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

Hannah Holbrook, PHD

Individual provider Clinical Psychologist · NPI 1851816185

Hannah Holbrook, PHD is a Clinical Psychologist in Portland, Maine. Licensed in Maine. Registered with an NPI since 2017.

Licensed in
ME
In the registry since
2017
What do these letters mean?
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.

See every abbreviation used in this directory →

Practice location Address checks out

1577 Congress St
Portland, ME 04102-2169
Phone: (207) 662-5522
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Clinical Psychologist (primary) Taxonomy 103TC0700X · Licence PS2550 (ME)

Record details

NPI number1851816185
Entity typeIndividual (Type 1)
GenderFemale
Credentials PHD
Sole proprietorNo
NPI enumeratedAugust 8, 2017
Last updated in NPPESJanuary 8, 2024
Certification dateSeptember 15, 2021
Mailing address20 Stony Ridge Rd, Cumberland Foreside, ME 04110-1416

Other providers in Portland