Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Maureen Lassen, PHD

Individual provider Clinical Psychologist · NPI 1275687725

Maureen Lassen, PHD is a Clinical Psychologist in Mesa, Arizona. Qualified in 1974, 52 years ago. Practices as a sole proprietor, accepts Medicare assignment and offers telehealth. Licensed in Arizona.

Years since qualifying
52
Licensed in
AZ
In the registry since
2007
What do these letters mean?
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.

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Practice location Address checks out

1234 S Power Rd Ste 254
Mesa, AZ 85206-3700
Phone: (480) 785-0525
Fax: (480) 656-4528
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Clinical Psychologist (primary) Taxonomy 103TC0700X · Licence 691 (AZ)

Record details

NPI number1275687725
Entity typeIndividual (Type 1)
GenderFemale
Credentials PHD
Sole proprietorYes
NPI enumeratedJanuary 22, 2007
Last updated in NPPESDecember 20, 2019
Certification dateDecember 20, 2019

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyCLINICAL PSYCHOLOGIST
Medical schoolOTHER
Graduated 1974 (52 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients29
Services billed 303 a service is one billed item, such as a visit, a test or a procedure
Average patient age73

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

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