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Home > OR Providers > Emergency Physicians

Dr. Nicholas Markham Leonard, MD

(No ratings)

Specializes in: Emergency Medicine

10180 Se Sunnyside Road
Clackamas, OR 97015

(503) 652-2880

Dr. Nicholas Markham Leonard, MD is an emergency medicine doctor in Clackamas, OR specializing in emergency medicine.

Office Locations

10180 Se Sunnyside Road
Clackamas, OR 97015

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Noteworthy Medicare Patient Procedures Performed by Dr. Nicholas Markham Leonard, MD in 2023

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

Top 5%

By Volume:

impacted ear wax removal

rapid flu test

In 2023, Dr. Nicholas Markham Leonard, MD performed more impacted ear wax removal, and rapid flu test procedures for Medicare patients than 95% of providers in related specialties within Oregon.

Top 10%

By Volume:

lab tests

In 2023, Dr. Nicholas Markham Leonard, MD performed more lab tests procedures for Medicare patients than 90% of providers in related specialties within Oregon.

Top 25%

By Volume:

urinalysis

In 2012, Dr. Nicholas Markham Leonard, MD performed more urinalysis procedures for Medicare patients than 75% of providers in related specialties within Oregon.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Nicholas Markham Leonard, MD treated as an emergency medicine doctor in Clackamas, OR during 2012 were emergency care and lab tests.

Volume of procedures performed by Dr. Nicholas Markham Leonard, MD for Medicare patients.

doctor visit	201
emergency care	76
lab tests	26

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Nicholas Markham Leonard, MD treated as an emergency medicine doctor in Clackamas, OR during 2013 were emergency care and lab tests.

Volume of procedures performed by Dr. Nicholas Markham Leonard, MD for Medicare patients.

doctor visit	246
emergency care	54
lab tests	26

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Nicholas Markham Leonard, MD.

**Gender**
Male	137
Female	181

**Ethnicity**
Non-Hispanic White	178
Black	0
Hispanic	0
Asian	91
Other	27
Native American	0

**Age**
From 65 to 74	178
From 75 to 84	61
85 and over	35
Less than 65	44

Conditions of Medicare patients treated by Dr. Nicholas Markham Leonard, MD in 2013

Hypertension	66
High Cholesterol	57
Stroke	6
Ischemic Heart Disease	24
Depression	17
Chronic Kidney Disease	18
Asthma	6
Osteoperosis	4
Atrial Fibrilation	8
Heart Failure	10
Chronic Obstructive Pulmonary Disease	6
Diabetes	24
Dementia	8
Cancer	6

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Nicholas Markham Leonard, MD treated as an emergency medicine doctor in Clackamas, OR during 2014 were lab tests, emergency care and ear procedures.

Volume of procedures performed by Dr. Nicholas Markham Leonard, MD for Medicare patients.

doctor visit	395
ear procedures	22
emergency care	30
lab tests	110

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Nicholas Markham Leonard, MD.

**Gender**
Male	191
Female	233

**Ethnicity**
Non-Hispanic White	247
Black	0
Hispanic	0
Asian	115
Other	38
Native American	0

**Age**
From 65 to 74	217
From 75 to 84	108
85 and over	46
Less than 65	53

Conditions of Medicare patients treated by Dr. Nicholas Markham Leonard, MD in 2014

Hypertension	56
High Cholesterol	51
Stroke	4
Ischemic Heart Disease	22
Depression	13
Chronic Kidney Disease	16
Asthma	7
Osteoperosis	7
Atrial Fibrilation	8
Heart Failure	8
Chronic Obstructive Pulmonary Disease	4
Diabetes	25
Dementia	5
Cancer	9

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Nicholas Markham Leonard, MD treated as an emergency medicine doctor in Clackamas, OR during 2015 were lab tests and ear procedures.

Volume of procedures performed by Dr. Nicholas Markham Leonard, MD for Medicare patients.

doctor visit	423
ear procedures	17
lab tests	123

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Nicholas Markham Leonard, MD.

**Gender**
Male	330
Female	474

**Ethnicity**
Non-Hispanic White	474
Black	0
Hispanic	0
Asian	208
Other	74
Native American	0

**Age**
From 65 to 74	420
From 75 to 84	222
85 and over	84
Less than 65	78

Conditions of Medicare patients treated by Dr. Nicholas Markham Leonard, MD in 2015

Hypertension	55
High Cholesterol	55
Stroke	4
Ischemic Heart Disease	24
Depression	13
Chronic Kidney Disease	18
Asthma	6
Osteoperosis	7
Atrial Fibrilation	9
Heart Failure	10
Chronic Obstructive Pulmonary Disease	5
Diabetes	24
Dementia	5
Cancer	9

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Nicholas Markham Leonard, MD treated as an emergency medicine doctor in Clackamas, OR during 2016 were lab tests.

Volume of procedures performed by Dr. Nicholas Markham Leonard, MD for Medicare patients.

doctor visit	365
lab tests	61

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Nicholas Markham Leonard, MD.

**Gender**
Male	148
Female	193

**Ethnicity**
Non-Hispanic White	185
Black	0
Hispanic	0
Asian	93
Other	36
Native American	0

**Age**
From 65 to 74	204
From 75 to 84	76
85 and over	32
Less than 65	29

Conditions of Medicare patients treated by Dr. Nicholas Markham Leonard, MD in 2016

Hypertension	57
High Cholesterol	53
Stroke	4
Ischemic Heart Disease	18
Depression	14
Chronic Kidney Disease	21
Asthma	10
Osteoperosis	6
Atrial Fibrilation	8
Heart Failure	9
Chronic Obstructive Pulmonary Disease	6
Diabetes	23
Dementia	5
Cancer	8

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Nicholas Markham Leonard, MD treated as an emergency medicine doctor in Clackamas, OR during 2017 were lab tests.

Volume of procedures performed by Dr. Nicholas Markham Leonard, MD for Medicare patients.

doctor visit	482
lab tests	107

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Nicholas Markham Leonard, MD.

**Gender**
Male	189
Female	258

**Ethnicity**
Non-Hispanic White	237
Black	0
Hispanic	0
Asian	137
Other	47
Native American	0

**Age**
From 65 to 74	255
From 75 to 84	124
85 and over	36
Less than 65	32

Conditions of Medicare patients treated by Dr. Nicholas Markham Leonard, MD in 2017

Hypertension	60
High Cholesterol	46
Stroke	3
Ischemic Heart Disease	24
Depression	14
Chronic Kidney Disease	26
Asthma	8
Osteoperosis	6
Atrial Fibrilation	10
Heart Failure	11
Chronic Obstructive Pulmonary Disease	6
Diabetes	29
Dementia	7
Cancer	9

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Nicholas Markham Leonard, MD treated as an emergency medicine doctor in Clackamas, OR during 2018 were lab tests.

Volume of procedures performed by Dr. Nicholas Markham Leonard, MD for Medicare patients.

doctor visit	437
lab tests	100

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Nicholas Markham Leonard, MD.

**Gender**
Male	186
Female	234

**Ethnicity**
Non-Hispanic White	220
Black	0
Hispanic	0
Asian	137
Other	37
Native American	0

**Age**
From 65 to 74	227
From 75 to 84	120
85 and over	50
Less than 65	23

Conditions of Medicare patients treated by Dr. Nicholas Markham Leonard, MD in 2018

Hypertension	62
High Cholesterol	59
Stroke	5
Ischemic Heart Disease	22
Depression	10
Chronic Kidney Disease	28
Asthma	8
Osteoperosis	9
Atrial Fibrilation	10
Heart Failure	10
Chronic Obstructive Pulmonary Disease	7
Diabetes	27
Dementia	6
Cancer	10

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Nicholas Markham Leonard, MD treated as an emergency medicine doctor in Clackamas, OR during 2019 were lab tests and ear procedures.

Volume of procedures performed by Dr. Nicholas Markham Leonard, MD for Medicare patients.

doctor visit	472
ear procedures	16
lab tests	147

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Nicholas Markham Leonard, MD.

**Gender**
Male	184
Female	267

**Ethnicity**
Non-Hispanic White	238
Black	0
Hispanic	0
Asian	137
Other	45
Native American	0

**Age**
From 65 to 74	255
From 75 to 84	126
85 and over	43
Less than 65	27

Conditions of Medicare patients treated by Dr. Nicholas Markham Leonard, MD in 2019

Hypertension	57
High Cholesterol	61
Stroke	3
Ischemic Heart Disease	22
Depression	16
Chronic Kidney Disease	23
Asthma	7
Osteoperosis	10
Atrial Fibrilation	9
Heart Failure	11
Chronic Obstructive Pulmonary Disease	8
Diabetes	25
Dementia	6
Cancer	10

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Nicholas Markham Leonard, MD treated as an emergency medicine doctor in Clackamas, OR during 2020 were lab tests.

Volume of procedures performed by Dr. Nicholas Markham Leonard, MD for Medicare patients.

doctor visit	325
lab tests	89

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Nicholas Markham Leonard, MD.

**Gender**
Male	160
Female	152

**Ethnicity**
Non-Hispanic White	135
Black	0
Hispanic	0
Asian	116
Other	37
Native American	0

**Age**
From 65 to 74	162
From 75 to 84	94
85 and over	29
Less than 65	27

Conditions of Medicare patients treated by Dr. Nicholas Markham Leonard, MD in 2020

Hypertension	55
High Cholesterol	60
Stroke	0
Ischemic Heart Disease	23
Depression	13
Chronic Kidney Disease	25
Asthma	5
Osteoperosis	6
Atrial Fibrilation	7
Heart Failure	10
Chronic Obstructive Pulmonary Disease	9
Diabetes	29
Dementia	8
Cancer	11

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Nicholas Markham Leonard, MD treated as an emergency medicine doctor in Clackamas, OR during 2021 were lab tests.

Volume of procedures performed by Dr. Nicholas Markham Leonard, MD for Medicare patients.

doctor visit	313
lab tests	49

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Nicholas Markham Leonard, MD.

**Gender**
Male	132
Female	173

**Ethnicity**
Non-Hispanic White	138
Black	0
Hispanic	0
Asian	112
Other	36
Native American	0

**Age**
From 65 to 74	162
From 75 to 84	88
85 and over	37
Less than 65	18

Conditions of Medicare patients treated by Dr. Nicholas Markham Leonard, MD in 2021

Hypertension	59
High Cholesterol	56
Stroke	0
Ischemic Heart Disease	19
Depression	12
Chronic Kidney Disease	31
Asthma	5
Osteoperosis	10
Atrial Fibrilation	10
Heart Failure	16
Chronic Obstructive Pulmonary Disease	5
Diabetes	28
Dementia	6
Cancer	9

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Nicholas Markham Leonard, MD treated as an emergency medicine doctor in Clackamas, OR during 2022 were lab tests and ear procedures.

Volume of procedures performed by Dr. Nicholas Markham Leonard, MD for Medicare patients.

doctor visit	493
ear procedures	14
lab tests	130

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Nicholas Markham Leonard, MD.

**Gender**
Male	177
Female	268

**Ethnicity**
Non-Hispanic White	214
Black	0
Hispanic	0
Asian	156
Other	46
Native American	0

**Age**
From 65 to 74	238
From 75 to 84	148
85 and over	40
Less than 65	19

Conditions of Medicare patients treated by Dr. Nicholas Markham Leonard, MD in 2022

Hypertension	63
High Cholesterol	69
Stroke	3
Ischemic Heart Disease	12
Depression	11
Chronic Kidney Disease	22
Asthma	12
Osteoperosis	11
Atrial Fibrilation	11
Heart Failure	11
Chronic Obstructive Pulmonary Disease	6
Diabetes	25
Dementia	2
Cancer	11

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Nicholas Markham Leonard, MD for Medicare patients.

The highest averages for the top procedures that Dr. Nicholas Markham Leonard, MD treated as an emergency medicine doctor in Clackamas, OR were lab tests, emergency care and ear procedures.

doctor visit	377
ear procedures	17
emergency care	53
lab tests	88

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Nicholas Markham Leonard, MD.

**Gender**
Male	166
Female	221

**Ethnicity**
Black / African American	0
Asian / Pacific Islander	118
Non-Hispanic White	206
Native American / Alaskan Native	0
Hispanic	0
Other	38

**Age**
75 to 84	106
85 and over	39
Less than 65	31
65 to 74	210

Average of Total of Conditions of Medicare patients treated by Dr. Nicholas Markham Leonard, MD From 2012 - 2022

The highest averages of the most common conditions of Medicare patients that Dr. Nicholas Markham Leonard, MD treated were hypertension, high cholesterol, diabetes and chronic kidney disease.

Hypertension	53
High Cholesterol	51
Stroke	2
Ischemic Heart Disease	19
Depression	12
Chronic Kidney Disease	20
Asthma	6
Osteoporosis	6
Heart Failure	9
Chronic Obstructive Pulmonary Disease	5
Diabetes	23
Atrial Fibrillation	8
Dementia	5
Cancer	8

Education & Training

He has a state license in Oregon.

Licensed In: Oregon

Ratings & Reviews

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General Payments

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

**Payments by Company**
Pfizer Inc.	$94 ELIQUIS $94
AbbVie, Inc.	$50 Humira $50

**Types of Payments**
Food and Beverage	$144

Biography

Dr. Nicholas Leonard's specialty is emergency medicine. Dr. Leonard is affiliated with Kauai Medical Clinic. He studied medicine at the University of Alabama at Birmingham School of Medicine.

Select Year:

Dr. Nicholas Markham Leonard, MD

Office Locations

Noteworthy Medicare Patient Procedures Performed by Dr. Nicholas Markham Leonard, MD in 2023

By Volume:

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. Nicholas Markham Leonard, MD in 2013

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

2014 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Nicholas Markham Leonard, MD in 2014

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

2015 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Nicholas Markham Leonard, MD in 2015

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

2016 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Nicholas Markham Leonard, MD in 2016

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

2017 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Nicholas Markham Leonard, MD in 2017

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

2018 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Nicholas Markham Leonard, MD in 2018

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

2019 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Nicholas Markham Leonard, MD in 2019

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

2020 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Nicholas Markham Leonard, MD in 2020

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

2021 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Nicholas Markham Leonard, MD in 2021

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

2022 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Nicholas Markham Leonard, MD 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. Nicholas Markham Leonard, MD From 2012 - 2022

Education & Training

Ratings & Reviews

General Payments

Biography

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