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Dr. Karl William Thomas, MD

Specializes in: Adult Pulmonology and Adult Critical Care
Johns Hopkins University School of Medicine (1995)
3480 Wake Forest Road
Raleigh, NC 27609

Dr. Karl William Thomas, MD is a pulmonologist in Cary, NC specializing in adult pulmonology and adult critical care. He graduated from Johns Hopkins University School of Medicine in 1995 and has 31 years of experience. Dr. Karl William Thomas, MD is affiliated with Duke Health.

View Doctor's Full Profile (919) 862-5520

Office Locations

Duke Health

100 Duke Health Cary Place
Cary, NC 27519
(919) 385-1101
(919) 385-9119
open_in_new

Duke Health

3480 Wake Forest Road
Raleigh, NC 27609
(919) 862-5520
(919) 862-5521
open_in_new
Medical Center Boulevard
Winston-Salem, NC 27157
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Noteworthy Medicare Patient Procedures Performed by Dr. Karl William Thomas, MD in 2023

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

Top 5%

By Volume:

pulmonary function test

In 2023, Dr. Karl William Thomas, MD performed more pulmonary function test (PFT) procedures for Medicare patients than 95% of providers in related specialties within North Carolina.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Karl William Thomas, MD treated as a pulmonologist in Cary, NC during 2012 were bronchoscopy, minimally invasive procedures, diagnostic procedures and minor procedures.

Volume of procedures performed by Dr. Karl William Thomas, MD for Medicare patients.

aspiration 20
bronchoscopy 50
diagnostic procedures 32
minimally invasive procedures 32
minor procedures 20

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Karl William Thomas, MD treated as a pulmonologist in Cary, NC during 2013 were hospital care, inpatient care, bronchoscopy and minimally invasive procedures.

Volume of procedures performed by Dr. Karl William Thomas, MD for Medicare patients.

aspiration 18
bronchoscopy 71
diagnostic procedures 48
hospital care 98
inpatient care 98
minimally invasive procedures 48
minor procedures 18

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Karl William Thomas, MD.

Gender
Male 105
Female 69
Age
From 65 to 74 72
From 75 to 84 43
85 and over 12
Less than 65 47

Conditions of Medicare patients treated by Dr. Karl William Thomas, MD in 2013

Hypertension 72
High Cholesterol 49
Stroke 0
Ischemic Heart Disease 45
Depression 32
Chronic Kidney Disease 57
Asthma 10
Osteoperosis 8
Atrial Fibrilation 17
Heart Failure 37
Chronic Obstructive Pulmonary Disease 39
Diabetes 42
Dementia 6
Cancer 21

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Karl William Thomas, MD treated as a pulmonologist in Cary, NC during 2014 were bronchoscopy, minor procedures, minimally invasive procedures and aspiration.

Volume of procedures performed by Dr. Karl William Thomas, MD for Medicare patients.

aspiration 20
bronchoscopy 36
diagnostic procedures 20
doctor visit 17
hospital care 13
inpatient care 13
minimally invasive procedures 20
minor procedures 20

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Karl William Thomas, MD.

Gender
Male 60
Female 66
Age
From 65 to 74 53
From 75 to 84 0
85 and over 0
Less than 65 37

Conditions of Medicare patients treated by Dr. Karl William Thomas, MD in 2014

Hypertension 71
High Cholesterol 55
Stroke 0
Ischemic Heart Disease 42
Depression 26
Chronic Kidney Disease 51
Asthma 17
Osteoperosis 9
Atrial Fibrilation 17
Heart Failure 33
Chronic Obstructive Pulmonary Disease 43
Diabetes 42
Dementia 0
Cancer 31

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Karl William Thomas, MD treated as a pulmonologist in Cary, NC during 2015 were hospital care, inpatient care, bronchoscopy and ablation.

Volume of procedures performed by Dr. Karl William Thomas, MD for Medicare patients.

ablation 18
bronchoscopy 30
doctor visit 35
hospital care 185
inpatient care 185

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Karl William Thomas, MD.

Gender
Male 222
Female 190
Ethnicity
Non-Hispanic White 372
Black 0
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 176
From 75 to 84 80
85 and over 24
Less than 65 132

Conditions of Medicare patients treated by Dr. Karl William Thomas, MD in 2015

Hypertension 75
High Cholesterol 49
Stroke 12
Ischemic Heart Disease 44
Depression 36
Chronic Kidney Disease 61
Asthma 33
Osteoperosis 9
Atrial Fibrilation 20
Heart Failure 47
Chronic Obstructive Pulmonary Disease 46
Diabetes 36
Dementia 11
Cancer 24

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Karl William Thomas, MD treated as a pulmonologist in Cary, NC during 2016 were hospital care, inpatient care and pulmonary testing.

Volume of procedures performed by Dr. Karl William Thomas, MD for Medicare patients.

hospital care 177
inpatient care 177
pulmonary testing 30

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Karl William Thomas, MD.

Gender
Male 111
Female 116
Ethnicity
Non-Hispanic White 187
Black 0
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 100
From 75 to 84 47
85 and over 16
Less than 65 64

Conditions of Medicare patients treated by Dr. Karl William Thomas, MD in 2016

Hypertension 75
High Cholesterol 57
Stroke 12
Ischemic Heart Disease 54
Depression 38
Chronic Kidney Disease 67
Asthma 49
Osteoperosis 9
Atrial Fibrilation 24
Heart Failure 50
Chronic Obstructive Pulmonary Disease 47
Diabetes 47
Dementia 15
Cancer 21

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Karl William Thomas, MD treated as a pulmonologist in Cary, NC during 2017 were hospital care, inpatient care and pulmonary testing.

Volume of procedures performed by Dr. Karl William Thomas, MD for Medicare patients.

doctor visit 17
hospital care 192
inpatient care 192
pulmonary testing 83

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Karl William Thomas, MD.

Gender
Male 159
Female 140
Ethnicity
Non-Hispanic White 235
Black 50
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 127
From 75 to 84 73
85 and over 19
Less than 65 80

Conditions of Medicare patients treated by Dr. Karl William Thomas, MD in 2017

Hypertension 75
High Cholesterol 63
Stroke 8
Ischemic Heart Disease 55
Depression 42
Chronic Kidney Disease 61
Asthma 24
Osteoperosis 7
Atrial Fibrilation 20
Heart Failure 52
Chronic Obstructive Pulmonary Disease 56
Diabetes 42
Dementia 17
Cancer 24

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Karl William Thomas, MD treated as a pulmonologist in Cary, NC during 2018 were hospital care, inpatient care, pulmonary testing and bronchoscopy.

Volume of procedures performed by Dr. Karl William Thomas, MD for Medicare patients.

bronchoscopy 22
doctor visit 23
hospital care 181
inpatient care 181
pulmonary testing 96

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Karl William Thomas, MD.

Gender
Male 163
Female 113
Ethnicity
Non-Hispanic White 214
Black 51
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 121
From 75 to 84 66
85 and over 19
Less than 65 70

Conditions of Medicare patients treated by Dr. Karl William Thomas, MD in 2018

Hypertension 75
High Cholesterol 71
Stroke 9
Ischemic Heart Disease 55
Depression 37
Chronic Kidney Disease 61
Asthma 11
Osteoperosis 7
Atrial Fibrilation 20
Heart Failure 45
Chronic Obstructive Pulmonary Disease 56
Diabetes 43
Dementia 17
Cancer 29

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Karl William Thomas, MD treated as a pulmonologist in Cary, NC during 2019 were hospital care, inpatient care, pulmonary testing and bronchoscopy.

Volume of procedures performed by Dr. Karl William Thomas, MD for Medicare patients.

bronchoscopy 46
diagnostic procedures 16
doctor visit 64
hospital care 85
inpatient care 85
minimally invasive procedures 29
pulmonary testing 51

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Karl William Thomas, MD.

Gender
Male 136
Female 104
Ethnicity
Non-Hispanic White 199
Black 0
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 94
From 75 to 84 77
85 and over 18
Less than 65 51

Conditions of Medicare patients treated by Dr. Karl William Thomas, MD in 2019

Hypertension 75
High Cholesterol 63
Stroke 10
Ischemic Heart Disease 55
Depression 42
Chronic Kidney Disease 57
Asthma 10
Osteoperosis 8
Atrial Fibrilation 23
Heart Failure 53
Chronic Obstructive Pulmonary Disease 58
Diabetes 40
Dementia 19
Cancer 33

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Karl William Thomas, MD treated as a pulmonologist in Cary, NC during 2020 were hospital care, inpatient care, bronchoscopy and pulmonary testing.

Volume of procedures performed by Dr. Karl William Thomas, MD for Medicare patients.

bronchoscopy 44
diagnostic procedures 13
doctor visit 68
hospital care 97
inpatient care 97
minimally invasive procedures 25
pulmonary testing 41

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Karl William Thomas, MD.

Gender
Male 149
Female 115
Ethnicity
Non-Hispanic White 209
Black 43
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 102
From 75 to 84 82
85 and over 25
Less than 65 55

Conditions of Medicare patients treated by Dr. Karl William Thomas, MD in 2020

Hypertension 75
High Cholesterol 63
Stroke 8
Ischemic Heart Disease 51
Depression 37
Chronic Kidney Disease 55
Asthma 11
Osteoperosis 9
Atrial Fibrilation 18
Heart Failure 44
Chronic Obstructive Pulmonary Disease 48
Diabetes 44
Dementia 17
Cancer 31

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Karl William Thomas, MD treated as a pulmonologist in Cary, NC during 2021 were pulmonary testing, hospital care, inpatient care and bronchoscopy.

Volume of procedures performed by Dr. Karl William Thomas, MD for Medicare patients.

bronchoscopy 16
doctor visit 86
hospital care 74
inpatient care 74
pulmonary testing 111

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Karl William Thomas, MD.

Gender
Male 137
Female 121
Ethnicity
Non-Hispanic White 211
Black 33
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 110
From 75 to 84 69
85 and over 22
Less than 65 57

Conditions of Medicare patients treated by Dr. Karl William Thomas, MD in 2021

Hypertension 75
High Cholesterol 60
Stroke 7
Ischemic Heart Disease 53
Depression 36
Chronic Kidney Disease 56
Asthma 13
Osteoperosis 11
Atrial Fibrilation 21
Heart Failure 48
Chronic Obstructive Pulmonary Disease 50
Diabetes 40
Dementia 14
Cancer 27

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Karl William Thomas, MD treated as a pulmonologist in Cary, NC during 2022 were pulmonary testing, hospital care, inpatient care and bronchoscopy.

Volume of procedures performed by Dr. Karl William Thomas, MD for Medicare patients.

bronchoscopy 15
doctor visit 29
hospital care 69
inpatient care 69
pulmonary testing 164

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Karl William Thomas, MD.

Gender
Male 125
Female 138
Ethnicity
Non-Hispanic White 221
Black 25
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 110
From 75 to 84 92
85 and over 30
Less than 65 31

Conditions of Medicare patients treated by Dr. Karl William Thomas, MD in 2022

Hypertension 75
High Cholesterol 70
Stroke 14
Ischemic Heart Disease 44
Depression 27
Chronic Kidney Disease 38
Asthma 14
Osteoperosis 16
Atrial Fibrilation 35
Heart Failure 39
Chronic Obstructive Pulmonary Disease 52
Diabetes 35
Dementia 11
Cancer 29

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Karl William Thomas, MD for Medicare patients.

The highest averages for the top procedures that Dr. Karl William Thomas, MD treated as a pulmonologist in Cary, NC were hospital care, inpatient care, pulmonary testing and bronchoscopy.

ablation 18
aspiration 19
bronchoscopy 36
diagnostic procedures 25
doctor visit 42
hospital care 117
inpatient care 117
minimally invasive procedures 30
minor procedures 19
pulmonary testing 82

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Karl William Thomas, MD.

Gender
Male 124
Female 106
Ethnicity
Black / African American 18
Asian / Pacific Islander 0
Non-Hispanic White 168
Hispanic 0
Native American / Alaskan Native 0
Other 0
Age
75 to 84 57
85 and over 16
Less than 65 56
65 to 74 96

Average of Total of Conditions of Medicare patients treated by Dr. Karl William Thomas, MD From 2012 - 2022

The highest averages of the most common conditions of Medicare patients that Dr. Karl William Thomas, MD treated were hypertension, high cholesterol, chronic kidney disease and chronic obstructive pulmonary disease.

Hypertension 67
High Cholesterol 54
Stroke 7
Ischemic Heart Disease 45
Depression 32
Chronic Kidney Disease 51
Asthma 17
Osteoporosis 8
Heart Failure 40
Chronic Obstructive Pulmonary Disease 45
Diabetes 37
Atrial Fibrillation 19
Cancer 24
Dementia 11

Education & Training

Dr. Karl William Thomas, MD graduated from Johns Hopkins University School of Medicine in 1995. He completed residency at Stanford Hospital & Clinics. He is certified by the American Board of Internal Med, Critical Care Medicine and has a state license in Iowa.

Medical School: Johns Hopkins University School of Medicine (1995)

Residency: Stanford Hospital & Clinics (1998)

Board Certification: American Board of Internal Med, Critical Care Medicine

Licensed In: Iowa

Affiliations & Hospitals

Dr. Karl William Thomas, MD 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. Karl William Thomas, MD 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, TRICARE Prime Remote, United Healthcare, 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 Choice POS, Aetna Choice POS II, Aetna Quality Point of Service (QPOS), Duke Advantage (*Beginning January 2026), Blue Advantage (*Available in select counties only), Aetna Medicare Value Plan (HMO), Duke Basic, Duke Options (*Beginning January 2026), Duke USA (*Beginning January 2026), Experience Health, Ambetter, Aetna Select HMO, Aetna PCP Coordinated POS Plan, Blue Select, Blue Medicare (HMO, PPO)*, Healthy Blue, Vaya Health (*Beginning January 2026), Aetna Limited Benefit Insurance PPO, Trillium (*Beginning January 2026), Aetna Health Network Only, Aetna Health Network Option, All Savers Fully Insured, 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. Karl William Thomas, MD 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
TRICARE Prime Remote
United Healthcare
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 Choice POS, Aetna Choice POS II
Aetna Quality Point of Service (QPOS)
Duke Advantage (*Beginning January 2026)
Blue Advantage (*Available in select counties only)
Aetna Medicare Value Plan (HMO)
Duke Basic
Duke Options (*Beginning January 2026)
Duke USA (*Beginning January 2026)
Experience Health
Ambetter
Aetna Select HMO
Aetna PCP Coordinated POS Plan
Blue Select
Blue Medicare (HMO, PPO)*
Healthy Blue
Vaya Health (*Beginning January 2026)
Aetna Limited Benefit Insurance PPO
Trillium (*Beginning January 2026)
Aetna Health Network Only, Aetna Health Network Option
All Savers Fully Insured
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

Dr. Karl William Thomas, MD has an exceptional overall rating with an average of 4.96 out of 5 stars based on 188 ratings. We collect ratings and reviews of Dr. Karl William Thomas, MD from all over the web to help you find the right in Cary, NC. 

4.96
Overall Rating
Leave a Review

General Payments

These charts describe general payments received by Dr. Karl William Thomas, MD. Doctors may receive payments for a number of reasons, including meal compensation, travel compensation, and consulting.

Payments by Company
Intuitive Surgical, Inc. $5,436 Da Vinci Surgical System
$5,436
Pulmonx Corporation $142 Pulmonx Endobronchial Valve EBV
$142
Types of Payments
Education $3,000
Travel and Lodging $2,097
Food and Beverage $481

Research Payments

Dr. Karl William Thomas, MD has received 2 research payments totaling $1,197.

Biography

Dr. Karl Thomas is a specialist in adult critical care and adult pulmonology. Patients gave Dr. Thomas an average rating of 5.0 stars (out of 5). He is professionally affiliated with Duke Health. He can accept Blue California, CIGNA Plans, and TRICARE, as well as other insurance carriers. He is a graduate of Johns Hopkins University School of Medicine and Stanford University School of Medicine and a graduate of Stanford Hospital & Clinics' residency program.

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