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Home > CO Providers > Allergists & Immunologists

Dr. Leon Samuel Greos, MD

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Specializes in: Allergy & Immunology

13111 E Briarwood Avenue Suite 340
Centennial, CO 80112

(303) 632-3694

Dr. Leon Samuel Greos, MD is an allergist and immunologist in Centennial, CO specializing in allergy & immunology.

Office Locations

13111 E Briarwood Avenue Suite 340
Centennial, CO 80112

(303) 632-3694

(303) 632-3692

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In The News

“But right now, the amount of pollen is heavy, said Dr. Leon Greos of the Colorado Allergy & Asthma Centers.”—"Allergy season off to an uncomfortable start", The Denver Post, April 2014

“THE AMERICAN LUNG ASSOCIATION OF COLORADO and the COLORADO THORACIC SOCIETY: Dr. Leon Greos will receive the 2006 Colorado Outstanding Clinician Award.”—"People on the move, 9/7", The Denver Post, September 2006

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Leon Samuel Greos, MD treated as an allergist and immunologist in Centennial, CO during 2012 were skin testing, allergy testing, minimally invasive procedures and immunotherapy.

Volume of procedures performed by Dr. Leon Samuel Greos, MD for Medicare patients.

allergy testing	2127
doctor visit	263
immunotherapy	429
injections	429
minimally invasive procedures	1786
preventive care	11
pulmonary testing	46
skin testing	2127
vaccines	11

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Leon Samuel Greos, MD treated as an allergist and immunologist in Centennial, CO during 2013 were skin testing, allergy testing, minimally invasive procedures and immunotherapy.

Volume of procedures performed by Dr. Leon Samuel Greos, MD for Medicare patients.

allergy testing	1750
doctor visit	248
immunotherapy	484
injections	484
minimally invasive procedures	1462
pulmonary testing	26
skin testing	1750

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Leon Samuel Greos, MD.

**Gender**
Male	59
Female	111

**Ethnicity**
Non-Hispanic White	151
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	110
From 75 to 84	32
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Leon Samuel Greos, MD in 2013

Hypertension	45
High Cholesterol	38
Stroke	0
Ischemic Heart Disease	15
Depression	19
Chronic Kidney Disease	15
Asthma	40
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	9
Diabetes	14
Dementia	0
Cancer	8

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Leon Samuel Greos, MD treated as an allergist and immunologist in Centennial, CO during 2014 were skin testing, allergy testing, minimally invasive procedures and immunotherapy.

Volume of procedures performed by Dr. Leon Samuel Greos, MD for Medicare patients.

allergy testing	1977
doctor visit	273
immunotherapy	524
injections	524
minimally invasive procedures	1727
preventive care	11
skin testing	1977
vaccines	11

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Leon Samuel Greos, MD.

**Gender**
Male	74
Female	115

**Ethnicity**
Non-Hispanic White	170
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	123
From 75 to 84	38
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Leon Samuel Greos, MD in 2014

Hypertension	43
High Cholesterol	42
Stroke	0
Ischemic Heart Disease	19
Depression	15
Chronic Kidney Disease	9
Asthma	46
Osteoperosis	7
Atrial Fibrilation	0
Heart Failure	6
Chronic Obstructive Pulmonary Disease	11
Diabetes	12
Dementia	0
Cancer	10

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Leon Samuel Greos, MD treated as an allergist and immunologist in Centennial, CO during 2015 were skin testing, allergy testing, minimally invasive procedures and immunotherapy.

Volume of procedures performed by Dr. Leon Samuel Greos, MD for Medicare patients.

allergy testing	2008
doctor visit	283
immunotherapy	588
injections	588
minimally invasive procedures	1649
pulmonary testing	24
skin testing	2008

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Leon Samuel Greos, MD.

**Gender**
Male	142
Female	228

**Ethnicity**
Non-Hispanic White	340
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	244
From 75 to 84	72
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Leon Samuel Greos, MD in 2015

Hypertension	44
High Cholesterol	39
Stroke	0
Ischemic Heart Disease	18
Depression	19
Chronic Kidney Disease	9
Asthma	46
Osteoperosis	6
Atrial Fibrilation	6
Heart Failure	6
Chronic Obstructive Pulmonary Disease	10
Diabetes	15
Dementia	0
Cancer	10

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Leon Samuel Greos, MD treated as an allergist and immunologist in Centennial, CO during 2016 were skin testing, allergy testing, minimally invasive procedures and immunotherapy.

Volume of procedures performed by Dr. Leon Samuel Greos, MD for Medicare patients.

allergy testing	2282
doctor visit	378
immunotherapy	695
injections	695
minimally invasive procedures	1959
pulmonary testing	28
skin testing	2282

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Leon Samuel Greos, MD.

**Gender**
Male	110
Female	157

**Ethnicity**
Non-Hispanic White	242
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	184
From 75 to 84	51
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Leon Samuel Greos, MD in 2016

Hypertension	44
High Cholesterol	45
Stroke	0
Ischemic Heart Disease	23
Depression	19
Chronic Kidney Disease	16
Asthma	51
Osteoperosis	5
Atrial Fibrilation	5
Heart Failure	7
Chronic Obstructive Pulmonary Disease	12
Diabetes	17
Dementia	5
Cancer	10

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Leon Samuel Greos, MD treated as an allergist and immunologist in Centennial, CO during 2017 were skin testing, allergy testing, minimally invasive procedures and immunotherapy.

Volume of procedures performed by Dr. Leon Samuel Greos, MD for Medicare patients.

allergy testing	2406
doctor visit	320
immunotherapy	535
injections	535
minimally invasive procedures	2126
skin testing	2406

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Leon Samuel Greos, MD.

**Gender**
Male	80
Female	144

**Ethnicity**
Non-Hispanic White	204
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	148
From 75 to 84	44
85 and over	11
Less than 65	21

Conditions of Medicare patients treated by Dr. Leon Samuel Greos, MD in 2017

Hypertension	47
High Cholesterol	38
Stroke	0
Ischemic Heart Disease	20
Depression	21
Chronic Kidney Disease	19
Asthma	41
Osteoperosis	9
Atrial Fibrilation	6
Heart Failure	7
Chronic Obstructive Pulmonary Disease	12
Diabetes	17
Dementia	0
Cancer	9

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Leon Samuel Greos, MD treated as an allergist and immunologist in Centennial, CO during 2018 were skin testing, allergy testing, minimally invasive procedures and immunotherapy.

Volume of procedures performed by Dr. Leon Samuel Greos, MD for Medicare patients.

allergy testing	2794
doctor visit	344
immunotherapy	752
injections	752
minimally invasive procedures	2392
skin testing	2794

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Leon Samuel Greos, MD.

**Gender**
Male	95
Female	157

**Ethnicity**
Non-Hispanic White	235
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	163
From 75 to 84	50
85 and over	18
Less than 65	21

Conditions of Medicare patients treated by Dr. Leon Samuel Greos, MD in 2018

Hypertension	47
High Cholesterol	40
Stroke	0
Ischemic Heart Disease	21
Depression	18
Chronic Kidney Disease	17
Asthma	41
Osteoperosis	10
Atrial Fibrilation	7
Heart Failure	8
Chronic Obstructive Pulmonary Disease	8
Diabetes	14
Dementia	0
Cancer	8

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Leon Samuel Greos, MD treated as an allergist and immunologist in Centennial, CO during 2019 were skin testing, allergy testing, minimally invasive procedures and immunotherapy.

Volume of procedures performed by Dr. Leon Samuel Greos, MD for Medicare patients.

allergy testing	2333
doctor visit	305
immunotherapy	905
injections	905
minimally invasive procedures	2023
skin testing	2333

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Leon Samuel Greos, MD.

**Gender**
Male	98
Female	137

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

**Age**
From 65 to 74	153
From 75 to 84	52
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Leon Samuel Greos, MD in 2019

Hypertension	51
High Cholesterol	51
Stroke	0
Ischemic Heart Disease	21
Depression	22
Chronic Kidney Disease	19
Asthma	40
Osteoperosis	7
Atrial Fibrilation	6
Heart Failure	8
Chronic Obstructive Pulmonary Disease	7
Diabetes	14
Dementia	0
Cancer	11

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Leon Samuel Greos, MD treated as an allergist and immunologist in Centennial, CO during 2020 were skin testing, allergy testing, minimally invasive procedures and immunotherapy.

Volume of procedures performed by Dr. Leon Samuel Greos, MD for Medicare patients.

allergy testing	2099
doctor visit	276
immunotherapy	778
injections	778
minimally invasive procedures	1768
skin testing	2099

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Leon Samuel Greos, MD.

**Gender**
Male	89
Female	131

**Ethnicity**
Non-Hispanic White	201
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	142
From 75 to 84	53
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Leon Samuel Greos, MD in 2020

Hypertension	50
High Cholesterol	47
Stroke	0
Ischemic Heart Disease	16
Depression	19
Chronic Kidney Disease	15
Asthma	40
Osteoperosis	5
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	7
Diabetes	15
Dementia	5
Cancer	13

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Leon Samuel Greos, MD treated as an allergist and immunologist in Centennial, CO during 2021 were skin testing, allergy testing, minimally invasive procedures and immunotherapy.

Volume of procedures performed by Dr. Leon Samuel Greos, MD for Medicare patients.

allergy testing	2244
doctor visit	272
immunotherapy	743
injections	743
minimally invasive procedures	1888
skin testing	2244

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Leon Samuel Greos, MD.

**Gender**
Male	95
Female	123

**Ethnicity**
Non-Hispanic White	191
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	136
From 75 to 84	62
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Leon Samuel Greos, MD in 2021

Hypertension	52
High Cholesterol	50
Stroke	0
Ischemic Heart Disease	16
Depression	15
Chronic Kidney Disease	16
Asthma	39
Osteoperosis	8
Atrial Fibrilation	0
Heart Failure	5
Chronic Obstructive Pulmonary Disease	6
Diabetes	13
Dementia	0
Cancer	9

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Leon Samuel Greos, MD treated as an allergist and immunologist in Centennial, CO during 2022 were skin testing, allergy testing, minimally invasive procedures and immunotherapy.

Volume of procedures performed by Dr. Leon Samuel Greos, MD for Medicare patients.

allergy testing	4120
doctor visit	412
immunotherapy	1146
injections	1146
minimally invasive procedures	2439
skin testing	4120

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Leon Samuel Greos, MD.

**Gender**
Male	117
Female	177

**Ethnicity**
Non-Hispanic White	262
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	176
From 75 to 84	87
85 and over	11
Less than 65	20

Conditions of Medicare patients treated by Dr. Leon Samuel Greos, MD in 2022

Hypertension	63
High Cholesterol	72
Stroke	4
Ischemic Heart Disease	15
Depression	18
Chronic Kidney Disease	9
Asthma	46
Osteoperosis	17
Atrial Fibrilation	7
Heart Failure	6
Chronic Obstructive Pulmonary Disease	9
Diabetes	14
Dementia	0
Cancer	14

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Leon Samuel Greos, MD for Medicare patients.

The highest averages for the top procedures that Dr. Leon Samuel Greos, MD treated as an allergist and immunologist in Centennial, CO were skin testing, allergy testing, minimally invasive procedures and immunotherapy.

allergy testing	2376
doctor visit	306
immunotherapy	689
injections	689
minimally invasive procedures	1929
preventive care	11
pulmonary testing	31
skin testing	2376
vaccines	11

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Leon Samuel Greos, MD.

**Gender**
Male	87
Female	134

**Ethnicity**
Black / African American	0
Asian / Pacific Islander	0
Non-Hispanic White	200
Native American / Alaskan Native	0
Hispanic	0
Other	0

**Age**
75 to 84	49
85 and over	3
Less than 65	5
65 to 74	143

Average of Total of Conditions of Medicare patients treated by Dr. Leon Samuel Greos, MD From 2012 - 2022

The highest averages of the most common conditions of Medicare patients that Dr. Leon Samuel Greos, MD treated were hypertension, high cholesterol, asthma and depression.

Hypertension	44
High Cholesterol	42
Stroke	0
Ischemic Heart Disease	16
Depression	16
Chronic Kidney Disease	13
Asthma	39
Osteoporosis	6
Heart Failure	4
Chronic Obstructive Pulmonary Disease	8
Diabetes	13
Atrial Fibrillation	3
Dementia	0
Cancer	9

Education & Training

He has a state license in Colorado.

Licensed In: Colorado

Ratings & Reviews

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General Payments

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

**Payments by Company**
Boehringer Ingelheim Pharmaceuticals, Inc.	$2,957 SPIRIVA RESPIMAT $50	$2,907
Optinose US, Inc.	$2,815 Xhance $2,815
Teva Pharmaceuticals USA, Inc.	$1,874 QVAR $1,813	PROAIR $27	ProAir Digihaler $20	AirDuo Digihaler $14
Novartis Pharmaceuticals Corporation	$882 UTIBRON $861	XOLAIR $21
SANOFI US SERVICES INC.	$668 DUPILUMAB $590	$79
Other	$1,145 SYMBICORT $202	XOLAIR $119	Repatha $105	DUPIXENT $103	Niox Mino Device $90	Other $526

**Types of Payments**
Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program	$2,907
Food and Beverage	$2,762
Travel and Lodging	$2,583
Consulting Fee	$2,000
Education	$90

Research Payments

Dr. Leon Samuel Greos, MD has received 980 research payments totaling $2,971,728.

Biography

Dr. Leon Greos is a medical specialist in allergy & immunology. These areas are among his clinical interests: asthma and allergies.

Select Year:

Dr. Leon Samuel Greos, MD

Office Locations

In The News

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. Leon Samuel Greos, MD in 2013

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

2014 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Leon Samuel Greos, MD in 2014

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

2015 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Leon Samuel Greos, MD in 2015

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

2016 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Leon Samuel Greos, MD in 2016

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

2017 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Leon Samuel Greos, MD in 2017

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

2018 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Leon Samuel Greos, MD in 2018

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

2019 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Leon Samuel Greos, MD in 2019

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

2020 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Leon Samuel Greos, MD in 2020

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

2021 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Leon Samuel Greos, MD in 2021

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

2022 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Leon Samuel Greos, 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. Leon Samuel Greos, MD From 2012 - 2022

Education & Training

Ratings & Reviews

General Payments

Research Payments

Biography

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