William John Mayer, QMHA
Social Worker · Portland, OR
William John Mayer, QMHA is a social worker with a practice address in Portland, Oregon, and NPI 1346388543, issued on Feb 1, 2007. 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 John Mayer
- Credential
- QMHA
- Primary taxonomy
- Social Worker 104100000X
- Practice location
- 14600 NW Cornell RD, Portland, OR 97229
- Phone
- (503) 645-9581
- Enumerated
- Feb 1, 2007
- Record last updated
- Nov 18, 2011 (not updated in 15 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest social worker records → All 2,101 in Oregon → Look up another NPI →
Also registered at 14600 NW Cornell RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Sara Abbott, LCSWClinical Social Worker1629600259
- Christopher Abell, BSW/MCHABOCase Manager/Care Coordinator1043821655
- Cassandra Adams-Cammack, LCSWCounselor1255787412
- Rachel AguirreMental Health Counselor1134533870
- Norma AlbaSocial Worker1891032223
- Alexis AlbertiCase Manager/Care Coordinator1417231366
Verify William John Mayer 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
William John Mayer among 2,101 social worker records in Oregon
William John Mayer, QMHA is one of 2,101 social worker records with a practice address in Oregon. 2% 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 2007, is newer than 2% of them.
- NPI issued2007 · 2% of these records are older, 86% newer
- In a Medicare fileNo · 2% of these records are
- In the CMS Doctors and Clinicians fileNo · 3% of these records are
- Record last updated2011 · 68% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 104100000X and a Oregon practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
964 social worker records list a practice address in Portland
They are 964 of the 42,088 NPPES records with a practice address in Portland, and 2,101 social worker records in Oregon. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 2,101 in Oregon → Every provider in Portland → Social Worker nationwide →
The 8 social worker records with the nearest ZIP codes
- Norma AlbaPortland, OR 972291891032223
- Laurie Dotten, MSWPortland, OR 972291689017030
- Holly FrieszPortland, OR 972291386014025
- Kelly HarrisonPortland, OR 972291548428006
- Daphne HuffmanPortland, OR 972291972871713
- Deborah Katz, PSS, MSW, LMSW, QMHPPortland, OR 972291497143101
- Michele Marquez, MSWPortland, OR 972291639365653
- Yaneira RomeroPortland, OR 972291205242013
Common questions
What is William John Mayer, QMHA's NPI number?
William John Mayer, QMHA's National Provider Identifier (NPI) is 1346388543, issued on Feb 1, 2007. An NPI identifies a provider in billing; it is not a license.
Where is William John Mayer, QMHA located?
The NPPES record lists a practice address at 14600 NW Cornell RD, Portland, OR, 97229. Phone: (503) 645-9581. Providers update this record themselves, so call before visiting.
How can I verify William John Mayer, QMHA'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.