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Dr. Nathaniel J. Merrell, MD

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Specializes in: General Surgery

University of Rochester School of Medicine and Dentistry (1987)

Professional interests include: gallbladder problems, breast surgery

100 Hospital Road
Leominster, MA 01453

(978) 840-6481

Dr. Nathaniel J. Merrell, MD is a general surgeon in Leominster, MA specializing in general surgery. He graduated from University of Rochester School of Medicine and Dentistry in 1987 and has 39 years of experience. Dr. Nathaniel J. Merrell, MD is affiliated with UMass Memorial HealthAlliance - Clinton Hospital and UMass Memorial Health.

Office Locations

UMass Memorial Health

100 Hospital Road
Leominster, MA 01453

(978) 840-6481

(978) 840-0506

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Noteworthy Medicare Patient Procedures Performed by Dr. Nathaniel J. Merrell, 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. Nathaniel J. Merrell, MD performed more inpatient hospital care (for patient admitted to hospital) procedures for Medicare patients than 75% of providers in related specialties within Massachusetts.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Nathaniel J. Merrell, MD treated as a general surgeon in Leominster, MA during 2012 were hospital care and inpatient care.

Volume of procedures performed by Dr. Nathaniel J. Merrell, MD for Medicare patients.

doctor visit	207
hospital care	70
inpatient care	70

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Nathaniel J. Merrell, MD treated as a general surgeon in Leominster, MA during 2013 were hospital care, inpatient care, breast procedures and cancer surgery.

Volume of procedures performed by Dr. Nathaniel J. Merrell, MD for Medicare patients.

breast procedures	15
cancer surgery	15
doctor visit	277
excision	15
hospital care	108
inpatient care	108

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Nathaniel J. Merrell, MD.

**Gender**
Male	97
Female	175

**Ethnicity**
Non-Hispanic White	239
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	88
From 75 to 84	73
85 and over	32
Less than 65	79

Conditions of Medicare patients treated by Dr. Nathaniel J. Merrell, MD in 2013

Hypertension	61
High Cholesterol	51
Stroke	5
Ischemic Heart Disease	31
Depression	36
Chronic Kidney Disease	30
Asthma	18
Osteoperosis	8
Atrial Fibrilation	9
Heart Failure	19
Chronic Obstructive Pulmonary Disease	22
Diabetes	38
Dementia	8
Cancer	31

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Nathaniel J. Merrell, MD treated as a general surgeon in Leominster, MA during 2014 were hospital care, inpatient care, breast procedures and cancer surgery.

Volume of procedures performed by Dr. Nathaniel J. Merrell, MD for Medicare patients.

breast procedures	11
cancer surgery	11
doctor visit	200
excision	11
hospital care	45
inpatient care	45

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Nathaniel J. Merrell, MD.

**Gender**
Male	76
Female	122

**Ethnicity**
Non-Hispanic White	171
Black	0
Hispanic	16
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	70
From 75 to 84	52
85 and over	28
Less than 65	48

Conditions of Medicare patients treated by Dr. Nathaniel J. Merrell, MD in 2014

Hypertension	59
High Cholesterol	49
Stroke	0
Ischemic Heart Disease	29
Depression	37
Chronic Kidney Disease	32
Asthma	19
Osteoperosis	14
Atrial Fibrilation	14
Heart Failure	19
Chronic Obstructive Pulmonary Disease	20
Diabetes	32
Dementia	14
Cancer	33

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Nathaniel J. Merrell, MD treated as a general surgeon in Leominster, MA during 2015 were hospital care, inpatient care, minor procedures and wound repair (e.g. stitches).

Volume of procedures performed by Dr. Nathaniel J. Merrell, MD for Medicare patients.

doctor visit	230
hospital care	69
inpatient care	69
minor procedures	11
wound repair (e.g. stitches)	11

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Nathaniel J. Merrell, MD.

**Gender**
Male	166
Female	262

**Ethnicity**
Non-Hispanic White	390
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	178
From 75 to 84	116
85 and over	38
Less than 65	96

Conditions of Medicare patients treated by Dr. Nathaniel J. Merrell, MD in 2015

Hypertension	66
High Cholesterol	49
Stroke	7
Ischemic Heart Disease	35
Depression	35
Chronic Kidney Disease	27
Asthma	21
Osteoperosis	7
Atrial Fibrilation	10
Heart Failure	19
Chronic Obstructive Pulmonary Disease	24
Diabetes	30
Dementia	12
Cancer	21

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Nathaniel J. Merrell, MD treated as a general surgeon in Leominster, MA during 2016 were hospital care, inpatient care, open surgery and abdominal surgery.

Volume of procedures performed by Dr. Nathaniel J. Merrell, MD for Medicare patients.

abdominal surgery	11
doctor visit	230
gastrointestinal procedures	11
hospital care	57
inpatient care	57
open surgery	11

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Nathaniel J. Merrell, MD.

**Gender**
Male	86
Female	139

**Ethnicity**
Non-Hispanic White	189
Black	0
Hispanic	22
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	79
From 75 to 84	76
85 and over	15
Less than 65	55

Conditions of Medicare patients treated by Dr. Nathaniel J. Merrell, MD in 2016

Hypertension	61
High Cholesterol	47
Stroke	0
Ischemic Heart Disease	30
Depression	35
Chronic Kidney Disease	29
Asthma	28
Osteoperosis	9
Atrial Fibrilation	8
Heart Failure	15
Chronic Obstructive Pulmonary Disease	23
Diabetes	29
Dementia	14
Cancer	30

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Nathaniel J. Merrell, MD treated as a general surgeon in Leominster, MA during 2017 were hospital care, inpatient care, breast procedures and cancer surgery.

Volume of procedures performed by Dr. Nathaniel J. Merrell, MD for Medicare patients.

breast procedures	14
cancer surgery	14
catheterization	12
doctor visit	240
excision	14
hospital care	66
inpatient care	66

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Nathaniel J. Merrell, MD.

**Gender**
Male	86
Female	138

**Ethnicity**
Non-Hispanic White	194
Black	0
Hispanic	17
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	96
From 75 to 84	50
85 and over	23
Less than 65	55

Conditions of Medicare patients treated by Dr. Nathaniel J. Merrell, MD in 2017

Hypertension	64
High Cholesterol	34
Stroke	0
Ischemic Heart Disease	26
Depression	41
Chronic Kidney Disease	24
Asthma	14
Osteoperosis	11
Atrial Fibrilation	9
Heart Failure	17
Chronic Obstructive Pulmonary Disease	18
Diabetes	23
Dementia	10
Cancer	26

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Nathaniel J. Merrell, MD treated as a general surgeon in Leominster, MA during 2018 were hospital care, inpatient care, breast procedures and cancer surgery.

Volume of procedures performed by Dr. Nathaniel J. Merrell, MD for Medicare patients.

breast procedures	16
cancer surgery	16
catheterization	13
doctor visit	221
excision	16
hospital care	53
inpatient care	53

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Nathaniel J. Merrell, MD.

**Gender**
Male	66
Female	146

**Ethnicity**
Non-Hispanic White	182
Black	0
Hispanic	18
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	100
From 75 to 84	43
85 and over	23
Less than 65	46

Conditions of Medicare patients treated by Dr. Nathaniel J. Merrell, MD in 2018

Hypertension	58
High Cholesterol	40
Stroke	0
Ischemic Heart Disease	28
Depression	31
Chronic Kidney Disease	33
Asthma	15
Osteoperosis	10
Atrial Fibrilation	14
Heart Failure	17
Chronic Obstructive Pulmonary Disease	14
Diabetes	23
Dementia	10
Cancer	25

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Nathaniel J. Merrell, MD treated as a general surgeon in Leominster, MA during 2019 were hospital care, inpatient care, excision and catheterization.

Volume of procedures performed by Dr. Nathaniel J. Merrell, MD for Medicare patients.

breast procedures	15
cancer surgery	15
catheterization	16
diagnostic procedures	11
doctor visit	231
excision	26
hospital care	170
inpatient care	170
lymph node procedures	11
open surgery	11

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Nathaniel J. Merrell, MD.

**Gender**
Male	88
Female	160

**Ethnicity**
Non-Hispanic White	223
Black	0
Hispanic	13
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	107
From 75 to 84	67
85 and over	33
Less than 65	41

Conditions of Medicare patients treated by Dr. Nathaniel J. Merrell, MD in 2019

Hypertension	69
High Cholesterol	51
Stroke	6
Ischemic Heart Disease	37
Depression	39
Chronic Kidney Disease	36
Asthma	16
Osteoperosis	12
Atrial Fibrilation	16
Heart Failure	24
Chronic Obstructive Pulmonary Disease	19
Diabetes	26
Dementia	15
Cancer	30

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Nathaniel J. Merrell, MD treated as a general surgeon in Leominster, MA during 2020 were hospital care and inpatient care.

Volume of procedures performed by Dr. Nathaniel J. Merrell, MD for Medicare patients.

doctor visit	179
hospital care	109
inpatient care	109

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Nathaniel J. Merrell, MD.

**Gender**
Male	92
Female	138

**Ethnicity**
Non-Hispanic White	201
Black	0
Hispanic	16
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	101
From 75 to 84	58
85 and over	28
Less than 65	43

Conditions of Medicare patients treated by Dr. Nathaniel J. Merrell, MD in 2020

Hypertension	67
High Cholesterol	54
Stroke	6
Ischemic Heart Disease	33
Depression	42
Chronic Kidney Disease	38
Asthma	13
Osteoperosis	8
Atrial Fibrilation	10
Heart Failure	21
Chronic Obstructive Pulmonary Disease	23
Diabetes	27
Dementia	13
Cancer	27

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Nathaniel J. Merrell, MD treated as a general surgeon in Leominster, MA during 2021 were hospital care, inpatient care, catheterization and abscess drainage.

Volume of procedures performed by Dr. Nathaniel J. Merrell, MD for Medicare patients.

abscess drainage	13
catheterization	15
doctor visit	183
hospital care	99
incision and drainage	13
inpatient care	99
minor procedures	13
skin surgery	13

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Nathaniel J. Merrell, MD.

**Gender**
Male	94
Female	136

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

**Age**
From 65 to 74	97
From 75 to 84	66
85 and over	31
Less than 65	36

Conditions of Medicare patients treated by Dr. Nathaniel J. Merrell, MD in 2021

Hypertension	70
High Cholesterol	62
Stroke	0
Ischemic Heart Disease	33
Depression	36
Chronic Kidney Disease	41
Asthma	14
Osteoperosis	13
Atrial Fibrilation	17
Heart Failure	26
Chronic Obstructive Pulmonary Disease	22
Diabetes	23
Dementia	13
Cancer	27

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Nathaniel J. Merrell, MD treated as a general surgeon in Leominster, MA during 2022 were hospital care, inpatient care, excision and minor procedures.

Volume of procedures performed by Dr. Nathaniel J. Merrell, MD for Medicare patients.

breast procedures	14
cancer surgery	14
diagnostic procedures	11
doctor visit	214
excision	25
hospital care	149
inpatient care	149
lymph node procedures	11
minor procedures	17
open surgery	11
wound repair (e.g. stitches)	17

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Nathaniel J. Merrell, MD.

**Gender**
Male	91
Female	156

**Ethnicity**
Non-Hispanic White	220
Black	0
Hispanic	16
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	101
From 75 to 84	72
85 and over	24
Less than 65	50

Conditions of Medicare patients treated by Dr. Nathaniel J. Merrell, MD in 2022

Hypertension	72
High Cholesterol	70
Stroke	10
Ischemic Heart Disease	25
Depression	40
Chronic Kidney Disease	28
Asthma	23
Osteoperosis	14
Atrial Fibrilation	20
Heart Failure	18
Chronic Obstructive Pulmonary Disease	22
Diabetes	24
Dementia	9
Cancer	32

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Nathaniel J. Merrell, MD for Medicare patients.

The highest averages for the top procedures that Dr. Nathaniel J. Merrell, MD treated as a general surgeon in Leominster, MA were inpatient care, hospital care, excision and wound repair (e.g. stitches).

abdominal surgery	11
abscess drainage	13
breast procedures	14
cancer surgery	14
catheterization	14
diagnostic procedures	11
doctor visit	219
excision	17
gastrointestinal procedures	11
hospital care	90
incision and drainage	13
inpatient care	90
lymph node procedures	11
minor procedures	13
open surgery	11
skin surgery	13
wound repair (e.g. stitches)	14

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Nathaniel J. Merrell, MD.

**Gender**
Male	85
Female	142

**Ethnicity**
Black / African American	0
Asian / Pacific Islander	0
Non-Hispanic White	201
Native American / Alaskan Native	0
Hispanic	10
Other	0

**Age**
75 to 84	61
85 and over	25
Less than 65	49
65 to 74	92

Average of Total of Conditions of Medicare patients treated by Dr. Nathaniel J. Merrell, MD From 2012 - 2022

The highest averages of the most common conditions of Medicare patients that Dr. Nathaniel J. Merrell, MD treated were hypertension, high cholesterol, depression and chronic kidney disease.

Hypertension	58
High Cholesterol	46
Stroke	3
Ischemic Heart Disease	27
Depression	33
Chronic Kidney Disease	28
Asthma	16
Osteoporosis	9
Heart Failure	17
Chronic Obstructive Pulmonary Disease	18
Diabetes	25
Atrial Fibrillation	11
Dementia	10
Cancer	25

Education & Training

Dr. Nathaniel J. Merrell, MD graduated from University of Rochester School of Medicine and Dentistry in 1987. He completed residency at University of Rochester Medical Center. He is certified by the Board Certification: General Surgery and has a state license in Massachusetts.

Medical School: University of Rochester School of Medicine and Dentistry (1987)

Residency: University of Rochester Medical Center

Board Certification: Board Certification: General Surgery

Licensed In: Massachusetts

Affiliations & Hospitals

Dr. Nathaniel J. Merrell, MD is associated with these hospitals and organizations:

UMass Memorial HealthAlliance - Clinton Hospital

UMass Memorial Health

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General Payments

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

**Payments by Company**
Olympus Corporation of the Americas	$32 Olympus Laparoscopic Insufflation $32

**Types of Payments**
Food and Beverage	$32

Biography

Dr. Nathaniel Merrell is a specialist in general surgery. He works in Leominster, MA. His areas of expertise include the following: breast surgery, gallbladder problems, and general surgery. After attending the University of Rochester School of Medicine and Dentistry for medical school, Dr. Merrell completed his residency training at the University of Rochester Medical Center. He is professionally affiliated with UMass Memorial HealthAlliance - Clinton Hospital.