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Network Participation - 2026
Transplant Only Networks
Gailen D. Marshall Jr., MD, PhD
Specialties: Allergy and Immunology
Gender: Male
Practice Locations
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UMMC Colony Park South
326 Commerce Center Drive, Ridgeland, MS 39157 View Location |
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 - 2026MississippiCAN 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)
- 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)
- 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
- 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
- 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
- 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: | Allergy and Immunology; Internal Medicine |
| Fellowship: | University of Tennessee-Memphis |
| Graduate School: | University of Texas Graduate School of Biomedical Sciences at Galveston |
| Internship: | University of Iowa Roy J. and Lucille A. Carver College of Medicine |
| Medical Education: | University Of Texas Medical Branch At Galveston |
| Residency: | University of Iowa Roy J. and Lucille A. Carver College of Medicine |
| Residency: | University of Tennessee-Memphis |
Experience
Current Positions
| Professor, School of Population Health, UMMC, MS | 11/2017 - Present |
| The R. Faser Triplett Sr. MD Chair in Allergy and Immunology, School of Medicine, Department of Medicine, UMMC | 2012 - Present |
| Vice Chairman for Research, School of Medicine, Department of Medicine, UMMC | 11/2011 - Present |
| Staff Physician and Consultant, G.V. (Sonny) Montgomery Veterans Affairs Medical Center | 10/2007 - Present |
| Chief, Laboratory of Behavioral Immunology Research, School of Medicine, Department of Medicine, UMMC | 2004 - Present |
| Division Director, School of Medicine, Department of Medicine, UMMC | 2004 - Present |
| Professor, School of Medicine, Department of Medicine, UMMC | 2004 - Present |
Specialty Certification Licensure
| DEA | 12/2015 - 01/2019 |
| Certification, Diagnostic Laboratory Immunology, American Board of Allergy & Immunology | 1990 - Present |
| Certification, American Board of Internal Medicine | 09/1988 - Present |
| Certification, American Board of Allergy and Immunology | 2019 - 12/2028 |
| Licensure, Mississippi Licensure, Mississippi State Board of Medical Licensure | 2004 - 06/2022 |
| Certification, American Board of Allergy and Immunology | 1999 - 2029 |
| Certification, American Board of Allergy and Immunology | 1989 - 1999 |
Honors, Awards, and Recognition
| Who's Who in Science and Engineering, 12th Edition, Marquis Who's Who | 2016 |
| 2000 Outstanding Intellectuals of the 21st Century, International Biographical Centre Cambridge England | 2016 |
| Inaugural Recipient of the 2015 Mentor of the Year Award, The Southern Section for Clinical Investigation | 2015 |
| Who's Who in Science and Engineering, Marquis Who's Who | 2011 |
| Distinguished Alumnus Award, University of Texas Medical Branch | 2010 |
| America's Top Physicians | 2009 |
| Distinguished Fellow Award, American College of Allergy, Asthma and Immunology | 2009 |
| The Bernard Berman Memorial Lectureship, American College of Allergy, Asthma, and Immunology | 2008 |
| Distinguished Service Award, American College of Allergy, Asthma, and Immunology | 2007 |
| Who's Who in America, Who's Who | 2006 |
| Who's Who in American Education, Who's Who in America | 2006 |
| The Jaros Memorial Lectureship, American College of Allergy, Asthma and Immunology | 2006 |
| Who's Who in America | 2004 |
| Who's Who in Medicine and Healthcare, Who's Who in America | 2004 |
| The Daniel Goodman Lectureship, American College of Allergy, Asthma and Immunology | 2004 |
| Selected to the Guide to Top Doctors, Center for the Study of Services, Washington, D.C. | 2003 |
| The Jean A Chapman Lectureship, American College of Allergy, Asthma and Immunology | 2003 |
| Honored Speaker Award, The University of Texas - Health Science Center at Houston Medical School | 2002 |
| Best Doctors in America | 2001 |
| Who's Who in the South and Southwest, Who's Who | 2000 |
| Who's Who in the South and Southwest, Who's Who | 1995 |
| Excellence in Teaching Award, University of Texas Health Science Center | 1994 |
| Excellence in Teaching Award, University of Texas Health Science Center | 1991 |
| Clinical Teaching Award, Department of Internal Medicine - Baptist Memorial Hospital, Memphis, TN | 1987 |
| President's Grant-In-Aid-Award, American Academy of Allergy & Immunology | 1986 |
| NIH Postdoctoral Fellowship, University of Iowa - Immunology Training Grant | 1985 |
| Who's Who in Frontiers of American Science, Who's Who in America | 1985 |
| James W. McLaughlin Postdoctoral Fellowship, University of Texas Medical Branch | 1979 |
| President's Award for Best Paper, The Reticuloendothelial Society | 1979 |
| S. Edward Sulkin Awards, Texas Branch - American Society of Microbiology | 1977 |
| James W. McLaughlin Predoctoral Fellowship, University of Texas - Graduate School of Biomedical Science | 1976 |
| S. Edward Sulkin Awards, Texas Branch - American Society of Microbiology | 1975 |