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Home > MN Providers > Ophthalmologists

Dr. Charles Earl Ahrens, MD

Specializes in: Ophthalmology (Eye Disease)

4190 Loberg Avenue
Duluth, MN 55811

(218) 249-4600

Dr. Charles Earl Ahrens, MD is an ophthalmologist in Duluth, MN specializing in ophthalmology (eye disease). Dr. Charles Earl Ahrens, MD is affiliated with Aspirus Health.

Office Locations

4190 Loberg Avenue
Duluth, MN 55811

(218) 249-4600

(218) 249-4666

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Aspirus Health

4190 Loberg Avenue
Hermantown, MN 55811

(218) 249-4800

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Noteworthy Medicare Patient Procedures Performed by Dr. Charles Earl Ahrens, MD in 2023

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

Top 5%

By Affordability:

corneal topography

In 2023, Dr. Charles Earl Ahrens, MD had a list price for corneal topography that was lower than the list prices billed to Medicare by 95% of providers in related specialties within Minnesota. 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:

SCODI of the posterior segment

By Affordability:

eye injection

intraocular injection

intravitreal drug injection

intravitreal injection

ophthalmic biometry

visual field test

In 2012, among providers in related specialties within Minnesota, Dr. Charles Earl Ahrens, MD performed more SCODI of the posterior segment (SCODI-P) procedures for Medicare patients than 75% of them and he also had a list price for eye injection, intraocular injection, intravitreal drug injection, intravitreal injection, ophthalmic biometry, and visual field test 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

The top procedures that Dr. Charles Earl Ahrens, MD treated as an ophthalmologist in Duluth, MN during 2012 were eye procedures and ultrasound (sonogram).

Volume of procedures performed by Dr. Charles Earl Ahrens, MD for Medicare patients.

doctor visit	211
eye procedures	698
ultrasound (sonogram)	13

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Charles Earl Ahrens, MD treated as an ophthalmologist in Duluth, MN during 2013 were eye procedures and ultrasound (sonogram).

Volume of procedures performed by Dr. Charles Earl Ahrens, MD for Medicare patients.

doctor visit	260
eye procedures	729
ultrasound (sonogram)	14

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Charles Earl Ahrens, MD.

**Gender**
Male	185
Female	269

**Ethnicity**
Non-Hispanic White	438
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	159
From 75 to 84	170
85 and over	82
Less than 65	43

Conditions of Medicare patients treated by Dr. Charles Earl Ahrens, MD in 2013

Hypertension	49
High Cholesterol	37
Stroke	5
Ischemic Heart Disease	25
Depression	13
Chronic Kidney Disease	15
Asthma	3
Osteoperosis	8
Atrial Fibrilation	8
Heart Failure	11
Chronic Obstructive Pulmonary Disease	8
Diabetes	22
Dementia	6
Cancer	8

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Charles Earl Ahrens, MD treated as an ophthalmologist in Duluth, MN during 2014 were eye procedures, lab tests and laser treatment.

Volume of procedures performed by Dr. Charles Earl Ahrens, MD for Medicare patients.

doctor visit	351
eye procedures	738
lab tests	60
laser treatment	16

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Charles Earl Ahrens, MD.

**Gender**
Male	206
Female	285

**Ethnicity**
Non-Hispanic White	478
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	181
From 75 to 84	178
85 and over	80
Less than 65	52

Conditions of Medicare patients treated by Dr. Charles Earl Ahrens, MD in 2014

Hypertension	50
High Cholesterol	35
Stroke	2
Ischemic Heart Disease	23
Depression	13
Chronic Kidney Disease	16
Asthma	4
Osteoperosis	6
Atrial Fibrilation	9
Heart Failure	12
Chronic Obstructive Pulmonary Disease	9
Diabetes	21
Dementia	6
Cancer	7

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Charles Earl Ahrens, MD treated as an ophthalmologist in Duluth, MN during 2015 were eye procedures and injections.

Volume of procedures performed by Dr. Charles Earl Ahrens, MD for Medicare patients.

doctor visit	231
eye procedures	489
injections	53

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Charles Earl Ahrens, MD.

**Gender**
Male	282
Female	396

**Age**
From 65 to 74	226
From 75 to 84	246
85 and over	120
Less than 65	86

Conditions of Medicare patients treated by Dr. Charles Earl Ahrens, MD in 2015

Hypertension	57
High Cholesterol	44
Stroke	5
Ischemic Heart Disease	25
Depression	18
Chronic Kidney Disease	17
Asthma	7
Osteoperosis	7
Atrial Fibrilation	9
Heart Failure	11
Chronic Obstructive Pulmonary Disease	10
Diabetes	32
Dementia	7
Cancer	6

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Charles Earl Ahrens, MD treated as an ophthalmologist in Duluth, MN during 2016 were eye procedures and injections.

Volume of procedures performed by Dr. Charles Earl Ahrens, MD for Medicare patients.

doctor visit	519
eye procedures	450
injections	129

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Charles Earl Ahrens, MD.

**Gender**
Male	132
Female	208

**Ethnicity**
Non-Hispanic White	324
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	128
From 75 to 84	115
85 and over	47
Less than 65	50

Conditions of Medicare patients treated by Dr. Charles Earl Ahrens, MD in 2016

Hypertension	59
High Cholesterol	38
Stroke	0
Ischemic Heart Disease	25
Depression	18
Chronic Kidney Disease	21
Asthma	13
Osteoperosis	5
Atrial Fibrilation	7
Heart Failure	14
Chronic Obstructive Pulmonary Disease	10
Diabetes	32
Dementia	5
Cancer	6

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Charles Earl Ahrens, MD treated as an ophthalmologist in Duluth, MN during 2017 were eye procedures and injections.

Volume of procedures performed by Dr. Charles Earl Ahrens, MD for Medicare patients.

doctor visit	664
eye procedures	603
injections	167

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Charles Earl Ahrens, MD.

**Gender**
Male	174
Female	238

**Ethnicity**
Non-Hispanic White	393
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	161
From 75 to 84	132
85 and over	65
Less than 65	54

Conditions of Medicare patients treated by Dr. Charles Earl Ahrens, MD in 2017

Hypertension	54
High Cholesterol	32
Stroke	3
Ischemic Heart Disease	26
Depression	18
Chronic Kidney Disease	23
Asthma	6
Osteoperosis	7
Atrial Fibrilation	7
Heart Failure	13
Chronic Obstructive Pulmonary Disease	10
Diabetes	30
Dementia	5
Cancer	6

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Charles Earl Ahrens, MD treated as an ophthalmologist in Duluth, MN during 2018 were eye procedures, injections, capsulotomy and laser treatment.

Volume of procedures performed by Dr. Charles Earl Ahrens, MD for Medicare patients.

capsulotomy	15
doctor visit	648
eye procedures	655
injections	188
laser treatment	15

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Charles Earl Ahrens, MD.

**Gender**
Male	176
Female	240

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

**Age**
From 65 to 74	159
From 75 to 84	139
85 and over	73
Less than 65	45

Conditions of Medicare patients treated by Dr. Charles Earl Ahrens, MD in 2018

Hypertension	59
High Cholesterol	39
Stroke	4
Ischemic Heart Disease	28
Depression	18
Chronic Kidney Disease	25
Asthma	7
Osteoperosis	8
Atrial Fibrilation	9
Heart Failure	15
Chronic Obstructive Pulmonary Disease	11
Diabetes	33
Dementia	6
Cancer	10

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Charles Earl Ahrens, MD treated as an ophthalmologist in Duluth, MN during 2019 were eye procedures and injections.

Volume of procedures performed by Dr. Charles Earl Ahrens, MD for Medicare patients.

doctor visit	947
eye procedures	828
injections	245

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Charles Earl Ahrens, MD.

**Gender**
Male	217
Female	297

**Ethnicity**
Non-Hispanic White	483
Black	0
Hispanic	0
Asian	0
Other	0
Native American	12

**Age**
From 65 to 74	210
From 75 to 84	156
85 and over	80
Less than 65	68

Conditions of Medicare patients treated by Dr. Charles Earl Ahrens, MD in 2019

Hypertension	55
High Cholesterol	39
Stroke	4
Ischemic Heart Disease	25
Depression	19
Chronic Kidney Disease	25
Asthma	6
Osteoperosis	9
Atrial Fibrilation	8
Heart Failure	15
Chronic Obstructive Pulmonary Disease	12
Diabetes	31
Dementia	7
Cancer	7

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Charles Earl Ahrens, MD treated as an ophthalmologist in Duluth, MN during 2020 were eye procedures and injections.

Volume of procedures performed by Dr. Charles Earl Ahrens, MD for Medicare patients.

doctor visit	807
eye procedures	746
injections	209

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Charles Earl Ahrens, MD.

**Gender**
Male	203
Female	259

**Ethnicity**
Non-Hispanic White	430
Black	0
Hispanic	0
Asian	0
Other	0
Native American	14

**Age**
From 65 to 74	184
From 75 to 84	150
85 and over	80
Less than 65	48

Conditions of Medicare patients treated by Dr. Charles Earl Ahrens, MD in 2020

Hypertension	53
High Cholesterol	39
Stroke	4
Ischemic Heart Disease	27
Depression	15
Chronic Kidney Disease	22
Asthma	6
Osteoperosis	8
Atrial Fibrilation	10
Heart Failure	13
Chronic Obstructive Pulmonary Disease	9
Diabetes	30
Dementia	6
Cancer	8

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Charles Earl Ahrens, MD treated as an ophthalmologist in Duluth, MN during 2021 were eye procedures, injections, laser treatment and capsulotomy.

Volume of procedures performed by Dr. Charles Earl Ahrens, MD for Medicare patients.

capsulotomy	17
doctor visit	737
eye procedures	1171
injections	302
laser treatment	37

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Charles Earl Ahrens, MD.

**Gender**
Male	247
Female	306

**Ethnicity**
Non-Hispanic White	516
Black	0
Hispanic	0
Asian	0
Other	16
Native American	0

**Age**
From 65 to 74	220
From 75 to 84	170
85 and over	98
Less than 65	65

Conditions of Medicare patients treated by Dr. Charles Earl Ahrens, MD in 2021

Hypertension	53
High Cholesterol	40
Stroke	5
Ischemic Heart Disease	24
Depression	19
Chronic Kidney Disease	24
Asthma	5
Osteoperosis	8
Atrial Fibrilation	10
Heart Failure	13
Chronic Obstructive Pulmonary Disease	9
Diabetes	30
Dementia	7
Cancer	7

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Charles Earl Ahrens, MD treated as an ophthalmologist in Duluth, MN during 2022 were eye procedures, injections, capsulotomy and laser treatment.

Volume of procedures performed by Dr. Charles Earl Ahrens, MD for Medicare patients.

capsulotomy	15
doctor visit	593
eye procedures	1125
injections	302
laser treatment	15

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Charles Earl Ahrens, MD.

**Gender**
Male	225
Female	294

**Ethnicity**
Non-Hispanic White	490
Black	0
Hispanic	0
Asian	0
Other	0
Native American	14

**Age**
From 65 to 74	212
From 75 to 84	172
85 and over	90
Less than 65	45

Conditions of Medicare patients treated by Dr. Charles Earl Ahrens, MD in 2022

Hypertension	65
High Cholesterol	59
Stroke	6
Ischemic Heart Disease	18
Depression	16
Chronic Kidney Disease	16
Asthma	6
Osteoperosis	11
Atrial Fibrilation	17
Heart Failure	13
Chronic Obstructive Pulmonary Disease	10
Diabetes	29
Dementia	5
Cancer	13

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Charles Earl Ahrens, MD for Medicare patients.

The highest averages for the top procedures that Dr. Charles Earl Ahrens, MD treated as an ophthalmologist in Duluth, MN were eye procedures, injections, lab tests and laser treatment.

capsulotomy	15
doctor visit	542
eye procedures	748
injections	199
lab tests	60
laser treatment	20
ultrasound (sonogram)	13

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Charles Earl Ahrens, MD.

**Gender**
Male	186
Female	253

**Ethnicity**
Black / African American	0
Asian / Pacific Islander	0
Non-Hispanic White	358
Native American / Alaskan Native	3
Hispanic	0
Other	1

**Age**
75 to 84	148
85 and over	74
Less than 65	50
65 to 74	167

Average of Total of Conditions of Medicare patients treated by Dr. Charles Earl Ahrens, MD From 2012 - 2022

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

Hypertension	50
High Cholesterol	36
Stroke	3
Ischemic Heart Disease	22
Depression	15
Chronic Kidney Disease	18
Asthma	5
Osteoporosis	7
Heart Failure	11
Chronic Obstructive Pulmonary Disease	8
Diabetes	26
Atrial Fibrillation	8
Dementia	5
Cancer	7

Education & Training

He is certified by the Board Certified in Ophthalmology and has a state license in Minnesota.

Board Certification: Board Certified in Ophthalmology

Licensed In: Minnesota

Affiliations & Hospitals

Dr. Charles Earl Ahrens, MD is associated with these hospitals and organizations:

Aspirus Health

Ratings & Reviews

Dr. Charles Earl Ahrens, MD has an exceptional overall rating with an average of 4.75 out of 5 stars based on 1499 ratings. We collect ratings and reviews of Dr. Charles Earl Ahrens, MD from all over the web to help you find the right in Duluth, MN.

4.75

Overall Rating

(1499 Ratings)

Leave a Review

General Payments

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

**Payments by Company**
The Cameron-Ehlen Group, Inc.	$216 Osmolarity System $90	LENSAR Laser $60	Blink Tears $20	Tecnis ZCB00 $19	Tecnis ZMB00 $17	Other $11
Allergan Inc.	$65 COMBIGAN $49	RESTASIS $16
Alcon Laboratories Inc	$17 AcrySof $17
Oyster Point Pharma, Inc.	$15 TYRVAYA $15
Daiichi Sankyo Inc.	$12 MOVANTIK $12
Other	$11 PROAIR $11

**Types of Payments**
Food and Beverage	$336

Biography

Dr. Charles Ahrens is a specialist in ophthalmology (eye disease). Patient reviews placed him at an average of 4.5 stars (out of 5). He is affiliated with Aspirus Health. Dr. Ahrens attended medical school at the University of South Dakota, Sanford School of Medicine.

Select Year:

Dr. Charles Earl Ahrens, MD

Office Locations

Noteworthy Medicare Patient Procedures Performed by Dr. Charles Earl Ahrens, MD in 2023

By Affordability:

By Volume:

By Affordability:

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. Charles Earl Ahrens, MD in 2013

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

2014 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Charles Earl Ahrens, MD in 2014

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

2015 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Charles Earl Ahrens, MD in 2015

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

2016 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Charles Earl Ahrens, MD in 2016

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

2017 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Charles Earl Ahrens, MD in 2017

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

2018 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Charles Earl Ahrens, MD in 2018

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

2019 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Charles Earl Ahrens, MD in 2019

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

2020 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Charles Earl Ahrens, MD in 2020

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

2021 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Charles Earl Ahrens, MD in 2021

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

2022 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Charles Earl Ahrens, MD in 2022

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Average Medicare Patient Data From 2012 - 2022

Average of Total of Conditions of Medicare patients treated by Dr. Charles Earl Ahrens, MD From 2012 - 2022

Education & Training

Affiliations & Hospitals

Ratings & Reviews

General Payments

Biography

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