Cortney Del Duffy, PH.D.
Clinical Psychologist · Duluth, MN
Cortney Del Duffy, PH.D. is a clinical psychologist with a practice address in Duluth, Minnesota, and NPI 1740763085, issued on Sep 12, 2018. Check the license (Minnesota LP6283, as entered in NPPES) with the Minnesota board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Cortney Del Duffy
- Credential
- PH.D.
- Primary taxonomy
- Clinical Psychologist 103TC0700X
- License number
- LP6283 MN
Self-reported in NPPES; status is on the state search - Practice location
- 306 W Superior St Ste 405, Duluth, MN 55802
- Phone
- (218) 203-9335
- Enumerated
- Sep 12, 2018
- Record last updated
- Jul 15, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20181127000549); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest clinical psychologist records → All 1,538 in Minnesota → Look up another NPI →
Verify Cortney Del Duffy in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Minnesota board licenses this profession
Search for license LP6283Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Cortney Del Duffy among 1,538 clinical psychologist records in Minnesota
Cortney Del Duffy, PH.D. is one of 1,538 clinical psychologist records with a practice address in Minnesota. 26% 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 2018, is newer than 84% of them.
- NPI issued2018 · 84% of these records are older, 13% newer
- In a Medicare fileNo · 26% of these records are
- In the CMS Doctors and Clinicians fileYes · 33% of these records are
- Graduated2016 · median 2008 among the 510 with a school on file
- Record last updated2021 · 66% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 103TC0700X and a Minnesota practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
43 clinical psychologist records list a practice address in Duluth
They are 43 of the 4,084 NPPES records with a practice address in Duluth, and 1,538 clinical psychologist records in Minnesota. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 1,538 in Minnesota → Every provider in Duluth → Clinical Psychologist nationwide →
The 8 clinical psychologist records with the nearest ZIP codes
- Jerry Bakka, PH.D.Duluth, MN 558021891865093
- Brenda Bergman, PH.D.Duluth, MN 558021598776387
- Helen Doane, PHDDuluth, MN 558021255407359
- Mary Dressel, PSY.DDuluth, MN 558021205924677
- Richard Duus, PHDDuluth, MN 558021306912498
- Douglas Heck, PHDDuluth, MN 558021053487157
- Walter Plude, MSED, LPDuluth, MN 558021194889188
- David Plude, PSYD, LPDuluth, MN 558021700940715
Common questions
What is Cortney Del Duffy, PH.D.'s NPI number?
Cortney Del Duffy, PH.D.'s National Provider Identifier (NPI) is 1740763085, issued on Sep 12, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Cortney Del Duffy, PH.D. located?
The NPPES record lists a practice address at 306 W Superior St Ste 405, Duluth, MN, 55802. Phone: (218) 203-9335. Providers update this record themselves, so call before visiting.
How can I verify Cortney Del Duffy, PH.D.'s license?
NPPES lists Minnesota license number LP6283, as entered by the provider. Search the Minnesota 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.