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Home > WI Providers > Family Physicians & Family Medicine Specialists

Dr. Rachel Tara Joy Gronau, MD

Accepting New Patients

(23 Ratings)

Specializes in: Family Medicine

Medical College of Wisconsin (2005)

1038 E. Geneva Street
Delavan, WI 53115

(262) 728-4301

Dr. Rachel Tara Joy Gronau, MD is a family medicine practitioner in Delavan, WI specializing in family medicine. She graduated from Medical College of Wisconsin in 2005 and has 21 years of experience.

Office Locations

1038 E. Geneva Street
Delavan, WI 53115

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Noteworthy Medicare Patient Procedures Performed by Dr. Rachel Tara Joy Gronau, MD in 2023

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

Top 5%

By Volume:

Welcome to Medicare visit

In 2023, Dr. Rachel Tara Joy Gronau, MD performed more Welcome to Medicare visit (initial preventive physical exam) procedures for Medicare patients than 95% of providers in related specialties within Wisconsin.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Rachel Tara Joy Gronau, MD treated as a family medicine practitioner in Delavan, WI during 2012 were lab tests, blood draw, preventive care and thyroid function tests.

Volume of procedures performed by Dr. Rachel Tara Joy Gronau, MD for Medicare patients.

blood draw	211
diabetes management	43
doctor visit	525
lab tests	419
preventive care	96
thyroid function tests	61

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

Volume of procedures performed by Dr. Rachel Tara Joy Gronau, MD for Medicare patients.

doctor visit	537

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Rachel Tara Joy Gronau, MD.

**Gender**
Male	71
Female	170

**Ethnicity**
Non-Hispanic White	221
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	102
From 75 to 84	59
85 and over	22
Less than 65	58

Conditions of Medicare patients treated by Dr. Rachel Tara Joy Gronau, MD in 2013

Hypertension	54
High Cholesterol	37
Stroke	0
Ischemic Heart Disease	19
Depression	19
Chronic Kidney Disease	14
Asthma	0
Osteoperosis	6
Atrial Fibrilation	5
Heart Failure	9
Chronic Obstructive Pulmonary Disease	10
Diabetes	26
Dementia	6
Cancer	7

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Rachel Tara Joy Gronau, MD treated as a family medicine practitioner in Delavan, WI during 2014 were aspiration and injections.

Volume of procedures performed by Dr. Rachel Tara Joy Gronau, MD for Medicare patients.

aspiration	14
doctor visit	520
injections	14

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Rachel Tara Joy Gronau, MD.

**Gender**
Male	65
Female	188

**Ethnicity**
Non-Hispanic White	230
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	116
From 75 to 84	52
85 and over	26
Less than 65	59

Conditions of Medicare patients treated by Dr. Rachel Tara Joy Gronau, MD in 2014

Hypertension	55
High Cholesterol	47
Stroke	0
Ischemic Heart Disease	18
Depression	18
Chronic Kidney Disease	15
Asthma	6
Osteoperosis	7
Atrial Fibrilation	5
Heart Failure	8
Chronic Obstructive Pulmonary Disease	13
Diabetes	27
Dementia	6
Cancer	8

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Rachel Tara Joy Gronau, MD treated as a family medicine practitioner in Delavan, WI during 2015 were blood draw and lab tests.

Volume of procedures performed by Dr. Rachel Tara Joy Gronau, MD for Medicare patients.

blood draw	15
doctor visit	518
lab tests	11

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Rachel Tara Joy Gronau, MD.

**Gender**
Male	138
Female	416

**Ethnicity**
Non-Hispanic White	496
Black	0
Hispanic	34
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	280
From 75 to 84	104
85 and over	56
Less than 65	114

Conditions of Medicare patients treated by Dr. Rachel Tara Joy Gronau, MD in 2015

Hypertension	57
High Cholesterol	45
Stroke	0
Ischemic Heart Disease	14
Depression	14
Chronic Kidney Disease	17
Asthma	9
Osteoperosis	9
Atrial Fibrilation	6
Heart Failure	7
Chronic Obstructive Pulmonary Disease	12
Diabetes	24
Dementia	0
Cancer	7

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Rachel Tara Joy Gronau, MD treated as a family medicine practitioner in Delavan, WI during 2016 were aspiration, injections and preventive care.

Volume of procedures performed by Dr. Rachel Tara Joy Gronau, MD for Medicare patients.

aspiration	14
doctor visit	532
injections	14
preventive care	13

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Rachel Tara Joy Gronau, MD.

**Gender**
Male	62
Female	235

**Ethnicity**
Non-Hispanic White	272
Black	0
Hispanic	14
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	139
From 75 to 84	69
85 and over	34
Less than 65	55

Conditions of Medicare patients treated by Dr. Rachel Tara Joy Gronau, MD in 2016

Hypertension	55
High Cholesterol	35
Stroke	0
Ischemic Heart Disease	15
Depression	17
Chronic Kidney Disease	22
Asthma	13
Osteoperosis	10
Atrial Fibrilation	6
Heart Failure	8
Chronic Obstructive Pulmonary Disease	10
Diabetes	23
Dementia	4
Cancer	9

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

Volume of procedures performed by Dr. Rachel Tara Joy Gronau, MD for Medicare patients.

doctor visit	504

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Rachel Tara Joy Gronau, MD.

**Gender**
Male	70
Female	237

**Ethnicity**
Non-Hispanic White	281
Black	0
Hispanic	12
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	165
From 75 to 84	55
85 and over	31
Less than 65	56

Conditions of Medicare patients treated by Dr. Rachel Tara Joy Gronau, MD in 2017

Hypertension	53
High Cholesterol	17
Stroke	0
Ischemic Heart Disease	17
Depression	19
Chronic Kidney Disease	22
Asthma	5
Osteoperosis	8
Atrial Fibrilation	8
Heart Failure	9
Chronic Obstructive Pulmonary Disease	11
Diabetes	22
Dementia	5
Cancer	10

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Rachel Tara Joy Gronau, MD treated as a family medicine practitioner in Delavan, WI during 2018 were blood draw and preventive care.

Volume of procedures performed by Dr. Rachel Tara Joy Gronau, MD for Medicare patients.

blood draw	238
doctor visit	530
preventive care	14

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Rachel Tara Joy Gronau, MD.

**Gender**
Male	60
Female	260

**Ethnicity**
Non-Hispanic White	294
Black	0
Hispanic	12
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	179
From 75 to 84	69
85 and over	28
Less than 65	44

Conditions of Medicare patients treated by Dr. Rachel Tara Joy Gronau, MD in 2018

Hypertension	52
High Cholesterol	35
Stroke	4
Ischemic Heart Disease	18
Depression	18
Chronic Kidney Disease	22
Asthma	8
Osteoperosis	11
Atrial Fibrilation	10
Heart Failure	13
Chronic Obstructive Pulmonary Disease	11
Diabetes	22
Dementia	5
Cancer	9

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Rachel Tara Joy Gronau, MD treated as a family medicine practitioner in Delavan, WI during 2019 were blood draw and preventive care.

Volume of procedures performed by Dr. Rachel Tara Joy Gronau, MD for Medicare patients.

blood draw	54
doctor visit	458
preventive care	23

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Rachel Tara Joy Gronau, MD.

**Gender**
Male	70
Female	265

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

**Age**
From 65 to 74	192
From 75 to 84	67
85 and over	34
Less than 65	42

Conditions of Medicare patients treated by Dr. Rachel Tara Joy Gronau, MD in 2019

Hypertension	54
High Cholesterol	43
Stroke	0
Ischemic Heart Disease	15
Depression	18
Chronic Kidney Disease	24
Asthma	10
Osteoperosis	13
Atrial Fibrilation	8
Heart Failure	11
Chronic Obstructive Pulmonary Disease	12
Diabetes	21
Dementia	7
Cancer	8

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Rachel Tara Joy Gronau, MD treated as a family medicine practitioner in Delavan, WI during 2020 were preventive care.

Volume of procedures performed by Dr. Rachel Tara Joy Gronau, MD for Medicare patients.

doctor visit	412
preventive care	18

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Rachel Tara Joy Gronau, MD.

**Gender**
Male	68
Female	274

**Ethnicity**
Non-Hispanic White	314
Black	0
Hispanic	12
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	202
From 75 to 84	76
85 and over	28
Less than 65	36

Conditions of Medicare patients treated by Dr. Rachel Tara Joy Gronau, MD in 2020

Hypertension	54
High Cholesterol	42
Stroke	4
Ischemic Heart Disease	15
Depression	18
Chronic Kidney Disease	25
Asthma	8
Osteoperosis	11
Atrial Fibrilation	10
Heart Failure	9
Chronic Obstructive Pulmonary Disease	10
Diabetes	21
Dementia	6
Cancer	7

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Rachel Tara Joy Gronau, MD treated as a family medicine practitioner in Delavan, WI during 2021 were blood draw and preventive care.

Volume of procedures performed by Dr. Rachel Tara Joy Gronau, MD for Medicare patients.

blood draw	17
doctor visit	540
preventive care	14

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Rachel Tara Joy Gronau, MD.

**Gender**
Male	68
Female	278

**Ethnicity**
Non-Hispanic White	320
Black	0
Hispanic	11
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	203
From 75 to 84	87
85 and over	30
Less than 65	26

Conditions of Medicare patients treated by Dr. Rachel Tara Joy Gronau, MD in 2021

Hypertension	57
High Cholesterol	51
Stroke	3
Ischemic Heart Disease	18
Depression	19
Chronic Kidney Disease	23
Asthma	8
Osteoperosis	11
Atrial Fibrilation	8
Heart Failure	11
Chronic Obstructive Pulmonary Disease	10
Diabetes	20
Dementia	5
Cancer	9

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Rachel Tara Joy Gronau, MD treated as a family medicine practitioner in Delavan, WI during 2022 were preventive care.

Volume of procedures performed by Dr. Rachel Tara Joy Gronau, MD for Medicare patients.

doctor visit	484
preventive care	17

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Rachel Tara Joy Gronau, MD.

**Gender**
Male	56
Female	274

**Ethnicity**
Non-Hispanic White	303
Black	0
Hispanic	0
Asian	0
Other	13
Native American	0

**Age**
From 65 to 74	196
From 75 to 84	89
85 and over	26
Less than 65	19

Conditions of Medicare patients treated by Dr. Rachel Tara Joy Gronau, MD in 2022

Hypertension	66
High Cholesterol	62
Stroke	5
Ischemic Heart Disease	15
Depression	13
Chronic Kidney Disease	20
Asthma	10
Osteoperosis	17
Atrial Fibrilation	12
Heart Failure	11
Chronic Obstructive Pulmonary Disease	12
Diabetes	20
Dementia	4
Cancer	10

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

The top procedures that Dr. Rachel Tara Joy Gronau, MD treated as a family medicine practitioner in Delavan, WI during 2023 were preventive care.

Volume of procedures performed by Dr. Rachel Tara Joy Gronau, MD for Medicare patients.

doctor visit	534
preventive care	22

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. Rachel Tara Joy Gronau, MD.

**Gender**
Male	69
Female	298

**Ethnicity**
Non-Hispanic White	344
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	198
From 75 to 84	109
85 and over	39
Less than 65	21

Conditions of Medicare patients treated by Dr. Rachel Tara Joy Gronau, MD in 2023

Hypertension	68
High Cholesterol	66
Stroke	6
Ischemic Heart Disease	14
Depression	14
Chronic Kidney Disease	19
Asthma	8
Osteoperosis	13
Atrial Fibrilation	14
Heart Failure	13
Chronic Obstructive Pulmonary Disease	11
Diabetes	22
Dementia	6
Cancer	11

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2023

Volume of procedures performed by Dr. Rachel Tara Joy Gronau, MD for Medicare patients.

The highest averages for the top procedures that Dr. Rachel Tara Joy Gronau, MD treated as a family medicine practitioner in Delavan, WI were lab tests, blood draw, thyroid function tests and diabetes management.

aspiration	14
blood draw	107
diabetes management	43
doctor visit	507
injections	14
lab tests	215
preventive care	27
thyroid function tests	61

Average Medicare Patient Data From 2012 - 2023

Information about Medicare patients treated by Dr. Rachel Tara Joy Gronau, MD.

**Gender**
Female	241
Male	66

**Ethnicity**
Black / African American	0
Asian / Pacific Islander	0
Non-Hispanic White	282
Hispanic	7
Native American / Alaskan Native	0
Other	2

**Age**
85 and over	29
75 to 84	69
Less than 65	44
65 to 74	164

Average of Total of Conditions of Medicare patients treated by Dr. Rachel Tara Joy Gronau, MD From 2012 - 2023

The highest averages of the most common conditions of Medicare patients that Dr. Rachel Tara Joy Gronau, MD treated were hypertension, high cholesterol, diabetes and chronic kidney disease.

Hypertension	52
High Cholesterol	40
Stroke	1
Ischemic Heart Disease	14
Depression	15
Chronic Kidney Disease	18
Asthma	7
Osteoporosis	9
Heart Failure	9
Chronic Obstructive Pulmonary Disease	10
Diabetes	20
Atrial Fibrillation	7
Dementia	4
Cancer	7

Education & Training

Dr. Rachel Tara Joy Gronau, MD graduated from Medical College of Wisconsin in 2005. She completed residency at Aurora St. Luke's Medical Center, Milwaukee. She is certified by the American Board of Family Medicine and has a state license in Wisconsin.

Medical School: Medical College of Wisconsin (2005)

Residency: Aurora St. Luke's Medical Center, Milwaukee

Board Certification: American Board of Family Medicine

Licensed In: Wisconsin

Ratings & Reviews

Dr. Rachel Tara Joy Gronau, MD has an exceptional overall rating with an average of 5.0 out of 5 stars based on 23 ratings. We collect ratings and reviews of Dr. Rachel Tara Joy Gronau, MD from all over the web to help you find the right in Delavan, WI.

Overall Rating

(23 Ratings)

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Reviews From Around The Web

Overall Rating: 5.0 2024-07-14

Patient verified via Press Ganey

This was my 1st visit to Dr. Gronau. She had familiarized herself with my history and listened to my concerns. She made some suggestions regarding my medications and informed me of her reasons for the changes and I agreed to them. She was very professional and took the time to explain everything to me. She will be following up with me in 2 weeks to see how I am tolerating the new med and we will do addional blood work in a month. I liked her very much.

Overall Rating: 5.0 2026-03-23

Patient verified via Press Ganey

Dr Gronau is unique in that she actually listens to her patients concerns, and addresses them directly. She gives understandable explanations. She provides options and thoroughly explains pros and cons of each. She is truly an exceptional doctor. I never feel like I am taking too much of her time or that she is in a hurry to get on to the next patient. She does this, yet still manages to stay on schedule. She truly is a gem.

Overall Rating: 5.0 2026-02-07

Patient verified via Press Ganey

Doctor Gronau has been our Doctor for years and has done everything she can to support our health journey.

Overall Rating: 5.0 2025-01-20

Patient verified via Press Ganey

Love Dr Gronou - would recommend her to anyone looking for a primary care physician

Overall Rating: 5.0 2026-02-22

Patient verified via Press Ganey

Dr. Gronau has always been very attentive. I continue to see her because of this.

Overall Rating: 5.0 2024-10-19

Patient verified via Press Ganey

Dr. Gronau has been wonderful and helped me so much with my diabetes.

Overall Rating: 5.0 2024-03-21

Patient verified via Press Ganey

Staff is great. Dr Gronau listens to my concerns and is very helpful.

Overall Rating: 5.0 2024-08-18

Patient verified via Press Ganey

I love Dr. Groneau, she's thorough, and she listens.

Overall Rating: 5.0 2025-04-23

Patient verified via Press Ganey

Dr. Gronau is the reason I come to Mercy.

Overall Rating: 5.0 2026-01-30

Patient verified via Press Ganey

I felt more cared for than ever before.

To see all 23 reviews for Dr. Rachel Tara Joy Gronau, MD, view their full profile.

General Payments

These charts describe general payments received by Dr. Rachel Tara Joy Gronau, MD. Doctors may receive payments for a number of reasons, including meal compensation, travel compensation, and consulting.

**Payments by Company**
Medtronic USA, Inc.	$91 INTERSTIM $91
Boehringer Ingelheim Pharmaceuticals, Inc.	$34 Spiriva $21	SPIRIVA RESPIMAT $13
GlaxoSmithKline, LLC.	$29 Menveo $15	BREO $15
FOREST PHARMACEUTICALS, INC.	$23 VIIBRYD $23
Astellas Pharma US Inc	$16 Vesicare $16
Other	$24 Tresiba $12	$12

**Types of Payments**
Food and Beverage	$205
Education	$12

Biography

Dr. Rachel Gronau is a physician who specializes in family medicine. Dr. Gronau's average rating from her patients is 5.0 stars (out of 5). After attending Medical College of Wisconsin for medical school, she completed her residency training at Aurora St. Luke's Medical Center, Milwaukee. According to Doctor.com, she is currently accepting new patients at her office in Delavan, WI.

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Dr. Rachel Tara Joy Gronau, MD

Office Locations

Noteworthy Medicare Patient Procedures Performed by Dr. Rachel Tara Joy Gronau, MD in 2023

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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. Rachel Tara Joy Gronau, MD in 2013

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

2014 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Rachel Tara Joy Gronau, MD in 2014

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

2015 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Rachel Tara Joy Gronau, MD in 2015

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

2016 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Rachel Tara Joy Gronau, MD in 2016

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

2017 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Rachel Tara Joy Gronau, MD in 2017

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

2018 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Rachel Tara Joy Gronau, MD in 2018

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

2019 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Rachel Tara Joy Gronau, MD in 2019

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

2020 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Rachel Tara Joy Gronau, MD in 2020

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

2021 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Rachel Tara Joy Gronau, MD in 2021

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

2022 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Rachel Tara Joy Gronau, MD in 2022

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

2023 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Rachel Tara Joy Gronau, 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. Rachel Tara Joy Gronau, MD From 2012 - 2023

Education & Training

Ratings & Reviews

General Payments

Biography

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