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Dr. Mark Louis Merlin, MD

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Specializes in: Radiation Oncology

2349 Lawrenceville Highway
Decatur, GA 30033

(404) 320-1550

Dr. Mark Louis Merlin, MD is a radiation oncologist in Decatur, GA specializing in radiation oncology. Dr. Mark Louis Merlin, MD is affiliated with Piedmont Healthcare.

Office Locations

Piedmont Healthcare

2349 Lawrenceville Highway
Decatur, GA 30033

(404) 320-1550

(404) 728-1081

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Noteworthy Medicare Patient Procedures Performed by Dr. Mark Louis Merlin, MD in 2023

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

Top 25%

By Affordability:

external beam radiation therapy

In 2012, Dr. Mark Louis Merlin, MD had a list price for external beam radiation therapy (EBRT) that was lower than the list prices billed to Medicare by 75% of providers in related specialties within Georgia. 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. Mark Louis Merlin, MD treated as a radiation oncologist in Decatur, GA during 2012 were radiation therapy, blood draw and urologic procedures.

Volume of procedures performed by Dr. Mark Louis Merlin, MD for Medicare patients.

blood draw	487
doctor visit	1023
radiation therapy	2722
urologic procedures	233

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Mark Louis Merlin, MD treated as a radiation oncologist in Decatur, GA during 2013 were radiation therapy, blood draw and urologic procedures.

Volume of procedures performed by Dr. Mark Louis Merlin, MD for Medicare patients.

blood draw	413
doctor visit	884
radiation therapy	2405
urologic procedures	197

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark Louis Merlin, MD.

**Gender**
Male	506
Female	18

**Ethnicity**
Non-Hispanic White	330
Black	169
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	290
From 75 to 84	184
85 and over	27
Less than 65	23

Conditions of Medicare patients treated by Dr. Mark Louis Merlin, MD in 2013

Hypertension	66
High Cholesterol	56
Stroke	4
Ischemic Heart Disease	31
Depression	6
Chronic Kidney Disease	21
Asthma	4
Osteoperosis	0
Atrial Fibrilation	8
Heart Failure	11
Chronic Obstructive Pulmonary Disease	7
Diabetes	29
Dementia	6
Cancer	75

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Mark Louis Merlin, MD treated as a radiation oncologist in Decatur, GA during 2014 were radiation therapy, blood draw and urologic procedures.

Volume of procedures performed by Dr. Mark Louis Merlin, MD for Medicare patients.

blood draw	380
doctor visit	859
radiation therapy	2015
urologic procedures	139

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark Louis Merlin, MD.

**Gender**
Male	477
Female	32

**Ethnicity**
Non-Hispanic White	321
Black	161
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	273
From 75 to 84	185
85 and over	29
Less than 65	22

Conditions of Medicare patients treated by Dr. Mark Louis Merlin, MD in 2014

Hypertension	71
High Cholesterol	58
Stroke	4
Ischemic Heart Disease	31
Depression	6
Chronic Kidney Disease	20
Asthma	3
Osteoperosis	0
Atrial Fibrilation	8
Heart Failure	10
Chronic Obstructive Pulmonary Disease	6
Diabetes	27
Dementia	3
Cancer	75

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Mark Louis Merlin, MD treated as a radiation oncologist in Decatur, GA during 2015 were radiation therapy, blood draw and urologic procedures.

Volume of procedures performed by Dr. Mark Louis Merlin, MD for Medicare patients.

blood draw	272
doctor visit	794
radiation therapy	321
urologic procedures	125

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark Louis Merlin, MD.

**Gender**
Male	866
Female	76

**Ethnicity**
Non-Hispanic White	554
Black	326
Hispanic	0
Asian	0
Other	28
Native American	0

**Age**
From 65 to 74	530
From 75 to 84	318
85 and over	52
Less than 65	42

Conditions of Medicare patients treated by Dr. Mark Louis Merlin, MD in 2015

Hypertension	66
High Cholesterol	53
Stroke	4
Ischemic Heart Disease	30
Depression	8
Chronic Kidney Disease	21
Asthma	7
Osteoperosis	0
Atrial Fibrilation	8
Heart Failure	9
Chronic Obstructive Pulmonary Disease	9
Diabetes	28
Dementia	4
Cancer	75

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Mark Louis Merlin, MD treated as a radiation oncologist in Decatur, GA during 2016 were blood draw, urologic procedures and radiation therapy.

Volume of procedures performed by Dr. Mark Louis Merlin, MD for Medicare patients.

blood draw	250
doctor visit	777
radiation therapy	61
urologic procedures	154

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark Louis Merlin, MD.

**Gender**
Male	419
Female	14

**Ethnicity**
Non-Hispanic White	253
Black	153
Hispanic	0
Asian	0
Other	12
Native American	0

**Age**
From 65 to 74	260
From 75 to 84	133
85 and over	23
Less than 65	17

Conditions of Medicare patients treated by Dr. Mark Louis Merlin, MD in 2016

Hypertension	69
High Cholesterol	54
Stroke	4
Ischemic Heart Disease	32
Depression	6
Chronic Kidney Disease	27
Asthma	8
Osteoperosis	0
Atrial Fibrilation	6
Heart Failure	10
Chronic Obstructive Pulmonary Disease	7
Diabetes	28
Dementia	5
Cancer	75

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Mark Louis Merlin, MD treated as a radiation oncologist in Decatur, GA during 2017 were blood draw, radiation therapy and urologic procedures.

Volume of procedures performed by Dr. Mark Louis Merlin, MD for Medicare patients.

blood draw	208
doctor visit	689
radiation therapy	168
urologic procedures	105

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark Louis Merlin, MD.

**Gender**
Male	361
Female	13

**Ethnicity**
Non-Hispanic White	210
Black	133
Hispanic	0
Asian	0
Other	14
Native American	0

**Age**
From 65 to 74	217
From 75 to 84	125
85 and over	12
Less than 65	20

Conditions of Medicare patients treated by Dr. Mark Louis Merlin, MD in 2017

Hypertension	69
High Cholesterol	48
Stroke	5
Ischemic Heart Disease	30
Depression	8
Chronic Kidney Disease	30
Asthma	4
Osteoperosis	0
Atrial Fibrilation	7
Heart Failure	9
Chronic Obstructive Pulmonary Disease	9
Diabetes	32
Dementia	4
Cancer	75

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Mark Louis Merlin, MD treated as a radiation oncologist in Decatur, GA during 2018 were blood draw, radiation therapy and urologic procedures.

Volume of procedures performed by Dr. Mark Louis Merlin, MD for Medicare patients.

blood draw	202
doctor visit	680
radiation therapy	155
urologic procedures	134

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark Louis Merlin, MD.

**Gender**
Male	340
Female	16

**Ethnicity**
Non-Hispanic White	203
Black	121
Hispanic	0
Asian	0
Other	17
Native American	0

**Age**
From 65 to 74	196
From 75 to 84	122
85 and over	22
Less than 65	0

Conditions of Medicare patients treated by Dr. Mark Louis Merlin, MD in 2018

Hypertension	71
High Cholesterol	55
Stroke	4
Ischemic Heart Disease	28
Depression	11
Chronic Kidney Disease	31
Asthma	3
Osteoperosis	0
Atrial Fibrilation	6
Heart Failure	10
Chronic Obstructive Pulmonary Disease	7
Diabetes	31
Dementia	4
Cancer	75

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Mark Louis Merlin, MD treated as a radiation oncologist in Decatur, GA during 2019 were blood draw, radiation therapy and urologic procedures.

Volume of procedures performed by Dr. Mark Louis Merlin, MD for Medicare patients.

blood draw	156
doctor visit	486
radiation therapy	131
urologic procedures	81

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark Louis Merlin, MD.

**Gender**
Male	287
Female	24

**Ethnicity**
Non-Hispanic White	161
Black	118
Hispanic	0
Asian	0
Other	18
Native American	0

**Age**
From 65 to 74	186
From 75 to 84	99
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Mark Louis Merlin, MD in 2019

Hypertension	71
High Cholesterol	60
Stroke	4
Ischemic Heart Disease	32
Depression	8
Chronic Kidney Disease	32
Asthma	6
Osteoperosis	0
Atrial Fibrilation	7
Heart Failure	9
Chronic Obstructive Pulmonary Disease	7
Diabetes	30
Dementia	0
Cancer	75

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Mark Louis Merlin, MD treated as a radiation oncologist in Decatur, GA during 2020 were blood draw, radiation therapy and urologic procedures.

Volume of procedures performed by Dr. Mark Louis Merlin, MD for Medicare patients.

blood draw	112
doctor visit	408
radiation therapy	111
urologic procedures	16

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark Louis Merlin, MD.

**Gender**
Male	206
Female	20

**Ethnicity**
Non-Hispanic White	115
Black	92
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	135
From 75 to 84	69
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Mark Louis Merlin, MD in 2020

Hypertension	67
High Cholesterol	58
Stroke	7
Ischemic Heart Disease	33
Depression	8
Chronic Kidney Disease	33
Asthma	0
Osteoperosis	0
Atrial Fibrilation	5
Heart Failure	11
Chronic Obstructive Pulmonary Disease	6
Diabetes	28
Dementia	0
Cancer	75

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Mark Louis Merlin, MD treated as a radiation oncologist in Decatur, GA during 2021 were radiation therapy and blood draw.

Volume of procedures performed by Dr. Mark Louis Merlin, MD for Medicare patients.

blood draw	54
doctor visit	377
radiation therapy	191

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark Louis Merlin, MD.

**Gender**
Male	188
Female	24

**Ethnicity**
Non-Hispanic White	109
Black	88
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	120
From 75 to 84	73
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Mark Louis Merlin, MD in 2021

Hypertension	71
High Cholesterol	66
Stroke	7
Ischemic Heart Disease	32
Depression	11
Chronic Kidney Disease	36
Asthma	6
Osteoperosis	0
Atrial Fibrilation	8
Heart Failure	11
Chronic Obstructive Pulmonary Disease	8
Diabetes	24
Dementia	0
Cancer	75

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Mark Louis Merlin, MD treated as a radiation oncologist in Decatur, GA during 2022 were radiation therapy.

Volume of procedures performed by Dr. Mark Louis Merlin, MD for Medicare patients.

doctor visit	306
radiation therapy	224

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Mark Louis Merlin, MD.

**Gender**
Male	189
Female	28

**Ethnicity**
Non-Hispanic White	111
Black	84
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	135
From 75 to 84	64
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Mark Louis Merlin, MD in 2022

Hypertension	75
High Cholesterol	72
Stroke	5
Ischemic Heart Disease	18
Depression	6
Chronic Kidney Disease	25
Asthma	8
Osteoperosis	6
Atrial Fibrilation	9
Heart Failure	5
Chronic Obstructive Pulmonary Disease	12
Diabetes	29
Dementia	0
Cancer	75

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Mark Louis Merlin, MD for Medicare patients.

The highest averages for the top procedures that Dr. Mark Louis Merlin, MD treated as a radiation oncologist in Decatur, GA were radiation therapy, blood draw and urologic procedures.

blood draw	253
doctor visit	662
radiation therapy	773
urologic procedures	131

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Mark Louis Merlin, MD.

**Gender**
Male	349
Female	24

**Ethnicity**
Black / African American	131
Asian / Pacific Islander	0
Non-Hispanic White	215
Native American / Alaskan Native	0
Hispanic	0
Other	8

**Age**
75 to 84	124
85 and over	15
Less than 65	11
65 to 74	212

Average of Total of Conditions of Medicare patients treated by Dr. Mark Louis Merlin, MD From 2012 - 2022

The highest averages of the most common conditions of Medicare patients that Dr. Mark Louis Merlin, MD treated were cancer, hypertension, high cholesterol and ischemic heart disease.

Hypertension	63
High Cholesterol	52
Stroke	4
Ischemic Heart Disease	27
Depression	7
Chronic Kidney Disease	25
Asthma	4
Osteoporosis	0
Heart Failure	8
Chronic Obstructive Pulmonary Disease	7
Diabetes	26
Atrial Fibrillation	6
Dementia	2
Cancer	68

Education & Training

He completed residency at Medical College of Georgia Affiliated Hospitals. He is certified by the American Board of Radiology - Radiation Oncology and has a state license in Georgia.

Residency: Medical College of Georgia Affiliated Hospitals (1997)

Board Certification: American Board of Radiology - Radiation Oncology

Licensed In: Georgia

Affiliations & Hospitals

Dr. Mark Louis Merlin, MD is associated with these hospitals and organizations:

Piedmont Healthcare

Ratings & Reviews

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General Payments

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

**Payments by Company**
Blue Earth Diagnostics Limited	$166 Axumin $166
Teleflex LLC	$134 Urolift $134
Bayer HealthCare Pharmaceuticals Inc.	$13 Xofigo $13
Augmenix, Inc.	$12 SpaceOAR $12

**Types of Payments**
Food and Beverage	$326

Biography

Dr. Mark Merlin's specialty is radiation oncology. He attended Louisiana State University School of Medicine in New Orleans for medical school and subsequently trained at a hospital affiliated with Medical College of Georgia for residency. He is professionally affiliated with Piedmont Healthcare. Dr. Merlin has an open panel in Decatur, GA according to Piedmont Healthcare.

Select Year:

Dr. Mark Louis Merlin, MD

Office Locations

Noteworthy Medicare Patient Procedures Performed by Dr. Mark Louis Merlin, MD 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. Mark Louis Merlin, MD in 2013

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

2014 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Mark Louis Merlin, MD in 2014

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

2015 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Mark Louis Merlin, MD in 2015

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

2016 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Mark Louis Merlin, MD in 2016

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

2017 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Mark Louis Merlin, MD in 2017

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

2018 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Mark Louis Merlin, MD in 2018

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

2019 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Mark Louis Merlin, MD in 2019

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

2020 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Mark Louis Merlin, MD in 2020

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

2021 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Mark Louis Merlin, MD in 2021

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

2022 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Mark Louis Merlin, MD 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. Mark Louis Merlin, MD From 2012 - 2022

Education & Training

Affiliations & Hospitals

Ratings & Reviews

General Payments

Biography

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