Mark Edward Holderbach, M.S.W., L.C.S.W.
Clinical Social Worker · Gresham, OR
Mark Edward Holderbach, M.S.W., L.C.S.W. is a clinical social worker with a practice address in Gresham, Oregon, and NPI 1649397183, issued on Mar 22, 2007. Check the license (Oregon L3497, 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.
- Name
- Mark Edward Holderbach
- Credential
- M.S.W., L.C.S.W.
- Primary taxonomy
- Clinical Social Worker 1041C0700X
- License number
- L3497 OR
Self-reported in NPPES; status is on the state search - Practice location
- 4101 NE Division St, Gresham, OR 97030
- Phone
- (503) 666-6575
- Enumerated
- Mar 22, 2007
- Record last updated
- Jul 9, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (503) 666-4047
- Medicaid ID
- 1041C0700X CLINICAL OR
- Entity
- Type 1 · individual
Also registered at 4101 NE Division St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Tyler AshbySpecialist1083412100
- Sharon AumaniRegistered Nurse1194119636
- Chase BachmanCase Manager/Care Coordinator1972936144
- Matthew Bailey, MSW, LSW, CPRPMental Health Counselor1679056204
- Sarah BaileyCase Manager/Care Coordinator1740653997
- Alexander BautistaRegistered Nurse1346073863
Verify Mark Edward Holderbach in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Oregon board licenses this profession
Search for license L3497Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
73 clinical social worker records list a practice address in Gresham
They are 73 of the 1,934 NPPES records with a practice address in Gresham, and 5,014 clinical social worker records in Oregon. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 73 in Gresham → All 5,014 in Oregon → Every provider in Gresham →
Other clinical social worker records in Oregon
- Patricia Aanderud, MSW LCSWTigard, OR1992923445
- Shannon Aaron, CSWAPortland, OR1265005037
- Amanda Aatlo, MSWPortland, OR1538558432
- Carole Abajian, LCSWHappy Valley, OR1740235589
- Miya Abbott, LICENSED CLINICAL SOPortland, OR1053595785
- Sara Abbott, LCSWPortland, OR1629600259
- Fowzia Abdulle, MSWPortland, OR1902495401
- Agnes Abel, LCSWForest Grove, OR1114079696
- Dorothy Abelson, LCSWEugene, OR1912019787
- Wendy AbramPortland, OR1386254597
Common questions
What is Mark Edward Holderbach, M.S.W., L.C.S.W.'s NPI number?
Mark Edward Holderbach, M.S.W., L.C.S.W.'s National Provider Identifier (NPI) is 1649397183, issued on Mar 22, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Mark Edward Holderbach, M.S.W., L.C.S.W. located?
The NPPES record lists a practice address at 4101 NE Division St, Gresham, OR, 97030. Phone: (503) 666-6575. Providers update this record themselves, so call before visiting.
How can I verify Mark Edward Holderbach, M.S.W., L.C.S.W.'s license?
NPPES lists Oregon license number L3497, 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.