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Dr. Gailen D. Marshall Jr., PhD, MD

Accepting New Patients
(Dr. Gailen Daugherty Marshall, MD)

(No ratings)

Specializes in: Adult Allergy & Immunology
University of Texas Medical Branch School of Medicine
878 Lakeland Drive
Jackson, MS 39216

Dr. Gailen D. Marshall Jr., PhD, MD is an allergist in Jackson, MS specializing in adult allergy & immunology. He graduated from University of Texas Medical Branch School of Medicine. Dr. Gailen D. Marshall Jr., PhD, MD is affiliated with U.S. Department of Veterans Affairs and University of Mississippi Medical Center.

View Doctor's Full Profile (601) 815-1078

Office Locations

1500 East Woodrow Wilson Drive G. V. Montgomery Vamc (586)
Jackson, MS 39216
open_in_new
326 Commerce Center Drive
Ridgeland, MS 39157
open_in_new
878 Lakeland Drive
Jackson, MS 39216
(601) 815-1078
open_in_new

In The News (see more mentions in the news)

“Dr. Gailen Marshall, chair of the allergy and immunology department at the University of Mississippi Medical Center, said that when he began practicing nearly 40 years ago, allergy seasons were...”—"Spring Allergy Season Has Arrived. Here's What to Know. (Published 2024)", New York Times, March 2024
“Gailen Marshall, Jr., editor-in-chief of the Annals of Allergy, Asthma and Immunology, confirmed that Randhawa submitted two papers to the journal in 2018, both of which were rejected.”—"An unorthodox allergy clinic seeks to disrupt medicine", Salon, April 2021
“Synthetic clothes "When synthetic fabrics such as nylon and polyester rub against each other, they can generate static electric charges that can cause more pollen to stick to your clothes, making...”—"Horrible allergies? Find out which sneaky seasonal sources are to blame", Fox News, March 2015

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

Volume of procedures performed by Dr. Gailen D. Marshall Jr., PhD, MD for Medicare patients.

doctor visit 90

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

Volume of procedures performed by Dr. Gailen D. Marshall Jr., PhD, MD for Medicare patients.

doctor visit 116

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Gailen D. Marshall Jr., PhD, MD.

Gender
Male 28
Female 36
Ethnicity
Non-Hispanic White 51
Black 0
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 25
From 75 to 84 17
85 and over 0
Less than 65 22

Conditions of Medicare patients treated by Dr. Gailen D. Marshall Jr., PhD, MD in 2013

Hypertension 61
High Cholesterol 41
Stroke 0
Ischemic Heart Disease 31
Depression 19
Chronic Kidney Disease 0
Asthma 30
Osteoperosis 0
Atrial Fibrilation 0
Heart Failure 0
Chronic Obstructive Pulmonary Disease 0
Diabetes 23
Dementia 0
Cancer 0

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

Volume of procedures performed by Dr. Gailen D. Marshall Jr., PhD, MD for Medicare patients.

doctor visit 90

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Gailen D. Marshall Jr., PhD, MD.

Gender
Male 18
Female 42
Ethnicity
Non-Hispanic White 43
Black 0
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 24
From 75 to 84 0
85 and over 0
Less than 65 22

Conditions of Medicare patients treated by Dr. Gailen D. Marshall Jr., PhD, MD in 2014

Hypertension 65
High Cholesterol 38
Stroke 0
Ischemic Heart Disease 22
Depression 23
Chronic Kidney Disease 0
Asthma 50
Osteoperosis 0
Atrial Fibrilation 0
Heart Failure 0
Chronic Obstructive Pulmonary Disease 0
Diabetes 22
Dementia 0
Cancer 0

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

Volume of procedures performed by Dr. Gailen D. Marshall Jr., PhD, MD for Medicare patients.

doctor visit 84

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Gailen D. Marshall Jr., PhD, MD.

Gender
Male 46
Female 74
Ethnicity
Non-Hispanic White 94
Black 0
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 50
From 75 to 84 0
85 and over 0
Less than 65 34

Conditions of Medicare patients treated by Dr. Gailen D. Marshall Jr., PhD, MD in 2015

Hypertension 55
High Cholesterol 35
Stroke 0
Ischemic Heart Disease 30
Depression 28
Chronic Kidney Disease 0
Asthma 42
Osteoperosis 0
Atrial Fibrilation 0
Heart Failure 0
Chronic Obstructive Pulmonary Disease 0
Diabetes 25
Dementia 0
Cancer 0

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

Volume of procedures performed by Dr. Gailen D. Marshall Jr., PhD, MD for Medicare patients.

doctor visit 84

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Gailen D. Marshall Jr., PhD, MD.

Gender
Male 26
Female 33
Ethnicity
Non-Hispanic White 40
Black 0
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 28
From 75 to 84 0
85 and over 0
Less than 65 16

Conditions of Medicare patients treated by Dr. Gailen D. Marshall Jr., PhD, MD in 2016

Hypertension 58
High Cholesterol 39
Stroke 0
Ischemic Heart Disease 29
Depression 19
Chronic Kidney Disease 24
Asthma 44
Osteoperosis 0
Atrial Fibrilation 0
Heart Failure 0
Chronic Obstructive Pulmonary Disease 0
Diabetes 34
Dementia 0
Cancer 0

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

Volume of procedures performed by Dr. Gailen D. Marshall Jr., PhD, MD for Medicare patients.

doctor visit 130

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Gailen D. Marshall Jr., PhD, MD.

Gender
Male 34
Female 61
Ethnicity
Non-Hispanic White 69
Black 0
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 46
From 75 to 84 0
85 and over 0
Less than 65 28

Conditions of Medicare patients treated by Dr. Gailen D. Marshall Jr., PhD, MD in 2017

Hypertension 67
High Cholesterol 39
Stroke 0
Ischemic Heart Disease 31
Depression 26
Chronic Kidney Disease 21
Asthma 44
Osteoperosis 12
Atrial Fibrilation 0
Heart Failure 15
Chronic Obstructive Pulmonary Disease 17
Diabetes 28
Dementia 0
Cancer 0

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

Volume of procedures performed by Dr. Gailen D. Marshall Jr., PhD, MD for Medicare patients.

doctor visit 174

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Gailen D. Marshall Jr., PhD, MD.

Gender
Male 35
Female 80
Ethnicity
Non-Hispanic White 79
Black 0
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 56
From 75 to 84 0
85 and over 0
Less than 65 35

Conditions of Medicare patients treated by Dr. Gailen D. Marshall Jr., PhD, MD in 2018

Hypertension 70
High Cholesterol 39
Stroke 0
Ischemic Heart Disease 28
Depression 21
Chronic Kidney Disease 23
Asthma 42
Osteoperosis 0
Atrial Fibrilation 0
Heart Failure 14
Chronic Obstructive Pulmonary Disease 18
Diabetes 33
Dementia 0
Cancer 0

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

Volume of procedures performed by Dr. Gailen D. Marshall Jr., PhD, MD for Medicare patients.

doctor visit 133

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Gailen D. Marshall Jr., PhD, MD.

Gender
Male 30
Female 65
Ethnicity
Non-Hispanic White 63
Black 0
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 49
From 75 to 84 0
85 and over 0
Less than 65 25

Conditions of Medicare patients treated by Dr. Gailen D. Marshall Jr., PhD, MD in 2019

Hypertension 71
High Cholesterol 45
Stroke 0
Ischemic Heart Disease 25
Depression 31
Chronic Kidney Disease 20
Asthma 48
Osteoperosis 12
Atrial Fibrilation 0
Heart Failure 19
Chronic Obstructive Pulmonary Disease 17
Diabetes 34
Dementia 0
Cancer 0

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

Volume of procedures performed by Dr. Gailen D. Marshall Jr., PhD, MD for Medicare patients.

doctor visit 81

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Gailen D. Marshall Jr., PhD, MD.

Gender
Male 28
Female 52
Ethnicity
Non-Hispanic White 55
Black 0
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 39
From 75 to 84 0
85 and over 0
Less than 65 20

Conditions of Medicare patients treated by Dr. Gailen D. Marshall Jr., PhD, MD in 2020

Hypertension 65
High Cholesterol 48
Stroke 0
Ischemic Heart Disease 28
Depression 26
Chronic Kidney Disease 23
Asthma 33
Osteoperosis 0
Atrial Fibrilation 0
Heart Failure 20
Chronic Obstructive Pulmonary Disease 14
Diabetes 29
Dementia 0
Cancer 0

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

Volume of procedures performed by Dr. Gailen D. Marshall Jr., PhD, MD for Medicare patients.

doctor visit 85

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Gailen D. Marshall Jr., PhD, MD.

Gender
Male 26
Female 50
Ethnicity
Non-Hispanic White 50
Black 0
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 32
From 75 to 84 22
85 and over 0
Less than 65 0

Conditions of Medicare patients treated by Dr. Gailen D. Marshall Jr., PhD, MD in 2021

Hypertension 64
High Cholesterol 51
Stroke 0
Ischemic Heart Disease 34
Depression 0
Chronic Kidney Disease 22
Asthma 36
Osteoperosis 0
Atrial Fibrilation 0
Heart Failure 16
Chronic Obstructive Pulmonary Disease 0
Diabetes 33
Dementia 0
Cancer 0

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

Volume of procedures performed by Dr. Gailen D. Marshall Jr., PhD, MD for Medicare patients.

doctor visit 112

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Gailen D. Marshall Jr., PhD, MD.

Gender
Male 38
Female 65
Ethnicity
Non-Hispanic White 64
Black 0
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 37
From 75 to 84 33
85 and over 0
Less than 65 0

Conditions of Medicare patients treated by Dr. Gailen D. Marshall Jr., PhD, MD in 2022

Hypertension 73
High Cholesterol 59
Stroke 12
Ischemic Heart Disease 27
Depression 16
Chronic Kidney Disease 13
Asthma 38
Osteoperosis 19
Atrial Fibrilation 0
Heart Failure 12
Chronic Obstructive Pulmonary Disease 13
Diabetes 29
Dementia 0
Cancer 17

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

Volume of procedures performed by Dr. Gailen D. Marshall Jr., PhD, MD for Medicare patients.

doctor visit 102

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. Gailen D. Marshall Jr., PhD, MD.

Gender
Male 22
Female 62
Ethnicity
Non-Hispanic White 57
Black 0
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 38
From 75 to 84 23
85 and over 0
Less than 65 0

Conditions of Medicare patients treated by Dr. Gailen D. Marshall Jr., PhD, MD in 2023

Hypertension 71
High Cholesterol 64
Stroke 0
Ischemic Heart Disease 18
Depression 17
Chronic Kidney Disease 13
Asthma 44
Osteoperosis 18
Atrial Fibrilation 14
Heart Failure 0
Chronic Obstructive Pulmonary Disease 0
Diabetes 19
Dementia 0
Cancer 19

Medicare Procedure and Patient Information

2024 Medicare Procedure Volume

Volume of procedures performed by Dr. Gailen D. Marshall Jr., PhD, MD for Medicare patients.

doctor visit 135

2024 Medicare Patient Data

Information about Medicare patients treated by Dr. Gailen D. Marshall Jr., PhD, MD.

Gender
Male 25
Female 62
Ethnicity
Non-Hispanic White 54
Black 0
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 39
From 75 to 84 29
85 and over 0
Less than 65 0

Conditions of Medicare patients treated by Dr. Gailen D. Marshall Jr., PhD, MD in 2024

Hypertension 75
High Cholesterol 68
Stroke 0
Ischemic Heart Disease 24
Depression 18
Chronic Kidney Disease 23
Asthma 37
Osteoperosis 16
Atrial Fibrilation 13
Heart Failure 0
Chronic Obstructive Pulmonary Disease 18
Diabetes 37
Dementia 0
Cancer 23

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2024

Volume of procedures performed by Dr. Gailen D. Marshall Jr., PhD, MD for Medicare patients.

doctor visit 108

Average Medicare Patient Data From 2012 - 2024

Information about Medicare patients treated by Dr. Gailen D. Marshall Jr., PhD, MD.

Gender
Male 27
Female 52
Ethnicity
Black / African American 0
Asian / Pacific Islander 0
Non-Hispanic White 55
Native American / Alaskan Native 0
Hispanic 0
Other 0
Age
75 to 84 9
85 and over 0
Less than 65 15
65 to 74 35

Average of Total of Conditions of Medicare patients treated by Dr. Gailen D. Marshall Jr., PhD, MD From 2012 - 2024

The highest averages of the most common conditions of Medicare patients that Dr. Gailen D. Marshall Jr., PhD, MD treated were hypertension, high cholesterol, asthma and diabetes.

Hypertension 61
High Cholesterol 43
Stroke 0
Ischemic Heart Disease 25
Depression 18
Chronic Kidney Disease 14
Asthma 37
Osteoporosis 5
Heart Failure 7
Chronic Obstructive Pulmonary Disease 7
Diabetes 26
Atrial Fibrillation 2
Cancer 4
Dementia 0

Education & Training

Dr. Gailen D. Marshall Jr., PhD, MD graduated from University of Texas Medical Branch School of Medicine. He completed residency at University of Iowa Affiliated Hospitals. He is certified by the Board Certification: Internal Medicine and has a state license in Mississippi.

Medical School: University of Texas Medical Branch School of Medicine

Residency: University of Iowa Affiliated Hospitals

Board Certification: Board Certification: Internal Medicine

Licensed In: Mississippi

Affiliations & Hospitals

Dr. Gailen D. Marshall Jr., PhD, MD is associated with these hospitals and organizations:

U.S. Department of Veterans Affairs
University of Mississippi Medical Center

Insurance Information

Please note: Insurance information may change at any time, and the provider may accept your insurance plan even if it is not listed below. Please contact the provider's office to confirm that your insurance is accepted.

Dr. Gailen D. Marshall Jr., PhD, MD appears to accept the following insurance providers: First Choice Health, HealthSpring, WellCare, Medicare Advantage, MultiPlan, United Healthcare, Humana, Cigna, Centene, Molina Healthcare, TrueCare, Interlink Plan: Commercial • Programs: Solid Organ, BMT, CAR-T, Always Care/Unum Plan: Commercial, 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.], Avesis Plan: MississippiCAN and CHIP (TrueCare), Emerging Therapy Solutions (ETS) Plan: Commercial • Programs: Solid Organ, BMT, CAR-T, VAD, Zelis, Oscar Health Plan: ACA Marketplace [Final negotiations taking place now. Anticipate in-network participation, effective June 1, 2026.], Aetna Plans: PPO, HMO [Includes all facilities except UMMC Madison], Optum Plan: Commercial • Programs: Solid Organ, BMT, VAD, BCBSMS Plans: BlueCardPPO, State Health Plan (AHS), Federal Employee Plan (FEP) and Devoted Health Plans: PPO, HMO, DSNP, CSNP.

Insurance Accepted by Provider includes:

According to our sources, Dr. Gailen D. Marshall Jr., PhD, MD accepts the following insurance providers:

First Choice Health
HealthSpring
WellCare
Medicare Advantage
MultiPlan
United Healthcare
Humana
Cigna
Centene
Molina Healthcare
TrueCare
Interlink Plan: Commercial • Programs: Solid Organ, BMT, CAR-T
Always Care/Unum Plan: Commercial
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.]
Avesis Plan: MississippiCAN and CHIP (TrueCare)
Emerging Therapy Solutions (ETS) Plan: Commercial • Programs: Solid Organ, BMT, CAR-T, VAD
Zelis
Oscar Health Plan: ACA Marketplace [Final negotiations taking place now. Anticipate in-network participation, effective June 1, 2026.]
Aetna Plans: PPO, HMO [Includes all facilities except UMMC Madison]
Optum Plan: Commercial • Programs: Solid Organ, BMT, VAD
BCBSMS Plans: BlueCardPPO, State Health Plan (AHS), Federal Employee Plan (FEP)
Devoted Health Plans: PPO, HMO, DSNP, CSNP

Ratings & Reviews

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General Payments

These charts describe general payments received by Dr. Gailen D. Marshall Jr., PhD, MD. Doctors may receive payments for a number of reasons, including meal compensation, travel compensation, and consulting.

Payments by Company
Genentech USA, Inc. $3,358 XOLAIR
$3,300 		Esbriet
$44
$14
AstraZeneca Pharmaceuticals LP $359 FASENRA
$236 		SYMBICORT
$84
$39
Novartis Pharmaceuticals Corporation $216 XOLAIR
$216
CSL Behring $134 Hizentra
$83 		Haegarda
$52
GlaxoSmithKline, LLC. $66 NUCALA
$66
Other $213 Oralair
$62 		DULERA
$24 		GAMMAGARDKIOVIG
$18 		Kineret
$18 		SOLIRIS
$17 		Other
$74
Types of Payments
Consulting Fee $3,450
Food and Beverage $831
Travel and Lodging $61
Education $5

Research Payments

Dr. Gailen D. Marshall Jr., PhD, MD has received 58 research payments totaling $237,444.

Biography

Dr. Gailen Marshall's specialty is adult allergy & immunology. He studied medicine at the University of Texas Medical Branch School of Medicine. Dr. Marshall completed his residency training at a hospital affiliated with the University of Iowa and a hospital affiliated with the University of Tennessee. His clinical interests encompass asthma and allergies. Dr. Marshall can accept Blue California, Coventry, and CorVel, as well as other insurance carriers. He has received distinctions including Inaugural Recipient of the; Mentor of the Year Award, The Southern Section for Clinical Investigation; and Who's Who in Science and Engineering, Marquis Who's Who. He is professionally affiliated with the University of Mississippi Medical Center and U.S. Department of Veterans Affairs. University of Mississippi Medical Center reports that he is accepting new patients at his office in Ridgeland, MS.

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