Darren Marshall Janzen, PSY.D.
Clinical Psychologist · Portland, OR
Darren Marshall Janzen, PSY.D. is a clinical psychologist with a practice address in Portland, Oregon, and NPI 1548393689, issued on Mar 14, 2007. Check the license with the Oregon board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Darren Marshall Janzen
- Credential
- PSY.D.
- Primary taxonomy
- Clinical Psychologist 103TC0700X
- License number
- PSY-202344 ID
Self-reported in NPPES; status is on the state search - Practice location
- 707 SW Gaines St, Portland, OR 97239
- Phone
- (503) 494-3526
- Enumerated
- Mar 14, 2007
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (503) 494-6868
- Entity
- Type 1 · individual
8 nearest clinical psychologist records → All 1,143 in Oregon → Look up another NPI →
Also registered at 707 SW Gaines St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Darren Marshall Janzen 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
The MIPS final score for 2023 (Medicare payment program): 97.8 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Darren Marshall Janzen among 1,143 clinical psychologist records in Oregon
Darren Marshall Janzen, PSY.D. is one of 1,143 clinical psychologist records with a practice address in Oregon. 16% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 24% of them.
- NPI issued2007 · 24% of these records are older, 55% newer
- In a Medicare fileYes · 16% of these records are
- In the CMS Doctors and Clinicians fileNo · 25% of these records are
- Record last updated2007 · 62% 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 Oregon practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
508 clinical psychologist records list a practice address in Portland
They are 508 of the 42,088 NPPES records with a practice address in Portland, and 1,143 clinical psychologist records in Oregon.
All 1,143 in Oregon → Every provider in Portland → Clinical Psychologist nationwide →
The 8 clinical psychologist records with the nearest ZIP codes
- Jennifer Antick, PHDPortland, OR 972391285626507
- David Drummond, PHDPortland, OR 972391659380830
- Esther Freeman, PSYDPortland, OR 972391437165040
- Brian Goff, PH.D.Portland, OR 972391770540742
- Elizabeth Goy, PHDPortland, OR 972391386656197
- David Indest, PSY.D.Portland, OR 972391487666368
- Tracy Jendritza, PSY DPortland, OR 972391063470987
- James Sardo, PH.D.Portland, OR 972391366432643
Common questions
What is Darren Marshall Janzen, PSY.D.'s NPI number?
Darren Marshall Janzen, PSY.D.'s National Provider Identifier (NPI) is 1548393689, issued on Mar 14, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Darren Marshall Janzen, PSY.D. located?
The NPPES record lists a practice address at 707 SW Gaines St, Portland, OR, 97239. Phone: (503) 494-3526. Providers update this record themselves, so call before visiting.
How can I verify Darren Marshall Janzen, PSY.D.'s license?
Search the Oregon board that licenses this profession; the NPPES record confirms identity only.
What is Darren Marshall Janzen, PSY.D.'s MIPS final score?
The 2023 MIPS final score is 97.8 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.