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Dr. Christopher G. Tretter, MD

(No ratings)

Specializes in: Medical Oncology, Adult Oncology and Adult Hematology
McGill University Faculty of Medicine (1994)
265 Western Avenue Suite 2
South Portland, ME 04106

Dr. Christopher G. Tretter, MD is a medical oncologist in South Portland, ME specializing in medical oncology, adult oncology and adult hematology. He graduated from McGill University Faculty of Medicine in 1994 and has 32 years of experience. Dr. Christopher G. Tretter, MD is affiliated with MaineHealth, MaineHealth Maine Medical Center and MaineHealth Accountable Care Organization.

View Doctor's Full Profile (207) 661-0200

Office Locations

MaineHealth Accountable Care Organization

265 Western Avenue Suite 2
South Portland, ME 04106
(207) 661-0200
(207) 661-0299
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Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Christopher G. Tretter, MD treated as a medical oncologist in South Portland, ME during 2012 were hospital care and inpatient care.

Volume of procedures performed by Dr. Christopher G. Tretter, MD for Medicare patients.

doctor visit 845
hospital care 112
inpatient care 112

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Christopher G. Tretter, MD treated as a medical oncologist in South Portland, ME during 2013 were hospital care and inpatient care.

Volume of procedures performed by Dr. Christopher G. Tretter, MD for Medicare patients.

doctor visit 861
hospital care 104
inpatient care 104

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Christopher G. Tretter, MD.

Gender
Male 228
Female 66
Ethnicity
Non-Hispanic White 274
Black 0
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 123
From 75 to 84 100
85 and over 54
Less than 65 17

Conditions of Medicare patients treated by Dr. Christopher G. Tretter, MD in 2013

Hypertension 65
High Cholesterol 52
Stroke 6
Ischemic Heart Disease 40
Depression 17
Chronic Kidney Disease 40
Asthma 5
Osteoperosis 5
Atrial Fibrilation 12
Heart Failure 15
Chronic Obstructive Pulmonary Disease 15
Diabetes 28
Dementia 4
Cancer 62

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

Volume of procedures performed by Dr. Christopher G. Tretter, MD for Medicare patients.

doctor visit 255

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Christopher G. Tretter, MD.

Gender
Male 137
Female 24
Ethnicity
Non-Hispanic White 150
Black 0
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 65
From 75 to 84 60
85 and over 0
Less than 65 0

Conditions of Medicare patients treated by Dr. Christopher G. Tretter, MD in 2014

Hypertension 68
High Cholesterol 45
Stroke 0
Ischemic Heart Disease 30
Depression 14
Chronic Kidney Disease 47
Asthma 0
Osteoperosis 8
Atrial Fibrilation 13
Heart Failure 14
Chronic Obstructive Pulmonary Disease 16
Diabetes 25
Dementia 0
Cancer 64

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Christopher G. Tretter, MD treated as a medical oncologist in South Portland, ME during 2015 were hospital care and inpatient care.

Volume of procedures performed by Dr. Christopher G. Tretter, MD for Medicare patients.

doctor visit 891
hospital care 107
inpatient care 107

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Christopher G. Tretter, MD.

Gender
Male 418
Female 80
Ethnicity
Non-Hispanic White 472
Black 0
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 202
From 75 to 84 150
85 and over 114
Less than 65 32

Conditions of Medicare patients treated by Dr. Christopher G. Tretter, MD in 2015

Hypertension 72
High Cholesterol 52
Stroke 5
Ischemic Heart Disease 38
Depression 17
Chronic Kidney Disease 47
Asthma 11
Osteoperosis 6
Atrial Fibrilation 14
Heart Failure 19
Chronic Obstructive Pulmonary Disease 21
Diabetes 30
Dementia 7
Cancer 62

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Christopher G. Tretter, MD treated as a medical oncologist in South Portland, ME during 2016 were hospital care and inpatient care.

Volume of procedures performed by Dr. Christopher G. Tretter, MD for Medicare patients.

doctor visit 947
hospital care 141
inpatient care 141

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Christopher G. Tretter, MD.

Gender
Male 232
Female 53
Ethnicity
Non-Hispanic White 265
Black 0
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 110
From 75 to 84 104
85 and over 57
Less than 65 14

Conditions of Medicare patients treated by Dr. Christopher G. Tretter, MD in 2016

Hypertension 70
High Cholesterol 52
Stroke 5
Ischemic Heart Disease 40
Depression 24
Chronic Kidney Disease 49
Asthma 20
Osteoperosis 8
Atrial Fibrilation 16
Heart Failure 19
Chronic Obstructive Pulmonary Disease 20
Diabetes 29
Dementia 10
Cancer 60

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Christopher G. Tretter, MD treated as a medical oncologist in South Portland, ME during 2017 were hospital care and inpatient care.

Volume of procedures performed by Dr. Christopher G. Tretter, MD for Medicare patients.

doctor visit 945
hospital care 102
inpatient care 102

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Christopher G. Tretter, MD.

Gender
Male 413
Female 72
Ethnicity
Non-Hispanic White 461
Black 0
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 130
From 75 to 84 221
85 and over 113
Less than 65 21

Conditions of Medicare patients treated by Dr. Christopher G. Tretter, MD in 2017

Hypertension 72
High Cholesterol 51
Stroke 5
Ischemic Heart Disease 43
Depression 20
Chronic Kidney Disease 49
Asthma 5
Osteoperosis 5
Atrial Fibrilation 18
Heart Failure 21
Chronic Obstructive Pulmonary Disease 16
Diabetes 28
Dementia 10
Cancer 69

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Christopher G. Tretter, MD treated as a medical oncologist in South Portland, ME during 2018 were hospital care and inpatient care.

Volume of procedures performed by Dr. Christopher G. Tretter, MD for Medicare patients.

doctor visit 833
hospital care 115
inpatient care 115

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Christopher G. Tretter, MD.

Gender
Male 239
Female 53
Ethnicity
Non-Hispanic White 272
Black 0
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 99
From 75 to 84 126
85 and over 55
Less than 65 12

Conditions of Medicare patients treated by Dr. Christopher G. Tretter, MD in 2018

Hypertension 64
High Cholesterol 58
Stroke 5
Ischemic Heart Disease 40
Depression 23
Chronic Kidney Disease 52
Asthma 5
Osteoperosis 7
Atrial Fibrilation 16
Heart Failure 20
Chronic Obstructive Pulmonary Disease 13
Diabetes 29
Dementia 11
Cancer 68

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Christopher G. Tretter, MD treated as a medical oncologist in South Portland, ME during 2019 were hospital care and inpatient care.

Volume of procedures performed by Dr. Christopher G. Tretter, MD for Medicare patients.

doctor visit 878
hospital care 119
inpatient care 119

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Christopher G. Tretter, MD.

Gender
Male 236
Female 57
Ethnicity
Non-Hispanic White 270
Black 0
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 110
From 75 to 84 120
85 and over 0
Less than 65 0

Conditions of Medicare patients treated by Dr. Christopher G. Tretter, MD in 2019

Hypertension 62
High Cholesterol 53
Stroke 4
Ischemic Heart Disease 34
Depression 24
Chronic Kidney Disease 47
Asthma 5
Osteoperosis 8
Atrial Fibrilation 13
Heart Failure 17
Chronic Obstructive Pulmonary Disease 16
Diabetes 29
Dementia 10
Cancer 66

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Christopher G. Tretter, MD treated as a medical oncologist in South Portland, ME during 2020 were hospital care and inpatient care.

Volume of procedures performed by Dr. Christopher G. Tretter, MD for Medicare patients.

doctor visit 651
hospital care 92
inpatient care 92

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Christopher G. Tretter, MD.

Gender
Male 244
Female 75
Ethnicity
Non-Hispanic White 287
Black 0
Hispanic 0
Asian 0
Other 12
Native American 0
Age
From 65 to 74 115
From 75 to 84 127
85 and over 57
Less than 65 20

Conditions of Medicare patients treated by Dr. Christopher G. Tretter, MD in 2020

Hypertension 60
High Cholesterol 49
Stroke 0
Ischemic Heart Disease 33
Depression 22
Chronic Kidney Disease 40
Asthma 6
Osteoperosis 5
Atrial Fibrilation 11
Heart Failure 17
Chronic Obstructive Pulmonary Disease 14
Diabetes 30
Dementia 10
Cancer 65

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Christopher G. Tretter, MD treated as a medical oncologist in South Portland, ME during 2021 were hospital care and inpatient care.

Volume of procedures performed by Dr. Christopher G. Tretter, MD for Medicare patients.

doctor visit 810
hospital care 100
inpatient care 100

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Christopher G. Tretter, MD.

Gender
Male 246
Female 44
Ethnicity
Non-Hispanic White 265
Black 0
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 95
From 75 to 84 124
85 and over 60
Less than 65 11

Conditions of Medicare patients treated by Dr. Christopher G. Tretter, MD in 2021

Hypertension 61
High Cholesterol 53
Stroke 4
Ischemic Heart Disease 39
Depression 23
Chronic Kidney Disease 42
Asthma 6
Osteoperosis 4
Atrial Fibrilation 16
Heart Failure 18
Chronic Obstructive Pulmonary Disease 11
Diabetes 32
Dementia 9
Cancer 69

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Christopher G. Tretter, MD treated as a medical oncologist in South Portland, ME during 2022 were hospital care and inpatient care.

Volume of procedures performed by Dr. Christopher G. Tretter, MD for Medicare patients.

doctor visit 848
hospital care 92
inpatient care 92

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Christopher G. Tretter, MD.

Gender
Male 242
Female 47
Ethnicity
Non-Hispanic White 261
Black 0
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 106
From 75 to 84 123
85 and over 49
Less than 65 11

Conditions of Medicare patients treated by Dr. Christopher G. Tretter, MD in 2022

Hypertension 71
High Cholesterol 68
Stroke 8
Ischemic Heart Disease 30
Depression 16
Chronic Kidney Disease 35
Asthma 5
Osteoperosis 6
Atrial Fibrilation 20
Heart Failure 12
Chronic Obstructive Pulmonary Disease 14
Diabetes 30
Dementia 6
Cancer 75

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Christopher G. Tretter, MD for Medicare patients.

The highest averages for the top procedures that Dr. Christopher G. Tretter, MD treated as a medical oncologist in South Portland, ME were hospital care and inpatient care.

doctor visit 796
hospital care 108
inpatient care 108

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Christopher G. Tretter, MD.

Gender
Male 239
Female 51
Ethnicity
Black / African American 0
Asian / Pacific Islander 0
Non-Hispanic White 270
Native American / Alaskan Native 0
Hispanic 0
Other 1
Age
75 to 84 114
85 and over 50
Less than 65 12
65 to 74 105

Average of Total of Conditions of Medicare patients treated by Dr. Christopher G. Tretter, MD From 2012 - 2022

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

Hypertension 60
High Cholesterol 48
Stroke 3
Ischemic Heart Disease 33
Depression 18
Chronic Kidney Disease 40
Asthma 6
Osteoporosis 5
Heart Failure 15
Chronic Obstructive Pulmonary Disease 14
Diabetes 26
Atrial Fibrillation 13
Dementia 7
Cancer 60

Education & Training

Dr. Christopher G. Tretter, MD graduated from McGill University Faculty of Medicine in 1994. He completed residency at Royal Victoria Hospital GME, Internal Medicine. He is certified by the Board Certification: Medical Oncology and has a state license in Maine.

Medical School: McGill University Faculty of Medicine (1994)

Residency: Royal Victoria Hospital GME, Internal Medicine (1997)

Board Certification: Board Certification: Medical Oncology (2000)

Licensed In: Maine

Affiliations & Hospitals

Dr. Christopher G. Tretter, MD is associated with these hospitals and organizations:

MaineHealth
MaineHealth Maine Medical Center
MaineHealth Accountable Care Organization

Ratings & Reviews

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General Payments

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

Payments by Company
Seagen Inc. $184
$184
Janssen Biotech, Inc. $79 Erleada
$79
Pfizer Inc. $26 INLYTA
$26
Types of Payments
Education $289

Research Payments

Dr. Christopher G. Tretter, MD has received 67 research payments totaling $35,594.

Biography

Dr. Christopher Tretter practices adult hematology, adult oncology, and medical oncology in South Portland, ME. Dr. Tretter graduated from McGill University Faculty of Medicine. He is affiliated with MaineHealth.

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