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Dr. Ramarathinam Nagarajan, MD PHD

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Specializes in: Allergy & Immunology
Professional interests include: asthma, allergies
825 Nicollet Mall 221
Minneapolis, MN 55402

Dr. Ramarathinam Nagarajan, MD PHD is an allergist and immunologist in Minneapolis, MN specializing in allergy & immunology.

View Doctor's Full Profile (612) 339-0807

Office Locations

825 Nicollet Mall 221
Minneapolis, MN 55402
(612) 339-0807
(612) 339-1854
open_in_new

Some issues Dr. Ramarathinam Nagarajan, MD PHD can help you with:

Asthma

Asthma is a chronic lung disease where the tissue and airways of the lungs become extremely sensitive to certain substances. When these substances are breathed in, the lungs become inflamed. The muscles around the airways tighten and squeeze the lungs, and passages within the lungs swell and tighten. The airways themselves produce mucus, which further clogs the tightened, swollen airways. A person having an asthma attack finds it very difficult to breathe, and a severe attack can even be fatal.

Asthma affects people of all ages, but people with asthma are most often diagnosed as children. Symptoms can include wheezing, a tight feeling in the chest, shortness of breath, and coughing. Some people have mild symptoms all the time, and some people have no symptoms at all, but everyone with asthma is susceptible to occasional severe attacks or flare-ups of symptoms when they are exposed to triggers. Triggers vary widely but can include:

  • Allergens (dust mites, pet fur, mold, pollen, grass)
  • Irritants (smoke, pollution, dust, chemicals)
  • Viral infections
  • Physical activity, especially outdoors
  • Certain medications or chemicals in foods (aspirin, sulfites)

Treatment for most asthma patients involves three steps. Patients learn what their asthma triggers are and avoid them. They take a daily control medication, usually an inhaled corticosteroid, to reduce inflammation in the lungs. Also, they have rescue medication with them at all times to take in case of a severe attack. These quick-acting inhaled medications relax the muscles around the airways and allow the lungs to open up for air.

There is no cure for asthma, but with treatment it should not interfere with daily life and activities.

Noteworthy Medicare Patient Procedures Performed by Dr. Ramarathinam Nagarajan, MD PHD in 2023

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

Top 5%

By Volume:

subcutaneous allergen immunotherapy

By Affordability:

flu shot
flu vaccine
immunization
intradermal allergy test
vaccines

In 2023, among providers in related specialties within Minnesota, Dr. Ramarathinam Nagarajan, MD PHD performed more subcutaneous allergen immunotherapy (allergy shots) procedures for Medicare patients than 95% of them and he also had a list price for flu shot, flu vaccine, immunization (preventive vaccines), intradermal allergy test, and vaccines that was lower than the list prices billed to Medicare by 95% 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

2013 Medicare Procedure Volume

The top procedures that Dr. Ramarathinam Nagarajan, MD PHD treated as an allergist and immunologist in Minneapolis, MN during 2013 were immunotherapy, injections, skin testing and allergy testing.

Volume of procedures performed by Dr. Ramarathinam Nagarajan, MD PHD for Medicare patients.

allergy testing 159
doctor visit 88
immunotherapy 566
injections 566
skin testing 159

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Ramarathinam Nagarajan, MD PHD.

Gender
Male 59
Female 104
Age
From 65 to 74 73
From 75 to 84 46
85 and over 0
Less than 65 0

Conditions of Medicare patients treated by Dr. Ramarathinam Nagarajan, MD PHD in 2013

The most common conditions of Medicare patients that Dr. Ramarathinam Nagarajan, MD PHD treated during 2013 were hypertension, high cholesterol, asthma and diabetes.

Hypertension 47
High Cholesterol 42
Stroke 0
Ischemic Heart Disease 13
Depression 20
Chronic Kidney Disease 0
Asthma 35
Osteoperosis 0
Atrial Fibrilation 0
Heart Failure 7
Chronic Obstructive Pulmonary Disease 8
Diabetes 21
Dementia 0
Cancer 7

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Ramarathinam Nagarajan, MD PHD treated as an allergist and immunologist in Minneapolis, MN during 2014 were immunotherapy, injections, pulmonary testing and preventive care.

Volume of procedures performed by Dr. Ramarathinam Nagarajan, MD PHD for Medicare patients.

doctor visit 71
immunotherapy 495
injections 495
preventive care 28
pulmonary testing 30
vaccines 28

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Ramarathinam Nagarajan, MD PHD.

Gender
Male 57
Female 89
Age
From 65 to 74 66
From 75 to 84 45
85 and over 0
Less than 65 0

Conditions of Medicare patients treated by Dr. Ramarathinam Nagarajan, MD PHD in 2014

The most common conditions of Medicare patients that Dr. Ramarathinam Nagarajan, MD PHD treated during 2014 were hypertension, high cholesterol, asthma and depression.

Hypertension 50
High Cholesterol 44
Stroke 0
Ischemic Heart Disease 17
Depression 21
Chronic Kidney Disease 0
Asthma 39
Osteoperosis 0
Atrial Fibrilation 0
Heart Failure 0
Chronic Obstructive Pulmonary Disease 8
Diabetes 21
Dementia 0
Cancer 8

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Ramarathinam Nagarajan, MD PHD treated as an allergist and immunologist in Minneapolis, MN during 2015 were immunotherapy and injections.

Volume of procedures performed by Dr. Ramarathinam Nagarajan, MD PHD for Medicare patients.

doctor visit 56
immunotherapy 358
injections 358

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Ramarathinam Nagarajan, MD PHD.

Gender
Male 90
Female 150
Ethnicity
Non-Hispanic White 218
Black 0
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 106
From 75 to 84 80
85 and over 0
Less than 65 0

Conditions of Medicare patients treated by Dr. Ramarathinam Nagarajan, MD PHD in 2015

The most common conditions of Medicare patients that Dr. Ramarathinam Nagarajan, MD PHD treated during 2015 were hypertension, high cholesterol, asthma and depression.

Hypertension 52
High Cholesterol 40
Stroke 0
Ischemic Heart Disease 22
Depression 27
Chronic Kidney Disease 9
Asthma 38
Osteoperosis 12
Atrial Fibrilation 0
Heart Failure 0
Chronic Obstructive Pulmonary Disease 9
Diabetes 21
Dementia 0
Cancer 0

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Ramarathinam Nagarajan, MD PHD treated as an allergist and immunologist in Minneapolis, MN during 2016 were immunotherapy, injections, preventive care and vaccines.

Volume of procedures performed by Dr. Ramarathinam Nagarajan, MD PHD for Medicare patients.

doctor visit 54
immunotherapy 334
injections 334
preventive care 12
pulmonary testing 12
vaccines 12

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Ramarathinam Nagarajan, MD PHD.

Gender
Male 50
Female 74
Age
From 65 to 74 60
From 75 to 84 38
85 and over 0
Less than 65 0

Conditions of Medicare patients treated by Dr. Ramarathinam Nagarajan, MD PHD in 2016

The most common conditions of Medicare patients that Dr. Ramarathinam Nagarajan, MD PHD treated during 2016 were hypertension, asthma, high cholesterol and depression.

Hypertension 53
High Cholesterol 37
Stroke 0
Ischemic Heart Disease 20
Depression 29
Chronic Kidney Disease 12
Asthma 45
Osteoperosis 0
Atrial Fibrilation 0
Heart Failure 0
Chronic Obstructive Pulmonary Disease 11
Diabetes 23
Dementia 0
Cancer 11

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Ramarathinam Nagarajan, MD PHD treated as an allergist and immunologist in Minneapolis, MN during 2017 were immunotherapy and injections.

Volume of procedures performed by Dr. Ramarathinam Nagarajan, MD PHD for Medicare patients.

doctor visit 40
immunotherapy 412
injections 412

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Ramarathinam Nagarajan, MD PHD.

Gender
Male 47
Female 76
Ethnicity
Non-Hispanic White 111
Black 0
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 51
From 75 to 84 44
85 and over 0
Less than 65 0

Conditions of Medicare patients treated by Dr. Ramarathinam Nagarajan, MD PHD in 2017

The most common conditions of Medicare patients that Dr. Ramarathinam Nagarajan, MD PHD treated during 2017 were hypertension, asthma, high cholesterol and depression.

Hypertension 51
High Cholesterol 33
Stroke 0
Ischemic Heart Disease 20
Depression 28
Chronic Kidney Disease 14
Asthma 41
Osteoperosis 0
Atrial Fibrilation 0
Heart Failure 0
Chronic Obstructive Pulmonary Disease 11
Diabetes 21
Dementia 0
Cancer 10

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Ramarathinam Nagarajan, MD PHD treated as an allergist and immunologist in Minneapolis, MN during 2018 were immunotherapy, injections, preventive care and vaccines.

Volume of procedures performed by Dr. Ramarathinam Nagarajan, MD PHD for Medicare patients.

breathing treatment 16
doctor visit 75
immunotherapy 480
injections 480
preventive care 24
vaccines 24

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Ramarathinam Nagarajan, MD PHD.

Gender
Male 51
Female 80
Ethnicity
Non-Hispanic White 115
Black 0
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 0
From 75 to 84 46
85 and over 0
Less than 65 0

Conditions of Medicare patients treated by Dr. Ramarathinam Nagarajan, MD PHD in 2018

The most common conditions of Medicare patients that Dr. Ramarathinam Nagarajan, MD PHD treated during 2018 were hypertension, asthma, high cholesterol and depression.

Hypertension 48
High Cholesterol 34
Stroke 0
Ischemic Heart Disease 17
Depression 25
Chronic Kidney Disease 17
Asthma 34
Osteoperosis 0
Atrial Fibrilation 0
Heart Failure 0
Chronic Obstructive Pulmonary Disease 0
Diabetes 21
Dementia 0
Cancer 10

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Ramarathinam Nagarajan, MD PHD treated as an allergist and immunologist in Minneapolis, MN during 2019 were immunotherapy, injections, skin testing and allergy testing.

Volume of procedures performed by Dr. Ramarathinam Nagarajan, MD PHD for Medicare patients.

allergy testing 545
breathing treatment 15
doctor visit 153
immunotherapy 876
injections 876
minimally invasive procedures 344
preventive care 29
skin testing 545
vaccines 29

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Ramarathinam Nagarajan, MD PHD.

Gender
Male 89
Female 127
Ethnicity
Non-Hispanic White 196
Black 0
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 115
From 75 to 84 54
85 and over 14
Less than 65 33

Conditions of Medicare patients treated by Dr. Ramarathinam Nagarajan, MD PHD in 2019

The most common conditions of Medicare patients that Dr. Ramarathinam Nagarajan, MD PHD treated during 2019 were hypertension, high cholesterol, asthma and depression.

Hypertension 52
High Cholesterol 39
Stroke 0
Ischemic Heart Disease 23
Depression 26
Chronic Kidney Disease 18
Asthma 38
Osteoperosis 7
Atrial Fibrilation 11
Heart Failure 8
Chronic Obstructive Pulmonary Disease 8
Diabetes 20
Dementia 5
Cancer 10

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Ramarathinam Nagarajan, MD PHD treated as an allergist and immunologist in Minneapolis, MN during 2020 were immunotherapy, injections, skin testing and allergy testing.

Volume of procedures performed by Dr. Ramarathinam Nagarajan, MD PHD for Medicare patients.

allergy testing 793
breathing treatment 25
doctor visit 212
immunotherapy 1578
injections 1578
minimally invasive procedures 507
preventive care 32
skin testing 793
vaccines 32

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Ramarathinam Nagarajan, MD PHD.

Gender
Male 110
Female 165
Ethnicity
Non-Hispanic White 255
Black 0
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 138
From 75 to 84 87
85 and over 23
Less than 65 27

Conditions of Medicare patients treated by Dr. Ramarathinam Nagarajan, MD PHD in 2020

The most common conditions of Medicare patients that Dr. Ramarathinam Nagarajan, MD PHD treated during 2020 were hypertension, asthma, high cholesterol and depression.

Hypertension 55
High Cholesterol 34
Stroke 0
Ischemic Heart Disease 24
Depression 24
Chronic Kidney Disease 21
Asthma 41
Osteoperosis 9
Atrial Fibrilation 10
Heart Failure 9
Chronic Obstructive Pulmonary Disease 7
Diabetes 21
Dementia 5
Cancer 9

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Ramarathinam Nagarajan, MD PHD treated as an allergist and immunologist in Minneapolis, MN during 2021 were immunotherapy, injections, skin testing and allergy testing.

Volume of procedures performed by Dr. Ramarathinam Nagarajan, MD PHD for Medicare patients.

allergy testing 884
breathing treatment 14
doctor visit 159
immunotherapy 1789
injections 1789
minimally invasive procedures 587
preventive care 40
skin testing 884
vaccines 40

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Ramarathinam Nagarajan, MD PHD.

Gender
Male 90
Female 134
Ethnicity
Non-Hispanic White 204
Black 0
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 120
From 75 to 84 64
85 and over 17
Less than 65 23

Conditions of Medicare patients treated by Dr. Ramarathinam Nagarajan, MD PHD in 2021

The most common conditions of Medicare patients that Dr. Ramarathinam Nagarajan, MD PHD treated during 2021 were hypertension, asthma, high cholesterol and ischemic heart disease.

Hypertension 53
High Cholesterol 37
Stroke 0
Ischemic Heart Disease 23
Depression 20
Chronic Kidney Disease 21
Asthma 41
Osteoperosis 10
Atrial Fibrilation 10
Heart Failure 12
Chronic Obstructive Pulmonary Disease 9
Diabetes 19
Dementia 6
Cancer 11

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Ramarathinam Nagarajan, MD PHD treated as an allergist and immunologist in Minneapolis, MN during 2022 were immunotherapy, injections, skin testing and allergy testing.

Volume of procedures performed by Dr. Ramarathinam Nagarajan, MD PHD for Medicare patients.

allergy testing 628
doctor visit 117
immunotherapy 1634
injections 1634
minimally invasive procedures 446
preventive care 33
skin testing 628
vaccines 33

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Ramarathinam Nagarajan, MD PHD.

Gender
Male 81
Female 116
Ethnicity
Non-Hispanic White 182
Black 0
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 96
From 75 to 84 68
85 and over 16
Less than 65 17

Conditions of Medicare patients treated by Dr. Ramarathinam Nagarajan, MD PHD in 2022

The most common conditions of Medicare patients that Dr. Ramarathinam Nagarajan, MD PHD treated during 2022 were hypertension, high cholesterol, asthma and depression.

Hypertension 62
High Cholesterol 58
Stroke 0
Ischemic Heart Disease 16
Depression 19
Chronic Kidney Disease 16
Asthma 53
Osteoperosis 14
Atrial Fibrilation 14
Heart Failure 9
Chronic Obstructive Pulmonary Disease 15
Diabetes 19
Dementia 0
Cancer 15

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

The top procedures that Dr. Ramarathinam Nagarajan, MD PHD treated as an allergist and immunologist in Minneapolis, MN during 2023 were immunotherapy, injections, skin testing and allergy testing.

Volume of procedures performed by Dr. Ramarathinam Nagarajan, MD PHD for Medicare patients.

allergy testing 833
doctor visit 114
immunotherapy 1489
injections 1489
minimally invasive procedures 622
preventive care 12
skin testing 833
vaccines 12

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. Ramarathinam Nagarajan, MD PHD.

Gender
Male 79
Female 111
Ethnicity
Non-Hispanic White 174
Black 0
Hispanic 0
Asian 0
Other 0
Native American 0
Age
From 65 to 74 81
From 75 to 84 70
85 and over 20
Less than 65 19

Conditions of Medicare patients treated by Dr. Ramarathinam Nagarajan, MD PHD in 2023

The most common conditions of Medicare patients that Dr. Ramarathinam Nagarajan, MD PHD treated during 2023 were high cholesterol, hypertension, asthma and ischemic heart disease.

Hypertension 62
High Cholesterol 62
Stroke 0
Ischemic Heart Disease 20
Depression 19
Chronic Kidney Disease 15
Asthma 53
Osteoperosis 15
Atrial Fibrilation 15
Heart Failure 9
Chronic Obstructive Pulmonary Disease 18
Diabetes 16
Dementia 0
Cancer 15

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2013 - 2023

Volume of procedures performed by Dr. Ramarathinam Nagarajan, MD PHD for Medicare patients.

The highest averages for the top procedures that Dr. Ramarathinam Nagarajan, MD PHD treated as an allergist and immunologist in Minneapolis, MN were immunotherapy, injections, skin testing and allergy testing.

allergy testing 640
doctor visit 103
immunotherapy 910
injections 910
minimally invasive procedures 501
preventive care 26
pulmonary testing 21
skin testing 640
vaccines 26

Average Medicare Patient Data From 2013 - 2023

Information about Medicare patients treated by Dr. Ramarathinam Nagarajan, MD PHD.

Gender
Male 73
Female 111
Ethnicity
Black / African American 0
Asian / Pacific Islander 0
Non-Hispanic White 132
Native American / Alaskan Native 0
Hispanic 0
Other 0
Age
75 to 84 58
85 and over 8
Less than 65 10
65 to 74 82

Average of Total of Conditions of Medicare patients treated by Dr. Ramarathinam Nagarajan, MD PHD From 2013 - 2023

The highest averages of the most common conditions of Medicare patients that Dr. Ramarathinam Nagarajan, MD PHD treated were hypertension, asthma, high cholesterol and depression.

Hypertension 53
High Cholesterol 41
Stroke 0
Ischemic Heart Disease 19
Depression 23
Chronic Kidney Disease 13
Asthma 41
Osteoporosis 6
Heart Failure 4
Chronic Obstructive Pulmonary Disease 9
Diabetes 20
Atrial Fibrillation 5
Cancer 9
Dementia 1

Education & Training

He has a state license in Minnesota.

Licensed In: Minnesota

Ratings & Reviews

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General Payments

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

Payments by Company
GlaxoSmithKline, LLC. $193 NUCALA
$32 		TRELEGY ELLIPTA
$30
$130
Regeneron Healthcare Solutions, Inc. $141 DUPIXENT
$128 		DUPIXENT DUPILUMAB INJECTION
$13
Octapharma USA, Inc. $135 CUTAQUIG
$81 		Octagam Immunoglobulin Intraveneous 5% Human
$29 		OCTAGAM
$25
Meda Pharmaceuticals, Inc. $132 Aerospan
$121 		Dymista
$11
Pharming Healthcare, Inc. $116 Ruconest
$116
Other $1,326 DUPIXENT
$89 		XOLAIR
$74 		Xhance
$70 		Prolastin-C
$67 		Haegarda
$67 		Other
$959
Types of Payments
Food and Beverage $1,910
Consulting Fee $130
Education $3

Biography

Dr. Ramarathina Nagarajan practices allergy & immunology. In his practice, he is particularly interested in asthma and allergies.

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