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Home > NC Providers > Diagnostic Radiologists

Dr. Karen S. Johnson, MD, MS

(Dr. Karen Schwenk Johnson, MD)

(No ratings)

Specializes in: Diagnostic Radiology

Loyola University Chicago, Stritch School of Medicine (2001)

Professional interests include: breast imaging

20 Duke Medicine Circle
Durham, NC 27710

(919) 681-6900

Dr. Karen S. Johnson, MD, MS is a diagnostic radiologist in Durham, NC specializing in diagnostic radiology. She graduated from Loyola University Chicago, Stritch School of Medicine in 2001 and has 25 years of experience. Dr. Karen S. Johnson, MD, MS is affiliated with Duke Health.

Office Locations

Duke Health

20 Duke Medicine Circle
Durham, NC 27710

(919) 681-6900

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Noteworthy Medicare Patient Procedures Performed by Dr. Karen S. Johnson, MD, MS in 2023

Click on any procedure below to see further details on volume and pricing among Medicare patients.

Top 5%

By Affordability:

2-D diagnostic mammogram

In 2023, Dr. Karen S. Johnson, MD, MS had a list price for 2-D diagnostic mammogram, 2-D mammogram, diagnostic imaging, diagnostic mammogram, mammogram (breast X-ray), and screening mammogram that was lower than the list prices billed to Medicare by 95% of providers in related specialties within North Carolina. Actual amounts paid by patients can vary widely depending on a number of factors, including insurance coverage. A lower list price, however, might mean lower fees when paying without insurance.

Top 10%

By Affordability:

breast imaging

women's imaging

In 2023, Dr. Karen S. Johnson, MD, MS had a list price for breast imaging, and women's imaging that was lower than the list prices billed to Medicare by 90% of providers in related specialties within North Carolina. Actual amounts paid by patients can vary widely depending on a number of factors, including insurance coverage. A lower list price, however, might mean lower fees when paying without insurance.

Top 25%

By Volume:

2-D diagnostic mammogram

In 2012, Dr. Karen S. Johnson, MD, MS performed more 2-D diagnostic mammogram procedures for Medicare patients than 75% of providers in related specialties within North Carolina.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Karen S. Johnson, MD, MS treated as a diagnostic radiologist in Durham, NC during 2012 were breast procedures, women's imaging, X-rays and preventive care.

Volume of procedures performed by Dr. Karen S. Johnson, MD, MS for Medicare patients.

breast procedures	1122
diagnostic imaging	363
diagnostic procedures	38
excision	14
image guided procedures	51
minimally invasive procedures	51
minor procedures	38
open surgery	14
preventive care	588
ultrasound (sonogram)	120
women's imaging	1071
X-rays	951

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Karen S. Johnson, MD, MS treated as a diagnostic radiologist in Durham, NC during 2013 were breast procedures, women's imaging, X-rays and preventive care.

Volume of procedures performed by Dr. Karen S. Johnson, MD, MS for Medicare patients.

breast procedures	1696
diagnostic imaging	365
diagnostic procedures	50
excision	30
image guided procedures	50
minimally invasive procedures	50
minor procedures	50
open surgery	30
preventive care	1153
ultrasound (sonogram)	128
women's imaging	1646
X-rays	1518

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Karen S. Johnson, MD, MS.

**Ethnicity**
Non-Hispanic White	833
Black	301
Hispanic	0
Asian	16
Other	0
Native American	0

**Age**
From 65 to 74	693
From 75 to 84	296
85 and over	41
Less than 65	137

Conditions of Medicare patients treated by Dr. Karen S. Johnson, MD, MS in 2013

Hypertension	57
High Cholesterol	46
Stroke	2
Ischemic Heart Disease	15
Depression	16
Chronic Kidney Disease	11
Asthma	6
Osteoperosis	11
Atrial Fibrilation	6
Heart Failure	6
Chronic Obstructive Pulmonary Disease	7
Diabetes	24
Dementia	2
Cancer	28

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Karen S. Johnson, MD, MS treated as a diagnostic radiologist in Durham, NC during 2014 were breast procedures, women's imaging, X-rays and preventive care.

Volume of procedures performed by Dr. Karen S. Johnson, MD, MS for Medicare patients.

breast procedures	1285
diagnostic imaging	392
diagnostic procedures	16
image guided procedures	16
minimally invasive procedures	16
minor procedures	16
preventive care	738
ultrasound (sonogram)	139
women's imaging	1269
X-rays	1130

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Karen S. Johnson, MD, MS.

**Ethnicity**
Non-Hispanic White	822
Black	267
Hispanic	17
Asian	17
Other	0
Native American	0

**Age**
From 65 to 74	701
From 75 to 84	259
85 and over	44
Less than 65	136

Conditions of Medicare patients treated by Dr. Karen S. Johnson, MD, MS in 2014

Hypertension	54
High Cholesterol	42
Stroke	2
Ischemic Heart Disease	13
Depression	17
Chronic Kidney Disease	11
Asthma	6
Osteoperosis	8
Atrial Fibrilation	5
Heart Failure	7
Chronic Obstructive Pulmonary Disease	5
Diabetes	24
Dementia	3
Cancer	28

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Karen S. Johnson, MD, MS treated as a diagnostic radiologist in Durham, NC during 2015 were breast procedures, women's imaging, X-rays and preventive care.

Volume of procedures performed by Dr. Karen S. Johnson, MD, MS for Medicare patients.

breast procedures	1290
diagnostic imaging	367
diagnostic procedures	12
image guided procedures	12
minimally invasive procedures	12
minor procedures	12
preventive care	567
ultrasound (sonogram)	344
women's imaging	1278
X-rays	934

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Karen S. Johnson, MD, MS.

**Ethnicity**
Non-Hispanic White	1388
Black	442
Hispanic	32
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	1086
From 75 to 84	480
85 and over	76
Less than 65	260

Conditions of Medicare patients treated by Dr. Karen S. Johnson, MD, MS in 2015

Hypertension	54
High Cholesterol	42
Stroke	3
Ischemic Heart Disease	15
Depression	20
Chronic Kidney Disease	12
Asthma	7
Osteoperosis	10
Atrial Fibrilation	6
Heart Failure	8
Chronic Obstructive Pulmonary Disease	6
Diabetes	22
Dementia	3
Cancer	28

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Karen S. Johnson, MD, MS treated as a diagnostic radiologist in Durham, NC during 2016 were breast procedures, women's imaging, X-rays and preventive care.

Volume of procedures performed by Dr. Karen S. Johnson, MD, MS for Medicare patients.

breast procedures	927
diagnostic imaging	282
preventive care	449
ultrasound (sonogram)	196
women's imaging	927
X-rays	731

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Karen S. Johnson, MD, MS.

**Ethnicity**
Non-Hispanic White	542
Black	175
Hispanic	0
Asian	12
Other	13
Native American	0

**Age**
From 65 to 74	477
From 75 to 84	159
85 and over	19
Less than 65	98

Conditions of Medicare patients treated by Dr. Karen S. Johnson, MD, MS in 2016

Hypertension	52
High Cholesterol	38
Stroke	0
Ischemic Heart Disease	13
Depression	22
Chronic Kidney Disease	16
Asthma	11
Osteoperosis	11
Atrial Fibrilation	6
Heart Failure	8
Chronic Obstructive Pulmonary Disease	6
Diabetes	24
Dementia	3
Cancer	34

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Karen S. Johnson, MD, MS treated as a diagnostic radiologist in Durham, NC during 2017 were breast procedures, women's imaging, X-rays and preventive care.

Volume of procedures performed by Dr. Karen S. Johnson, MD, MS for Medicare patients.

breast procedures	931
diagnostic imaging	257
preventive care	446
ultrasound (sonogram)	228
women's imaging	931
X-rays	703

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Karen S. Johnson, MD, MS.

**Ethnicity**
Non-Hispanic White	563
Black	155
Hispanic	0
Asian	16
Other	0
Native American	0

**Age**
From 65 to 74	466
From 75 to 84	173
85 and over	28
Less than 65	90

Conditions of Medicare patients treated by Dr. Karen S. Johnson, MD, MS in 2017

Hypertension	55
High Cholesterol	35
Stroke	2
Ischemic Heart Disease	15
Depression	22
Chronic Kidney Disease	17
Asthma	7
Osteoperosis	10
Atrial Fibrilation	6
Heart Failure	8
Chronic Obstructive Pulmonary Disease	7
Diabetes	23
Dementia	4
Cancer	31

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Karen S. Johnson, MD, MS treated as a diagnostic radiologist in Durham, NC during 2018 were breast procedures, women's imaging, X-rays and preventive care.

Volume of procedures performed by Dr. Karen S. Johnson, MD, MS for Medicare patients.

breast procedures	1015
diagnostic imaging	255
diagnostic procedures	28
image guided procedures	28
minimally invasive procedures	28
minor procedures	28
preventive care	498
ultrasound (sonogram)	234
women's imaging	987
X-rays	753

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Karen S. Johnson, MD, MS.

**Ethnicity**
Non-Hispanic White	595
Black	155
Hispanic	0
Asian	19
Other	0
Native American	0

**Age**
From 65 to 74	509
From 75 to 84	176
85 and over	31
Less than 65	77

Conditions of Medicare patients treated by Dr. Karen S. Johnson, MD, MS in 2018

Hypertension	54
High Cholesterol	42
Stroke	2
Ischemic Heart Disease	15
Depression	22
Chronic Kidney Disease	18
Asthma	6
Osteoperosis	8
Atrial Fibrilation	5
Heart Failure	8
Chronic Obstructive Pulmonary Disease	6
Diabetes	22
Dementia	3
Cancer	30

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Karen S. Johnson, MD, MS treated as a diagnostic radiologist in Durham, NC during 2019 were breast procedures, women's imaging, X-rays and preventive care.

Volume of procedures performed by Dr. Karen S. Johnson, MD, MS for Medicare patients.

breast procedures	962
diagnostic imaging	247
diagnostic procedures	13
image guided procedures	13
minimally invasive procedures	13
minor procedures	13
preventive care	472
ultrasound (sonogram)	230
women's imaging	949
X-rays	719

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Karen S. Johnson, MD, MS.

**Ethnicity**
Non-Hispanic White	551
Black	150
Hispanic	0
Asian	0
Other	25
Native American	0

**Age**
From 65 to 74	478
From 75 to 84	193
85 and over	16
Less than 65	58

Conditions of Medicare patients treated by Dr. Karen S. Johnson, MD, MS in 2019

Hypertension	49
High Cholesterol	43
Stroke	3
Ischemic Heart Disease	16
Depression	25
Chronic Kidney Disease	18
Asthma	6
Osteoperosis	12
Atrial Fibrilation	6
Heart Failure	8
Chronic Obstructive Pulmonary Disease	6
Diabetes	21
Dementia	3
Cancer	30

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Karen S. Johnson, MD, MS treated as a diagnostic radiologist in Durham, NC during 2020 were breast procedures, women's imaging, X-rays and preventive care.

Volume of procedures performed by Dr. Karen S. Johnson, MD, MS for Medicare patients.

breast procedures	893
diagnostic imaging	243
diagnostic procedures	11
image guided procedures	11
minimally invasive procedures	11
minor procedures	11
preventive care	433
ultrasound (sonogram)	206
women's imaging	882
X-rays	676

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Karen S. Johnson, MD, MS.

**Ethnicity**
Non-Hispanic White	523
Black	142
Hispanic	0
Asian	0
Other	16
Native American	0

**Age**
From 65 to 74	436
From 75 to 84	186
85 and over	21
Less than 65	54

Conditions of Medicare patients treated by Dr. Karen S. Johnson, MD, MS in 2020

Hypertension	52
High Cholesterol	43
Stroke	2
Ischemic Heart Disease	15
Depression	24
Chronic Kidney Disease	16
Asthma	5
Osteoperosis	13
Atrial Fibrilation	7
Heart Failure	6
Chronic Obstructive Pulmonary Disease	4
Diabetes	21
Dementia	4
Cancer	30

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Karen S. Johnson, MD, MS treated as a diagnostic radiologist in Durham, NC during 2021 were breast procedures, women's imaging, X-rays and preventive care.

Volume of procedures performed by Dr. Karen S. Johnson, MD, MS for Medicare patients.

breast procedures	926
diagnostic imaging	208
diagnostic procedures	30
image guided procedures	42
minimally invasive procedures	42
minor procedures	30
preventive care	466
ultrasound (sonogram)	210
women's imaging	884
X-rays	674

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Karen S. Johnson, MD, MS.

**Ethnicity**
Non-Hispanic White	523
Black	154
Hispanic	0
Asian	0
Other	21
Native American	0

**Age**
From 65 to 74	434
From 75 to 84	205
85 and over	21
Less than 65	56

Conditions of Medicare patients treated by Dr. Karen S. Johnson, MD, MS in 2021

Hypertension	54
High Cholesterol	47
Stroke	2
Ischemic Heart Disease	14
Depression	23
Chronic Kidney Disease	16
Asthma	7
Osteoperosis	14
Atrial Fibrilation	4
Heart Failure	7
Chronic Obstructive Pulmonary Disease	4
Diabetes	20
Dementia	3
Cancer	27

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Karen S. Johnson, MD, MS treated as a diagnostic radiologist in Durham, NC during 2022 were breast procedures, women's imaging, X-rays and preventive care.

Volume of procedures performed by Dr. Karen S. Johnson, MD, MS for Medicare patients.

breast procedures	944
diagnostic imaging	211
diagnostic procedures	26
image guided procedures	26
minimally invasive procedures	26
minor procedures	26
preventive care	495
ultrasound (sonogram)	212
women's imaging	918
X-rays	706

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Karen S. Johnson, MD, MS.

**Ethnicity**
Non-Hispanic White	549
Black	121
Hispanic	12
Asian	23
Other	19
Native American	0

**Age**
From 65 to 74	445
From 75 to 84	226
85 and over	22
Less than 65	31

Conditions of Medicare patients treated by Dr. Karen S. Johnson, MD, MS in 2022

Hypertension	61
High Cholesterol	65
Stroke	3
Ischemic Heart Disease	10
Depression	16
Chronic Kidney Disease	12
Asthma	12
Osteoperosis	21
Atrial Fibrilation	9
Heart Failure	7
Chronic Obstructive Pulmonary Disease	8
Diabetes	17
Dementia	2
Cancer	32

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

The top procedures that Dr. Karen S. Johnson, MD, MS treated as a diagnostic radiologist in Durham, NC during 2023 were breast procedures, women's imaging, X-rays and preventive care.

Volume of procedures performed by Dr. Karen S. Johnson, MD, MS for Medicare patients.

breast procedures	744
diagnostic imaging	188
diagnostic procedures	13
image guided procedures	13
minimally invasive procedures	13
minor procedures	13
preventive care	387
ultrasound (sonogram)	156
women's imaging	731
X-rays	575

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. Karen S. Johnson, MD, MS.

**Ethnicity**
Non-Hispanic White	453
Black	99
Hispanic	0
Asian	0
Other	20
Native American	0

**Age**
From 65 to 74	354
From 75 to 84	198
85 and over	17
Less than 65	28

Conditions of Medicare patients treated by Dr. Karen S. Johnson, MD, MS in 2023

Hypertension	66
High Cholesterol	67
Stroke	3
Ischemic Heart Disease	12
Depression	20
Chronic Kidney Disease	18
Asthma	11
Osteoperosis	23
Atrial Fibrilation	8
Heart Failure	9
Chronic Obstructive Pulmonary Disease	6
Diabetes	21
Dementia	2
Cancer	36

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2023

Volume of procedures performed by Dr. Karen S. Johnson, MD, MS for Medicare patients.

The highest averages for the top procedures that Dr. Karen S. Johnson, MD, MS treated as a diagnostic radiologist in Durham, NC were breast procedures, women's imaging, X-rays and preventive care.

breast procedures	1061
diagnostic imaging	281
diagnostic procedures	23
excision	22
image guided procedures	26
minimally invasive procedures	26
minor procedures	23
open surgery	22
preventive care	557
ultrasound (sonogram)	200
women's imaging	1039
X-rays	839

Average Medicare Patient Data From 2012 - 2023

Information about Medicare patients treated by Dr. Karen S. Johnson, MD, MS.

**Ethnicity**
Black / African American	180
Asian / Pacific Islander	8
Non-Hispanic White	611
Hispanic	5
Native American / Alaskan Native	0
Other	9

**Age**
75 to 84	212
85 and over	28
Less than 65	85
65 to 74	506

Average of Total of Conditions of Medicare patients treated by Dr. Karen S. Johnson, MD, MS From 2012 - 2023

The highest averages of the most common conditions of Medicare patients that Dr. Karen S. Johnson, MD, MS treated were hypertension, high cholesterol, cancer and diabetes.

Hypertension	50
High Cholesterol	42
Stroke	2
Ischemic Heart Disease	12
Depression	18
Chronic Kidney Disease	13
Asthma	7
Osteoporosis	11
Heart Failure	6
Chronic Obstructive Pulmonary Disease	5
Diabetes	19
Atrial Fibrillation	5
Cancer	27
Dementia	2

Education & Training

Dr. Karen S. Johnson, MD, MS graduated from Loyola University Chicago, Stritch School of Medicine in 2001. She completed residency at George Washington University Medical Center. She is certified by the American Board of Radiology, Diagnostic Radiology and has a state license in North Carolina.

Medical School: Loyola University Chicago, Stritch School of Medicine (2001)

Residency: George Washington University Medical Center (2006)

Board Certification: American Board of Radiology, Diagnostic Radiology

Licensed In: North Carolina

Affiliations & Hospitals

Dr. Karen S. Johnson, MD, MS is associated with these hospitals and organizations:

Duke 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. Karen S. Johnson, MD, MS appears to accept the following insurance providers: MedCost, Aetna Traditional Choice, Aetna Medicare PPO, BlueCross BlueShield of North Carolina, CIGNA Open Access Plus, WellCare, AmeriHealth, Medicare Part B, Medicare Advantage, AARP, CIGNA Open Access, United Healthcare PPO, United Healthcare POS, United Healthcare HMO, Aetna, Aetna Workers' Compensation, TRICARE Prime, Aetna Open Choice PPO, United Healthcare, TRICARE Prime Remote, Medicare, Medicaid, Humana, Cigna, TRICARE, Harvard Pilgrim Health Care, Aetna Managed Choice POS, Aetna HMO, Gateway Health Alliance, *Duke HomeCare and Hospice does not participate in the plan., Alliance Health (*Beginning January 2026), Duke Employee Plans, Blue Options (123, PPO, HSA), *Duke HomeCare and Hospice and mental health providers do not participate with the plan., Aetna Quality Point of Service (QPOS), Aetna Choice POS, Aetna Choice POS II, Duke Advantage (*Beginning January 2026), Aetna Medicare Value Plan (HMO), Blue Advantage (*Available in select counties only), Duke Basic, Duke Options (*Beginning January 2026), Duke USA (*Beginning January 2026), Ambetter, Experience Health, Aetna Select HMO, Aetna PCP Coordinated POS Plan, Blue Select, Blue Medicare (HMO, PPO)*, Healthy Blue, Aetna Limited Benefit Insurance PPO, Vaya Health (*Beginning January 2026), Trillium (*Beginning January 2026), All Savers Fully Insured, Aetna Health Network Only, Aetna Health Network Option, Blue Value (*Duke Health Lake Norman and Kernodle Clinics only), Carolina Complete Health, First Medicare Direct, Healthgram, All Savers Alternate Funding, Aetna Medicare Assure Plan (HMO D-SNP), Aetna/CVS Health, Aetna Elect Choice HMO, Aetna Open Access Elect Choice, Partners (*Beginning January 2026), Aetna Voluntary Indemnity Group Plan, Duke Select, Aetna Open Access HMO, Open Access Aetna Select, Aetna Open Access Managed Choice, NC State Employees Health Plan, Ambetter of North Carolina and United Medical Resources (UMR).

Insurance Accepted by Provider includes:

According to our sources, Dr. Karen S. Johnson, MD, MS accepts the following insurance providers:

MedCost

Aetna Traditional Choice

Aetna Medicare PPO

BlueCross BlueShield of North Carolina

CIGNA Open Access Plus

WellCare

AmeriHealth

Medicare Part B

Medicare Advantage

AARP

CIGNA Open Access

United Healthcare PPO

United Healthcare POS

United Healthcare HMO

Aetna

Aetna Workers' Compensation

TRICARE Prime

Aetna Open Choice PPO

United Healthcare

TRICARE Prime Remote

Medicare

Medicaid

Humana

Cigna

TRICARE

Harvard Pilgrim Health Care

Aetna Managed Choice POS

Aetna HMO

Gateway Health Alliance

*Duke HomeCare and Hospice does not participate in the plan.

Alliance Health (*Beginning January 2026)

Duke Employee Plans

Blue Options (123, PPO, HSA)

*Duke HomeCare and Hospice and mental health providers do not participate with the plan.

Aetna Quality Point of Service (QPOS)

Aetna Choice POS, Aetna Choice POS II

Duke Advantage (*Beginning January 2026)

Aetna Medicare Value Plan (HMO)

Blue Advantage (*Available in select counties only)

Duke Basic

Duke Options (*Beginning January 2026)

Duke USA (*Beginning January 2026)

Ambetter

Experience Health

Aetna Select HMO

Aetna PCP Coordinated POS Plan

Blue Select

Blue Medicare (HMO, PPO)*

Healthy Blue

Aetna Limited Benefit Insurance PPO

Vaya Health (*Beginning January 2026)

Trillium (*Beginning January 2026)

All Savers Fully Insured

Aetna Health Network Only, Aetna Health Network Option

Blue Value (*Duke Health Lake Norman and Kernodle Clinics only)

Carolina Complete Health

First Medicare Direct

Healthgram

All Savers Alternate Funding

Aetna Medicare Assure Plan (HMO D-SNP)

Aetna/CVS Health

Aetna Elect Choice HMO, Aetna Open Access Elect Choice

Partners (*Beginning January 2026)

Aetna Voluntary Indemnity Group Plan

Duke Select

Aetna Open Access HMO, Open Access Aetna Select, Aetna Open Access Managed Choice

NC State Employees Health Plan

Ambetter of North Carolina

United Medical Resources (UMR)

Ratings & Reviews

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General Payments

These charts describe general payments received by Dr. Karen S. Johnson, MD, MS. Doctors may receive payments for a number of reasons, including meal compensation, travel compensation, and consulting.

**Payments by Company**
Allergan Inc.	$13 LINZESS $13

**Types of Payments**
Food and Beverage	$13

Biography

Dr. Karen Johnson is a diagnostic radiology specialist. Her clinical interests encompass breast imaging. She appears to be in-network for Blue California, CIGNA Plans, and TRICARE, in addition to other insurance carriers. Dr. Johnson studied medicine at Loyola University Chicago, Stritch School of Medicine. For her professional training, Dr. Johnson completed a residency program at George Washington University Medical Center. She is affiliated with Duke Health.