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Dr. Christian A. Merlo, MD

(Christian A Merlo MD, MPH)

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Specializes in: Pulmonology (Lung & Respiratory Disease)

Georgetown University School of Medicine (1996)

601 North Caroline Street Floor 7 Johns Hopkins Outpatient Center
Baltimore, MD 21287

(410) 550-5864

Dr. Christian A. Merlo, MD is a pulmonologist in Baltimore, MD specializing in pulmonology (lung & respiratory disease). He graduated from Georgetown University School of Medicine in 1996 and has 30 years of experience. Dr. Christian A. Merlo, MD is affiliated with Johns Hopkins University and The Johns Hopkins Hospital (Main Entrance).

Office Locations

601 North Caroline Street Floor 7 Johns Hopkins Outpatient Center
Baltimore, MD 21287

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601 North Caroline Street Floor 7
Baltimore, MD 21287

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10751 Falls Road Falls Concourse Suite 412
Lutherville, MD 21093

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In The News

“Christian Merlo, MD, MPH, of Johns Hopkins Medicine in Baltimore, commented that ETI has been a "life changing" treatment for many patients, leading to improved symptoms, lung function, and overall...”—"Some Sinus Relief for Cystic Fibrosis Patients on Trikafta", MedPage Today, September 2023

Noteworthy Medicare Patient Procedures Performed by Dr. Christian A. Merlo, MD in 2023

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

Top 25%

By Volume:

inpatient hospital care

In 2012, Dr. Christian A. Merlo, MD performed more inpatient hospital care (for patient admitted to hospital) procedures for Medicare patients than 75% of providers in related specialties within Maryland.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Christian A. Merlo, MD treated as a pulmonologist in Baltimore, MD during 2012 were hospital care, inpatient care, pulmonary testing and bronchoscopy.

Volume of procedures performed by Dr. Christian A. Merlo, MD for Medicare patients.

bronchoscopy	16
diagnostic procedures	16
doctor visit	127
hospital care	299
inpatient care	299
minimally invasive procedures	16
pulmonary testing	286

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Christian A. Merlo, MD treated as a pulmonologist in Baltimore, MD during 2013 were hospital care, inpatient care, pulmonary testing and bronchoscopy.

Volume of procedures performed by Dr. Christian A. Merlo, MD for Medicare patients.

bronchoscopy	13
doctor visit	134
hospital care	244
inpatient care	244
pulmonary testing	115

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Christian A. Merlo, MD.

**Gender**
Male	115
Female	149

**Ethnicity**
Non-Hispanic White	166
Black	82
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	113
From 75 to 84	32
85 and over	13
Less than 65	106

Conditions of Medicare patients treated by Dr. Christian A. Merlo, MD in 2013

Hypertension	71
High Cholesterol	52
Stroke	7
Ischemic Heart Disease	58
Depression	31
Chronic Kidney Disease	46
Asthma	15
Osteoperosis	16
Atrial Fibrilation	16
Heart Failure	36
Chronic Obstructive Pulmonary Disease	42
Diabetes	37
Dementia	6
Cancer	14

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Christian A. Merlo, MD treated as a pulmonologist in Baltimore, MD during 2014 were pulmonary testing, hospital care and inpatient care.

Volume of procedures performed by Dr. Christian A. Merlo, MD for Medicare patients.

doctor visit	111
hospital care	171
inpatient care	171
pulmonary testing	192

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Christian A. Merlo, MD.

**Gender**
Male	153
Female	193

**Ethnicity**
Non-Hispanic White	211
Black	121
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	132
From 75 to 84	48
85 and over	14
Less than 65	152

Conditions of Medicare patients treated by Dr. Christian A. Merlo, MD in 2014

Hypertension	69
High Cholesterol	53
Stroke	10
Ischemic Heart Disease	58
Depression	26
Chronic Kidney Disease	48
Asthma	17
Osteoperosis	14
Atrial Fibrilation	16
Heart Failure	40
Chronic Obstructive Pulmonary Disease	40
Diabetes	40
Dementia	5
Cancer	15

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Christian A. Merlo, MD treated as a pulmonologist in Baltimore, MD during 2015 were hospital care, inpatient care and bronchoscopy.

Volume of procedures performed by Dr. Christian A. Merlo, MD for Medicare patients.

bronchoscopy	12
doctor visit	151
hospital care	191
inpatient care	191

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Christian A. Merlo, MD.

**Gender**
Male	164
Female	206

**Ethnicity**
Non-Hispanic White	218
Black	128
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	160
From 75 to 84	0
85 and over	0
Less than 65	154

Conditions of Medicare patients treated by Dr. Christian A. Merlo, MD in 2015

Hypertension	71
High Cholesterol	50
Stroke	16
Ischemic Heart Disease	68
Depression	35
Chronic Kidney Disease	60
Asthma	29
Osteoperosis	17
Atrial Fibrilation	18
Heart Failure	45
Chronic Obstructive Pulmonary Disease	50
Diabetes	42
Dementia	8
Cancer	11

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Christian A. Merlo, MD treated as a pulmonologist in Baltimore, MD during 2016 were hospital care and inpatient care.

Volume of procedures performed by Dr. Christian A. Merlo, MD for Medicare patients.

doctor visit	153
hospital care	87
inpatient care	87

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Christian A. Merlo, MD.

**Gender**
Male	74
Female	79

**Ethnicity**
Non-Hispanic White	90
Black	52
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	59
From 75 to 84	0
85 and over	0
Less than 65	65

Conditions of Medicare patients treated by Dr. Christian A. Merlo, MD in 2016

Hypertension	75
High Cholesterol	54
Stroke	10
Ischemic Heart Disease	69
Depression	37
Chronic Kidney Disease	65
Asthma	42
Osteoperosis	12
Atrial Fibrilation	19
Heart Failure	54
Chronic Obstructive Pulmonary Disease	44
Diabetes	47
Dementia	16
Cancer	10

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Christian A. Merlo, MD treated as a pulmonologist in Baltimore, MD during 2017 were hospital care, inpatient care, bronchoscopy and minimally invasive procedures.

Volume of procedures performed by Dr. Christian A. Merlo, MD for Medicare patients.

bronchoscopy	33
diagnostic procedures	13
doctor visit	201
hospital care	365
inpatient care	365
minimally invasive procedures	13

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Christian A. Merlo, MD.

**Gender**
Male	78
Female	135

**Ethnicity**
Non-Hispanic White	133
Black	68
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	90
From 75 to 84	0
85 and over	0
Less than 65	86

Conditions of Medicare patients treated by Dr. Christian A. Merlo, MD in 2017

Hypertension	75
High Cholesterol	50
Stroke	10
Ischemic Heart Disease	67
Depression	40
Chronic Kidney Disease	58
Asthma	20
Osteoperosis	20
Atrial Fibrilation	22
Heart Failure	54
Chronic Obstructive Pulmonary Disease	54
Diabetes	43
Dementia	17
Cancer	8

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Christian A. Merlo, MD treated as a pulmonologist in Baltimore, MD during 2018 were hospital care, inpatient care, bronchoscopy and minimally invasive procedures.

Volume of procedures performed by Dr. Christian A. Merlo, MD for Medicare patients.

bronchoscopy	31
diagnostic procedures	13
doctor visit	221
hospital care	466
inpatient care	466
minimally invasive procedures	13

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Christian A. Merlo, MD.

**Gender**
Male	80
Female	122

**Ethnicity**
Non-Hispanic White	123
Black	65
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	80
From 75 to 84	0
85 and over	0
Less than 65	76

Conditions of Medicare patients treated by Dr. Christian A. Merlo, MD in 2018

Hypertension	75
High Cholesterol	59
Stroke	6
Ischemic Heart Disease	74
Depression	47
Chronic Kidney Disease	65
Asthma	18
Osteoperosis	15
Atrial Fibrilation	18
Heart Failure	53
Chronic Obstructive Pulmonary Disease	50
Diabetes	50
Dementia	18
Cancer	11

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Christian A. Merlo, MD treated as a pulmonologist in Baltimore, MD during 2019 were hospital care and inpatient care.

Volume of procedures performed by Dr. Christian A. Merlo, MD for Medicare patients.

doctor visit	180
hospital care	296
inpatient care	296

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Christian A. Merlo, MD.

**Gender**
Male	71
Female	94

**Ethnicity**
Non-Hispanic White	103
Black	43
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	69
From 75 to 84	0
85 and over	0
Less than 65	64

Conditions of Medicare patients treated by Dr. Christian A. Merlo, MD in 2019

Hypertension	74
High Cholesterol	58
Stroke	9
Ischemic Heart Disease	68
Depression	42
Chronic Kidney Disease	72
Asthma	22
Osteoperosis	16
Atrial Fibrilation	16
Heart Failure	50
Chronic Obstructive Pulmonary Disease	56
Diabetes	50
Dementia	19
Cancer	10

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Christian A. Merlo, MD treated as a pulmonologist in Baltimore, MD during 2020 were hospital care and inpatient care.

Volume of procedures performed by Dr. Christian A. Merlo, MD for Medicare patients.

doctor visit	143
hospital care	268
inpatient care	268

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Christian A. Merlo, MD.

**Gender**
Male	62
Female	87

**Ethnicity**
Non-Hispanic White	83
Black	47
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	71
From 75 to 84	0
85 and over	0
Less than 65	52

Conditions of Medicare patients treated by Dr. Christian A. Merlo, MD in 2020

Hypertension	72
High Cholesterol	54
Stroke	9
Ischemic Heart Disease	74
Depression	32
Chronic Kidney Disease	74
Asthma	15
Osteoperosis	19
Atrial Fibrilation	18
Heart Failure	44
Chronic Obstructive Pulmonary Disease	47
Diabetes	49
Dementia	19
Cancer	11

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Christian A. Merlo, MD treated as a pulmonologist in Baltimore, MD during 2021 were hospital care and inpatient care.

Volume of procedures performed by Dr. Christian A. Merlo, MD for Medicare patients.

doctor visit	131
hospital care	243
inpatient care	243

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Christian A. Merlo, MD.

**Gender**
Male	76
Female	84

**Ethnicity**
Non-Hispanic White	89
Black	56
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	69
From 75 to 84	0
85 and over	0
Less than 65	55

Conditions of Medicare patients treated by Dr. Christian A. Merlo, MD in 2021

Hypertension	75
High Cholesterol	61
Stroke	16
Ischemic Heart Disease	75
Depression	43
Chronic Kidney Disease	75
Asthma	18
Osteoperosis	17
Atrial Fibrilation	23
Heart Failure	45
Chronic Obstructive Pulmonary Disease	46
Diabetes	44
Dementia	18
Cancer	9

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Christian A. Merlo, MD treated as a pulmonologist in Baltimore, MD during 2022 were hospital care and inpatient care.

Volume of procedures performed by Dr. Christian A. Merlo, MD for Medicare patients.

doctor visit	151
hospital care	212
inpatient care	212

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Christian A. Merlo, MD.

**Gender**
Male	68
Female	73

**Ethnicity**
Non-Hispanic White	98
Black	26
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	75
From 75 to 84	0
85 and over	0
Less than 65	42

Conditions of Medicare patients treated by Dr. Christian A. Merlo, MD in 2022

Hypertension	75
High Cholesterol	68
Stroke	11
Ischemic Heart Disease	52
Depression	39
Chronic Kidney Disease	57
Asthma	21
Osteoperosis	30
Atrial Fibrilation	32
Heart Failure	34
Chronic Obstructive Pulmonary Disease	62
Diabetes	45
Dementia	0
Cancer	11

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Christian A. Merlo, MD for Medicare patients.

The highest averages for the top procedures that Dr. Christian A. Merlo, MD treated as a pulmonologist in Baltimore, MD were hospital care, inpatient care, pulmonary testing and bronchoscopy.

bronchoscopy	21
diagnostic procedures	14
doctor visit	154
hospital care	258
inpatient care	258
minimally invasive procedures	14
pulmonary testing	197

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Christian A. Merlo, MD.

**Gender**
Male	85
Female	111

**Ethnicity**
Black / African American	62
Asian / Pacific Islander	0
Non-Hispanic White	119
Hispanic	0
Native American / Alaskan Native	0
Other	0

**Age**
75 to 84	7
85 and over	2
Less than 65	77
65 to 74	83

Average of Total of Conditions of Medicare patients treated by Dr. Christian A. Merlo, MD From 2012 - 2022

The highest averages of the most common conditions of Medicare patients that Dr. Christian A. Merlo, MD treated were hypertension, ischemic heart disease, chronic kidney disease and high cholesterol.

Hypertension	66
High Cholesterol	50
Stroke	9
Ischemic Heart Disease	60
Depression	33
Chronic Kidney Disease	56
Asthma	19
Osteoporosis	16
Heart Failure	41
Chronic Obstructive Pulmonary Disease	44
Diabetes	40
Atrial Fibrillation	18
Cancer	10
Dementia	11

Education & Training

Dr. Christian A. Merlo, MD graduated from Georgetown University School of Medicine in 1996. He has a state license in Maryland.

Medical School: Georgetown University School of Medicine (1996)

Licensed In: Maryland

Affiliations & Hospitals

Dr. Christian A. Merlo, MD is associated with these hospitals and organizations:

Johns Hopkins University

The Johns Hopkins Hospital (Main Entrance)

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General Payments

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

**Payments by Company**
Novartis Pharmaceuticals Corporation	$122,995 TOBI PODHALER $66,774	NON_BRAND $34,970	TOBI $1,166	XOLAIR $28	$20,058
Gilead Sciences, Inc.	$92,914 Cayston $57,626	$35,288
Genentech USA, Inc.	$57,932 Pulmozyme $8,903	$49,029
Gilead Sciences Inc	$47,961 Cayston $31,208	$16,753
Vertex Pharmaceuticals Incorporated	$29,530 TRIKAFTA $14,400	KALYDECO $8,900	$6,230
Other	$8,659 TOBI $4,801	NIOX VERO DEVICE $375	Pertzye $22	$3,460

**Types of Payments**
Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program	$153,296
Travel and Lodging	$80,093
Compensation for serving as faculty or as a speaker for a non-accredited and noncertified continuing education program	$67,000
Consulting Fee	$51,862
Food and Beverage	$7,740

Research Payments

Dr. Christian A. Merlo, MD has received 6 research payments totaling $121,234.

Biography

Dr. Christian Merlo sees patients in Baltimore, MD and Lutherville, MD. His medical specialty is pulmonology (lung & respiratory disease). He graduated from Georgetown University School of Medicine. He is professionally affiliated with Johns Hopkins University.