Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Mary Brennan, MA, MS, PHD

Individual provider Mental Health Counselor · NPI 1174952378

Mary Brennan, MA, MS, PHD is a Mental Health Counselor in Honolulu, Hawaii. Licensed in Colorado and Hawaii. Registered with an NPI since 2013.

Licensed in
CO, HI
In the registry since
2013
Specialties on file
4
What do these letters mean?
MA — Master of Arts
A graduate arts degree.
MS — Master of Science
A graduate science degree.
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

459 Patterson Rd # 116
Honolulu, HI 96819-1522
Phone: (808) 433-0660
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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 PSY-2191-0 (HI)
Mental Health Counselor Taxonomy 101YM0800X
Clinical Psychologist Taxonomy 103TC0700X · Licence PSY.0006055 (CO)
Student in an Organized Health Care Education/Training Program Taxonomy 390200000X

Record details

NPI number1174952378
Entity typeIndividual (Type 1)
GenderFemale
Credentials MA , MS , PHD
Sole proprietorNo
NPI enumeratedNovember 7, 2013
Last updated in NPPESJanuary 3, 2025
Certification dateJanuary 3, 2025

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