Benjamin Dale Knowlton, LCSW
Clinical Social Worker · Portland, OR
Benjamin Dale Knowlton, LCSW is a clinical social worker with a practice address in Portland, Oregon, and NPI 1255924023, issued on Feb 12, 2021. Check the license (Oregon L8538, as entered in NPPES) with the Oregon board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Benjamin Dale Knowlton
- Credential
- LCSW
- Primary taxonomy
- Clinical Social Worker 1041C0700X
- License number
- L8538 OR
Self-reported in NPPES; status is on the state search - Practice location
- 8510 N Curtis Ave, Portland, OR 97217
- Phone
- (630) 485-0790
- Enumerated
- Feb 12, 2021
- Record last updated
- Feb 12, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20230602002128); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest clinical social worker records → All 5,014 in Oregon → Look up another NPI →
Verify Benjamin Dale Knowlton in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Oregon board licenses this profession
Search for license L8538Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Sokyahealth Medical Group PCPortland, OR
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Benjamin Dale Knowlton among 5,014 clinical social worker records in Oregon
Benjamin Dale Knowlton, LCSW is one of 5,014 clinical social worker records with a practice address in Oregon. 12% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2021, is newer than 80% of them.
- NPI issued2021 · 80% of these records are older, 16% newer
- In a Medicare fileYes · 12% of these records are
- In the CMS Doctors and Clinicians fileYes · 21% of these records are
- Graduated2016 · median 2011 among the 1,044 with a school on file
- Record last updated2021 · 49% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1041C0700X and a Oregon practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
1,902 clinical social worker records list a practice address in Portland
They are 1,902 of the 42,088 NPPES records with a practice address in Portland, and 5,014 clinical social worker records in Oregon.
All 5,014 in Oregon → Every provider in Portland → Clinical Social Worker nationwide →
The 8 clinical social worker records with the nearest ZIP codes
- Joan Berry, LCSWPortland, OR 972171659484418
- Kris Clarke Wieland, LCSWPortland, OR 972171184934630
- Martha Corona-Goldstein, LCSWPortland, OR 972171073706743
- Amber Hatt, LCSWPortland, OR 972171093964314
- Christine Hines, LCSW, CADC IIPortland, OR 972171063559169
- Devora Holland, LCSWPortland, OR 972171982895413
- Kelsie Marea, LCSWPortland, OR 972171932213352
- Vana O'Brien, L.C.S.W.Portland, OR 972171538238084
Common questions
What is Benjamin Dale Knowlton, LCSW's NPI number?
Benjamin Dale Knowlton, LCSW's National Provider Identifier (NPI) is 1255924023, issued on Feb 12, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Benjamin Dale Knowlton, LCSW located?
The NPPES record lists a practice address at 8510 N Curtis Ave, Portland, OR, 97217. Phone: (630) 485-0790. Providers update this record themselves, so call before visiting.
How can I verify Benjamin Dale Knowlton, LCSW's license?
NPPES lists Oregon license number L8538, 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. Medicare files from data.cms.gov. 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.