?
Alyssa Marie Warren, MD's National Provider Identifier (NPI) is 1811422231, issued on Apr 23, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Alyssa Marie Warren, MD located?
The NPPES record lists a practice address at 600 NW 11TH St Ste E33, Hermiston, OR, 97838. Phone: (541) 667-3740. Providers update this record themselves, so call before visiting.
How can I verify Alyssa Marie Warren, MD's license?
NPPES lists Oregon license number MD224357, 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 Alyssa Marie Warren, MD prescribe under Medicare Part D?
In 2024, Alyssa Marie Warren, MD had 39 Medicare Part D claims for 15 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.