Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Mary Allen Olson, APRN, PMHNP-BC

Individual provider Psychiatric/Mental Health Nurse Practitioner · NPI 1497488779

Mary Allen Olson, APRN, PMHNP-BC is a Nurse Practitioner in Hernando, Mississippi. Qualified in 2019, 7 years ago. Practices with In Focus Psychiatry LLC, a 7-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Mississippi.

Years since qualifying
7
Licensed in
MS
In the registry since
2022
What do these letters mean?
APRN — Advanced Practice Registered Nurse
The umbrella licence covering nurse practitioners, midwives, anaesthetists and clinical nurse specialists.
PMHNP-BC — Psychiatric-Mental Health Nurse Practitioner, Board Certified
A board-certified psychiatric nurse practitioner.

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Practice location Address checks out

220 Oak Tree Dr
Hernando, MS 38632-1196
Phone: (662) 510-8606
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 1204 Office Park Dr Ste A, Oxford, MS 38655-3597 — (662) 510-8606

Specialties & licences

Psychiatric/Mental Health Nurse Practitioner (primary) Taxonomy 363LP0808X · Licence 905248 (MS)

Record details

NPI number1497488779
Entity typeIndividual (Type 1)
GenderFemale
Credentials APRN , PMHNP-BC
Sole proprietorNo
NPI enumeratedJuly 5, 2022
Last updated in NPPESMarch 17, 2026
Certification dateMarch 17, 2026

Medicare enrollment

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

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2019 (7 years in practice)
Group practice In Focus Psychiatry Llc — 7 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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