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Home > CA Providers

Dr. Roger Linh Nguyen, MD

(5 Ratings)

Specializes in: Adult Allergy & Immunology

Albert Einstein College of Medicine of Yeshiva University

9746 Westminster Avenue Suite A
Garden Grove, CA 92844

(714) 638-4433

Dr. Roger Linh Nguyen, MD is an allergist in Downey, CA specializing in adult allergy & immunology. He graduated from Albert Einstein College of Medicine of Yeshiva University. Dr. Roger Linh Nguyen, MD is affiliated with PIH Health.

Office Locations

PIH Health

8301 Florence Avenue #104
Downey, CA 90240

(562) 862-1991

(562) 862-4031

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9746 Westminster Avenue Suite A
Garden Grove, CA 92844

(714) 638-4433

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Noteworthy Medicare Patient Procedures Performed by Dr. Roger Linh Nguyen, MD in 2024

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

Top 5%

By Affordability:

allergy skin testing

allergy testing

minimally invasive procedures

percutaneous allergy test

percutaneous procedures

skin testing

In 2024, Dr. Roger Linh Nguyen, MD had a list price for allergy skin testing, allergy testing, minimally invasive procedures, percutaneous allergy test, percutaneous procedures, and skin testing that was lower than the list prices billed to Medicare by 95% of providers in related specialties within California. 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

2012 Medicare Procedure Volume

The top procedures that Dr. Roger Linh Nguyen, MD treated as an allergist in Downey, CA during 2012 were skin testing, minimally invasive procedures, allergy testing and immunotherapy.

Volume of procedures performed by Dr. Roger Linh Nguyen, MD for Medicare patients.

allergy testing	7932
doctor visit	336
immunotherapy	1121
injections	1121
minimally invasive procedures	7932
skin testing	7932

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Roger Linh Nguyen, MD treated as an allergist in Downey, CA during 2013 were skin testing, minimally invasive procedures, allergy testing and immunotherapy.

Volume of procedures performed by Dr. Roger Linh Nguyen, MD for Medicare patients.

allergy testing	5906
doctor visit	306
immunotherapy	717
injections	717
minimally invasive procedures	5906
skin testing	5906

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Roger Linh Nguyen, MD.

**Gender**
Male	86
Female	54

**Ethnicity**
Non-Hispanic White	0
Black	0
Hispanic	0
Asian	119
Other	0
Native American	0

**Age**
From 65 to 74	65
From 75 to 84	56
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Roger Linh Nguyen, MD in 2013

Hypertension	75
High Cholesterol	75
Stroke	0
Ischemic Heart Disease	48
Depression	15
Chronic Kidney Disease	29
Asthma	31
Osteoperosis	13
Atrial Fibrilation	0
Heart Failure	14
Chronic Obstructive Pulmonary Disease	24
Diabetes	48
Dementia	8
Cancer	0

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Roger Linh Nguyen, MD treated as an allergist in Downey, CA during 2014 were skin testing, minimally invasive procedures, allergy testing and immunotherapy.

Volume of procedures performed by Dr. Roger Linh Nguyen, MD for Medicare patients.

allergy testing	4469
doctor visit	285
immunotherapy	859
injections	859
minimally invasive procedures	4469
skin testing	4469

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Roger Linh Nguyen, MD.

**Gender**
Male	54
Female	51

**Ethnicity**
Non-Hispanic White	0
Black	0
Hispanic	0
Asian	83
Other	0
Native American	0

**Age**
From 65 to 74	50
From 75 to 84	40
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Roger Linh Nguyen, MD in 2014

Hypertension	75
High Cholesterol	75
Stroke	0
Ischemic Heart Disease	42
Depression	14
Chronic Kidney Disease	21
Asthma	40
Osteoperosis	16
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	17
Diabetes	43
Dementia	0
Cancer	10

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Roger Linh Nguyen, MD treated as an allergist in Downey, CA during 2015 were skin testing, minimally invasive procedures, allergy testing and immunotherapy.

Volume of procedures performed by Dr. Roger Linh Nguyen, MD for Medicare patients.

allergy testing	4118
doctor visit	294
immunotherapy	765
injections	765
minimally invasive procedures	4118
skin testing	4118

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Roger Linh Nguyen, MD.

**Gender**
Male	100
Female	140

**Ethnicity**
Non-Hispanic White	42
Black	0
Hispanic	0
Asian	150
Other	0
Native American	0

**Age**
From 65 to 74	106
From 75 to 84	88
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Roger Linh Nguyen, MD in 2015

Hypertension	75
High Cholesterol	75
Stroke	0
Ischemic Heart Disease	43
Depression	16
Chronic Kidney Disease	31
Asthma	43
Osteoperosis	13
Atrial Fibrilation	0
Heart Failure	21
Chronic Obstructive Pulmonary Disease	17
Diabetes	47
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Roger Linh Nguyen, MD treated as an allergist in Downey, CA during 2016 were skin testing, minimally invasive procedures, allergy testing and immunotherapy.

Volume of procedures performed by Dr. Roger Linh Nguyen, MD for Medicare patients.

allergy testing	6266
doctor visit	339
immunotherapy	1107
injections	1107
minimally invasive procedures	6266
skin testing	6266

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Roger Linh Nguyen, MD.

**Gender**
Male	56
Female	67

**Ethnicity**
Non-Hispanic White	28
Black	0
Hispanic	18
Asian	66
Other	0
Native American	0

**Age**
From 65 to 74	55
From 75 to 84	43
85 and over	11
Less than 65	14

Conditions of Medicare patients treated by Dr. Roger Linh Nguyen, MD in 2016

Hypertension	75
High Cholesterol	72
Stroke	0
Ischemic Heart Disease	36
Depression	12
Chronic Kidney Disease	28
Asthma	32
Osteoperosis	13
Atrial Fibrilation	0
Heart Failure	17
Chronic Obstructive Pulmonary Disease	21
Diabetes	50
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Roger Linh Nguyen, MD treated as an allergist in Downey, CA during 2017 were skin testing, minimally invasive procedures, allergy testing and immunotherapy.

Volume of procedures performed by Dr. Roger Linh Nguyen, MD for Medicare patients.

allergy testing	3805
doctor visit	206
immunotherapy	686
injections	686
minimally invasive procedures	3805
skin testing	3805

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Roger Linh Nguyen, MD.

**Gender**
Male	41
Female	64

**Ethnicity**
Non-Hispanic White	22
Black	0
Hispanic	0
Asian	55
Other	0
Native American	0

**Age**
From 65 to 74	38
From 75 to 84	43
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Roger Linh Nguyen, MD in 2017

Hypertension	75
High Cholesterol	68
Stroke	0
Ischemic Heart Disease	31
Depression	22
Chronic Kidney Disease	44
Asthma	28
Osteoperosis	23
Atrial Fibrilation	0
Heart Failure	21
Chronic Obstructive Pulmonary Disease	20
Diabetes	48
Dementia	14
Cancer	0

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Roger Linh Nguyen, MD treated as an allergist in Downey, CA during 2018 were skin testing, minimally invasive procedures, allergy testing and immunotherapy.

Volume of procedures performed by Dr. Roger Linh Nguyen, MD for Medicare patients.

allergy testing	4342
doctor visit	235
immunotherapy	761
injections	761
minimally invasive procedures	4342
skin testing	4342

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Roger Linh Nguyen, MD.

**Gender**
Male	40
Female	75

**Ethnicity**
Non-Hispanic White	0
Black	0
Hispanic	24
Asian	63
Other	0
Native American	0

**Age**
From 65 to 74	52
From 75 to 84	34
85 and over	16
Less than 65	13

Conditions of Medicare patients treated by Dr. Roger Linh Nguyen, MD in 2018

Hypertension	75
High Cholesterol	75
Stroke	0
Ischemic Heart Disease	37
Depression	20
Chronic Kidney Disease	44
Asthma	29
Osteoperosis	23
Atrial Fibrilation	10
Heart Failure	20
Chronic Obstructive Pulmonary Disease	19
Diabetes	52
Dementia	18
Cancer	0

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Roger Linh Nguyen, MD treated as an allergist in Downey, CA during 2019 were skin testing, minimally invasive procedures, allergy testing and immunotherapy.

Volume of procedures performed by Dr. Roger Linh Nguyen, MD for Medicare patients.

allergy testing	4328
doctor visit	205
immunotherapy	841
injections	841
minimally invasive procedures	4328
skin testing	4328

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Roger Linh Nguyen, MD.

**Gender**
Male	39
Female	69

**Ethnicity**
Non-Hispanic White	0
Black	0
Hispanic	26
Asian	64
Other	0
Native American	0

**Age**
From 65 to 74	51
From 75 to 84	31
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Roger Linh Nguyen, MD in 2019

Hypertension	75
High Cholesterol	75
Stroke	0
Ischemic Heart Disease	34
Depression	18
Chronic Kidney Disease	41
Asthma	21
Osteoperosis	21
Atrial Fibrilation	0
Heart Failure	24
Chronic Obstructive Pulmonary Disease	18
Diabetes	48
Dementia	13
Cancer	0

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Roger Linh Nguyen, MD treated as an allergist in Downey, CA during 2020 were skin testing, minimally invasive procedures, allergy testing and immunotherapy.

Volume of procedures performed by Dr. Roger Linh Nguyen, MD for Medicare patients.

allergy testing	2995
doctor visit	121
immunotherapy	225
injections	225
minimally invasive procedures	2995
skin testing	2995

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Roger Linh Nguyen, MD.

**Gender**
Male	21
Female	39

**Ethnicity**
Non-Hispanic White	0
Black	0
Hispanic	0
Asian	39
Other	0
Native American	0

**Age**
From 65 to 74	37
From 75 to 84	0
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Roger Linh Nguyen, MD in 2020

Hypertension	75
High Cholesterol	75
Stroke	0
Ischemic Heart Disease	35
Depression	23
Chronic Kidney Disease	40
Asthma	28
Osteoperosis	25
Atrial Fibrilation	0
Heart Failure	20
Chronic Obstructive Pulmonary Disease	0
Diabetes	50
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Roger Linh Nguyen, MD treated as an allergist in Downey, CA during 2021 were skin testing, minimally invasive procedures, allergy testing and immunotherapy.

Volume of procedures performed by Dr. Roger Linh Nguyen, MD for Medicare patients.

allergy testing	4134
doctor visit	158
immunotherapy	336
injections	336
minimally invasive procedures	4134
skin testing	4134

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Roger Linh Nguyen, MD.

**Gender**
Male	34
Female	40

**Ethnicity**
Non-Hispanic White	0
Black	0
Hispanic	0
Asian	51
Other	0
Native American	0

**Age**
From 65 to 74	43
From 75 to 84	0
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Roger Linh Nguyen, MD in 2021

Hypertension	75
High Cholesterol	75
Stroke	0
Ischemic Heart Disease	36
Depression	22
Chronic Kidney Disease	43
Asthma	28
Osteoperosis	26
Atrial Fibrilation	0
Heart Failure	22
Chronic Obstructive Pulmonary Disease	0
Diabetes	54
Dementia	16
Cancer	0

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Roger Linh Nguyen, MD treated as an allergist in Downey, CA during 2022 were skin testing, minimally invasive procedures, allergy testing and immunotherapy.

Volume of procedures performed by Dr. Roger Linh Nguyen, MD for Medicare patients.

allergy testing	1983
doctor visit	105
immunotherapy	335
injections	335
minimally invasive procedures	1983
skin testing	1983

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Roger Linh Nguyen, MD.

**Gender**
Male	34
Female	39

**Ethnicity**
Non-Hispanic White	0
Black	0
Hispanic	0
Asian	51
Other	0
Native American	0

**Age**
From 65 to 74	47
From 75 to 84	0
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Roger Linh Nguyen, MD in 2022

Hypertension	75
High Cholesterol	75
Stroke	0
Ischemic Heart Disease	0
Depression	19
Chronic Kidney Disease	26
Asthma	26
Osteoperosis	21
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	55
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

The top procedures that Dr. Roger Linh Nguyen, MD treated as an allergist in Downey, CA during 2023 were skin testing, minimally invasive procedures, allergy testing and immunotherapy.

Volume of procedures performed by Dr. Roger Linh Nguyen, MD for Medicare patients.

allergy testing	4594
doctor visit	155
immunotherapy	321
injections	321
minimally invasive procedures	4594
skin testing	4594

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. Roger Linh Nguyen, MD.

**Gender**
Male	35
Female	43

**Ethnicity**
Non-Hispanic White	0
Black	0
Hispanic	0
Asian	60
Other	0
Native American	0

**Age**
From 65 to 74	50
From 75 to 84	0
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Roger Linh Nguyen, MD in 2023

Hypertension	75
High Cholesterol	75
Stroke	0
Ischemic Heart Disease	23
Depression	14
Chronic Kidney Disease	33
Asthma	32
Osteoperosis	28
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	23
Diabetes	51
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2024 Medicare Procedure Volume

The top procedures that Dr. Roger Linh Nguyen, MD treated as an allergist in Downey, CA during 2024 were skin testing, minimally invasive procedures and allergy testing.

Volume of procedures performed by Dr. Roger Linh Nguyen, MD for Medicare patients.

allergy testing	1866
doctor visit	84
minimally invasive procedures	1866
skin testing	1866

2024 Medicare Patient Data

Information about Medicare patients treated by Dr. Roger Linh Nguyen, MD.

**Gender**
Male	18
Female	41

**Ethnicity**
Non-Hispanic White	0
Black	0
Hispanic	0
Asian	48
Other	0
Native American	0

**Age**
From 65 to 74	36
From 75 to 84	0
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Roger Linh Nguyen, MD in 2024

Hypertension	75
High Cholesterol	75
Stroke	0
Ischemic Heart Disease	31
Depression	0
Chronic Kidney Disease	34
Asthma	36
Osteoperosis	44
Atrial Fibrilation	0
Heart Failure	19
Chronic Obstructive Pulmonary Disease	25
Diabetes	41
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2024

Volume of procedures performed by Dr. Roger Linh Nguyen, MD for Medicare patients.

The highest averages for the top procedures that Dr. Roger Linh Nguyen, MD treated as an allergist in Downey, CA were skin testing, allergy testing, minimally invasive procedures and immunotherapy.

allergy testing	4364
doctor visit	217
immunotherapy	672
injections	672
minimally invasive procedures	4364
skin testing	4364

Average Medicare Patient Data From 2012 - 2024

Information about Medicare patients treated by Dr. Roger Linh Nguyen, MD.

**Gender**
Female	55
Male	42

**Ethnicity**
Black / African American	0
Asian / Pacific Islander	65
Non-Hispanic White	7
Native American / Alaskan Native	0
Hispanic	5
Other	0

**Age**
75 to 84	25
85 and over	2
Less than 65	2
65 to 74	48

Average of Total of Conditions of Medicare patients treated by Dr. Roger Linh Nguyen, MD From 2012 - 2024

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

Hypertension	69
High Cholesterol	68
Stroke	0
Ischemic Heart Disease	30
Depression	15
Chronic Kidney Disease	31
Asthma	28
Osteoporosis	20
Heart Failure	13
Chronic Obstructive Pulmonary Disease	14
Diabetes	45
Atrial Fibrillation	0
Dementia	5
Cancer	0

Education & Training

Dr. Roger Linh Nguyen, MD graduated from Albert Einstein College of Medicine of Yeshiva University. He completed residency at St. Mary Medical Center, Long Beach. He has a state license in California.

Medical School: Albert Einstein College of Medicine of Yeshiva University

Residency: St. Mary Medical Center, Long Beach

Licensed In: California

Affiliations & Hospitals

Dr. Roger Linh Nguyen, MD is associated with these hospitals and organizations:

PIH Health

Ratings & Reviews

Dr. Roger Linh Nguyen, MD has an average of 2.0 out of 5 stars based on 5 ratings. We collect ratings and reviews of Dr. Roger Linh Nguyen, MD from all over the web to help you find the right in Downey, CA.

Overall Rating

(5 Ratings)

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General Payments

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

**Payments by Company**
AstraZeneca Pharmaceuticals LP	$2,367 FASENRA $1,405	TEZSPIRE $662	AIRSUPRA $231	SYMBICORT $24	$45
Regeneron Healthcare Solutions, Inc.	$1,436 DUPIXENT $1,436
GlaxoSmithKline, LLC.	$1,314 NUCALA $710	TRELEGY ELLIPTA $243	BREO $220	ARNUITY ELLIPTA $126	AREXVY $15
GENZYME CORPORATION	$1,121 DUPIXENT $1,121
Pfizer Inc.	$527 EUCRISA $513	COMIRNATY $15
Other	$2,438 GRASTEK $346	OPZELURA $274	TEZSPIRE $265	XOLAIR $222	ADBRY $208	Other $1,123

**Types of Payments**
Food and Beverage	$8,952
Consulting Fee	$150
Education	$102

Biography

Dr. Roger Nguyen practices adult allergy & immunology in Garden Grove, CA and Downey, CA. The average patient rating for Dr. Nguyen is 2.0 stars (out of 5). Dr. Nguyen is affiliated with PIH Health. He attended Albert Einstein College of Medicine of Yeshiva University and then went on to complete his residency at St. Mary Medical Center, Long Beach. He speaks Vietnamese.