William J. Byrne, M.D.
Specialist · Portland, OR
William J. Byrne, M.D. is a specialist with a practice address in Portland, Oregon, and NPI 1851496798, issued on Sep 14, 2006. Check the license with the Oregon board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- William J. Byrne
- Credential
- M.D.
- Primary taxonomy
- Specialist 174400000X
- License number
- G25209 CA
Self-reported in NPPES; status is on the state search - Practice location
- 707 SW Gaines St, Portland, OR 97239
- Phone
- (503) 494-1078
- Enumerated
- Sep 14, 2006
- Record last updated
- Dec 13, 2011 (not updated in 15 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
Also registered at 707 SW Gaines St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Elyse Adler, MSStudent in an Organized Health Care Education/Training Program1396583662
- Jessica Adsit, M.S.Genetic Counselor (M.S.)1124340633
- Sarah Allen, M.S. CF-SLPSpeech-Language Pathologist1386042604
- Daryl Anderson, PHDSpeech-Language Pathologist1417965930
- Laurie Armsby, MDPediatric Cardiology Physician1184613960
- Kristi Atkins, M.A, CCC-SLPSpeech-Language Pathologist1366702938
Verify William J. Byrne in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Oregon board licenses this professionCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Specialist providers in Oregon
There are 1,085 specialist records in Oregon. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
Other specialist records in Oregon
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- Daryl Adamson, MDPortland, OR1366445868
- Maria AddessiSalem, OR1124351010
- Alma AguirreKlamath Falls, OR1821474685
- Sheila Ahern, CPEPortland, OR1356709448
- Kyra Ahlstrom, LMTPortland, OR1649577073
- Lynn AkerBeaverton, OR1447700547
Common questions
What is William J. Byrne, M.D.'s NPI number?
William J. Byrne, M.D.'s National Provider Identifier (NPI) is 1851496798, issued on Sep 14, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William J. Byrne, M.D. located?
The NPPES record lists a practice address at 707 SW Gaines St, Portland, OR, 97239. Phone: (503) 494-1078. Providers update this record themselves, so call before visiting.
How can I verify William J. Byrne, M.D.'s license?
Search the Oregon board that licenses this profession; the NPPES record confirms identity 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. 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.