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Home > MI Providers > Colorectal Surgeons

Dr. John Charles Byrn, MD

Accepting New Patients

(1 Rating)

Specializes in: General Surgery and Colon & Rectal Surgery

Indiana University School of Medicine

Professional interests include: colorectal surgery procedures

1500 E Medical Center Drive
Ann Arbor, MI 48109

(734) 936-4000

Dr. John Charles Byrn, MD is a general surgeon in Ann Arbor, MI specializing in general surgery and colon & rectal surgery. He graduated from Indiana University School of Medicine. Dr. John Charles Byrn, MD is affiliated with Trinity Health and The Regents of the University of Michigan.

Office Locations

1500 E Medical Center Drive
Ann Arbor, MI 48109

(734) 936-4000

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2920 Taubman Center 1500 E Medical Center Drive
Ann Arbor, MI 48109

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Noteworthy Medicare Patient Procedures Performed by Dr. John Charles Byrn, MD in 2024

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

Top 5%

By Affordability:

gastrointestinal endoscopy

gastrointestinal procedures

lower endoscopy

minimally invasive procedures

standard anoscopy

In 2024, Dr. John Charles Byrn, MD had a list price for anoscopy, diagnostic anoscopy, diagnostic endoscopy, endoscopy, gastrointestinal (GI) endoscopy, gastrointestinal procedures, lower endoscopy, minimally invasive procedures, and standard anoscopy that was lower than the list prices billed to Medicare by 95% of providers in related specialties within Michigan. 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. John Charles Byrn, MD treated as a general surgeon in Ann Arbor, MI during 2012 were hospital care, inpatient care, minimally invasive procedures and gastrointestinal procedures.

Volume of procedures performed by Dr. John Charles Byrn, MD for Medicare patients.

doctor visit	96
gastrointestinal procedures	39
hospital care	142
inpatient care	142
minimally invasive procedures	39

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. John Charles Byrn, MD treated as a general surgeon in Ann Arbor, MI during 2013 were hospital care, inpatient care, minimally invasive procedures and gastrointestinal procedures.

Volume of procedures performed by Dr. John Charles Byrn, MD for Medicare patients.

doctor visit	161
gastrointestinal procedures	31
hospital care	114
inpatient care	114
minimally invasive procedures	31
preventive care	11

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. John Charles Byrn, MD.

**Gender**
Male	107
Female	115

**Ethnicity**
Non-Hispanic White	208
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	78
From 75 to 84	65
85 and over	21
Less than 65	58

Conditions of Medicare patients treated by Dr. John Charles Byrn, MD in 2013

Hypertension	63
High Cholesterol	46
Stroke	0
Ischemic Heart Disease	34
Depression	29
Chronic Kidney Disease	35
Asthma	7
Osteoperosis	8
Atrial Fibrilation	11
Heart Failure	18
Chronic Obstructive Pulmonary Disease	14
Diabetes	30
Dementia	6
Cancer	40

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. John Charles Byrn, MD treated as a general surgeon in Ann Arbor, MI during 2014 were hospital care, inpatient care, minimally invasive procedures and preventive care.

Volume of procedures performed by Dr. John Charles Byrn, MD for Medicare patients.

doctor visit	157
gastrointestinal procedures	20
hospital care	32
inpatient care	32
minimally invasive procedures	20
preventive care	20

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. John Charles Byrn, MD.

**Gender**
Male	91
Female	125

**Ethnicity**
Non-Hispanic White	199
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	99
From 75 to 84	48
85 and over	19
Less than 65	50

Conditions of Medicare patients treated by Dr. John Charles Byrn, MD in 2014

Hypertension	56
High Cholesterol	40
Stroke	0
Ischemic Heart Disease	30
Depression	30
Chronic Kidney Disease	36
Asthma	8
Osteoperosis	6
Atrial Fibrilation	13
Heart Failure	18
Chronic Obstructive Pulmonary Disease	19
Diabetes	28
Dementia	8
Cancer	44

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. John Charles Byrn, MD treated as a general surgeon in Ann Arbor, MI during 2015 were minimally invasive procedures, preventive care and gastrointestinal procedures.

Volume of procedures performed by Dr. John Charles Byrn, MD for Medicare patients.

doctor visit	114
gastrointestinal procedures	11
minimally invasive procedures	11
preventive care	11

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. John Charles Byrn, MD.

**Gender**
Male	162
Female	168

**Ethnicity**
Non-Hispanic White	296
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	142
From 75 to 84	86
85 and over	30
Less than 65	72

Conditions of Medicare patients treated by Dr. John Charles Byrn, MD in 2015

Hypertension	60
High Cholesterol	51
Stroke	0
Ischemic Heart Disease	38
Depression	25
Chronic Kidney Disease	39
Asthma	9
Osteoperosis	7
Atrial Fibrilation	15
Heart Failure	12
Chronic Obstructive Pulmonary Disease	16
Diabetes	33
Dementia	7
Cancer	45

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

Volume of procedures performed by Dr. John Charles Byrn, MD for Medicare patients.

doctor visit	115

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. John Charles Byrn, MD.

**Gender**
Male	60
Female	93

**Ethnicity**
Non-Hispanic White	130
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	59
From 75 to 84	0
85 and over	0
Less than 65	54

Conditions of Medicare patients treated by Dr. John Charles Byrn, MD in 2016

Hypertension	74
High Cholesterol	46
Stroke	0
Ischemic Heart Disease	37
Depression	41
Chronic Kidney Disease	52
Asthma	31
Osteoperosis	12
Atrial Fibrilation	16
Heart Failure	22
Chronic Obstructive Pulmonary Disease	27
Diabetes	31
Dementia	18
Cancer	40

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. John Charles Byrn, MD treated as a general surgeon in Ann Arbor, MI during 2017 were minimally invasive procedures, gastrointestinal procedures, hospital care and inpatient care.

Volume of procedures performed by Dr. John Charles Byrn, MD for Medicare patients.

doctor visit	145
gastrointestinal procedures	25
hospital care	11
inpatient care	11
minimally invasive procedures	25

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. John Charles Byrn, MD.

**Gender**
Male	75
Female	102

**Ethnicity**
Non-Hispanic White	153
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	70
From 75 to 84	0
85 and over	0
Less than 65	53

Conditions of Medicare patients treated by Dr. John Charles Byrn, MD in 2017

Hypertension	68
High Cholesterol	48
Stroke	0
Ischemic Heart Disease	34
Depression	39
Chronic Kidney Disease	51
Asthma	12
Osteoperosis	14
Atrial Fibrilation	10
Heart Failure	20
Chronic Obstructive Pulmonary Disease	24
Diabetes	38
Dementia	16
Cancer	42

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. John Charles Byrn, MD treated as a general surgeon in Ann Arbor, MI during 2018 were minimally invasive procedures and gastrointestinal procedures.

Volume of procedures performed by Dr. John Charles Byrn, MD for Medicare patients.

doctor visit	127
gastrointestinal procedures	18
minimally invasive procedures	18

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. John Charles Byrn, MD.

**Gender**
Male	78
Female	81

**Ethnicity**
Non-Hispanic White	141
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	81
From 75 to 84	38
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. John Charles Byrn, MD in 2018

Hypertension	69
High Cholesterol	57
Stroke	0
Ischemic Heart Disease	38
Depression	37
Chronic Kidney Disease	47
Asthma	13
Osteoperosis	10
Atrial Fibrilation	10
Heart Failure	16
Chronic Obstructive Pulmonary Disease	23
Diabetes	37
Dementia	11
Cancer	38

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. John Charles Byrn, MD treated as a general surgeon in Ann Arbor, MI during 2019 were minimally invasive procedures, gastrointestinal procedures, hospital care and inpatient care.

Volume of procedures performed by Dr. John Charles Byrn, MD for Medicare patients.

doctor visit	122
gastrointestinal procedures	15
hospital care	11
inpatient care	11
minimally invasive procedures	15

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. John Charles Byrn, MD.

**Gender**
Male	51
Female	97

**Ethnicity**
Non-Hispanic White	128
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	71
From 75 to 84	34
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. John Charles Byrn, MD in 2019

Hypertension	68
High Cholesterol	52
Stroke	0
Ischemic Heart Disease	29
Depression	33
Chronic Kidney Disease	45
Asthma	11
Osteoperosis	13
Atrial Fibrilation	14
Heart Failure	16
Chronic Obstructive Pulmonary Disease	24
Diabetes	26
Dementia	9
Cancer	47

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

Volume of procedures performed by Dr. John Charles Byrn, MD for Medicare patients.

doctor visit	105

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. John Charles Byrn, MD.

**Gender**
Male	80
Female	72

**Ethnicity**
Non-Hispanic White	129
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	70
From 75 to 84	32
85 and over	13
Less than 65	37

Conditions of Medicare patients treated by Dr. John Charles Byrn, MD in 2020

Hypertension	66
High Cholesterol	54
Stroke	0
Ischemic Heart Disease	32
Depression	36
Chronic Kidney Disease	41
Asthma	8
Osteoperosis	15
Atrial Fibrilation	13
Heart Failure	18
Chronic Obstructive Pulmonary Disease	21
Diabetes	27
Dementia	15
Cancer	43

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. John Charles Byrn, MD treated as a general surgeon in Ann Arbor, MI during 2021 were minimally invasive procedures and gastrointestinal procedures.

Volume of procedures performed by Dr. John Charles Byrn, MD for Medicare patients.

doctor visit	164
gastrointestinal procedures	16
minimally invasive procedures	16

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. John Charles Byrn, MD.

**Gender**
Male	84
Female	90

**Ethnicity**
Non-Hispanic White	149
Black	11
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	79
From 75 to 84	43
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. John Charles Byrn, MD in 2021

Hypertension	66
High Cholesterol	52
Stroke	6
Ischemic Heart Disease	39
Depression	37
Chronic Kidney Disease	52
Asthma	11
Osteoperosis	9
Atrial Fibrilation	11
Heart Failure	24
Chronic Obstructive Pulmonary Disease	17
Diabetes	33
Dementia	11
Cancer	39

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. John Charles Byrn, MD treated as a general surgeon in Ann Arbor, MI during 2022 were hospital care and inpatient care.

Volume of procedures performed by Dr. John Charles Byrn, MD for Medicare patients.

doctor visit	136
hospital care	13
inpatient care	13

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. John Charles Byrn, MD.

**Gender**
Male	85
Female	87

**Ethnicity**
Non-Hispanic White	145
Black	13
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	84
From 75 to 84	41
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. John Charles Byrn, MD in 2022

Hypertension	73
High Cholesterol	67
Stroke	0
Ischemic Heart Disease	32
Depression	31
Chronic Kidney Disease	36
Asthma	13
Osteoperosis	12
Atrial Fibrilation	20
Heart Failure	17
Chronic Obstructive Pulmonary Disease	19
Diabetes	39
Dementia	0
Cancer	46

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

The top procedures that Dr. John Charles Byrn, MD treated as a general surgeon in Ann Arbor, MI during 2023 were hospital care, inpatient care, minimally invasive procedures and gastrointestinal procedures.

Volume of procedures performed by Dr. John Charles Byrn, MD for Medicare patients.

doctor visit	117
gastrointestinal procedures	15
hospital care	19
inpatient care	19
minimally invasive procedures	15

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. John Charles Byrn, MD.

**Gender**
Male	78
Female	84

**Ethnicity**
Non-Hispanic White	135
Black	12
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	65
From 75 to 84	57
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. John Charles Byrn, MD in 2023

Hypertension	70
High Cholesterol	64
Stroke	7
Ischemic Heart Disease	29
Depression	28
Chronic Kidney Disease	25
Asthma	15
Osteoperosis	12
Atrial Fibrilation	27
Heart Failure	15
Chronic Obstructive Pulmonary Disease	23
Diabetes	31
Dementia	0
Cancer	51

Medicare Procedure and Patient Information

2024 Medicare Procedure Volume

The top procedures that Dr. John Charles Byrn, MD treated as a general surgeon in Ann Arbor, MI during 2024 were hospital care, inpatient care, minimally invasive procedures and gastrointestinal procedures.

Volume of procedures performed by Dr. John Charles Byrn, MD for Medicare patients.

doctor visit	112
gastrointestinal procedures	15
hospital care	24
inpatient care	24
minimally invasive procedures	15

2024 Medicare Patient Data

Information about Medicare patients treated by Dr. John Charles Byrn, MD.

**Gender**
Male	77
Female	76

**Ethnicity**
Non-Hispanic White	132
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	80
From 75 to 84	32
85 and over	11
Less than 65	30

Conditions of Medicare patients treated by Dr. John Charles Byrn, MD in 2024

Hypertension	69
High Cholesterol	59
Stroke	0
Ischemic Heart Disease	25
Depression	23
Chronic Kidney Disease	32
Asthma	12
Osteoperosis	14
Atrial Fibrilation	18
Heart Failure	18
Chronic Obstructive Pulmonary Disease	18
Diabetes	28
Dementia	0
Cancer	48

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2024

Volume of procedures performed by Dr. John Charles Byrn, MD for Medicare patients.

The highest averages for the top procedures that Dr. John Charles Byrn, MD treated as a general surgeon in Ann Arbor, MI were hospital care, inpatient care, minimally invasive procedures and gastrointestinal procedures.

doctor visit	128
gastrointestinal procedures	20
hospital care	45
inpatient care	45
minimally invasive procedures	20
preventive care	14

Average Medicare Patient Data From 2012 - 2024

Information about Medicare patients treated by Dr. John Charles Byrn, MD.

**Gender**
Female	91
Male	79

**Ethnicity**
Black / African American	2
Asian / Pacific Islander	0
Non-Hispanic White	149
Hispanic	0
Native American / Alaskan Native	0
Other	0

**Age**
85 and over	7
75 to 84	36
Less than 65	27
65 to 74	75

Average of Total of Conditions of Medicare patients treated by Dr. John Charles Byrn, MD From 2012 - 2024

The highest averages of the most common conditions of Medicare patients that Dr. John Charles Byrn, MD treated were hypertension, high cholesterol, cancer and chronic kidney disease.

Hypertension	61
High Cholesterol	48
Stroke	1
Ischemic Heart Disease	30
Depression	29
Chronic Kidney Disease	37
Asthma	11
Osteoporosis	10
Heart Failure	16
Chronic Obstructive Pulmonary Disease	18
Diabetes	29
Atrial Fibrillation	13
Dementia	7
Cancer	40

Education & Training

Dr. John Charles Byrn, MD graduated from Indiana University School of Medicine. He completed residency at Icahn School of Medicine at Mount Sinai. He is certified by the American Board of Surgery and has a state license in Michigan.

Medical School: Indiana University School of Medicine

Residency: Icahn School of Medicine at Mount Sinai

Board Certification: American Board of Surgery

Licensed In: Michigan

Ratings & Reviews

Dr. John Charles Byrn, MD has an average of 1.0 out of 5 stars based on 1 ratings. We collect ratings and reviews of Dr. John Charles Byrn, MD from all over the web to help you find the right in Ann Arbor, MI.

Overall Rating

(1 Rating)

Leave a Review

Reviews Left On DocSpot

Overall Rating: 1.0 2021-06-24

I am an otherwise healthy 48-year old male referred by my PCP to Colorectal Surgery at Michigan Medicine for an internal hemorrhoid. I was initially scheduled to see a female PA-C; however, due to the rather compromising medical exam I was expecting I opted for a male provider.

At my appointment, a female medical student briefly reviewed my medical history and symptoms. She was followed by the colorectal surgeon, Dr. John Charles Byrn. Dr. Byrn called in his female medical assistant before describing the exam he would perform, then asked me to hop up on the table in a crouch with my bare bottom pointing upward. He did not ask once if I was comfortable with either a female medical student or a female medical assistant being present during the exam. I had been assured by my wife, who is a physician, that it was customary to ask a patient if they were comfortable with, for example, a medical student of the opposite gender being present, particularly during a physical examination. I told Dr. Byrn of my discomfort with having female students/assistants present during the exam. He told me, with palpable condescension, that he couldn’t tell them to leave, that he needed chaperones and that “UMHS is a teaching institution and medical students have a right to be present in the room” I asked him to reconsider but he refused, only this time replying “In this case, you may have to go somewhere else.” I said, “Ok, we’re done, I am leaving.” He took his surgical gloves off indicating that he was done with me. I was shaken and angry, and I called him rude, unprofessional, and arrogant to his face.

He then told me he’d try and talk to his medical team to see if he could find a male chaperone. At this point any possible rapport was irreparably damaged and I just wanted to leave. He kept repeating over and over his argument about the compromises patients must make in a teaching institution.

I grew frustrated and pointed out to him that what just took place, even before the medical exam, was patronizing and humiliating to me as a patient. I challenged the logic of his arguments. His attitude toward me turned combative and he even accused me of “abuse”. I guess his definition of “abuse” is being called unprofessional and arrogant. He called security and had me wait for them. Security personnel displayed the courtesy and empathy that the doctor lacked, and gave me the number to Patient Relations to file a complaint.

According to Michigan Medicine’s chaperone policy, “Whenever possible, but not required, the chaperone should be the gender that the patient feels most comfortable with.” As mentioned, this option (of a male chaperone) was not even given to me initially and was only presented as a possibility after much argument and dissuasion. To see how egregious Dr. Byrn’s behavior towards me was, you need only to reverse the genders of patient and chaperones and replace them with a 19 year old female patient and male chaperones. Or how about a 50 year old Orthodox Jewish woman as a patient? Would using “patients must compromise in a teaching institution” guilt to bully these hypothetical patients be appropriate? How about calling security on them for strenuously objecting?

In case it’s not blatantly obvious, I do not recommend Dr. Byrn.

General Payments

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

**Payments by Company**
Intuitive Surgical, Inc.	$1,147 Da Vinci Surgical System $1,147

**Types of Payments**
Travel and Lodging	$992
Food and Beverage	$154

Biography

Dr. John Byrn is a specialist in general surgery and colon & rectal surgery in Ann Arbor, MI. He has a special interest in colorectal surgery procedures and general surgery. He is professionally affiliated with Trinity Health. Dr. Byrn graduated from Indiana University School of Medicine. According to Trinity Health, he is currently accepting new patients at his office in Ann Arbor, MI.