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Dr. Stephen J. Ierardi, MD

(Dr. Stephen John Ierardi, MD)

(11 Ratings)

Specializes in: Osteopathic Manipulative Medicine and Family Medicine

University of Rochester School of Medicine and Dentistry (1986)

24422 Avenida De La Carlota Suite 272
Laguna Hills, CA 92653

(949) 282-6500

Dr. Stephen J. Ierardi, MD is an osteopath in Laguna Hills, CA specializing in osteopathic manipulative medicine and family medicine. He graduated from University of Rochester School of Medicine and Dentistry in 1986 and has 40 years of experience. Dr. Stephen J. Ierardi, MD is affiliated with Saddleback Medical Center and MemorialCare.

Office Locations

24422 Avenida De La Carlota Suite 272
Laguna Hills, CA 92653

(949) 282-6500

(949) 282-6501

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24411 Health Center Drive Suite 670
Laguna Hills, CA 92653

(949) 452-7755

(949) 452-7750

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In The News

“But Dr. Steve Ierardi, a family practitioner, had an excuse for his fumbling.”—"Disabled: It's Only a Word Till You Try It : Health care: Simulating handicaps show a concerned group just how difficult they are and how much courage, patience and determination it takes to overcome them.", Los Angeles Times, March 2025

“Dr. Stephen Ierardi, family practice doctor at Saddleback Memorial Medical Center in Laguna Hills, says headaches are the most common head-related complaint he gets from patients - everything from...”—"Keep your head on", The Orange County Register, September 2006

“"I think that 'alternative' remedies have emerged for colds and flu because doctors have told patients coldly, 'It's a virus, there's nothing I can do for you, go home,'" said Dr. Stephen Ierardi,...”—"Fighting the cold and flu blues", The Orange County Register, October 2005

Noteworthy Medicare Patient Procedures Performed by Dr. Stephen J. Ierardi, MD in 2024

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

Top 5%

By Volume:

A1C test

complete blood count

diagnostic stool guaiac test

fecal occult blood test

intensive behavioral therapy for obesity

By Affordability:

antigen tests

cholesterol screening

lipid profile

prostate-specific antigen test

thyroid blood test

thyroid function tests

vitamin D test

In 2024, among providers in related specialties within California, Dr. Stephen J. Ierardi, MD performed more A1C test, complete blood count (CBC), diagnostic stool guaiac test (gFOBT), fecal occult blood test (FOBT), intensive behavioral therapy (IBT) for obesity, lab tests, liver panel, screening test, serum folate test, thyroid blood test, total PSA test, uric acid blood test, and urinalysis procedures for Medicare patients than 95% of them and he also had a list price for antigen tests, cholesterol screening, lipid profile, prostate-specific antigen (PSA) test, thyroid blood test, thyroid function tests, and vitamin D test 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.

Top 10%

By Volume:

blood draw

phlebotomy for lab tests

In 2024, Dr. Stephen J. Ierardi, MD performed more blood draw, and phlebotomy for lab tests procedures for Medicare patients than 90% of providers in related specialties within California.

Top 25%

By Affordability:

preventive care

In 2012, Dr. Stephen J. Ierardi, MD had a list price for preventive care that was lower than the list prices billed to Medicare by 75% 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

Volume of procedures performed by Dr. Stephen J. Ierardi, MD for Medicare patients.

doctor visit	143

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

Volume of procedures performed by Dr. Stephen J. Ierardi, MD for Medicare patients.

doctor visit	184

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Stephen J. Ierardi, MD.

**Gender**
Male	53
Female	62

**Ethnicity**
Non-Hispanic White	98
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

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

Conditions of Medicare patients treated by Dr. Stephen J. Ierardi, MD in 2013

Hypertension	54
High Cholesterol	47
Stroke	0
Ischemic Heart Disease	24
Depression	13
Chronic Kidney Disease	0
Asthma	0
Osteoperosis	11
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	13
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

Volume of procedures performed by Dr. Stephen J. Ierardi, MD for Medicare patients.

doctor visit	174

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Stephen J. Ierardi, MD.

**Gender**
Male	57
Female	61

**Ethnicity**
Non-Hispanic White	103
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	70
From 75 to 84	36
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Stephen J. Ierardi, MD in 2014

Hypertension	35
High Cholesterol	39
Stroke	0
Ischemic Heart Disease	20
Depression	12
Chronic Kidney Disease	0
Asthma	0
Osteoperosis	13
Atrial Fibrilation	0
Heart Failure	11
Chronic Obstructive Pulmonary Disease	0
Diabetes	21
Dementia	0
Cancer	12

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Stephen J. Ierardi, MD treated as an osteopath in Laguna Hills, CA during 2015 were preventive care, vaccines and lab tests.

Volume of procedures performed by Dr. Stephen J. Ierardi, MD for Medicare patients.

doctor visit	191
lab tests	12
preventive care	32
vaccines	20

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Stephen J. Ierardi, MD.

**Gender**
Male	120
Female	124

**Ethnicity**
Non-Hispanic White	206
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	140
From 75 to 84	74
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Stephen J. Ierardi, MD in 2015

Hypertension	46
High Cholesterol	43
Stroke	0
Ischemic Heart Disease	22
Depression	11
Chronic Kidney Disease	10
Asthma	11
Osteoperosis	16
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	24
Dementia	0
Cancer	14

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Stephen J. Ierardi, MD treated as an osteopath in Laguna Hills, CA during 2016 were preventive care, lab tests and vaccines.

Volume of procedures performed by Dr. Stephen J. Ierardi, MD for Medicare patients.

doctor visit	223
lab tests	39
preventive care	51
vaccines	12

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Stephen J. Ierardi, MD.

**Gender**
Male	67
Female	67

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

**Age**
From 65 to 74	77
From 75 to 84	33
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Stephen J. Ierardi, MD in 2016

Hypertension	49
High Cholesterol	38
Stroke	0
Ischemic Heart Disease	22
Depression	15
Chronic Kidney Disease	16
Asthma	10
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	8
Chronic Obstructive Pulmonary Disease	0
Diabetes	19
Dementia	0
Cancer	15

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Stephen J. Ierardi, MD treated as an osteopath in Laguna Hills, CA during 2017 were preventive care, lab tests, weight management and mental health therapy.

Volume of procedures performed by Dr. Stephen J. Ierardi, MD for Medicare patients.

doctor visit	216
lab tests	41
mental health therapy	37
preventive care	60
vaccines	19
weight management	37

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Stephen J. Ierardi, MD.

**Gender**
Male	73
Female	65

**Ethnicity**
Non-Hispanic White	118
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	78
From 75 to 84	41
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Stephen J. Ierardi, MD in 2017

Hypertension	54
High Cholesterol	34
Stroke	0
Ischemic Heart Disease	23
Depression	20
Chronic Kidney Disease	30
Asthma	9
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	9
Chronic Obstructive Pulmonary Disease	8
Diabetes	16
Dementia	0
Cancer	16

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Stephen J. Ierardi, MD treated as an osteopath in Laguna Hills, CA during 2018 were weight management, mental health therapy, lab tests and preventive care.

Volume of procedures performed by Dr. Stephen J. Ierardi, MD for Medicare patients.

doctor visit	266
lab tests	40
mental health therapy	41
preventive care	40
weight management	41

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Stephen J. Ierardi, MD.

**Gender**
Male	69
Female	73

**Ethnicity**
Non-Hispanic White	124
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	79
From 75 to 84	46
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Stephen J. Ierardi, MD in 2018

Hypertension	55
High Cholesterol	62
Stroke	0
Ischemic Heart Disease	18
Depression	15
Chronic Kidney Disease	32
Asthma	10
Osteoperosis	10
Atrial Fibrilation	8
Heart Failure	8
Chronic Obstructive Pulmonary Disease	8
Diabetes	16
Dementia	11
Cancer	14

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Stephen J. Ierardi, MD treated as an osteopath in Laguna Hills, CA during 2019 were lab tests, preventive care, weight management and mental health therapy.

Volume of procedures performed by Dr. Stephen J. Ierardi, MD for Medicare patients.

doctor visit	264
lab tests	40
mental health therapy	28
preventive care	40
weight management	28

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Stephen J. Ierardi, MD.

**Gender**
Male	65
Female	61

**Ethnicity**
Non-Hispanic White	107
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	72
From 75 to 84	39
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Stephen J. Ierardi, MD in 2019

Hypertension	59
High Cholesterol	68
Stroke	0
Ischemic Heart Disease	21
Depression	17
Chronic Kidney Disease	38
Asthma	0
Osteoperosis	9
Atrial Fibrilation	0
Heart Failure	11
Chronic Obstructive Pulmonary Disease	0
Diabetes	16
Dementia	12
Cancer	13

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Stephen J. Ierardi, MD treated as an osteopath in Laguna Hills, CA during 2020 were lab tests, preventive care, weight management and mental health therapy.

Volume of procedures performed by Dr. Stephen J. Ierardi, MD for Medicare patients.

doctor visit	267
lab tests	40
mental health therapy	31
preventive care	40
weight management	31

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Stephen J. Ierardi, MD.

**Gender**
Male	65
Female	59

**Ethnicity**
Non-Hispanic White	110
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	68
From 75 to 84	42
85 and over	14
Less than 65	0

Conditions of Medicare patients treated by Dr. Stephen J. Ierardi, MD in 2020

Hypertension	63
High Cholesterol	65
Stroke	0
Ischemic Heart Disease	22
Depression	16
Chronic Kidney Disease	40
Asthma	10
Osteoperosis	10
Atrial Fibrilation	0
Heart Failure	11
Chronic Obstructive Pulmonary Disease	0
Diabetes	19
Dementia	13
Cancer	14

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Stephen J. Ierardi, MD treated as an osteopath in Laguna Hills, CA during 2021 were preventive care, lab tests, weight management and mental health therapy.

Volume of procedures performed by Dr. Stephen J. Ierardi, MD for Medicare patients.

doctor visit	307
lab tests	52
mental health therapy	28
preventive care	65
weight management	28

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Stephen J. Ierardi, MD.

**Gender**
Male	78
Female	67

**Ethnicity**
Non-Hispanic White	127
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	79
From 75 to 84	46
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Stephen J. Ierardi, MD in 2021

Hypertension	62
High Cholesterol	74
Stroke	0
Ischemic Heart Disease	23
Depression	13
Chronic Kidney Disease	39
Asthma	8
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	10
Chronic Obstructive Pulmonary Disease	0
Diabetes	19
Dementia	9
Cancer	10

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Stephen J. Ierardi, MD treated as an osteopath in Laguna Hills, CA during 2022 were lab tests, thyroid function tests, preventive care and blood draw.

Volume of procedures performed by Dr. Stephen J. Ierardi, MD for Medicare patients.

blood draw	63
diabetes management	45
doctor visit	399
lab tests	821
mental health therapy	34
preventive care	140
thyroid function tests	169
weight management	34

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Stephen J. Ierardi, MD.

**Gender**
Male	105
Female	99

**Ethnicity**
Non-Hispanic White	176
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	102
From 75 to 84	67
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Stephen J. Ierardi, MD in 2022

Hypertension	70
High Cholesterol	75
Stroke	8
Ischemic Heart Disease	22
Depression	17
Chronic Kidney Disease	35
Asthma	13
Osteoperosis	14
Atrial Fibrilation	12
Heart Failure	9
Chronic Obstructive Pulmonary Disease	8
Diabetes	29
Dementia	7
Cancer	15

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

The top procedures that Dr. Stephen J. Ierardi, MD treated as an osteopath in Laguna Hills, CA during 2023 were lab tests, thyroid function tests, preventive care and blood draw.

Volume of procedures performed by Dr. Stephen J. Ierardi, MD for Medicare patients.

blood draw	126
diabetes management	84
doctor visit	388
lab tests	1512
mental health therapy	68
preventive care	257
thyroid function tests	345
weight management	68

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. Stephen J. Ierardi, MD.

**Gender**
Male	116
Female	99

**Ethnicity**
Non-Hispanic White	185
Black	0
Hispanic	0
Asian	11
Other	0
Native American	0

**Age**
From 65 to 74	105
From 75 to 84	71
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Stephen J. Ierardi, MD in 2023

Hypertension	73
High Cholesterol	75
Stroke	9
Ischemic Heart Disease	24
Depression	19
Chronic Kidney Disease	31
Asthma	13
Osteoperosis	14
Atrial Fibrilation	13
Heart Failure	8
Chronic Obstructive Pulmonary Disease	8
Diabetes	31
Dementia	5
Cancer	13

Medicare Procedure and Patient Information

2024 Medicare Procedure Volume

The top procedures that Dr. Stephen J. Ierardi, MD treated as an osteopath in Laguna Hills, CA during 2024 were lab tests, thyroid function tests, preventive care and blood draw.

Volume of procedures performed by Dr. Stephen J. Ierardi, MD for Medicare patients.

blood draw	183
chronic care	94
diabetes management	141
doctor visit	423
lab tests	2283
mental health therapy	35
preventive care	405
thyroid function tests	520
vaccines	25
weight management	35

2024 Medicare Patient Data

Information about Medicare patients treated by Dr. Stephen J. Ierardi, MD.

**Gender**
Male	117
Female	101

**Ethnicity**
Non-Hispanic White	182
Black	0
Hispanic	11
Asian	14
Other	0
Native American	0

**Age**
From 65 to 74	103
From 75 to 84	85
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Stephen J. Ierardi, MD in 2024

Hypertension	72
High Cholesterol	75
Stroke	12
Ischemic Heart Disease	26
Depression	20
Chronic Kidney Disease	34
Asthma	8
Osteoperosis	11
Atrial Fibrilation	15
Heart Failure	12
Chronic Obstructive Pulmonary Disease	8
Diabetes	32
Dementia	6
Cancer	14

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2024

Volume of procedures performed by Dr. Stephen J. Ierardi, MD for Medicare patients.

The highest averages for the top procedures that Dr. Stephen J. Ierardi, MD treated as an osteopath in Laguna Hills, CA were lab tests, thyroid function tests, blood draw and preventive care.

blood draw	124
chronic care	94
diabetes management	90
doctor visit	265
lab tests	488
mental health therapy	37
preventive care	113
thyroid function tests	344
vaccines	19
weight management	37

Average Medicare Patient Data From 2012 - 2024

Information about Medicare patients treated by Dr. Stephen J. Ierardi, MD.

**Gender**
Male	75
Female	72

**Ethnicity**
Black / African American	0
Asian / Pacific Islander	1
Non-Hispanic White	127
Native American / Alaskan Native	0
Hispanic	0
Other	0

**Age**
75 to 84	44
85 and over	1
Less than 65	0
65 to 74	79

Average of Total of Conditions of Medicare patients treated by Dr. Stephen J. Ierardi, MD From 2012 - 2024

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

Hypertension	53
High Cholesterol	53
Stroke	2
Ischemic Heart Disease	20
Depression	14
Chronic Kidney Disease	23
Asthma	7
Osteoporosis	8
Heart Failure	7
Chronic Obstructive Pulmonary Disease	3
Diabetes	19
Atrial Fibrillation	3
Cancer	11
Dementia	4

Education & Training

Dr. Stephen J. Ierardi, MD graduated from University of Rochester School of Medicine and Dentistry in 1986. He completed residency at University of California, Irvine Affiliated Hospitals. He has a state license in California.

Medical School: University of Rochester School of Medicine and Dentistry (1986)

Residency: University of California, Irvine Affiliated Hospitals (1989)

Licensed In: California

Affiliations & Hospitals

Dr. Stephen J. Ierardi, MD is associated with these hospitals and organizations:

Saddleback Medical Center

MemorialCare

Ratings & Reviews

Dr. Stephen J. Ierardi, MD has a high overall rating with an average of 4.32 out of 5 stars based on 11 ratings. We collect ratings and reviews of Dr. Stephen J. Ierardi, MD from all over the web to help you find the right in Laguna Hills, CA.

4.32

Overall Rating

(11 Ratings)

Leave a Review

Reviews Left On DocSpot

Overall Rating: 5.0 2023-04-19

Dr. Ierardi takes the time to explain all tests and health issues thoroughly, and is very positive and highly knowledgeable. It’s rare these days to have a doctor spend so much time and focus on one patient.  He’s also very funny and answers your questions, as he loves to educate us on our own health.  Highly recommended!!

General Payments

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

**Payments by Company**
Boehringer Ingelheim Pharmaceuticals, Inc.	$3,859 JARDIANCE $2,591	GLYXAMBI $658	Pradaxa $124	STIOLTO $2	$483
Lilly USA, LLC	$3,061 MOUNJARO $826	TRULICITY $773	JARDIANCE $615	EMGALITY $315	TRADJENTA $101	Other $432
Janssen Pharmaceuticals, Inc	$2,114 XARELTO $1,280	INVOKANA $828	$6
Amgen Inc.	$1,906 Repatha $715	Prolia $550	EVENITY $498	Aimovig $121	KRYSTEXXA $14	Other $9
Pfizer Inc.	$1,763 PREVNAR 13 $362	PREVNAR 20 $300	PREVNAR - 13 $289	LYRICA $249	ELIQUIS $169	Other $394
Other	$12,663 Synthroid $1,347	UBRELVY $1,009	Kerendia $833	Androgel $494	FREESTYLE LIBRE 3 $492	Other $8,487

**Types of Payments**
Food and Beverage	$25,181
Consulting Fee	$127
Education	$40
Travel and Lodging	$18

Biography

Dr. Stephen Ierardi's areas of specialization are family medicine and osteopathic manipulative medicine; he sees patients in Laguna Hills, CA. Before performing his residency at a hospital affiliated with the University of California, Irvine, Dr. Ierardi attended the University of Rochester School of Medicine and Dentistry for medical school. He is affiliated with Saddleback Medical Center.