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Home > WI Providers

Dr. Marie A. Tomasi, MD

Accepting New Patients

(8 Ratings)

Specializes in: Neurology (Brain & Spinal Cord Disease)

Medical College of Wisconsin (1997)

1205 O DAY STREET
MERRILL, WI 54452

(715) 539-0101

Dr. Marie A. Tomasi, MD is a neurologist in MERRILL, WI specializing in neurology (brain & spinal cord disease). She graduated from Medical College of Wisconsin in 1997 and has 29 years of experience.

Office Locations

1205 O DAY STREET
MERRILL, WI 54452

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2727 Plaza Drive
Wausau, WI 54401

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3400 MINISTRY PARKWAY
WESTON, WI 54476

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

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Marie A. Tomasi, MD treated as a neurologist in MERRILL, WI during 2012 were hospital care, inpatient care, diagnostic procedures and electroencephalography (EEG).

Volume of procedures performed by Dr. Marie A. Tomasi, MD for Medicare patients.

diagnostic procedures	135
doctor visit	364
electroencephalography (EEG)	26
hospital care	169
inpatient care	169

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Marie A. Tomasi, MD treated as a neurologist in MERRILL, WI during 2013 were hospital care, inpatient care, electroencephalography (EEG) and diagnostic procedures.

Volume of procedures performed by Dr. Marie A. Tomasi, MD for Medicare patients.

diagnostic procedures	11
doctor visit	416
electroencephalography (EEG)	17
hospital care	184
inpatient care	184

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Marie A. Tomasi, MD.

**Gender**
Male	109
Female	196

**Ethnicity**
Non-Hispanic White	285
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	92
From 75 to 84	79
85 and over	35
Less than 65	99

Conditions of Medicare patients treated by Dr. Marie A. Tomasi, MD in 2013

Hypertension	61
High Cholesterol	62
Stroke	13
Ischemic Heart Disease	33
Depression	37
Chronic Kidney Disease	35
Asthma	9
Osteoperosis	13
Atrial Fibrilation	13
Heart Failure	20
Chronic Obstructive Pulmonary Disease	16
Diabetes	27
Dementia	23
Cancer	9

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Marie A. Tomasi, MD treated as a neurologist in MERRILL, WI during 2014 were hospital care, inpatient care, blood draw and evoked potential test.

Volume of procedures performed by Dr. Marie A. Tomasi, MD for Medicare patients.

blood draw	47
doctor visit	408
electroencephalography (EEG)	11
evoked potential test	28
hospital care	151
inpatient care	151
lab tests	12

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Marie A. Tomasi, MD.

**Gender**
Male	114
Female	179

**Ethnicity**
Non-Hispanic White	280
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	108
From 75 to 84	62
85 and over	30
Less than 65	93

Conditions of Medicare patients treated by Dr. Marie A. Tomasi, MD in 2014

Hypertension	61
High Cholesterol	56
Stroke	11
Ischemic Heart Disease	36
Depression	37
Chronic Kidney Disease	33
Asthma	8
Osteoperosis	11
Atrial Fibrilation	9
Heart Failure	19
Chronic Obstructive Pulmonary Disease	16
Diabetes	26
Dementia	17
Cancer	10

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Marie A. Tomasi, MD treated as a neurologist in MERRILL, WI during 2015 were hospital care, inpatient care, blood draw and lab tests.

Volume of procedures performed by Dr. Marie A. Tomasi, MD for Medicare patients.

blood draw	40
diagnostic procedures	30
doctor visit	391
electroencephalography (EEG)	14
evoked potential test	31
hospital care	207
inpatient care	207
lab tests	32

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Marie A. Tomasi, MD.

**Gender**
Male	292
Female	388

**Age**
From 65 to 74	224
From 75 to 84	186
85 and over	56
Less than 65	214

Conditions of Medicare patients treated by Dr. Marie A. Tomasi, MD in 2015

Hypertension	66
High Cholesterol	61
Stroke	11
Ischemic Heart Disease	39
Depression	40
Chronic Kidney Disease	36
Asthma	12
Osteoperosis	12
Atrial Fibrilation	12
Heart Failure	24
Chronic Obstructive Pulmonary Disease	17
Diabetes	31
Dementia	19
Cancer	8

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Marie A. Tomasi, MD treated as a neurologist in MERRILL, WI during 2016 were hospital care, inpatient care, blood draw and lab tests.

Volume of procedures performed by Dr. Marie A. Tomasi, MD for Medicare patients.

blood draw	53
doctor visit	361
electroencephalography (EEG)	13
evoked potential test	37
hospital care	173
inpatient care	173
lab tests	39

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Marie A. Tomasi, MD.

**Gender**
Male	152
Female	178

**Ethnicity**
Non-Hispanic White	311
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	126
From 75 to 84	82
85 and over	19
Less than 65	103

Conditions of Medicare patients treated by Dr. Marie A. Tomasi, MD in 2016

Hypertension	66
High Cholesterol	55
Stroke	9
Ischemic Heart Disease	35
Depression	35
Chronic Kidney Disease	36
Asthma	20
Osteoperosis	11
Atrial Fibrilation	15
Heart Failure	20
Chronic Obstructive Pulmonary Disease	16
Diabetes	24
Dementia	18
Cancer	8

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Marie A. Tomasi, MD treated as a neurologist in MERRILL, WI during 2017 were hospital care, inpatient care, blood draw and lab tests.

Volume of procedures performed by Dr. Marie A. Tomasi, MD for Medicare patients.

blood draw	53
diagnostic procedures	12
doctor visit	347
evoked potential test	26
hospital care	126
inpatient care	126
lab tests	51

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Marie A. Tomasi, MD.

**Gender**
Male	118
Female	188

**Ethnicity**
Non-Hispanic White	290
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	115
From 75 to 84	76
85 and over	27
Less than 65	88

Conditions of Medicare patients treated by Dr. Marie A. Tomasi, MD in 2017

Hypertension	64
High Cholesterol	50
Stroke	13
Ischemic Heart Disease	36
Depression	37
Chronic Kidney Disease	39
Asthma	8
Osteoperosis	12
Atrial Fibrilation	12
Heart Failure	23
Chronic Obstructive Pulmonary Disease	15
Diabetes	25
Dementia	18
Cancer	9

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Marie A. Tomasi, MD treated as a neurologist in MERRILL, WI during 2018 were hospital care, inpatient care, lab tests and blood draw.

Volume of procedures performed by Dr. Marie A. Tomasi, MD for Medicare patients.

blood draw	44
diagnostic procedures	12
doctor visit	325
hospital care	114
inpatient care	114
lab tests	57
thyroid function tests	11

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Marie A. Tomasi, MD.

**Gender**
Male	112
Female	183

**Ethnicity**
Non-Hispanic White	284
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	103
From 75 to 84	81
85 and over	23
Less than 65	88

Conditions of Medicare patients treated by Dr. Marie A. Tomasi, MD in 2018

Hypertension	61
High Cholesterol	56
Stroke	10
Ischemic Heart Disease	37
Depression	41
Chronic Kidney Disease	36
Asthma	7
Osteoperosis	11
Atrial Fibrilation	15
Heart Failure	22
Chronic Obstructive Pulmonary Disease	13
Diabetes	29
Dementia	19
Cancer	10

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Marie A. Tomasi, MD treated as a neurologist in MERRILL, WI during 2019 were hospital care, inpatient care, diagnostic procedures and lab tests.

Volume of procedures performed by Dr. Marie A. Tomasi, MD for Medicare patients.

blood draw	37
diagnostic procedures	51
doctor visit	365
electroencephalography (EEG)	38
hospital care	111
inpatient care	111
lab tests	42

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Marie A. Tomasi, MD.

**Gender**
Male	132
Female	200

**Ethnicity**
Non-Hispanic White	312
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	119
From 75 to 84	88
85 and over	31
Less than 65	94

Conditions of Medicare patients treated by Dr. Marie A. Tomasi, MD in 2019

Hypertension	64
High Cholesterol	60
Stroke	11
Ischemic Heart Disease	39
Depression	39
Chronic Kidney Disease	37
Asthma	6
Osteoperosis	12
Atrial Fibrilation	12
Heart Failure	23
Chronic Obstructive Pulmonary Disease	14
Diabetes	27
Dementia	22
Cancer	9

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Marie A. Tomasi, MD treated as a neurologist in MERRILL, WI during 2020 were hospital care, inpatient care, lab tests and blood draw.

Volume of procedures performed by Dr. Marie A. Tomasi, MD for Medicare patients.

blood draw	49
diagnostic procedures	13
doctor visit	273
electroencephalography (EEG)	20
hospital care	148
inpatient care	148
lab tests	55

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Marie A. Tomasi, MD.

**Gender**
Male	139
Female	187

**Ethnicity**
Non-Hispanic White	308
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	123
From 75 to 84	83
85 and over	35
Less than 65	85

Conditions of Medicare patients treated by Dr. Marie A. Tomasi, MD in 2020

Hypertension	58
High Cholesterol	52
Stroke	7
Ischemic Heart Disease	36
Depression	33
Chronic Kidney Disease	36
Asthma	5
Osteoperosis	11
Atrial Fibrilation	13
Heart Failure	22
Chronic Obstructive Pulmonary Disease	13
Diabetes	27
Dementia	24
Cancer	8

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Marie A. Tomasi, MD treated as a neurologist in MERRILL, WI during 2021 were hospital care, inpatient care, blood draw and electroencephalography (EEG).

Volume of procedures performed by Dr. Marie A. Tomasi, MD for Medicare patients.

blood draw	43
diagnostic procedures	12
doctor visit	276
electroencephalography (EEG)	41
hospital care	151
inpatient care	151
lab tests	39

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Marie A. Tomasi, MD.

**Gender**
Male	124
Female	209

**Ethnicity**
Non-Hispanic White	310
Black	0
Hispanic	0
Asian	0
Other	12
Native American	0

**Age**
From 65 to 74	121
From 75 to 84	89
85 and over	41
Less than 65	82

Conditions of Medicare patients treated by Dr. Marie A. Tomasi, MD in 2021

Hypertension	64
High Cholesterol	57
Stroke	14
Ischemic Heart Disease	35
Depression	35
Chronic Kidney Disease	36
Asthma	7
Osteoperosis	10
Atrial Fibrilation	14
Heart Failure	26
Chronic Obstructive Pulmonary Disease	14
Diabetes	25
Dementia	24
Cancer	8

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Marie A. Tomasi, MD treated as a neurologist in MERRILL, WI during 2022 were hospital care, inpatient care, electroencephalography (EEG) and blood draw.

Volume of procedures performed by Dr. Marie A. Tomasi, MD for Medicare patients.

blood draw	35
diagnostic procedures	33
doctor visit	208
electroencephalography (EEG)	40
hospital care	170
inpatient care	170

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Marie A. Tomasi, MD.

**Gender**
Male	121
Female	202

**Ethnicity**
Non-Hispanic White	308
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	135
From 75 to 84	82
85 and over	26
Less than 65	80

Conditions of Medicare patients treated by Dr. Marie A. Tomasi, MD in 2022

Hypertension	71
High Cholesterol	69
Stroke	19
Ischemic Heart Disease	27
Depression	28
Chronic Kidney Disease	27
Asthma	13
Osteoperosis	16
Atrial Fibrilation	21
Heart Failure	22
Chronic Obstructive Pulmonary Disease	15
Diabetes	29
Dementia	15
Cancer	13

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

The top procedures that Dr. Marie A. Tomasi, MD treated as a neurologist in MERRILL, WI during 2023 were hospital care, inpatient care, electroencephalography (EEG) and diagnostic procedures.

Volume of procedures performed by Dr. Marie A. Tomasi, MD for Medicare patients.

diagnostic procedures	32
doctor visit	208
electroencephalography (EEG)	37
hospital care	174
inpatient care	174

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. Marie A. Tomasi, MD.

**Gender**
Male	118
Female	159

**Ethnicity**
Non-Hispanic White	258
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	111
From 75 to 84	80
85 and over	30
Less than 65	56

Conditions of Medicare patients treated by Dr. Marie A. Tomasi, MD in 2023

Hypertension	75
High Cholesterol	71
Stroke	23
Ischemic Heart Disease	30
Depression	25
Chronic Kidney Disease	29
Asthma	13
Osteoperosis	16
Atrial Fibrilation	20
Heart Failure	20
Chronic Obstructive Pulmonary Disease	16
Diabetes	31
Dementia	17
Cancer	14

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2023

Volume of procedures performed by Dr. Marie A. Tomasi, MD for Medicare patients.

The highest averages for the top procedures that Dr. Marie A. Tomasi, MD treated as a neurologist in MERRILL, WI were hospital care, inpatient care, blood draw and lab tests.

blood draw	44
diagnostic procedures	34
doctor visit	328
electroencephalography (EEG)	25
evoked potential test	30
hospital care	156
inpatient care	156
lab tests	40
thyroid function tests	11

Average Medicare Patient Data From 2012 - 2023

Information about Medicare patients treated by Dr. Marie A. Tomasi, MD.

**Gender**
Male	127
Female	189

**Ethnicity**
Black / African American	0
Asian / Pacific Islander	0
Non-Hispanic White	245
Hispanic	0
Native American / Alaskan Native	0
Other	1

**Age**
75 to 84	82
85 and over	29
Less than 65	90
65 to 74	114

Average of Total of Conditions of Medicare patients treated by Dr. Marie A. Tomasi, MD From 2012 - 2023

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

Hypertension	59
High Cholesterol	54
Stroke	11
Ischemic Heart Disease	31
Depression	32
Chronic Kidney Disease	31
Asthma	9
Osteoporosis	11
Heart Failure	20
Chronic Obstructive Pulmonary Disease	13
Diabetes	25
Atrial Fibrillation	13
Cancer	8
Dementia	18

Education & Training

Dr. Marie A. Tomasi, MD graduated from Medical College of Wisconsin in 1997. She has a state license in Wisconsin.

Medical School: Medical College of Wisconsin (1997)

Licensed In: Wisconsin

Ratings & Reviews

Dr. Marie A. Tomasi, MD has an exceptional overall rating with an average of 5.0 out of 5 stars based on 8 ratings. We collect ratings and reviews of Dr. Marie A. Tomasi, MD from all over the web to help you find the right in MERRILL, WI.

Overall Rating

(8 Ratings)

Leave a Review

Reviews From Around The Web

Overall Rating: 5.0 2025-06-30

Patient verified via Press Ganey

Dr Tomasi always takes the time to answer our questions and address any concerns we have. She is definitely in practice for her patients well being and goes the extra to listen to and help them.

Overall Rating: 5.0 2025-07-01

Patient verified via Press Ganey

I can't imagine not having Dr. Tomasi supporting and caring for me. We talk in depth, always is on top of my issues and concerns and ready with ideas to help me.

Overall Rating: 5.0 2026-03-12

Patient verified via Press Ganey

Dr. Tomasi was absolutely incredible! She took the time to listen and explain every concern I had, and what options we had to figure out/take care of them

Overall Rating: 5.0 2025-09-18

Patient verified via Press Ganey

Dr Tomasi is very thorough and does an intensive history intake. She is outstanding

Overall Rating: 5.0 2025-09-26

Patient verified via Press Ganey

Highly recommend her!

Overall Rating: 5.0 2024-02-29

Patient verified via Press Ganey

Dr. Tomasi was great!

Overall Rating: 5.0 2024-12-17

Patient verified via Press Ganey

Great job!

Overall Rating: 5.0 2025-08-01

Patient verified via Press Ganey

Good

General Payments

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

**Payments by Company**
Supernus Pharmaceuticals, Inc.	$177 $177
Biogen Idec Inc.	$164 AVONEX $122	TYSABRI $42
Biogen, Inc.	$142 TECFIDERA $142
UCB, Inc.	$60 Neupro $60

**Types of Payments**
Food and Beverage	$405
Education	$139

Biography

Dr. Marie Tomasi's area of specialization is neurology (brain & spinal cord disease). On average, patients gave her a rating of 5.0 stars (out of 5). She obtained her medical school training at Medical College of Wisconsin and performed her residency at Rush University Medical Center. Dr. Tomasi is professionally affiliated with Marshfield Clinic Health System. Dr. Tomasi welcomes new patients at her office inWausau, WI as reported by Doctor.com.

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Dr. Marie A. Tomasi, MD

Office Locations

Noteworthy Medicare Patient Procedures Performed by Dr. Marie A. Tomasi, MD in 2023

By Volume:

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. Marie A. Tomasi, MD in 2013

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

2014 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Marie A. Tomasi, MD in 2014

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

2015 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Marie A. Tomasi, MD in 2015

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

2016 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Marie A. Tomasi, MD in 2016

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

2017 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Marie A. Tomasi, MD in 2017

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

2018 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Marie A. Tomasi, MD in 2018

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

2019 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Marie A. Tomasi, MD in 2019

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

2020 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Marie A. Tomasi, MD in 2020

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

2021 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Marie A. Tomasi, MD in 2021

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

2022 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Marie A. Tomasi, MD in 2022

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

2023 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Marie A. Tomasi, MD in 2023

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2023

Average Medicare Patient Data From 2012 - 2023

Average of Total of Conditions of Medicare patients treated by Dr. Marie A. Tomasi, MD From 2012 - 2023

Education & Training

Ratings & Reviews

General Payments

Biography

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