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Dr. Nicholas John Karis, MD, FACS

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Specializes in: Thoracic Surgery

Rosalind Franklin University of Medicine and Science, Chicago Medical School

2535 W. Belvedere Avenue Suite 46
Baltimore, MD 21215

(410) 601-6491

Dr. Nicholas John Karis, MD, FACS is a thoracic surgeon in Baltimore, MD specializing in thoracic surgery. He graduated from Rosalind Franklin University of Medicine and Science, Chicago Medical School. Dr. Nicholas John Karis, MD, FACS is affiliated with GBMC Healthcare.

Office Locations

2535 W. Belvedere Avenue Suite 46
Baltimore, MD 21215

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In The News

“Under the leadership of Dr. Nicholas Karis, Division Chief of Thoracic Surgery, we've expanded our lung screening services, connecting patients with a team dedicated to education, early detection,...”—"LifeBridge Health's lung screenings: Early detection, better outcomes and smoking cessation support", CBS News, January 2025

Noteworthy Medicare Patient Procedures Performed by Dr. Nicholas John Karis, MD, FACS in 2023

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

Top 25%

By Affordability:

lymph node excision

In 2012, Dr. Nicholas John Karis, MD, FACS had a list price for lymph node excision that was lower than the list prices billed to Medicare by 75% of providers in related specialties within Maryland. 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.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Nicholas John Karis, MD, FACS treated as a thoracic surgeon in Baltimore, MD during 2012 were bronchoscopy and minimally invasive procedures.

Volume of procedures performed by Dr. Nicholas John Karis, MD, FACS for Medicare patients.

bronchoscopy	18
minimally invasive procedures	18

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Nicholas John Karis, MD, FACS treated as a thoracic surgeon in Baltimore, MD during 2013 were bronchoscopy and minimally invasive procedures.

Volume of procedures performed by Dr. Nicholas John Karis, MD, FACS for Medicare patients.

bronchoscopy	20
doctor visit	25
minimally invasive procedures	20

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Nicholas John Karis, MD, FACS.

**Gender**
Male	26
Female	30

**Ethnicity**
Non-Hispanic White	41
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	24
From 75 to 84	13
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Nicholas John Karis, MD, FACS in 2013

Hypertension	75
High Cholesterol	68
Stroke	0
Ischemic Heart Disease	54
Depression	46
Chronic Kidney Disease	34
Asthma	0
Osteoperosis	0
Atrial Fibrilation	30
Heart Failure	36
Chronic Obstructive Pulmonary Disease	32
Diabetes	43
Dementia	0
Cancer	46

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Nicholas John Karis, MD, FACS treated as a thoracic surgeon in Baltimore, MD during 2014 were minimally invasive procedures, bronchoscopy, thoracic (chest) surgery procedures and dissection.

Volume of procedures performed by Dr. Nicholas John Karis, MD, FACS for Medicare patients.

bronchoscopy	33
dissection	13
doctor visit	26
excision	13
lobectomy	11
lymph node procedures	13
minimally invasive procedures	57
thoracic (chest) surgery procedures	24

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Nicholas John Karis, MD, FACS.

**Gender**
Male	39
Female	21

**Ethnicity**
Non-Hispanic White	45
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	0
From 75 to 84	20
85 and over	0
Less than 65	19

Conditions of Medicare patients treated by Dr. Nicholas John Karis, MD, FACS in 2014

Hypertension	75
High Cholesterol	65
Stroke	0
Ischemic Heart Disease	57
Depression	45
Chronic Kidney Disease	50
Asthma	0
Osteoperosis	0
Atrial Fibrilation	32
Heart Failure	50
Chronic Obstructive Pulmonary Disease	60
Diabetes	35
Dementia	0
Cancer	50

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Nicholas John Karis, MD, FACS treated as a thoracic surgeon in Baltimore, MD during 2015 were bronchoscopy, minimally invasive procedures, hospital care and inpatient care.

Volume of procedures performed by Dr. Nicholas John Karis, MD, FACS for Medicare patients.

bronchoscopy	39
doctor visit	37
hospital care	15
inpatient care	15
minimally invasive procedures	39

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Nicholas John Karis, MD, FACS.

**Gender**
Male	76
Female	68

**Ethnicity**
Non-Hispanic White	114
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	60
From 75 to 84	34
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Nicholas John Karis, MD, FACS in 2015

Hypertension	75
High Cholesterol	61
Stroke	0
Ischemic Heart Disease	40
Depression	42
Chronic Kidney Disease	49
Asthma	31
Osteoperosis	0
Atrial Fibrilation	25
Heart Failure	43
Chronic Obstructive Pulmonary Disease	49
Diabetes	35
Dementia	0
Cancer	49

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Nicholas John Karis, MD, FACS treated as a thoracic surgeon in Baltimore, MD during 2016 were minimally invasive procedures, bronchoscopy, hospital care and inpatient care.

Volume of procedures performed by Dr. Nicholas John Karis, MD, FACS for Medicare patients.

bronchoscopy	40
doctor visit	36
hospital care	18
inpatient care	18
minimally invasive procedures	54
thoracic (chest) surgery procedures	14

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Nicholas John Karis, MD, FACS.

**Gender**
Male	35
Female	41

**Ethnicity**
Non-Hispanic White	63
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	32
From 75 to 84	20
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Nicholas John Karis, MD, FACS in 2016

Hypertension	75
High Cholesterol	74
Stroke	0
Ischemic Heart Disease	43
Depression	37
Chronic Kidney Disease	51
Asthma	49
Osteoperosis	0
Atrial Fibrilation	21
Heart Failure	39
Chronic Obstructive Pulmonary Disease	47
Diabetes	46
Dementia	14
Cancer	54

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Nicholas John Karis, MD, FACS treated as a thoracic surgeon in Baltimore, MD during 2017 were hospital care, inpatient care, thoracic (chest) surgery procedures and minimally invasive procedures.

Volume of procedures performed by Dr. Nicholas John Karis, MD, FACS for Medicare patients.

doctor visit	37
hospital care	21
inpatient care	21
minimally invasive procedures	12
thoracic (chest) surgery procedures	12

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Nicholas John Karis, MD, FACS.

**Gender**
Male	35
Female	47

**Ethnicity**
Non-Hispanic White	60
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	33
From 75 to 84	0
85 and over	0
Less than 65	25

Conditions of Medicare patients treated by Dr. Nicholas John Karis, MD, FACS in 2017

Hypertension	75
High Cholesterol	52
Stroke	0
Ischemic Heart Disease	41
Depression	39
Chronic Kidney Disease	48
Asthma	16
Osteoperosis	0
Atrial Fibrilation	20
Heart Failure	38
Chronic Obstructive Pulmonary Disease	45
Diabetes	34
Dementia	13
Cancer	37

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Nicholas John Karis, MD, FACS treated as a thoracic surgeon in Baltimore, MD during 2018 were thoracic (chest) surgery procedures, minimally invasive procedures, excision and dissection.

Volume of procedures performed by Dr. Nicholas John Karis, MD, FACS for Medicare patients.

dissection	17
doctor visit	35
excision	30
hospital care	14
inpatient care	14
lobectomy	13
lymph node procedures	17
minimally invasive procedures	57
thoracic (chest) surgery procedures	57

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Nicholas John Karis, MD, FACS.

**Gender**
Male	47
Female	37

**Ethnicity**
Non-Hispanic White	65
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	30
From 75 to 84	27
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Nicholas John Karis, MD, FACS in 2018

Hypertension	75
High Cholesterol	74
Stroke	0
Ischemic Heart Disease	52
Depression	42
Chronic Kidney Disease	57
Asthma	0
Osteoperosis	0
Atrial Fibrilation	25
Heart Failure	48
Chronic Obstructive Pulmonary Disease	55
Diabetes	46
Dementia	14
Cancer	49

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Nicholas John Karis, MD, FACS treated as a thoracic surgeon in Baltimore, MD during 2019 were hospital care, inpatient care, thoracic (chest) surgery procedures and minimally invasive procedures.

Volume of procedures performed by Dr. Nicholas John Karis, MD, FACS for Medicare patients.

dissection	13
doctor visit	22
excision	13
hospital care	29
inpatient care	29
lobectomy	13
lymph node procedures	13
minimally invasive procedures	26
thoracic (chest) surgery procedures	26

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Nicholas John Karis, MD, FACS.

**Gender**
Male	49
Female	29

**Ethnicity**
Non-Hispanic White	51
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	34
From 75 to 84	27
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Nicholas John Karis, MD, FACS in 2019

Hypertension	75
High Cholesterol	65
Stroke	0
Ischemic Heart Disease	59
Depression	37
Chronic Kidney Disease	63
Asthma	15
Osteoperosis	0
Atrial Fibrilation	17
Heart Failure	46
Chronic Obstructive Pulmonary Disease	56
Diabetes	51
Dementia	24
Cancer	51

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Nicholas John Karis, MD, FACS treated as a thoracic surgeon in Baltimore, MD during 2020 were hospital care, inpatient care, thoracic (chest) surgery procedures and minimally invasive procedures.

Volume of procedures performed by Dr. Nicholas John Karis, MD, FACS for Medicare patients.

dissection	12
doctor visit	31
excision	12
hospital care	122
inpatient care	122
lymph node procedures	12
minimally invasive procedures	25
thoracic (chest) surgery procedures	25

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Nicholas John Karis, MD, FACS.

**Gender**
Male	47
Female	50

**Ethnicity**
Non-Hispanic White	52
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	34
From 75 to 84	31
85 and over	17
Less than 65	15

Conditions of Medicare patients treated by Dr. Nicholas John Karis, MD, FACS in 2020

Hypertension	75
High Cholesterol	72
Stroke	13
Ischemic Heart Disease	67
Depression	37
Chronic Kidney Disease	62
Asthma	15
Osteoperosis	0
Atrial Fibrilation	22
Heart Failure	38
Chronic Obstructive Pulmonary Disease	48
Diabetes	43
Dementia	37
Cancer	32

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Nicholas John Karis, MD, FACS treated as a thoracic surgeon in Baltimore, MD during 2021 were hospital care, inpatient care, thoracostomy and thoracic (chest) surgery procedures.

Volume of procedures performed by Dr. Nicholas John Karis, MD, FACS for Medicare patients.

doctor visit	55
hospital care	57
inpatient care	57
open surgery	12
thoracic (chest) surgery procedures	12
thoracostomy	12

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Nicholas John Karis, MD, FACS.

**Gender**
Male	43
Female	53

**Ethnicity**
Non-Hispanic White	46
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	46
From 75 to 84	27
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Nicholas John Karis, MD, FACS in 2021

Hypertension	75
High Cholesterol	69
Stroke	0
Ischemic Heart Disease	50
Depression	32
Chronic Kidney Disease	53
Asthma	13
Osteoperosis	15
Atrial Fibrilation	13
Heart Failure	28
Chronic Obstructive Pulmonary Disease	43
Diabetes	43
Dementia	21
Cancer	39

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Nicholas John Karis, MD, FACS treated as a thoracic surgeon in Baltimore, MD during 2022 were thoracic (chest) surgery procedures, minimally invasive procedures, hospital care and inpatient care.

Volume of procedures performed by Dr. Nicholas John Karis, MD, FACS for Medicare patients.

dissection	19
doctor visit	121
excision	35
hospital care	46
inpatient care	46
lobectomy	15
lymph node procedures	19
minimally invasive procedures	50
open surgery	11
thoracic (chest) surgery procedures	61
thoracostomy	11

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Nicholas John Karis, MD, FACS.

**Gender**
Male	55
Female	59

**Ethnicity**
Non-Hispanic White	60
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	51
From 75 to 84	41
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Nicholas John Karis, MD, FACS in 2022

Hypertension	75
High Cholesterol	75
Stroke	17
Ischemic Heart Disease	41
Depression	32
Chronic Kidney Disease	32
Asthma	17
Osteoperosis	12
Atrial Fibrilation	22
Heart Failure	25
Chronic Obstructive Pulmonary Disease	50
Diabetes	46
Dementia	12
Cancer	57

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Nicholas John Karis, MD, FACS for Medicare patients.

The highest averages for the top procedures that Dr. Nicholas John Karis, MD, FACS treated as a thoracic surgeon in Baltimore, MD were hospital care, inpatient care, minimally invasive procedures and bronchoscopy.

bronchoscopy	30
dissection	14
doctor visit	42
excision	20
hospital care	40
inpatient care	40
lobectomy	13
lymph node procedures	14
minimally invasive procedures	35
open surgery	11
thoracic (chest) surgery procedures	28
thoracostomy	11

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Nicholas John Karis, MD, FACS.

**Gender**
Male	41
Female	39

**Ethnicity**
Black / African American	0
Asian / Pacific Islander	0
Non-Hispanic White	54
Native American / Alaskan Native	0
Hispanic	0
Other	0

**Age**
75 to 84	21
85 and over	1
Less than 65	5
65 to 74	31

Average of Total of Conditions of Medicare patients treated by Dr. Nicholas John Karis, MD, FACS From 2012 - 2022

The highest averages of the most common conditions of Medicare patients that Dr. Nicholas John Karis, MD, FACS treated were hypertension, high cholesterol, ischemic heart disease and chronic kidney disease.

Hypertension	68
High Cholesterol	61
Stroke	2
Ischemic Heart Disease	45
Depression	35
Chronic Kidney Disease	45
Asthma	14
Osteoporosis	2
Heart Failure	35
Chronic Obstructive Pulmonary Disease	44
Diabetes	38
Atrial Fibrillation	20
Dementia	12
Cancer	42

Education & Training

Dr. Nicholas John Karis, MD, FACS graduated from Rosalind Franklin University of Medicine and Science, Chicago Medical School. He completed residency at Mount Sinai Hospital, Chicago. He has a state license in Illinois.

Medical School: Rosalind Franklin University of Medicine and Science, Chicago Medical School

Residency: Mount Sinai Hospital, Chicago

Licensed In: Illinois

Affiliations & Hospitals

Dr. Nicholas John Karis, MD, FACS is associated with these hospitals and organizations:

GBMC Healthcare

Ratings & Reviews

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General Payments

These charts describe general payments received by Dr. Nicholas John Karis, MD, FACS. Doctors may receive payments for a number of reasons, including meal compensation, travel compensation, and consulting.

**Payments by Company**
Intuitive Surgical, Inc.	$14,578 Da Vinci Surgical System $14,578
Ethicon US, LLC	$702 ECHELON FLEX Stapler $404	Biosurgicals $213	Echelon; Endopath $35	ECHELON ENDOPATH $35	ECHELON ENDOPATH Stapler $14
Neomend, Inc.	$416 SURGICAL $321	DAV-Progel $95
Covidien LP	$303 superDimension $154	Endo GIA $149
Olympus Corporation of the Americas	$298 SINGLE USE SUCTION VALVE (Sterile) $298
Other	$1,340 Endo Stapling $295	Progel $182	Sutures $134	Osteosynthesis $106	Spin $104	Other $518

**Types of Payments**
Education	$10,727
Food and Beverage	$3,940
Travel and Lodging	$2,968

Biography

Dr. Nicholas Karis' specialty is thoracic surgery. Before completing his residency at Mount Sinai Hospital, Chicago, Dr. Karis attended medical school at Rosalind Franklin University of Medicine and Science, Chicago Medical School. His professional affiliations include GBMC Healthcare and Sinai Hospital of Baltimore.

Select Year:

Dr. Nicholas John Karis, MD, FACS

Office Locations

In The News

Noteworthy Medicare Patient Procedures Performed by Dr. Nicholas John Karis, MD, FACS in 2023

By Affordability:

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

2013 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Nicholas John Karis, MD, FACS in 2013

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

2014 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Nicholas John Karis, MD, FACS in 2014

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

2015 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Nicholas John Karis, MD, FACS in 2015

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

2016 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Nicholas John Karis, MD, FACS in 2016

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

2017 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Nicholas John Karis, MD, FACS in 2017

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

2018 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Nicholas John Karis, MD, FACS in 2018

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

2019 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Nicholas John Karis, MD, FACS in 2019

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

2020 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Nicholas John Karis, MD, FACS in 2020

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

2021 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Nicholas John Karis, MD, FACS in 2021

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

2022 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Nicholas John Karis, MD, FACS in 2022

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Average Medicare Patient Data From 2012 - 2022

Average of Total of Conditions of Medicare patients treated by Dr. Nicholas John Karis, MD, FACS From 2012 - 2022

Education & Training

Affiliations & Hospitals

Ratings & Reviews

General Payments

Biography

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