In 2023, Dr. Maud L. Lemercier, MD had a list price for hospital care, inpatient care, and inpatient hospital care (for patient admitted to hospital) that was lower than the list prices billed to Medicare by 90% of providers in related specialties within New York. 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. Maud L. Lemercier, MD treated as a general surgeon in Katonah, NY during 2012 were hospital care, inpatient care, catheterization and minimally invasive procedures.

Volume of procedures performed by Dr. Maud L. Lemercier, MD for Medicare patients.

abdominal surgery	12
catheterization	13
doctor visit	202
gastrointestinal procedures	12
hospital care	22
inpatient care	22
minimally invasive procedures	12

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Maud L. Lemercier, MD treated as a general surgeon in Katonah, NY during 2013 were hospital care, inpatient care, minimally invasive procedures and abdominal surgery.

Volume of procedures performed by Dr. Maud L. Lemercier, MD for Medicare patients.

abdominal surgery	13
doctor visit	218
gastrointestinal procedures	13
hospital care	29
inpatient care	29
minimally invasive procedures	13

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Maud L. Lemercier, MD.

**Gender**
Male	105
Female	119

**Ethnicity**
Non-Hispanic White	208
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	90
From 75 to 84	81
85 and over	28
Less than 65	25

Conditions of Medicare patients treated by Dr. Maud L. Lemercier, MD in 2013

Hypertension	66
High Cholesterol	55
Stroke	6
Ischemic Heart Disease	38
Depression	22
Chronic Kidney Disease	25
Asthma	10
Osteoperosis	8
Atrial Fibrilation	15
Heart Failure	17
Chronic Obstructive Pulmonary Disease	13
Diabetes	31
Dementia	9
Cancer	21

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Maud L. Lemercier, MD treated as a general surgeon in Katonah, NY during 2014 were hospital care and inpatient care.

Volume of procedures performed by Dr. Maud L. Lemercier, MD for Medicare patients.

doctor visit	195
hospital care	22
inpatient care	22

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Maud L. Lemercier, MD.

**Gender**
Male	72
Female	116

**Age**
From 65 to 74	76
From 75 to 84	65
85 and over	36
Less than 65	11

Conditions of Medicare patients treated by Dr. Maud L. Lemercier, MD in 2014

Hypertension	64
High Cholesterol	54
Stroke	6
Ischemic Heart Disease	35
Depression	23
Chronic Kidney Disease	19
Asthma	7
Osteoperosis	10
Atrial Fibrilation	14
Heart Failure	16
Chronic Obstructive Pulmonary Disease	13
Diabetes	24
Dementia	14
Cancer	20

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Maud L. Lemercier, MD treated as a general surgeon in Katonah, NY during 2015 were hospital care, inpatient care, minimally invasive procedures and abdominal surgery.

Volume of procedures performed by Dr. Maud L. Lemercier, MD for Medicare patients.

abdominal surgery	12
doctor visit	178
gastrointestinal procedures	12
hospital care	23
inpatient care	23
minimally invasive procedures	12

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Maud L. Lemercier, MD.

**Gender**
Male	174
Female	234

**Ethnicity**
Non-Hispanic White	360
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	170
From 75 to 84	144
85 and over	66
Less than 65	28

Conditions of Medicare patients treated by Dr. Maud L. Lemercier, MD in 2015

Hypertension	65
High Cholesterol	54
Stroke	0
Ischemic Heart Disease	29
Depression	15
Chronic Kidney Disease	21
Asthma	14
Osteoperosis	13
Atrial Fibrilation	17
Heart Failure	13
Chronic Obstructive Pulmonary Disease	13
Diabetes	24
Dementia	10
Cancer	23

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Maud L. Lemercier, MD treated as a general surgeon in Katonah, NY during 2016 were hospital care and inpatient care.

Volume of procedures performed by Dr. Maud L. Lemercier, MD for Medicare patients.

doctor visit	216
hospital care	28
inpatient care	28

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Maud L. Lemercier, MD.

**Gender**
Male	91
Female	122

**Ethnicity**
Non-Hispanic White	192
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	85
From 75 to 84	76
85 and over	34
Less than 65	18

Conditions of Medicare patients treated by Dr. Maud L. Lemercier, MD in 2016

Hypertension	69
High Cholesterol	50
Stroke	0
Ischemic Heart Disease	34
Depression	20
Chronic Kidney Disease	25
Asthma	17
Osteoperosis	11
Atrial Fibrilation	17
Heart Failure	13
Chronic Obstructive Pulmonary Disease	12
Diabetes	24
Dementia	9
Cancer	22

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Maud L. Lemercier, MD treated as a general surgeon in Katonah, NY during 2017 were hospital care, inpatient care, blood draw and minimally invasive procedures.

Volume of procedures performed by Dr. Maud L. Lemercier, MD for Medicare patients.

abdominal surgery	14
blood draw	15
doctor visit	260
gastrointestinal procedures	14
hospital care	73
inpatient care	73
minimally invasive procedures	14

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Maud L. Lemercier, MD.

**Gender**
Male	102
Female	137

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

**Age**
From 65 to 74	80
From 75 to 84	87
85 and over	49
Less than 65	23

Conditions of Medicare patients treated by Dr. Maud L. Lemercier, MD in 2017

Hypertension	64
High Cholesterol	49
Stroke	5
Ischemic Heart Disease	31
Depression	24
Chronic Kidney Disease	26
Asthma	9
Osteoperosis	12
Atrial Fibrilation	17
Heart Failure	20
Chronic Obstructive Pulmonary Disease	12
Diabetes	23
Dementia	13
Cancer	24

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Maud L. Lemercier, MD treated as a general surgeon in Katonah, NY during 2018 were hospital care, inpatient care, minimally invasive procedures and abdominal surgery.

Volume of procedures performed by Dr. Maud L. Lemercier, MD for Medicare patients.

abdominal surgery	14
catheterization	11
doctor visit	208
gastrointestinal procedures	14
hospital care	22
inpatient care	22
minimally invasive procedures	14

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Maud L. Lemercier, MD.

**Gender**
Male	86
Female	118

**Ethnicity**
Non-Hispanic White	185
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	81
From 75 to 84	74
85 and over	30
Less than 65	19

Conditions of Medicare patients treated by Dr. Maud L. Lemercier, MD in 2018

Hypertension	60
High Cholesterol	56
Stroke	0
Ischemic Heart Disease	33
Depression	22
Chronic Kidney Disease	28
Asthma	9
Osteoperosis	13
Atrial Fibrilation	10
Heart Failure	16
Chronic Obstructive Pulmonary Disease	13
Diabetes	25
Dementia	7
Cancer	22

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Maud L. Lemercier, MD treated as a general surgeon in Katonah, NY during 2019 were hospital care, inpatient care, minimally invasive procedures and abdominal surgery.

Volume of procedures performed by Dr. Maud L. Lemercier, MD for Medicare patients.

abdominal surgery	19
doctor visit	200
gastrointestinal procedures	19
hospital care	62
inpatient care	62
minimally invasive procedures	19

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Maud L. Lemercier, MD.

**Gender**
Male	86
Female	111

**Ethnicity**
Non-Hispanic White	173
Black	0
Hispanic	0
Asian	0
Other	12
Native American	0

**Age**
From 65 to 74	87
From 75 to 84	70
85 and over	29
Less than 65	11

Conditions of Medicare patients treated by Dr. Maud L. Lemercier, MD in 2019

Hypertension	66
High Cholesterol	57
Stroke	6
Ischemic Heart Disease	35
Depression	24
Chronic Kidney Disease	32
Asthma	9
Osteoperosis	10
Atrial Fibrilation	18
Heart Failure	18
Chronic Obstructive Pulmonary Disease	11
Diabetes	24
Dementia	13
Cancer	21

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Maud L. Lemercier, MD treated as a general surgeon in Katonah, NY during 2020 were minimally invasive procedures, abdominal surgery and gastrointestinal procedures.

Volume of procedures performed by Dr. Maud L. Lemercier, MD for Medicare patients.

abdominal surgery	11
doctor visit	137
gastrointestinal procedures	11
minimally invasive procedures	11

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Maud L. Lemercier, MD.

**Gender**
Male	53
Female	85

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

**Age**
From 65 to 74	61
From 75 to 84	43
85 and over	18
Less than 65	16

Conditions of Medicare patients treated by Dr. Maud L. Lemercier, MD in 2020

Hypertension	52
High Cholesterol	49
Stroke	0
Ischemic Heart Disease	31
Depression	23
Chronic Kidney Disease	22
Asthma	0
Osteoperosis	16
Atrial Fibrilation	12
Heart Failure	10
Chronic Obstructive Pulmonary Disease	8
Diabetes	26
Dementia	0
Cancer	22

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Maud L. Lemercier, MD treated as a general surgeon in Katonah, NY during 2021 were minimally invasive procedures, abdominal surgery and gastrointestinal procedures.

Volume of procedures performed by Dr. Maud L. Lemercier, MD for Medicare patients.

abdominal surgery	27
doctor visit	185
gastrointestinal procedures	27
minimally invasive procedures	27

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Maud L. Lemercier, MD.

**Gender**
Male	93
Female	82

**Ethnicity**
Non-Hispanic White	150
Black	0
Hispanic	0
Asian	0
Other	13
Native American	0

**Age**
From 65 to 74	91
From 75 to 84	51
85 and over	19
Less than 65	14

Conditions of Medicare patients treated by Dr. Maud L. Lemercier, MD in 2021

Hypertension	64
High Cholesterol	61
Stroke	0
Ischemic Heart Disease	32
Depression	22
Chronic Kidney Disease	26
Asthma	0
Osteoperosis	13
Atrial Fibrilation	13
Heart Failure	10
Chronic Obstructive Pulmonary Disease	14
Diabetes	20
Dementia	9
Cancer	17

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Maud L. Lemercier, MD treated as a general surgeon in Katonah, NY during 2022 were minimally invasive procedures, abdominal surgery, gastrointestinal procedures and catheterization.

Volume of procedures performed by Dr. Maud L. Lemercier, MD for Medicare patients.

abdominal surgery	22
catheterization	11
doctor visit	191
gastrointestinal procedures	22
minimally invasive procedures	22

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Maud L. Lemercier, MD.

**Gender**
Male	109
Female	77

**Ethnicity**
Non-Hispanic White	162
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

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

Conditions of Medicare patients treated by Dr. Maud L. Lemercier, MD in 2022

Hypertension	70
High Cholesterol	75
Stroke	9
Ischemic Heart Disease	30
Depression	22
Chronic Kidney Disease	24
Asthma	6
Osteoperosis	18
Atrial Fibrilation	18
Heart Failure	12
Chronic Obstructive Pulmonary Disease	11
Diabetes	20
Dementia	0
Cancer	23

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Maud L. Lemercier, MD for Medicare patients.

The highest averages for the top procedures that Dr. Maud L. Lemercier, MD treated as a general surgeon in Katonah, NY were hospital care, inpatient care, minimally invasive procedures and abdominal surgery.

abdominal surgery	16
blood draw	15
catheterization	11
doctor visit	199
gastrointestinal procedures	16
hospital care	35
inpatient care	35
minimally invasive procedures	16

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Maud L. Lemercier, MD.

**Gender**
Female	109
Male	88

**Ethnicity**
Black / African American	0
Asian / Pacific Islander	0
Non-Hispanic White	159
Native American / Alaskan Native	0
Hispanic	0
Other	2

**Age**
85 and over	28
75 to 84	69
Less than 65	15
65 to 74	81

Average of Total of Conditions of Medicare patients treated by Dr. Maud L. Lemercier, MD From 2012 - 2022

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

Hypertension	58
High Cholesterol	50
Stroke	2
Ischemic Heart Disease	29
Depression	19
Chronic Kidney Disease	22
Asthma	7
Osteoporosis	11
Heart Failure	13
Chronic Obstructive Pulmonary Disease	10
Diabetes	21
Atrial Fibrillation	13
Dementia	7
Cancer	19

Education & Training

She has a state license in New York.

Licensed In: New York

Ratings & Reviews

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General Payments

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

**Payments by Company**
Intuitive Surgical, Inc.	$1,075 Da Vinci Surgical System $1,075
Covidien Sales LLC	$205 Endo Stapling $205

**Types of Payments**
Food and Beverage	$724
Travel and Lodging	$556

Biography

Dr. Maud Lemercier's area of specialization is general surgery. She attended medical school at Temple University School of Medicine and Georgetown University School of Medicine. Dr. Lemercier's residency was performed at a hospital affiliated with the University of Connecticut. Awards and/or distinctions she has received include Surgeon of Excellence Designation by Surgical Review Corporation; Castle Connolly Top Doctor; and Westchester Magazine. She is professionally affiliated with Optum East, Ambulatory Surgery Center of Westchester (ASCW), and Northern Westchester Hospital (NWH). Dr. Lemercier's practice in Mount Kisco, NY is open to new patients as reported by Optum East.