In 2023, Dr. Timothy S. Mulder, MD performed more colonoscopy, colonoscopy with biopsy, and colonoscopy with lesion removal procedures for Medicare patients than 95% of providers in related specialties within Minnesota.

Top 10%

By Volume:

lab tests

In 2023, Dr. Timothy S. Mulder, MD performed more lab tests procedures for Medicare patients than 90% of providers in related specialties within Minnesota.

Top 25%

By Volume:

blood draw

complete blood count

endoscopy

gastrointestinal procedures

lipid profile

microalbumin urine test

phlebotomy for lab tests

prothrombin time test

screening test

thyroid blood test

In 2012, Dr. Timothy S. Mulder, MD performed more blood draw, complete blood count (CBC), endoscopy, gastrointestinal procedures, lipid profile, microalbumin urine test, phlebotomy for lab tests, prothrombin time (PT) test, screening test, and thyroid blood test procedures for Medicare patients than 75% of providers in related specialties within Minnesota.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Timothy S. Mulder, MD treated as a family medicine practitioner in Willmar, MN during 2012 were lab tests, blood draw, preventive care and vaccines.

Volume of procedures performed by Dr. Timothy S. Mulder, MD for Medicare patients.

aspiration	14
blood draw	247
diabetes management	45
doctor visit	624
injections	14
lab tests	663
preventive care	231
thyroid function tests	24
vaccines	79

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Timothy S. Mulder, MD treated as a family medicine practitioner in Willmar, MN during 2013 were lab tests, blood draw, preventive care and vaccines.

Volume of procedures performed by Dr. Timothy S. Mulder, MD for Medicare patients.

blood draw	255
diabetes management	47
doctor visit	598
lab tests	630
musculoskeletal imaging	11
preventive care	195
removal of lesion (e.g. growth)	20
skin procedures	20
thyroid function tests	18
vaccines	68
X-rays	11

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Timothy S. Mulder, MD.

**Gender**
Male	127
Female	92

**Ethnicity**
Non-Hispanic White	206
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	77
From 75 to 84	67
85 and over	34
Less than 65	41

Conditions of Medicare patients treated by Dr. Timothy S. Mulder, MD in 2013

Hypertension	67
High Cholesterol	44
Stroke	0
Ischemic Heart Disease	27
Depression	17
Chronic Kidney Disease	20
Asthma	0
Osteoperosis	5
Atrial Fibrilation	12
Heart Failure	14
Chronic Obstructive Pulmonary Disease	8
Diabetes	28
Dementia	10
Cancer	11

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Timothy S. Mulder, MD treated as a family medicine practitioner in Willmar, MN during 2014 were lab tests, blood draw, preventive care and diabetes management.

Volume of procedures performed by Dr. Timothy S. Mulder, MD for Medicare patients.

blood draw	247
diabetes management	54
diagnostic procedures	12
doctor visit	528
gastrointestinal procedures	12
lab tests	606
minimally invasive procedures	12
preventive care	173
removal of lesion (e.g. growth)	12
thyroid function tests	19
vaccines	31

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Timothy S. Mulder, MD.

**Gender**
Male	140
Female	82

**Ethnicity**
Non-Hispanic White	209
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	81
From 75 to 84	65
85 and over	33
Less than 65	43

Conditions of Medicare patients treated by Dr. Timothy S. Mulder, MD in 2014

Hypertension	54
High Cholesterol	32
Stroke	0
Ischemic Heart Disease	25
Depression	17
Chronic Kidney Disease	17
Asthma	0
Osteoperosis	0
Atrial Fibrilation	11
Heart Failure	16
Chronic Obstructive Pulmonary Disease	9
Diabetes	27
Dementia	7
Cancer	6

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Timothy S. Mulder, MD treated as a family medicine practitioner in Willmar, MN during 2015 were lab tests, blood draw, preventive care and diabetes management.

Volume of procedures performed by Dr. Timothy S. Mulder, MD for Medicare patients.

blood draw	209
diabetes management	47
diagnostic procedures	14
doctor visit	498
gastrointestinal procedures	14
lab tests	539
minimally invasive procedures	14
preventive care	145
removal of lesion (e.g. growth)	14
thyroid function tests	20
vaccines	34

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Timothy S. Mulder, MD.

**Gender**
Male	264
Female	178

**Ethnicity**
Non-Hispanic White	412
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	164
From 75 to 84	134
85 and over	56
Less than 65	88

Conditions of Medicare patients treated by Dr. Timothy S. Mulder, MD in 2015

Hypertension	50
High Cholesterol	34
Stroke	0
Ischemic Heart Disease	22
Depression	16
Chronic Kidney Disease	16
Asthma	9
Osteoperosis	0
Atrial Fibrilation	5
Heart Failure	12
Chronic Obstructive Pulmonary Disease	11
Diabetes	26
Dementia	5
Cancer	7

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Timothy S. Mulder, MD treated as a family medicine practitioner in Willmar, MN during 2016 were lab tests, preventive care, blood draw and vaccines.

Volume of procedures performed by Dr. Timothy S. Mulder, MD for Medicare patients.

blood draw	175
diabetes management	47
diagnostic procedures	17
doctor visit	397
gastrointestinal procedures	17
lab tests	482
minimally invasive procedures	17
preventive care	188
removal of lesion (e.g. growth)	17
thyroid function tests	22
vaccines	80

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Timothy S. Mulder, MD.

**Gender**
Male	110
Female	82

**Ethnicity**
Non-Hispanic White	177
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	60
From 75 to 84	71
85 and over	21
Less than 65	40

Conditions of Medicare patients treated by Dr. Timothy S. Mulder, MD in 2016

Hypertension	57
High Cholesterol	32
Stroke	0
Ischemic Heart Disease	23
Depression	15
Chronic Kidney Disease	18
Asthma	13
Osteoperosis	0
Atrial Fibrilation	13
Heart Failure	11
Chronic Obstructive Pulmonary Disease	10
Diabetes	24
Dementia	6
Cancer	6

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Timothy S. Mulder, MD treated as a family medicine practitioner in Willmar, MN during 2017 were lab tests, blood draw, preventive care and vaccines.

Volume of procedures performed by Dr. Timothy S. Mulder, MD for Medicare patients.

blood draw	170
diabetes management	42
doctor visit	450
lab tests	464
preventive care	152
thyroid function tests	22
vaccines	55

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Timothy S. Mulder, MD.

**Gender**
Male	107
Female	86

**Ethnicity**
Non-Hispanic White	176
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	57
From 75 to 84	69
85 and over	26
Less than 65	41

Conditions of Medicare patients treated by Dr. Timothy S. Mulder, MD in 2017

Hypertension	57
High Cholesterol	34
Stroke	0
Ischemic Heart Disease	23
Depression	17
Chronic Kidney Disease	18
Asthma	10
Osteoperosis	0
Atrial Fibrilation	12
Heart Failure	13
Chronic Obstructive Pulmonary Disease	11
Diabetes	24
Dementia	7
Cancer	9

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Timothy S. Mulder, MD treated as a family medicine practitioner in Willmar, MN during 2018 were lab tests, blood draw, preventive care and diabetes management.

Volume of procedures performed by Dr. Timothy S. Mulder, MD for Medicare patients.

blood draw	178
diabetes management	44
diagnostic procedures	22
doctor visit	478
gastrointestinal procedures	33
lab tests	470
minimally invasive procedures	33
preventive care	150
removal of lesion (e.g. growth)	22
thyroid function tests	15
vaccines	37

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Timothy S. Mulder, MD.

**Gender**
Male	114
Female	89

**Ethnicity**
Non-Hispanic White	183
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	70
From 75 to 84	67
85 and over	22
Less than 65	44

Conditions of Medicare patients treated by Dr. Timothy S. Mulder, MD in 2018

Hypertension	53
High Cholesterol	38
Stroke	0
Ischemic Heart Disease	23
Depression	21
Chronic Kidney Disease	20
Asthma	5
Osteoperosis	0
Atrial Fibrilation	12
Heart Failure	9
Chronic Obstructive Pulmonary Disease	10
Diabetes	26
Dementia	8
Cancer	6

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Timothy S. Mulder, MD treated as a family medicine practitioner in Willmar, MN during 2019 were lab tests, blood draw, preventive care and minimally invasive procedures.

Volume of procedures performed by Dr. Timothy S. Mulder, MD for Medicare patients.

blood draw	289
diabetes management	64
diagnostic procedures	66
doctor visit	748
gastrointestinal procedures	119
lab tests	908
minimally invasive procedures	119
preventive care	283
removal of lesion (e.g. growth)	66
thyroid function tests	66
vaccines	43

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Timothy S. Mulder, MD.

**Gender**
Male	245
Female	186

**Ethnicity**
Non-Hispanic White	396
Black	0
Hispanic	0
Asian	0
Other	19
Native American	0

**Age**
From 65 to 74	192
From 75 to 84	142
85 and over	44
Less than 65	53

Conditions of Medicare patients treated by Dr. Timothy S. Mulder, MD in 2019

Hypertension	53
High Cholesterol	38
Stroke	3
Ischemic Heart Disease	23
Depression	17
Chronic Kidney Disease	23
Asthma	5
Osteoperosis	4
Atrial Fibrilation	15
Heart Failure	12
Chronic Obstructive Pulmonary Disease	12
Diabetes	25
Dementia	5
Cancer	8

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Timothy S. Mulder, MD treated as a family medicine practitioner in Willmar, MN during 2020 were lab tests, preventive care, blood draw and minimally invasive procedures.

Volume of procedures performed by Dr. Timothy S. Mulder, MD for Medicare patients.

blood draw	207
diabetes management	43
diagnostic procedures	35
doctor visit	472
gastrointestinal procedures	63
lab tests	646
minimally invasive procedures	63
preventive care	219
removal of lesion (e.g. growth)	35
thyroid function tests	51
vaccines	62

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Timothy S. Mulder, MD.

**Gender**
Male	185
Female	138

**Ethnicity**
Non-Hispanic White	302
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	147
From 75 to 84	103
85 and over	37
Less than 65	36

Conditions of Medicare patients treated by Dr. Timothy S. Mulder, MD in 2020

Hypertension	53
High Cholesterol	43
Stroke	0
Ischemic Heart Disease	25
Depression	17
Chronic Kidney Disease	23
Asthma	7
Osteoperosis	4
Atrial Fibrilation	13
Heart Failure	9
Chronic Obstructive Pulmonary Disease	11
Diabetes	24
Dementia	6
Cancer	10

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Timothy S. Mulder, MD treated as a family medicine practitioner in Willmar, MN during 2021 were lab tests, preventive care, blood draw and gastrointestinal procedures.

Volume of procedures performed by Dr. Timothy S. Mulder, MD for Medicare patients.

blood draw	240
breast procedures	32
diabetes management	66
diagnostic procedures	87
doctor visit	615
gastrointestinal procedures	131
lab tests	703
minimally invasive procedures	131
preventive care	319
removal of lesion (e.g. growth)	87
thyroid function tests	58
vaccines	70
women's imaging	32
X-rays	32

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Timothy S. Mulder, MD.

**Gender**
Male	230
Female	173

**Ethnicity**
Non-Hispanic White	380
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	205
From 75 to 84	127
85 and over	36
Less than 65	35

Conditions of Medicare patients treated by Dr. Timothy S. Mulder, MD in 2021

Hypertension	57
High Cholesterol	47
Stroke	4
Ischemic Heart Disease	20
Depression	19
Chronic Kidney Disease	21
Asthma	6
Osteoperosis	5
Atrial Fibrilation	8
Heart Failure	10
Chronic Obstructive Pulmonary Disease	9
Diabetes	23
Dementia	7
Cancer	7

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Timothy S. Mulder, MD treated as a family medicine practitioner in Willmar, MN during 2022 were lab tests, blood draw, preventive care and minimally invasive procedures.

Volume of procedures performed by Dr. Timothy S. Mulder, MD for Medicare patients.

blood draw	217
breast procedures	27
diabetes management	55
diagnostic procedures	80
doctor visit	563
gastrointestinal procedures	109
lab tests	518
minimally invasive procedures	109
preventive care	209
removal of lesion (e.g. growth)	80
thyroid function tests	47
women's imaging	27
X-rays	27

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Timothy S. Mulder, MD.

**Gender**
Male	171
Female	151

**Ethnicity**
Non-Hispanic White	294
Black	0
Hispanic	0
Asian	0
Other	16
Native American	0

**Age**
From 65 to 74	145
From 75 to 84	103
85 and over	32
Less than 65	42

Conditions of Medicare patients treated by Dr. Timothy S. Mulder, MD in 2022

Hypertension	70
High Cholesterol	69
Stroke	4
Ischemic Heart Disease	19
Depression	21
Chronic Kidney Disease	19
Asthma	8
Osteoperosis	9
Atrial Fibrilation	17
Heart Failure	10
Chronic Obstructive Pulmonary Disease	13
Diabetes	28
Dementia	4
Cancer	10

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Timothy S. Mulder, MD for Medicare patients.

The highest averages for the top procedures that Dr. Timothy S. Mulder, MD treated as a family medicine practitioner in Willmar, MN were lab tests, blood draw, preventive care and gastrointestinal procedures.

aspiration	14
blood draw	221
breast procedures	29
diabetes management	50
diagnostic procedures	41
doctor visit	542
gastrointestinal procedures	62
injections	14
lab tests	602
minimally invasive procedures	62
musculoskeletal imaging	11
preventive care	205
removal of lesion (e.g. growth)	39
skin procedures	20
thyroid function tests	32
vaccines	55
women's imaging	29
X-rays	23

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Timothy S. Mulder, MD.

**Gender**
Female	114
Male	153

**Ethnicity**
Black / African American	0
Asian / Pacific Islander	0
Non-Hispanic White	248
Hispanic	0
Native American / Alaskan Native	0
Other	3

**Age**
85 and over	31
75 to 84	86
Less than 65	42
65 to 74	108

Average of Total of Conditions of Medicare patients treated by Dr. Timothy S. Mulder, MD From 2012 - 2022

The highest averages of the most common conditions of Medicare patients that Dr. Timothy S. Mulder, MD treated were hypertension, high cholesterol, diabetes and ischemic heart disease.

Hypertension	51
High Cholesterol	37
Stroke	1
Ischemic Heart Disease	20
Depression	16
Chronic Kidney Disease	17
Asthma	5
Osteoporosis	2
Heart Failure	10
Chronic Obstructive Pulmonary Disease	9
Diabetes	23
Atrial Fibrillation	10
Dementia	5
Cancer	7

Education & Training

He completed residency at University of South Dakota Affiliated Hospitals. He is certified by the American Board of Family Medicine and has a state license in Minnesota.

Residency: University of South Dakota Affiliated Hospitals

Board Certification: American Board of Family Medicine

Licensed In: Minnesota

Ratings & Reviews

Dr. Timothy S. Mulder, MD has an exceptional overall rating with an average of 5.0 out of 5 stars based on 3 ratings. We collect ratings and reviews of Dr. Timothy S. Mulder, MD from all over the web to help you find the right in Willmar, MN.

Overall Rating

(3 Ratings)

Leave a Review

Reviews From Around The Web

Overall Rating: 5.0 2025-06-05

Patient verified via Press Ganey

Always good, these people have saved my life on more than 1 occasion. By direct advice/treatment or referral for excellent care when needed.

Overall Rating: 5.0 2026-02-10

Patient verified via Press Ganey

Great physician to see. Very polite and attentive to medical condition and questions

Overall Rating: 5.0 2025-06-22

Patient verified via Press Ganey

Excellent advice/exercises

General Payments

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

**Payments by Company**
Seqirus USA Inc	$26 FLUCELVAX QUADRIVALENT (MULTI-DOSE VIAL) $26

**Types of Payments**
Food and Beverage	$26

Biography

Dr. Timothy Mulder sees patients in Willmar, MN. His medical specialty is family medicine. Before completing his residency at a hospital affiliated with the University of South Dakota, Dr. Mulder attended medical school at the University of South Dakota, Sanford School of Medicine. Patient reviews placed him at an average of 5.0 stars (out of 5). He welcomes new patients at his office inWillmar, MN as reported by Doctor.com.