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Dr. David J. Knudtson, MD, FACP

(139 Ratings)

Specializes in: Internal Medicine (Adult Medicine)

Medical College of Wisconsin

6635 Hillway Circle Suite 400
Naples, FL 34112

(239) 455-9550

Dr. David J. Knudtson, MD, FACP is an internist in Northfield, IL specializing in internal medicine (adult medicine). He graduated from Medical College of Wisconsin. Dr. David J. Knudtson, MD, FACP is affiliated with Millennium Physician Group.

Office Locations

211 Waukegan Road Suite 200
Northfield, IL 60093

(847) 242-6600

(847) 242-6605

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Millennium Physician Group

6635 Hillway Circle Suite 400
Naples, FL 34112

(239) 455-9550

(239) 455-8980

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Noteworthy Medicare Patient Procedures Performed by Dr. David J. Knudtson, MD, FACP in 2023

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

Top 5%

By Volume:

A1C test

blood draw

lab tests

phlebotomy for lab tests

preventive care

screening PSA test

By Affordability:

A1C test

albumin test

blood count tests

cholesterol screening

coagulation tests

complete blood count

creatinine test

creatinine urine test

diabetes screening

folic acid tests

glycated protein test

kidney function tests

microalbumin urine test

prostate-specific antigen test

prothrombin time test

serum folate test

susceptibility testing

thyroid blood test

thyroid function tests

In 2023, among providers in related specialties within Illinois, Dr. David J. Knudtson, MD, FACP performed more A1C test, blood draw, lab tests, phlebotomy for lab tests, preventive care, and screening PSA test procedures for Medicare patients than 95% of them and he also had a list price for A1C test, albumin test, blood count tests, cholesterol screening, coagulation (blood clotting) tests, complete blood count (CBC), creatinine test, creatinine urine test, diabetes screening, folic acid tests, glycated protein test, kidney function tests, lipid profile, liver function tests (LFTs), metabolic panel, microalbumin test, microalbumin urine test, prostate-specific antigen (PSA) test, prothrombin time (PT) test, serum folate test, susceptibility testing, thyroid blood test, thyroid function tests, total PSA test, urinalysis, urine culture, vitamin B12 test, and vitamin D test that was lower than the list prices billed to Medicare by 95% of them. 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.

Top 10%

By Volume:

By Affordability:

In 2023, among providers in related specialties within Illinois, Dr. David J. Knudtson, MD, FACP performed more complete blood count (CBC), flu shot, lipid profile, and thyroid blood test procedures for Medicare patients than 90% of them and he also had a list price for diabetes management, prostate screening, screening PSA test, uric acid blood test, and uric acid test that was lower than the list prices billed to Medicare by 90% of them. 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.

Top 25%

By Volume:

creatinine urine test

microalbumin urine test

prostate-specific antigen test

Welcome to Medicare visit

By Affordability:

blood draw

blood draw for lab tests

blood tests

C-reactive protein testing

phlebotomy for lab tests

venipuncture

In 2012, among providers in related specialties within Illinois, Dr. David J. Knudtson, MD, FACP performed more creatinine urine test, microalbumin urine test, prostate-specific antigen (PSA) test, and Welcome to Medicare visit (initial preventive physical exam) procedures for Medicare patients than 75% of them and he also had a list price for blood draw, blood draw for lab tests, blood tests, C-reactive protein testing, phlebotomy for lab tests, and venipuncture (phlebotomy) that was lower than the list prices billed to Medicare by 75% of them. 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

Volume of procedures performed by Dr. David J. Knudtson, MD, FACP for Medicare patients.

doctor visit	741

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. David J. Knudtson, MD, FACP treated as an internist in Northfield, IL during 2013 were ear procedures and preventive care.

Volume of procedures performed by Dr. David J. Knudtson, MD, FACP for Medicare patients.

doctor visit	710
ear procedures	15
preventive care	14

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. David J. Knudtson, MD, FACP.

**Gender**
Male	164
Female	173

**Ethnicity**
Non-Hispanic White	302
Black	0
Hispanic	0
Asian	18
Other	0
Native American	0

**Age**
From 65 to 74	165
From 75 to 84	115
85 and over	45
Less than 65	12

Conditions of Medicare patients treated by Dr. David J. Knudtson, MD, FACP in 2013

Hypertension	56
High Cholesterol	55
Stroke	6
Ischemic Heart Disease	28
Depression	16
Chronic Kidney Disease	18
Asthma	4
Osteoperosis	6
Atrial Fibrilation	13
Heart Failure	12
Chronic Obstructive Pulmonary Disease	7
Diabetes	22
Dementia	4
Cancer	11

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

Volume of procedures performed by Dr. David J. Knudtson, MD, FACP for Medicare patients.

doctor visit	676

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. David J. Knudtson, MD, FACP.

**Gender**
Male	180
Female	160

**Ethnicity**
Non-Hispanic White	308
Black	0
Hispanic	0
Asian	15
Other	0
Native American	0

**Age**
From 65 to 74	161
From 75 to 84	117
85 and over	44
Less than 65	18

Conditions of Medicare patients treated by Dr. David J. Knudtson, MD, FACP in 2014

Hypertension	50
High Cholesterol	50
Stroke	7
Ischemic Heart Disease	28
Depression	16
Chronic Kidney Disease	14
Asthma	6
Osteoperosis	6
Atrial Fibrilation	14
Heart Failure	14
Chronic Obstructive Pulmonary Disease	8
Diabetes	19
Dementia	4
Cancer	9

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

Volume of procedures performed by Dr. David J. Knudtson, MD, FACP for Medicare patients.

doctor visit	739

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. David J. Knudtson, MD, FACP.

**Gender**
Male	358
Female	350

**Ethnicity**
Non-Hispanic White	630
Black	0
Hispanic	0
Asian	40
Other	0
Native American	0

**Age**
From 65 to 74	324
From 75 to 84	266
85 and over	88
Less than 65	30

Conditions of Medicare patients treated by Dr. David J. Knudtson, MD, FACP in 2015

Hypertension	50
High Cholesterol	45
Stroke	6
Ischemic Heart Disease	26
Depression	17
Chronic Kidney Disease	13
Asthma	6
Osteoperosis	9
Atrial Fibrilation	8
Heart Failure	8
Chronic Obstructive Pulmonary Disease	6
Diabetes	19
Dementia	5
Cancer	9

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. David J. Knudtson, MD, FACP treated as an internist in Northfield, IL during 2016 were ear procedures and preventive care.

Volume of procedures performed by Dr. David J. Knudtson, MD, FACP for Medicare patients.

doctor visit	921
ear procedures	15
preventive care	11

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. David J. Knudtson, MD, FACP.

**Gender**
Male	216
Female	254

**Ethnicity**
Non-Hispanic White	427
Black	0
Hispanic	0
Asian	19
Other	0
Native American	0

**Age**
From 65 to 74	219
From 75 to 84	150
85 and over	81
Less than 65	20

Conditions of Medicare patients treated by Dr. David J. Knudtson, MD, FACP in 2016

Hypertension	50
High Cholesterol	42
Stroke	5
Ischemic Heart Disease	25
Depression	17
Chronic Kidney Disease	16
Asthma	10
Osteoperosis	7
Atrial Fibrilation	11
Heart Failure	10
Chronic Obstructive Pulmonary Disease	7
Diabetes	19
Dementia	7
Cancer	11

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. David J. Knudtson, MD, FACP treated as an internist in Northfield, IL during 2017 were preventive care.

Volume of procedures performed by Dr. David J. Knudtson, MD, FACP for Medicare patients.

doctor visit	1140
preventive care	16

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. David J. Knudtson, MD, FACP.

**Gender**
Male	254
Female	289

**Ethnicity**
Non-Hispanic White	490
Black	0
Hispanic	0
Asian	20
Other	15
Native American	0

**Age**
From 65 to 74	256
From 75 to 84	198
85 and over	76
Less than 65	13

Conditions of Medicare patients treated by Dr. David J. Knudtson, MD, FACP in 2017

Hypertension	48
High Cholesterol	35
Stroke	5
Ischemic Heart Disease	27
Depression	15
Chronic Kidney Disease	17
Asthma	5
Osteoperosis	8
Atrial Fibrilation	10
Heart Failure	9
Chronic Obstructive Pulmonary Disease	8
Diabetes	18
Dementia	7
Cancer	14

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. David J. Knudtson, MD, FACP treated as an internist in Northfield, IL during 2018 were preventive care and ear procedures.

Volume of procedures performed by Dr. David J. Knudtson, MD, FACP for Medicare patients.

doctor visit	1115
ear procedures	14
preventive care	18

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. David J. Knudtson, MD, FACP.

**Gender**
Male	287
Female	282

**Ethnicity**
Non-Hispanic White	508
Black	0
Hispanic	0
Asian	26
Other	21
Native American	0

**Age**
From 65 to 74	258
From 75 to 84	205
85 and over	95
Less than 65	11

Conditions of Medicare patients treated by Dr. David J. Knudtson, MD, FACP in 2018

Hypertension	45
High Cholesterol	45
Stroke	5
Ischemic Heart Disease	29
Depression	16
Chronic Kidney Disease	18
Asthma	5
Osteoperosis	7
Atrial Fibrilation	8
Heart Failure	11
Chronic Obstructive Pulmonary Disease	8
Diabetes	19
Dementia	7
Cancer	12

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. David J. Knudtson, MD, FACP treated as an internist in Northfield, IL during 2019 were preventive care.

Volume of procedures performed by Dr. David J. Knudtson, MD, FACP for Medicare patients.

doctor visit	1167
preventive care	25

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. David J. Knudtson, MD, FACP.

**Gender**
Male	334
Female	292

**Ethnicity**
Non-Hispanic White	551
Black	0
Hispanic	0
Asian	26
Other	32
Native American	0

**Age**
From 65 to 74	296
From 75 to 84	229
85 and over	89
Less than 65	12

Conditions of Medicare patients treated by Dr. David J. Knudtson, MD, FACP in 2019

Hypertension	48
High Cholesterol	53
Stroke	7
Ischemic Heart Disease	28
Depression	18
Chronic Kidney Disease	26
Asthma	5
Osteoperosis	6
Atrial Fibrilation	11
Heart Failure	12
Chronic Obstructive Pulmonary Disease	10
Diabetes	21
Dementia	7
Cancer	13

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. David J. Knudtson, MD, FACP treated as an internist in Northfield, IL during 2020 were ear procedures.

Volume of procedures performed by Dr. David J. Knudtson, MD, FACP for Medicare patients.

doctor visit	1187
ear procedures	14

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. David J. Knudtson, MD, FACP.

**Gender**
Male	328
Female	313

**Ethnicity**
Non-Hispanic White	556
Black	0
Hispanic	0
Asian	25
Other	38
Native American	0

**Age**
From 65 to 74	315
From 75 to 84	213
85 and over	102
Less than 65	11

Conditions of Medicare patients treated by Dr. David J. Knudtson, MD, FACP in 2020

Hypertension	46
High Cholesterol	46
Stroke	5
Ischemic Heart Disease	27
Depression	20
Chronic Kidney Disease	29
Asthma	6
Osteoperosis	7
Atrial Fibrilation	9
Heart Failure	12
Chronic Obstructive Pulmonary Disease	10
Diabetes	23
Dementia	8
Cancer	13

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. David J. Knudtson, MD, FACP treated as an internist in Northfield, IL during 2021 were lab tests, preventive care, blood draw and thyroid function tests.

Volume of procedures performed by Dr. David J. Knudtson, MD, FACP for Medicare patients.

blood draw	51
diabetes management	35
doctor visit	867
lab tests	213
preventive care	130
thyroid function tests	38
vaccines	38

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. David J. Knudtson, MD, FACP.

**Gender**
Male	372
Female	277

**Ethnicity**
Non-Hispanic White	578
Black	0
Hispanic	0
Asian	20
Other	34
Native American	0

**Age**
From 65 to 74	253
From 75 to 84	260
85 and over	120
Less than 65	16

Conditions of Medicare patients treated by Dr. David J. Knudtson, MD, FACP in 2021

Hypertension	58
High Cholesterol	67
Stroke	6
Ischemic Heart Disease	35
Depression	21
Chronic Kidney Disease	40
Asthma	5
Osteoperosis	9
Atrial Fibrilation	14
Heart Failure	16
Chronic Obstructive Pulmonary Disease	10
Diabetes	27
Dementia	9
Cancer	13

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. David J. Knudtson, MD, FACP treated as an internist in Northfield, IL during 2022 were lab tests, preventive care, blood draw and diabetes management.

Volume of procedures performed by Dr. David J. Knudtson, MD, FACP for Medicare patients.

blood draw	570
diabetes management	429
doctor visit	2314
ear procedures	18
lab tests	2699
preventive care	1048
thyroid function tests	358
vaccines	172

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. David J. Knudtson, MD, FACP.

**Gender**
Male	412
Female	314

**Ethnicity**
Non-Hispanic White	674
Black	0
Hispanic	14
Asian	0
Other	22
Native American	0

**Age**
From 65 to 74	241
From 75 to 84	318
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. David J. Knudtson, MD, FACP in 2022

Hypertension	75
High Cholesterol	75
Stroke	10
Ischemic Heart Disease	30
Depression	23
Chronic Kidney Disease	37
Asthma	7
Osteoperosis	13
Atrial Fibrilation	22
Heart Failure	13
Chronic Obstructive Pulmonary Disease	14
Diabetes	29
Dementia	5
Cancer	21

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. David J. Knudtson, MD, FACP for Medicare patients.

The highest averages for the top procedures that Dr. David J. Knudtson, MD, FACP treated as an internist in Northfield, IL were lab tests, blood draw, diabetes management and thyroid function tests.

blood draw	310
diabetes management	232
doctor visit	1052
ear procedures	15
lab tests	1456
preventive care	180
thyroid function tests	198
vaccines	105

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. David J. Knudtson, MD, FACP.

**Gender**
Female	245
Male	264

**Ethnicity**
Black / African American	0
Asian / Pacific Islander	19
Non-Hispanic White	456
Hispanic	1
Native American / Alaskan Native	0
Other	14

**Age**
85 and over	67
75 to 84	188
Less than 65	13
65 to 74	226

Average of Total of Conditions of Medicare patients treated by Dr. David J. Knudtson, MD, FACP From 2012 - 2022

The highest averages of the most common conditions of Medicare patients that Dr. David J. Knudtson, MD, FACP treated were hypertension, high cholesterol, ischemic heart disease and chronic kidney disease.

Hypertension	47
High Cholesterol	46
Stroke	5
Ischemic Heart Disease	25
Depression	16
Chronic Kidney Disease	20
Asthma	5
Osteoporosis	7
Heart Failure	10
Chronic Obstructive Pulmonary Disease	8
Diabetes	19
Atrial Fibrillation	10
Dementia	5
Cancer	11

Education & Training

Dr. David J. Knudtson, MD, FACP graduated from Medical College of Wisconsin. He completed residency at Northwestern University Affiliated Hospitals. He has a state license in Illinois.

Medical School: Medical College of Wisconsin

Residency: Northwestern University Affiliated Hospitals

Licensed In: Illinois

Affiliations & Hospitals

Dr. David J. Knudtson, MD, FACP is associated with these hospitals and organizations:

Millennium Physician Group

Ratings & Reviews

Dr. David J. Knudtson, MD, FACP has an exceptional overall rating with an average of 4.9 out of 5 stars based on 139 ratings. We collect ratings and reviews of Dr. David J. Knudtson, MD, FACP from all over the web to help you find the right in Northfield, IL.

4.9

Overall Rating

(139 Ratings)

Leave a Review

Reviews Left On DocSpot

Overall Rating: 5.0 2025-06-09

I met doctor Knudtson in 2021 and since then he is my primary physician and will be one as long as he is on the job. He always comes with a big smile wanted to check how everything is. His passtion to keep up my well being and motivating me to improve my health is something he displays everytime I visit him. He is a great doctor and great human being.

General Payments

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

**Payments by Company**
AstraZeneca Pharmaceuticals LP	$1,089 FARXIGA $592	BYDUREON $354	BREZTRI $48	CRESTOR $37	SYMBICORT $25	Other $34
Boehringer Ingelheim Pharmaceuticals, Inc.	$954 JARDIANCE $702	SYNJARDY $123	STIOLTO RESPIMAT $90	TRIJARDY XR $18	COMBIVENT RESPIMAT $11	Other $10
Pfizer Inc.	$469 NURTEC ODT $141	ELIQUIS $130	PAXLOVID $82	PREVNAR 20 $70	ABRYSVO $22	Other $24
Novo Nordisk Inc	$283 Ozempic $172	Tresiba $49	Victoza $30	RYBELSUS $21	NovoLog $11
Amgen Inc.	$276 Prolia $111	EVENITY $92	Repatha $59	$14
Other	$953 Transcatheter Heart Valves $145	MOUNJARO $106	TRELEGY ELLIPTA $64	Androgel $60	Belviq $51	Other $527

**Types of Payments**
Food and Beverage	$3,927
Education	$97

Biography

Patient ratings for Dr. David Knudtson average 5.0 stars (out of 5). Dr. Knudtson is affiliated with Millennium Physician Group. He studied medicine at Medical College of Wisconsin and Northwestern University, Feinberg School of Medicine. His medical residency was performed at a hospital affiliated with Northwestern University.