NPPES file of Aug 9, 2026

Neff Russell Breen, M.D.

Psychiatry Physician · Portland, OR

Neff Russell Breen, M.D. is a psychiatry physician with a practice address in Portland, Oregon, and NPI 1881795300, issued on Sep 26, 2006. Check the license (Oregon MD24938, as entered in NPPES) on the Oregon Medical Board; the federal record below is the public data PlainDoctor holds for this provider.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1881795300
Name
Neff Russell Breen
Credential
M.D.
Primary taxonomy
Psychiatry Physician 2084P0800X
License number
MD24938 OR
Self-reported in NPPES; status is on the state search
Practice location
3550 N Interstate Ave, Portland, OR 97227
Phone
(503) 331-5216
Enumerated
Sep 26, 2006
Record last updated
Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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8 nearest psychiatry physician records → All 764 in Oregon → Look up another NPI →

Also registered at 3550 N Interstate Ave

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Brianna Abbey, MA, LPC, CADC 1Professional Counselor1710133665
  2. Kaylene Adams, RPHPharmacist Clinician (PhC)/ Clinical Pharmacy Specialist1669922035
  3. John Alferes, M.D.Internal Medicine Physician1679680805
  4. James Allen, M.M.F.T.Addiction (Substance Use Disorder) Counselor1821192279
  5. Brad Anderson, M.D.Addiction Medicine (Family Medicine) Physician1245323724
  6. Brenda Annotti, F.N.P.Gerontology Registered Nurse1255335295

Verify Neff Russell Breen in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersOregon Medical Board
    Search for license MD24938    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Oregon license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Neff Russell Breen among 764 psychiatry physician records in Oregon

Neff Russell Breen, M.D. 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 not. Its NPI, issued in 2006, is newer than 6% of them.

  • NPI issued2006 · 6% of these records are older, 57% newer
  • In a Medicare fileNo · 59% of these records are
  • In the CMS Doctors and Clinicians fileNo · 39% of these records are
  • Record last updated2007 · 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. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 764 in Oregon → Every provider in Portland → Psychiatry Physician nationwide →

The 8 psychiatry physician records with the nearest ZIP codes

  1. Sean Bennett, D.OPortland, OR 972271740644913
  2. Kathryn Evers, MDPortland, OR 972271407273576
  3. Rafael Gray, MDPortland, OR 972271992810352
  4. Sanyup Lee, MDPortland, OR 972271942532957
  5. Zoe MossPortland, OR 972271205377181
  6. Douglas Robb, M.D.Portland, OR 972271194829978
  7. David Ruud, M.D.Portland, OR 972271760594063
  8. John Wilson, M.D., PH.D.Portland, OR 972271619292240

Common questions

What is Neff Russell Breen, M.D.'s NPI number?

Neff Russell Breen, M.D.'s National Provider Identifier (NPI) is 1881795300, issued on Sep 26, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Neff Russell Breen, M.D. located?

The NPPES record lists a practice address at 3550 N Interstate Ave, Portland, OR, 97227. Phone: (503) 331-5216. Providers update this record themselves, so call before visiting.

How can I verify Neff Russell Breen, M.D.'s license?

NPPES lists Oregon license number MD24938, 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.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.