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Home > MI Providers > Optometrists

Dr. John William Marohn, OD

(Dr. John W. Marohn, O.D.)

(No ratings)

Specializes in: Optometry (Primary Eye Care)

Ferris State University, Michigan College of Optometry (1991)

2848 Niles Road
Saint Joseph, MI 49085

(269) 428-3300

Dr. John William Marohn, OD is an optometrist in Niles, MI specializing in optometry (primary eye care). He graduated from Ferris State University, Michigan College of Optometry in 1991 and has 35 years of experience. Dr. John William Marohn, OD is affiliated with GREAT LAKES EYE CARE PC.

Office Locations

120 Longmeadow Village Drive
Niles, MI 49120

(269) 684-6400

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2848 Niles Road
Saint Joseph, MI 49085

(269) 428-3300

(269) 428-5005

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Noteworthy Medicare Patient Procedures Performed by Dr. John William Marohn, OD in 2023

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

Top 10%

By Volume:

comprehensive eye exam

In 2023, Dr. John William Marohn, OD performed more comprehensive eye exam procedures for Medicare patients than 90% of providers in related specialties within Michigan.

Top 25%

By Volume:

eye procedures

SCODI of the posterior segment

In 2012, Dr. John William Marohn, OD performed more eye procedures, and SCODI of the posterior segment (SCODI-P) procedures for Medicare patients than 75% of providers in related specialties within Michigan.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. John William Marohn, OD treated as an optometrist in Niles, MI during 2012 were eye procedures and ultrasound (sonogram).

Volume of procedures performed by Dr. John William Marohn, OD for Medicare patients.

doctor visit	662
eye procedures	256
ultrasound (sonogram)	11

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. John William Marohn, OD treated as an optometrist in Niles, MI during 2013 were eye procedures.

Volume of procedures performed by Dr. John William Marohn, OD for Medicare patients.

doctor visit	558
eye procedures	362

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. John William Marohn, OD.

**Gender**
Male	286
Female	504

**Ethnicity**
Non-Hispanic White	715
Black	57
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	358
From 75 to 84	279
85 and over	125
Less than 65	28

Conditions of Medicare patients treated by Dr. John William Marohn, OD in 2013

Hypertension	66
High Cholesterol	60
Stroke	3
Ischemic Heart Disease	38
Depression	14
Chronic Kidney Disease	22
Asthma	5
Osteoperosis	7
Atrial Fibrilation	9
Heart Failure	14
Chronic Obstructive Pulmonary Disease	9
Diabetes	29
Dementia	7
Cancer	11

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. John William Marohn, OD treated as an optometrist in Niles, MI during 2014 were eye procedures and ultrasound (sonogram).

Volume of procedures performed by Dr. John William Marohn, OD for Medicare patients.

doctor visit	569
eye procedures	411
ultrasound (sonogram)	11

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. John William Marohn, OD.

**Gender**
Male	292
Female	555

**Ethnicity**
Non-Hispanic White	767
Black	61
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	373
From 75 to 84	296
85 and over	145
Less than 65	33

Conditions of Medicare patients treated by Dr. John William Marohn, OD in 2014

Hypertension	64
High Cholesterol	56
Stroke	4
Ischemic Heart Disease	33
Depression	16
Chronic Kidney Disease	21
Asthma	6
Osteoperosis	9
Atrial Fibrilation	10
Heart Failure	11
Chronic Obstructive Pulmonary Disease	10
Diabetes	27
Dementia	6
Cancer	10

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. John William Marohn, OD treated as an optometrist in Niles, MI during 2015 were eye procedures.

Volume of procedures performed by Dr. John William Marohn, OD for Medicare patients.

doctor visit	530
eye procedures	456

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. John William Marohn, OD.

**Gender**
Male	600
Female	1108

**Ethnicity**
Non-Hispanic White	1574
Black	88
Hispanic	0
Asian	0
Other	22
Native American	0

**Age**
From 65 to 74	742
From 75 to 84	624
85 and over	272
Less than 65	70

Conditions of Medicare patients treated by Dr. John William Marohn, OD in 2015

Hypertension	63
High Cholesterol	58
Stroke	3
Ischemic Heart Disease	31
Depression	13
Chronic Kidney Disease	20
Asthma	8
Osteoperosis	7
Atrial Fibrilation	10
Heart Failure	11
Chronic Obstructive Pulmonary Disease	11
Diabetes	25
Dementia	5
Cancer	9

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. John William Marohn, OD treated as an optometrist in Niles, MI during 2016 were eye procedures.

Volume of procedures performed by Dr. John William Marohn, OD for Medicare patients.

doctor visit	664
eye procedures	371

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. John William Marohn, OD.

**Gender**
Male	316
Female	562

**Ethnicity**
Non-Hispanic White	803
Black	51
Hispanic	0
Asian	0
Other	13
Native American	0

**Age**
From 65 to 74	384
From 75 to 84	313
85 and over	140
Less than 65	41

Conditions of Medicare patients treated by Dr. John William Marohn, OD in 2016

Hypertension	63
High Cholesterol	58
Stroke	2
Ischemic Heart Disease	29
Depression	15
Chronic Kidney Disease	23
Asthma	12
Osteoperosis	9
Atrial Fibrilation	10
Heart Failure	12
Chronic Obstructive Pulmonary Disease	12
Diabetes	26
Dementia	5
Cancer	12

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. John William Marohn, OD treated as an optometrist in Niles, MI during 2017 were eye procedures.

Volume of procedures performed by Dr. John William Marohn, OD for Medicare patients.

doctor visit	611
eye procedures	482

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. John William Marohn, OD.

**Gender**
Male	323
Female	629

**Ethnicity**
Non-Hispanic White	863
Black	57
Hispanic	0
Asian	0
Other	16
Native American	0

**Age**
From 65 to 74	397
From 75 to 84	380
85 and over	140
Less than 65	35

Conditions of Medicare patients treated by Dr. John William Marohn, OD in 2017

Hypertension	66
High Cholesterol	52
Stroke	2
Ischemic Heart Disease	29
Depression	14
Chronic Kidney Disease	26
Asthma	7
Osteoperosis	9
Atrial Fibrilation	10
Heart Failure	10
Chronic Obstructive Pulmonary Disease	10
Diabetes	26
Dementia	5
Cancer	9

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. John William Marohn, OD treated as an optometrist in Niles, MI during 2018 were eye procedures.

Volume of procedures performed by Dr. John William Marohn, OD for Medicare patients.

doctor visit	591
eye procedures	516

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. John William Marohn, OD.

**Gender**
Male	329
Female	633

**Ethnicity**
Non-Hispanic White	875
Black	52
Hispanic	0
Asian	0
Other	14
Native American	0

**Age**
From 65 to 74	431
From 75 to 84	347
85 and over	152
Less than 65	32

Conditions of Medicare patients treated by Dr. John William Marohn, OD in 2018

Hypertension	64
High Cholesterol	62
Stroke	3
Ischemic Heart Disease	28
Depression	17
Chronic Kidney Disease	28
Asthma	5
Osteoperosis	9
Atrial Fibrilation	10
Heart Failure	13
Chronic Obstructive Pulmonary Disease	11
Diabetes	26
Dementia	6
Cancer	10

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. John William Marohn, OD treated as an optometrist in Niles, MI during 2019 were eye procedures and ultrasound (sonogram).

Volume of procedures performed by Dr. John William Marohn, OD for Medicare patients.

doctor visit	585
eye procedures	659
ultrasound (sonogram)	12

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. John William Marohn, OD.

**Gender**
Male	346
Female	642

**Ethnicity**
Non-Hispanic White	909
Black	38
Hispanic	0
Asian	0
Other	26
Native American	0

**Age**
From 65 to 74	456
From 75 to 84	377
85 and over	133
Less than 65	22

Conditions of Medicare patients treated by Dr. John William Marohn, OD in 2019

Hypertension	63
High Cholesterol	63
Stroke	3
Ischemic Heart Disease	30
Depression	19
Chronic Kidney Disease	28
Asthma	5
Osteoperosis	9
Atrial Fibrilation	10
Heart Failure	12
Chronic Obstructive Pulmonary Disease	9
Diabetes	25
Dementia	6
Cancer	9

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. John William Marohn, OD treated as an optometrist in Niles, MI during 2020 were eye procedures.

Volume of procedures performed by Dr. John William Marohn, OD for Medicare patients.

doctor visit	396
eye procedures	600

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. John William Marohn, OD.

**Gender**
Male	273
Female	526

**Ethnicity**
Non-Hispanic White	724
Black	34
Hispanic	0
Asian	0
Other	29
Native American	0

**Age**
From 65 to 74	355
From 75 to 84	319
85 and over	102
Less than 65	23

Conditions of Medicare patients treated by Dr. John William Marohn, OD in 2020

Hypertension	62
High Cholesterol	59
Stroke	3
Ischemic Heart Disease	29
Depression	16
Chronic Kidney Disease	28
Asthma	4
Osteoperosis	9
Atrial Fibrilation	9
Heart Failure	11
Chronic Obstructive Pulmonary Disease	9
Diabetes	27
Dementia	7
Cancer	9

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. John William Marohn, OD treated as an optometrist in Niles, MI during 2021 were eye procedures.

Volume of procedures performed by Dr. John William Marohn, OD for Medicare patients.

doctor visit	348
eye procedures	648

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. John William Marohn, OD.

**Gender**
Male	245
Female	501

**Ethnicity**
Non-Hispanic White	696
Black	22
Hispanic	0
Asian	0
Other	14
Native American	0

**Age**
From 65 to 74	313
From 75 to 84	306
85 and over	112
Less than 65	15

Conditions of Medicare patients treated by Dr. John William Marohn, OD in 2021

Hypertension	61
High Cholesterol	63
Stroke	4
Ischemic Heart Disease	26
Depression	18
Chronic Kidney Disease	32
Asthma	4
Osteoperosis	9
Atrial Fibrilation	11
Heart Failure	10
Chronic Obstructive Pulmonary Disease	7
Diabetes	25
Dementia	5
Cancer	9

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. John William Marohn, OD treated as an optometrist in Niles, MI during 2022 were eye procedures.

Volume of procedures performed by Dr. John William Marohn, OD for Medicare patients.

doctor visit	286
eye procedures	506

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. John William Marohn, OD.

**Gender**
Male	199
Female	355

**Ethnicity**
Non-Hispanic White	507
Black	22
Hispanic	0
Asian	0
Other	13
Native American	0

**Age**
From 65 to 74	237
From 75 to 84	224
85 and over	74
Less than 65	19

Conditions of Medicare patients treated by Dr. John William Marohn, OD in 2022

Hypertension	73
High Cholesterol	75
Stroke	7
Ischemic Heart Disease	22
Depression	14
Chronic Kidney Disease	26
Asthma	6
Osteoperosis	16
Atrial Fibrilation	14
Heart Failure	10
Chronic Obstructive Pulmonary Disease	11
Diabetes	27
Dementia	4
Cancer	15

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. John William Marohn, OD for Medicare patients.

The highest averages for the top procedures that Dr. John William Marohn, OD treated as an optometrist in Niles, MI were eye procedures and ultrasound (sonogram).

doctor visit	527
eye procedures	478
ultrasound (sonogram)	11

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. John William Marohn, OD.

**Gender**
Male	291
Female	546

**Ethnicity**
Black / African American	43
Asian / Pacific Islander	0
Non-Hispanic White	766
Hispanic	0
Native American / Alaskan Native	0
Other	13

**Age**
75 to 84	315
85 and over	126
Less than 65	28
65 to 74	367

Average of Total of Conditions of Medicare patients treated by Dr. John William Marohn, OD From 2012 - 2022

The highest averages of the most common conditions of Medicare patients that Dr. John William Marohn, OD treated were hypertension, high cholesterol, ischemic heart disease and chronic kidney disease.

Hypertension	58
High Cholesterol	55
Stroke	3
Ischemic Heart Disease	26
Depression	14
Chronic Kidney Disease	23
Asthma	5
Osteoporosis	8
Heart Failure	10
Chronic Obstructive Pulmonary Disease	9
Diabetes	23
Atrial Fibrillation	9
Cancer	9
Dementia	5

Education & Training

Dr. John William Marohn, OD graduated from Ferris State University, Michigan College of Optometry in 1991. He has a state license in Michigan.

Medical School: Ferris State University, Michigan College of Optometry (1991)

Licensed In: Michigan

Affiliations & Hospitals

Dr. John William Marohn, OD is associated with these hospitals and organizations:

GREAT LAKES EYE CARE PC

Ratings & Reviews

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General Payments

These charts describe general payments received by Dr. John William Marohn, OD. Doctors may receive payments for a number of reasons, including meal compensation, travel compensation, and consulting.

**Payments by Company**
ABB Con-Cise Optical Group LLC	$171 Contact Lens $157	$14
Alcon Vision LLC	$119 Precision 1 $76	DAILIES $43
Coopervision Inc.	$65 Clariti Contact Lens $55	CVI Contact Lens $10
Johnson & Johnson Vision Care, Inc.	$65 Acuvue $65
Carl Zeiss Meditec, Inc.	$56 CLARUS 500 Fundus Camera $56
Other	$230 XIIDRA $32	ULTRA $24	LOTEMAX GEL $21	Healon Viscoelastics $18	BTOD $15	Other $119

**Types of Payments**
Food and Beverage	$696
Education	$10

Biography

Dr. John Marohn works as an optometry (primary eye care) specialist in Niles, MI and Saint Joseph, MI. Dr. Marohn has obtained a license to practice in Michigan.

Select Year:

Dr. John William Marohn, OD

Office Locations

Noteworthy Medicare Patient Procedures Performed by Dr. John William Marohn, OD in 2023

By Volume:

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. John William Marohn, OD in 2013

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

2014 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John William Marohn, OD in 2014

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

2015 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John William Marohn, OD in 2015

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

2016 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John William Marohn, OD in 2016

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

2017 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John William Marohn, OD in 2017

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

2018 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John William Marohn, OD in 2018

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

2019 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John William Marohn, OD in 2019

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

2020 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John William Marohn, OD in 2020

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

2021 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John William Marohn, OD in 2021

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

2022 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John William Marohn, OD 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. John William Marohn, OD From 2012 - 2022

Education & Training

Affiliations & Hospitals

Ratings & Reviews

General Payments

Biography

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