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Mary E. Gardner, MSN, PMHNP

Mary E. Gardner, MSN, PMHNP

Gender: Female

Biography: Mary "Meg" Gardner, PMHNP-BC, MSN, is certified as a psychiatric-mental health nurse practitioner. She completed her Master's of Science in Nursing Degree at the University of Southern Mississippi in August 2019. While pursuing her Master's Degree, Meg worked at St. Dominic-Jackson Memorial Hospital where she was a registered nurse working in the post-anesthesia care unit. After obtaining her Master's Degree, she worked as a psychiatric-mental health nurse practitioner where she treated and monitored the physical and mental health of her patients. Meg currently works in the Department of Psychiatry and Human Behavior at the Riverchase Flowood clinic where she treats, monitors, and provides counseling to patients and their families.

Practice Locations

Accepted Insurance Plans

The University of Mississippi Medical Center accepts all plans, but may not be an in-network provider with your plan. We encourage you to contact your insurer and ask if the plan is in network with UMMC. Always contact your insurance carrier for specific coverage information.

Network Participation - 2026

MississippiCAN and CHIP [Managed Care programs promulgated by the Mississippi Division of Medicaid]

  • Molina Healthcare of Mississippi, Inc.
  • Magnolia Health (Centene)
  • TrueCare

Affordable Care Act (ACA) Marketplace [Individual plans offered on healthcare.gov]

  • Ambetter from Magnolia Health (Centene)
  • Molina Healthcare of Mississippi, Inc.
  • UHC Marketplace (Madison only)

Medicare Advantage

  • Devoted Health Plans: PPO, HMO, DSNP, CSNP
  • HealthSpring Plans: PPO, HMO, DSNP
  • Humana: PPO, HMO, DSNP, CSNP, ISNP
  • United Healthcare Plans: PPO, HMO, DSNP, CSNP, ISNP
  • WellCare (Centene) Plans: PPO, HMO, DSNP

Commercial - Group and Individual

  • Aetna Plans: PPO, HMO [Includes all facilities except UMMC Madison]
  • BCBSMS Plans: BlueCardPPO, State Health Plan (AHS), Federal Employee Plan (FEP)
  • Cigna Plans: PPO, HMO
  • United Healthcare Plans: PPO, HMO (Includes plans administered by UMR, UnitedHealth Group's wholly owned third-party administrator (TPA) subsidiary)

Transplant Only Networks

  • Optum Plan: Commercial • Programs: Solid Organ, BMT, VAD
  • Emerging Therapy Solutions (ETS) Plan: Commercial • Programs: Solid Organ, BMT, CAR-T, VAD
  • Interlink Plan: Commercial • Programs: Solid Organ, BMT, CAR-T
  • Celtic Plans: Ambetter, WellCare, Magnolia Health MississippiCAN, Magnolia Health CHIP • Programs: Solid Organ, BMT
  • Cigna Lifesource Plan: Commercial • Programs: Solid Organ, BMT, CAR-T, VAD

Dental

  • Avesis Plan: MississippiCAN and CHIP (TrueCare)
  • Always Care/Unum Plan: Commercial

Vision

  • Avesis Plan: MississippiCAN and CHIP (TrueCare)
  • Always Care/Unum Plan: Commercial

Rental Networks (Utilized by self-funded employer group plans and third-party administrators (TPAs))

  • Mississippi Physicians Care Network (MPCN) [If MPCN is present on a Member/Subscriber ID, all UMMC facilities and providers are in-network regardless of TPA.]
  • First Choice Health Plan
  • Claritev (formerly Multiplan)
  • Zelis

Government Programs

  • Humana Military Plan: Tricare
  • United Healthcare Plan: Veterans Affairs Community Care Networks

Plans and Payors UMMC is not in-network with as of April 1, 2026

  • Oscar Health Plan: ACA Marketplace [Final negotiations taking place now. Anticipate in-network participation, effective June 1, 2026.]
  • Cigna (Connect EPO) Plan: ACA Marketplace
  • American Health Advantage Plan: Medicare Advantage
  • Patrius Health (BCBSMS) Plan: Medicare Advantage
  • Aetna Plan: Medicare Advantage

Education

Board Certification: Nurse Practitioner, Psych/Mental Health
Medical Education:University of Southern Mississippi
Medical Education:Mississippi University for Women

Experience

Specialty Certification Licensure

DEA