NPPES file of Aug 9, 2026

Deborah Lynn Mertlich, LCSW

Clinical Social Worker · Lake Oswego, OR

Deborah Lynn Mertlich, LCSW is a clinical social worker with a practice address in Lake Oswego, Oregon, and NPI 1366564338, issued on Apr 3, 2007. Check the license (Oregon L3405, as entered in NPPES) with the Oregon board that licenses this profession; 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
1366564338
Name
Deborah Lynn Mertlich
Credential
LCSW
Primary taxonomy
Clinical Social Worker 1041C0700X
License number
L3405 OR
Self-reported in NPPES; status is on the state search
Practice location
4550 Kruse Way, Lake Oswego, OR 97035
Phone
(971) 252-1545
Enumerated
Apr 3, 2007
Record last updated
May 20, 2011 (not updated in 15 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.
Download card Updates feed

Also registered at 4550 Kruse Way

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

  1. Maxine Burton, LCSWSocial Worker1861466765
  2. Lee Doppelt, PH.D.Psychologist1750315891
  3. Cheryn Grant, D.O.Psychiatry Physician1053335414
  4. Loveline Imanatue, DNPNurse Practitioner1467022004
  5. David Katz, PH.D.Psychologist1720051980
  6. Jean Linscott, PH DClinical Psychologist1710994785

Verify Deborah Lynn Mertlich in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Oregon board licenses this profession
    Search for license L3405
    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
Find 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.

Is this page about you? You can ask us to correct, restrict or remove it: how.

79 clinical social worker records list a practice address in Lake Oswego

They are 79 of the 1,377 NPPES records with a practice address in Lake Oswego, and 5,014 clinical social worker records in Oregon. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

Other clinical social worker records in Oregon

  1. Patricia Aanderud, MSW LCSWTigard, OR1992923445
  2. Shannon Aaron, CSWAPortland, OR1265005037
  3. Amanda Aatlo, MSWPortland, OR1538558432
  4. Carole Abajian, LCSWHappy Valley, OR1740235589
  5. Miya Abbott, LICENSED CLINICAL SOPortland, OR1053595785
  6. Sara Abbott, LCSWPortland, OR1629600259
  7. Fowzia Abdulle, MSWPortland, OR1902495401
  8. Agnes Abel, LCSWForest Grove, OR1114079696
  9. Dorothy Abelson, LCSWEugene, OR1912019787
  10. Wendy AbramPortland, OR1386254597

Common questions

What is Deborah Lynn Mertlich, LCSW's NPI number?

Deborah Lynn Mertlich, LCSW's National Provider Identifier (NPI) is 1366564338, issued on Apr 3, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Deborah Lynn Mertlich, LCSW located?

The NPPES record lists a practice address at 4550 Kruse Way, Lake Oswego, OR, 97035. Phone: (971) 252-1545. Providers update this record themselves, so call before visiting.

How can I verify Deborah Lynn Mertlich, LCSW's license?

NPPES lists Oregon license number L3405, as entered by the provider. 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.