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Dr. Margaret Ellen Flanagan, MD

Accepting New Patients

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Specializes in: Neuropathology

Trinity College Dublin School of Medicine

4502 Medical Drive
San Antonio, TX 78229

(210) 358-4000

Dr. Margaret Ellen Flanagan, MD is a neuropathologist in San Antonio, TX specializing in neuropathology. She graduated from Trinity College Dublin School of Medicine. Dr. Margaret Ellen Flanagan, MD is affiliated with UT Health San Antonio and University Health.

Office Locations

University Health

4502 Medical Drive
San Antonio, TX 78229

(210) 358-4000

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In The News

“Dr. Goodall s work may have offered other health advantages, said Dr. Margaret Flanagan, a neuropathologist at the University of Texas Health Science Center at San Antonio.”—"What Jane Goodall Taught Us About Living a Long Life", New York Times, October 2025

“Margaret Flanagan, now an associate professor at University of Texas Health San Antonio, worked beside Wu for more than three years at the Feinberg School of Medicine.”—"Northwestern sued over suicide of professor targeted in China investigation", Chicago Tribune, July 2025

“What's more, having a sense of purpose increases one's positive outlook and reduces the likelihood of late-life depression and dementia, said Dr. Margaret Flanagan, a neuropathologist at the...”—"The Surprising Health Benefits of Becoming Pope", New York Times, May 2025

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Margaret Ellen Flanagan, MD treated as a neuropathologist in San Antonio, TX during 2020 were lab tests.

Volume of procedures performed by Dr. Margaret Ellen Flanagan, MD for Medicare patients.

lab tests	13

Conditions of Medicare patients treated by Dr. Margaret Ellen Flanagan, MD in 2020

The most common conditions of Medicare patients that Dr. Margaret Ellen Flanagan, MD treated during 2020 were hypertension.

Hypertension	75
High Cholesterol	0
Stroke	0
Ischemic Heart Disease	0
Depression	0
Chronic Kidney Disease	0
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	0
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Margaret Ellen Flanagan, MD treated as a neuropathologist in San Antonio, TX during 2021 were lab tests and consultation.

Volume of procedures performed by Dr. Margaret Ellen Flanagan, MD for Medicare patients.

consultation	17
lab tests	40

Conditions of Medicare patients treated by Dr. Margaret Ellen Flanagan, MD in 2021

The most common conditions of Medicare patients that Dr. Margaret Ellen Flanagan, MD treated during 2021 were hypertension and high cholesterol.

Hypertension	73
High Cholesterol	58
Stroke	0
Ischemic Heart Disease	0
Depression	0
Chronic Kidney Disease	0
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	0
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

Conditions of Medicare patients treated by Dr. Margaret Ellen Flanagan, MD in 2022

The most common conditions of Medicare patients that Dr. Margaret Ellen Flanagan, MD treated during 2022 were high cholesterol, hypertension and stroke.

Hypertension	75
High Cholesterol	75
Stroke	62
Ischemic Heart Disease	0
Depression	0
Chronic Kidney Disease	0
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	0
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2020 - 2022

Volume of procedures performed by Dr. Margaret Ellen Flanagan, MD for Medicare patients.

The highest averages for the top procedures that Dr. Margaret Ellen Flanagan, MD treated as a neuropathologist in San Antonio, TX were lab tests and consultation.

consultation	17
lab tests	26

Average of Total of Conditions of Medicare patients treated by Dr. Margaret Ellen Flanagan, MD From 2020 - 2022

The highest averages of the most common conditions of Medicare patients that Dr. Margaret Ellen Flanagan, MD treated were hypertension, high cholesterol and stroke.

Hypertension	74
High Cholesterol	44
Stroke	20
Ischemic Heart Disease	0
Depression	0
Chronic Kidney Disease	0
Asthma	0
Osteoporosis	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	0
Atrial Fibrillation	0
Dementia	0
Cancer	0

Education & Training

Dr. Margaret Ellen Flanagan, MD graduated from Trinity College Dublin School of Medicine. She completed residency at University of Washington Affiliated Hospitals. She is certified by the American Board of Pathology and has a state license in Texas.

Medical School: Trinity College Dublin School of Medicine

Residency: University of Washington Affiliated Hospitals

Board Certification: American Board of Pathology

Licensed In: Texas

Affiliations & Hospitals

Dr. Margaret Ellen Flanagan, MD is associated with these hospitals and organizations:

UT Health San Antonio

University Health

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. Margaret Ellen Flanagan, MD appears to accept the following insurance providers: MultiPlan, Prime Health, Magellan Health Services, United Healthcare PPO, United Healthcare POS, United Healthcare HMO, United Healthcare EPO, Humana HMO, Galaxy Health Network, TRICARE, Community Care Network (CCN), Aetna EPO, Trustmark , Aetna PPO, Aetna HMO, Coventry HMO, BlueCross BlueShield of Texas, Medicare Advantage, TriWest, Three Rivers Provider Network PPO, Coventry PPO, Coventry Workers' Compensation, HealthSpring, United Healthcare, Medicaid, Humana, Cigna, Molina Healthcare, First Health, WellPoint, HealthSmart, Humana PPO, Superior Health Plan, Private Healthcare Systems (PHCS), OptumHealth - Transplant ONLY, Zelis - Commercial, Group and Pension Administrators - GPA, CHAMPVA - Governmental, Curative - Commercial, Administrative Concepts - Commercial, Scott & White Health Plan - HMO, Ancira Enterprises, Point Comfort Underwriters (PCU) - Refugee Medical Assistance, Entrust - TPA, Aetna - Transplant ONLY, Tokio Marine - Transplant, 6 Degrees - Transplant, SANA Benefits - Commercial, Aetna - Commercial/Exchange (IFP), Aetna - MC Advantage, Oscar - Commercial Exchange, Velocity National Provider Network - Commercial PPO, Medicare (Traditional) - Medicare, Scott & White Health Plan - PPO, HMA LLC - Commercial, EBSO - TPA, University of Incarnate Word (Gilsbar) - Direct Employer, Independent Medical Systems (IMS) - PPO, Universal Benefits Consortium - Brokerage Firm (School Districts), Gilsbar - Commercial, Injury Management Organization - Workers Compensation, 90 Degree Benefits - Commercial, Allied Benefit Systems, Imagine 360 - Commercial, Interlink - Transplant, Point Comfort Underwriters (PCU) - Unaccompanied Children, Velocity National Provider Network - Wrap Network, Allegiance - Universal Benefits Consortium, Imperial Health - Commercial/Exchange, WebTPA - Commercial, Insurance Accepted, Aetna - Smart Care EPO, Veterans Administration - Governmental, Provider Network of America (PNOA) - Commercial, Century Healthcare - Commercial, Ancira Enterprises - Direct Employer, Benefit Administrative Systems and LifeTrac - Transplant.

Insurance Accepted by Provider includes:

According to our sources, Dr. Margaret Ellen Flanagan, MD accepts the following insurance providers:

MultiPlan

Prime Health

Magellan Health Services

United Healthcare PPO

United Healthcare POS

United Healthcare HMO

United Healthcare EPO

Humana HMO

Galaxy Health Network

TRICARE

Community Care Network (CCN)

Aetna EPO

Trustmark

Aetna PPO

Aetna HMO

Coventry HMO

BlueCross BlueShield of Texas

Medicare Advantage

TriWest

Three Rivers Provider Network PPO

Coventry PPO

Coventry Workers' Compensation

HealthSpring

United Healthcare

Medicaid

Humana

Cigna

Molina Healthcare

First Health

WellPoint

HealthSmart

Humana PPO

Superior Health Plan

Private Healthcare Systems (PHCS)

OptumHealth - Transplant ONLY

Zelis - Commercial

Group and Pension Administrators - GPA

CHAMPVA - Governmental

Curative - Commercial

Administrative Concepts - Commercial

Scott & White Health Plan - HMO

Ancira Enterprises

Point Comfort Underwriters (PCU) - Refugee Medical Assistance

Entrust - TPA

Aetna - Transplant ONLY

Tokio Marine - Transplant

6 Degrees - Transplant

SANA Benefits - Commercial

Aetna - Commercial/Exchange (IFP)

Aetna - MC Advantage

Oscar - Commercial Exchange

Velocity National Provider Network - Commercial PPO

Medicare (Traditional) - Medicare

Scott & White Health Plan - PPO

HMA LLC - Commercial

EBSO - TPA

University of Incarnate Word (Gilsbar) - Direct Employer

Independent Medical Systems (IMS) - PPO

Universal Benefits Consortium - Brokerage Firm (School Districts)

Gilsbar - Commercial

Injury Management Organization - Workers Compensation

90 Degree Benefits - Commercial

Allied Benefit Systems

Imagine 360 - Commercial

Interlink - Transplant

Point Comfort Underwriters (PCU) - Unaccompanied Children

Velocity National Provider Network - Wrap Network

Allegiance - Universal Benefits Consortium

Imperial Health - Commercial/Exchange

WebTPA - Commercial

Insurance Accepted

Aetna - Smart Care EPO

Veterans Administration - Governmental

Provider Network of America (PNOA) - Commercial

Century Healthcare - Commercial

Ancira Enterprises - Direct Employer

Benefit Administrative Systems

LifeTrac - Transplant

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Biography

Dr. Margaret Flanagan is a neuropathology specialist in San Antonio, TX. Dr. Flanagan is affiliated with UT Health San Antonio and the University Health. She can take Trustmark, Aetna EPO, Blue California, and more. UT Health San Antonio reports that she is accepting new patients at her office in San Antonio, TX. After completing medical school at Trinity College Dublin School of Medicine, Dr. Flanagan performed her residency at a hospital affiliated with the University of Washington.