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Dr. John Onyemaechi Nnadi, MD

Accepting New Patients

(No ratings)

Specializes in: Adult Infectious Disease
University of Ibadan College of Medicine (1999)
17000 Medical Center Drive
Baton Rouge, LA 70816

Dr. John Onyemaechi Nnadi, MD is an adult infectious disease specialist in Baton Rouge, LA specializing in adult infectious disease. He graduated from University of Ibadan College of Medicine in 1999 and has 27 years of experience. Dr. John Onyemaechi Nnadi, MD is affiliated with Ochsner Health, Ochsner Medical Center, HOMEDICA OF LOUISIANA, LLC, POST ACUTE SPECIALISTS OF TEXAS PA, BAYHEALTH MEDICAL CENTER, INC and STEM MEDICAL GROUP PC.

View Doctor's Full Profile (225) 752-2470

Office Locations

16777 Medical Center Drive
Baton Rouge, LA 70816
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17000 Medical Center Drive
Baton Rouge, LA 70816
(225) 752-2470
open_in_new
7777 Hennessy Boulevard Suite 701
Baton Rouge, LA 70808
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Noteworthy Medicare Patient Procedures Performed by Dr. John Onyemaechi Nnadi, MD in 2023

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

Top 10%

By Volume:

inpatient hospital care

In 2023, Dr. John Onyemaechi Nnadi, MD performed more inpatient hospital care (for patient admitted to hospital) procedures for Medicare patients than 90% of providers in related specialties within Louisiana.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. John Onyemaechi Nnadi, MD treated as an adult infectious disease specialist in Baton Rouge, LA during 2012 were hospital care and inpatient care.

Volume of procedures performed by Dr. John Onyemaechi Nnadi, MD for Medicare patients.

doctor visit 26
hospital care 871
inpatient care 871

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. John Onyemaechi Nnadi, MD treated as an adult infectious disease specialist in Baton Rouge, LA during 2013 were hospital care, inpatient care and outpatient care.

Volume of procedures performed by Dr. John Onyemaechi Nnadi, MD for Medicare patients.

doctor visit 20
hospital care 959
inpatient care 947
outpatient care 12

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. John Onyemaechi Nnadi, MD.

Gender
Male 143
Female 193
Ethnicity
Non-Hispanic White 242
Black 0
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 92
From 75 to 84 87
85 and over 48
Less than 65 109

Conditions of Medicare patients treated by Dr. John Onyemaechi Nnadi, MD in 2013

Hypertension 75
High Cholesterol 60
Stroke 18
Ischemic Heart Disease 54
Depression 45
Chronic Kidney Disease 63
Asthma 13
Osteoperosis 11
Atrial Fibrilation 20
Heart Failure 51
Chronic Obstructive Pulmonary Disease 42
Diabetes 49
Dementia 29
Cancer 12

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. John Onyemaechi Nnadi, MD treated as an adult infectious disease specialist in Baton Rouge, LA during 2014 were hospital care and inpatient care.

Volume of procedures performed by Dr. John Onyemaechi Nnadi, MD for Medicare patients.

doctor visit 68
hospital care 1176
inpatient care 1176

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. John Onyemaechi Nnadi, MD.

Gender
Male 150
Female 193
Ethnicity
Non-Hispanic White 231
Black 0
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 107
From 75 to 84 79
85 and over 47
Less than 65 110

Conditions of Medicare patients treated by Dr. John Onyemaechi Nnadi, MD in 2014

Hypertension 75
High Cholesterol 62
Stroke 14
Ischemic Heart Disease 57
Depression 38
Chronic Kidney Disease 62
Asthma 17
Osteoperosis 10
Atrial Fibrilation 22
Heart Failure 54
Chronic Obstructive Pulmonary Disease 39
Diabetes 52
Dementia 24
Cancer 12

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. John Onyemaechi Nnadi, MD treated as an adult infectious disease specialist in Baton Rouge, LA during 2015 were hospital care, inpatient care and outpatient care.

Volume of procedures performed by Dr. John Onyemaechi Nnadi, MD for Medicare patients.

doctor visit 115
hospital care 1063
inpatient care 1047
outpatient care 16

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. John Onyemaechi Nnadi, MD.

Gender
Male 440
Female 488
Ethnicity
Non-Hispanic White 582
Black 314
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 304
From 75 to 84 208
85 and over 130
Less than 65 286

Conditions of Medicare patients treated by Dr. John Onyemaechi Nnadi, MD in 2015

Hypertension 75
High Cholesterol 67
Stroke 14
Ischemic Heart Disease 58
Depression 38
Chronic Kidney Disease 66
Asthma 28
Osteoperosis 13
Atrial Fibrilation 21
Heart Failure 55
Chronic Obstructive Pulmonary Disease 41
Diabetes 56
Dementia 28
Cancer 14

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. John Onyemaechi Nnadi, MD treated as an adult infectious disease specialist in Baton Rouge, LA during 2016 were hospital care and inpatient care.

Volume of procedures performed by Dr. John Onyemaechi Nnadi, MD for Medicare patients.

doctor visit 104
hospital care 1347
inpatient care 1347

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. John Onyemaechi Nnadi, MD.

Gender
Male 246
Female 260
Ethnicity
Non-Hispanic White 315
Black 179
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 173
From 75 to 84 121
85 and over 57
Less than 65 155

Conditions of Medicare patients treated by Dr. John Onyemaechi Nnadi, MD in 2016

Hypertension 75
High Cholesterol 60
Stroke 17
Ischemic Heart Disease 59
Depression 39
Chronic Kidney Disease 75
Asthma 42
Osteoperosis 10
Atrial Fibrilation 22
Heart Failure 60
Chronic Obstructive Pulmonary Disease 42
Diabetes 55
Dementia 31
Cancer 14

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. John Onyemaechi Nnadi, MD treated as an adult infectious disease specialist in Baton Rouge, LA during 2017 were hospital care, inpatient care and outpatient care.

Volume of procedures performed by Dr. John Onyemaechi Nnadi, MD for Medicare patients.

doctor visit 115
hospital care 846
inpatient care 800
outpatient care 46

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. John Onyemaechi Nnadi, MD.

Gender
Male 166
Female 195
Ethnicity
Non-Hispanic White 216
Black 0
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 124
From 75 to 84 77
85 and over 50
Less than 65 110

Conditions of Medicare patients treated by Dr. John Onyemaechi Nnadi, MD in 2017

Hypertension 75
High Cholesterol 55
Stroke 14
Ischemic Heart Disease 56
Depression 34
Chronic Kidney Disease 68
Asthma 11
Osteoperosis 9
Atrial Fibrilation 17
Heart Failure 48
Chronic Obstructive Pulmonary Disease 36
Diabetes 52
Dementia 30
Cancer 12

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. John Onyemaechi Nnadi, MD treated as an adult infectious disease specialist in Baton Rouge, LA during 2018 were hospital care, inpatient care and outpatient care.

Volume of procedures performed by Dr. John Onyemaechi Nnadi, MD for Medicare patients.

doctor visit 139
hospital care 645
inpatient care 620
outpatient care 25

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. John Onyemaechi Nnadi, MD.

Gender
Male 181
Female 209
Ethnicity
Non-Hispanic White 246
Black 130
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 140
From 75 to 84 94
85 and over 36
Less than 65 120

Conditions of Medicare patients treated by Dr. John Onyemaechi Nnadi, MD in 2018

Hypertension 75
High Cholesterol 66
Stroke 11
Ischemic Heart Disease 55
Depression 37
Chronic Kidney Disease 72
Asthma 10
Osteoperosis 12
Atrial Fibrilation 22
Heart Failure 48
Chronic Obstructive Pulmonary Disease 36
Diabetes 53
Dementia 24
Cancer 14

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. John Onyemaechi Nnadi, MD treated as an adult infectious disease specialist in Baton Rouge, LA during 2019 were hospital care, inpatient care and outpatient care.

Volume of procedures performed by Dr. John Onyemaechi Nnadi, MD for Medicare patients.

doctor visit 122
hospital care 677
inpatient care 648
outpatient care 29

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. John Onyemaechi Nnadi, MD.

Gender
Male 197
Female 203
Ethnicity
Non-Hispanic White 236
Black 144
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 155
From 75 to 84 88
85 and over 41
Less than 65 116

Conditions of Medicare patients treated by Dr. John Onyemaechi Nnadi, MD in 2019

Hypertension 75
High Cholesterol 66
Stroke 10
Ischemic Heart Disease 55
Depression 42
Chronic Kidney Disease 73
Asthma 10
Osteoperosis 12
Atrial Fibrilation 22
Heart Failure 49
Chronic Obstructive Pulmonary Disease 36
Diabetes 47
Dementia 21
Cancer 18

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. John Onyemaechi Nnadi, MD treated as an adult infectious disease specialist in Baton Rouge, LA during 2020 were hospital care, inpatient care and outpatient care.

Volume of procedures performed by Dr. John Onyemaechi Nnadi, MD for Medicare patients.

doctor visit 82
hospital care 402
inpatient care 360
outpatient care 42

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. John Onyemaechi Nnadi, MD.

Gender
Male 148
Female 132
Ethnicity
Non-Hispanic White 149
Black 119
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 97
From 75 to 84 65
85 and over 23
Less than 65 95

Conditions of Medicare patients treated by Dr. John Onyemaechi Nnadi, MD in 2020

Hypertension 75
High Cholesterol 68
Stroke 16
Ischemic Heart Disease 47
Depression 35
Chronic Kidney Disease 73
Asthma 8
Osteoperosis 11
Atrial Fibrilation 22
Heart Failure 46
Chronic Obstructive Pulmonary Disease 26
Diabetes 56
Dementia 23
Cancer 11

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. John Onyemaechi Nnadi, MD treated as an adult infectious disease specialist in Baton Rouge, LA during 2021 were hospital care, inpatient care and outpatient care.

Volume of procedures performed by Dr. John Onyemaechi Nnadi, MD for Medicare patients.

doctor visit 103
hospital care 354
inpatient care 271
outpatient care 83

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. John Onyemaechi Nnadi, MD.

Gender
Male 145
Female 163
Ethnicity
Non-Hispanic White 182
Black 0
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 123
From 75 to 84 68
85 and over 32
Less than 65 85

Conditions of Medicare patients treated by Dr. John Onyemaechi Nnadi, MD in 2021

Hypertension 75
High Cholesterol 73
Stroke 12
Ischemic Heart Disease 55
Depression 38
Chronic Kidney Disease 73
Asthma 13
Osteoperosis 11
Atrial Fibrilation 22
Heart Failure 51
Chronic Obstructive Pulmonary Disease 29
Diabetes 50
Dementia 21
Cancer 12

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. John Onyemaechi Nnadi, MD treated as an adult infectious disease specialist in Baton Rouge, LA during 2022 were hospital care, inpatient care and outpatient care.

Volume of procedures performed by Dr. John Onyemaechi Nnadi, MD for Medicare patients.

doctor visit 107
hospital care 178
inpatient care 132
outpatient care 46

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. John Onyemaechi Nnadi, MD.

Gender
Male 95
Female 122
Ethnicity
Non-Hispanic White 140
Black 0
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 70
From 75 to 84 64
85 and over 23
Less than 65 60

Conditions of Medicare patients treated by Dr. John Onyemaechi Nnadi, MD in 2022

Hypertension 75
High Cholesterol 75
Stroke 14
Ischemic Heart Disease 48
Depression 39
Chronic Kidney Disease 56
Asthma 14
Osteoperosis 19
Atrial Fibrilation 27
Heart Failure 45
Chronic Obstructive Pulmonary Disease 33
Diabetes 46
Dementia 12
Cancer 15

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. John Onyemaechi Nnadi, MD for Medicare patients.

The highest averages for the top procedures that Dr. John Onyemaechi Nnadi, MD treated as an adult infectious disease specialist in Baton Rouge, LA were hospital care, inpatient care and outpatient care.

doctor visit 91
hospital care 774
inpatient care 747
outpatient care 37

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. John Onyemaechi Nnadi, MD.

Gender
Male 173
Female 196
Ethnicity
Black / African American 80
Asian / Pacific Islander 0
Non-Hispanic White 230
Hispanic 0
Native American / Alaskan Native 0
Other 0
Age
75 to 84 86
85 and over 44
Less than 65 113
65 to 74 125

Average of Total of Conditions of Medicare patients treated by Dr. John Onyemaechi Nnadi, MD From 2012 - 2022

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

Hypertension 68
High Cholesterol 59
Stroke 12
Ischemic Heart Disease 49
Depression 35
Chronic Kidney Disease 61
Asthma 15
Osteoporosis 10
Heart Failure 46
Chronic Obstructive Pulmonary Disease 32
Diabetes 46
Atrial Fibrillation 19
Cancer 12
Dementia 22

Education & Training

Dr. John Onyemaechi Nnadi, MD graduated from University of Ibadan College of Medicine in 1999. He completed residency at Harlem Hospital Center. He is certified by the American Board of Internal Medicine - Internal Medicine and has a state license in Louisiana.

Medical School: University of Ibadan College of Medicine (1999)

Residency: Harlem Hospital Center (2009)

Board Certification: American Board of Internal Medicine - Internal Medicine

Licensed In: Louisiana

Affiliations & Hospitals

Dr. John Onyemaechi Nnadi, MD is associated with these hospitals and organizations:

Ochsner Health
Ochsner Medical Center
HOMEDICA OF LOUISIANA, LLC
POST ACUTE SPECIALISTS OF TEXAS PA
BAYHEALTH MEDICAL CENTER, INC
STEM MEDICAL GROUP PC

Ratings & Reviews

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General Payments

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

Payments by Company
The Medicines Company $570 ORBACTIV
$532 		VABOMERE
$33 		MINOCIN IV
$5
Merck Sharp & Dohme Corporation $310 DELSTRIGO
$168 		SIVEXTRO
$95 		ZEPATIER
$28 		ISENTRESS
$19
Allergan Inc. $262 DALVANCE
$217 		AVYCAZ
$45
ViiV Healthcare Company $230 JULUCA
$139 		DOVATO
$62 		TRIUMEQ
$29
Melinta Therapeutics, Inc. $209 MINOCIN
$93 		MENOCIN
$64 		Baxdela
$52
Other $1,124 PREZCOBIX
$152 		Harvoni
$122 		Lupron
$98 		Atherectomy Device
$90 		PREZISTA
$87 		Other
$575
Types of Payments
Food and Beverage $2,496
Education $208

Biography

Dr. John Nnadi is an adult infectious disease specialist in Baton Rouge, LA. He attended the University of Ibadan College of Medicine for medical school and subsequently trained at Harlem Hospital Center for residency. Dr. Nnadi is affiliated with Ochsner Medical Center. According to Ochsner Health, new patients are welcome to contact his office in Baton Rouge, LA.

Other Providers in Baton Rouge, LA