MARY ALLEN OLSON APRN, PMHNP-BC
NPI 1497488779
Nurse Practitioner - Psychiatric/Mental Health in Hernando, MS
About Mary Allen Olson Aprn, Pmhnp-bc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARY ALLEN OLSON APRN, PMHNP-BC (NPI 1497488779) is an individual psychiatric/mental health provider in Hernando, Mississippi, licensed in Mississippi (905248) and active in the NPI registry since July 2022. She is enrolled in Medicare PECOS, maintains a secondary practice location in Oxford, and is a graduate of Other (2019).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Mary Allen Olson Aprn, Pmhnp-bc is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
2Medicare enrollment records show Mary Allen Olson reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Hernando, MS 38632
- Reassigned Medicare billing, Mississippi enrollment
- 11 clinicians in this Medicare group
Oxford, MS 38655
- Reassigned Medicare billing, Mississippi enrollment
- 60 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 2
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 38632 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 4
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
HERNANDO, MS 38632
HERNANDO, MS 38632
HERNANDO, MS 38632
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Mary Allen Olson's NPI number?
The NPI number for Mary Allen Olson is 1497488779. It was assigned to this individual provider in the NPPES registry on July 5, 2022.
Where is Mary Allen Olson located?
Mary Allen Olson practices at 220 Oak Tree Dr, Hernando, MS 38632. The listed phone number is (662) 510-8606.
What is Mary Allen Olson's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Psychiatric/Mental Health, with taxonomy code 363LP0808X.
Is Mary Allen Olson enrolled in Medicare?
Yes. Mary Allen Olson is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Mary Allen Olson's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mary Allen Olson reassigns Medicare benefits to 2 organizations: In Focus Psychiatry LLC (Hernando, MS) and Right Track Medical Group, Inc (Oxford, MS). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Mary Allen Olson's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Mary Allen Olson accept?
Health plans from Ambetter Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections, Ambetter of Alabama and Ambetter of Tennessee and 4 other insurers list Mary Allen Olson as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Mary Allen Olson was last updated on March 17, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Mary Allen Olson, APRN, PMHNP-BC · NPI 1497488779
Psychiatric/Mental Health physician in Hernando, Mississippi. Individual provider, active in the CMS NPPES registry since July 5, 2022.
## Identity
- **NPI:** 1497488779 (Entity type: Individual)
- **Enumerated:** July 5, 2022
- **Primary specialty:** Nurse Practitioner - Psychiatric/Mental Health · taxonomy 363LP0808X
- **State license:** 905248 (Mississippi)
- **Sole proprietor:** No
## Practice location
- **Address:** 220 OAK TREE DR, Hernando, MS 38632-1196
- **Phone:** (662) 510-8606
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): In Focus Psychiatry LLC (NPI 1578913885, Hernando, MS); Right Track Medical Group, Inc (NPI 1972080257, Oxford, MS) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2019
## Record status
- **NPPES last updated:** March 17, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1497488779) · Data from the CMS NPPES public registry.