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

Dr. Holly A Davis, PHD

Individual provider Psychologist · NPI 1588349146

Dr. Holly A Davis, PHD is a Psychologist in Muskegon, Michigan. Licensed in Iowa. Registered with an NPI since 2023.

Licensed in
IA
In the registry since
2023
Specialties on file
2
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

2734 E Apple Ave
Muskegon, MI 49442
Phone: (231) 798-4445
Show map & directions

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

Specialties & licences

Counseling Psychologist (primary) Taxonomy 103TC1900X · Licence 101460 (IA)
Psychologist Taxonomy 103T00000X · Licence 101460 (IA)

Record details

NPI number1588349146
Entity typeIndividual (Type 1)
GenderFemale
Credentials PHD
Sole proprietorNo
NPI enumeratedJune 20, 2023
Last updated in NPPESAugust 4, 2025
Certification dateAugust 4, 2025
Mailing address2734 E Apple Ave, Muskegon, MI 49442-4413

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