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

Michael Marshall, APRN, PMHNP

Individual provider Psychiatric/Mental Health Nurse Practitioner · NPI 1245563543

Michael Marshall, APRN, PMHNP is a Psychiatric/Mental Health Nurse Practitioner in Ontario, California. Works from 2 locations. Licensed in California.

Licensed in
CA
In the registry since
2009
Specialties on file
2
What do these letters mean?
APRN — Advanced Practice Registered Nurse
The umbrella licence covering nurse practitioners, midwives, anaesthetists and clinical nurse specialists.
PMHNP — Psychiatric-Mental Health Nurse Practitioner
A nurse practitioner specialising in mental health, able to prescribe psychiatric medication.

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Practice location Address checks out

3200 E Guasti Rd
Ontario, CA 91761-8660
Phone: (909) 755-6610
Fax: (909) 385-3335
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 14677 Merrill Ave, Fontana, CA 92335-4219 — (951) 643-2340

Specialties & licences

Psychiatric/Mental Health Nurse Practitioner (primary) Taxonomy 363LP0808X · Licence 95028122 (CA)
Registered Nurse Taxonomy 163W00000X · Licence 679231 (CA)

Record details

NPI number1245563543
Entity typeIndividual (Type 1)
GenderMale
Credentials APRN , PMHNP
Sole proprietorNo
NPI enumeratedSeptember 17, 2009
Last updated in NPPESFebruary 24, 2026
Certification dateFebruary 24, 2026

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