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Dr. Timothy F. O'Neill, MD

(1 Rating)

Specializes in: Adult Cardiology

5300 Katella Avenue
Los Alamitos, CA 90720

(562) 430-7533

Dr. Timothy F. O'Neill, MD is a cardiologist in Los Alamitos, CA specializing in adult cardiology.

Office Locations

5300 Katella Avenue
Los Alamitos, CA 90720

(562) 430-7533

(562) 430-8055

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Noteworthy Medicare Patient Procedures Performed by Dr. Timothy F. O'Neill, MD in 2023

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

Top 5%

By Affordability:

Holter monitoring

In 2023, Dr. Timothy F. O'Neill, MD had a list price for Holter monitoring 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.

Top 10%

By Affordability:

ambulatory cardiac monitoring

ambulatory monitoring

In 2023, Dr. Timothy F. O'Neill, MD had a list price for ambulatory cardiac monitoring, and ambulatory monitoring that was lower than the list prices billed to Medicare by 90% 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.

Top 25%

By Volume:

inpatient hospital care

By Affordability:

cardiac stress testing

cardiac imaging

echocardiogram

stress testing

In 2012, among providers in related specialties within California, Dr. Timothy F. O'Neill, MD performed more inpatient hospital care (for patient admitted to hospital) procedures for Medicare patients than 75% of them and he also had a list price for cardiac (heart) stress testing, cardiac imaging, echocardiogram (echo), and stress testing that was lower than the list prices billed to Medicare by 75% 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

2012 Medicare Procedure Volume

The top procedures that Dr. Timothy F. O'Neill, MD treated as a cardiologist in Los Alamitos, CA during 2012 were cardiac procedures, hospital care, inpatient care and lab tests.

Volume of procedures performed by Dr. Timothy F. O'Neill, MD for Medicare patients.

ambulatory monitoring	25
cardiac procedures	410
doctor visit	807
hospital care	392
inpatient care	392
lab tests	311
nuclear scan	44
stress testing	133
ultrasound (sonogram)	300

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Timothy F. O'Neill, MD treated as a cardiologist in Los Alamitos, CA during 2013 were hospital care, inpatient care, cardiac procedures and ultrasound (sonogram).

Volume of procedures performed by Dr. Timothy F. O'Neill, MD for Medicare patients.

ambulatory monitoring	31
cardiac procedures	392
doctor visit	839
hospital care	438
inpatient care	438
lab tests	257
minimally invasive procedures	14
nuclear scan	37
stress testing	100
ultrasound (sonogram)	261

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Timothy F. O'Neill, MD.

**Gender**
Male	649
Female	878

**Ethnicity**
Non-Hispanic White	1173
Black	52
Hispanic	156
Asian	118
Other	0
Native American	0

**Age**
From 65 to 74	422
From 75 to 84	529
85 and over	461
Less than 65	115

Conditions of Medicare patients treated by Dr. Timothy F. O'Neill, MD in 2013

Hypertension	75
High Cholesterol	70
Stroke	14
Ischemic Heart Disease	57
Depression	30
Chronic Kidney Disease	41
Asthma	11
Osteoperosis	16
Atrial Fibrilation	31
Heart Failure	42
Chronic Obstructive Pulmonary Disease	28
Diabetes	41
Dementia	29
Cancer	16

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Timothy F. O'Neill, MD treated as a cardiologist in Los Alamitos, CA during 2014 were hospital care, inpatient care, cardiac procedures and lab tests.

Volume of procedures performed by Dr. Timothy F. O'Neill, MD for Medicare patients.

ambulatory monitoring	18
cardiac procedures	347
doctor visit	799
hospital care	383
inpatient care	383
lab tests	257
minimally invasive procedures	11
nuclear scan	23
stress testing	75
ultrasound (sonogram)	254

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Timothy F. O'Neill, MD.

**Gender**
Male	535
Female	648

**Ethnicity**
Non-Hispanic White	921
Black	37
Hispanic	99
Asian	109
Other	0
Native American	0

**Age**
From 65 to 74	338
From 75 to 84	404
85 and over	371
Less than 65	70

Conditions of Medicare patients treated by Dr. Timothy F. O'Neill, MD in 2014

Hypertension	75
High Cholesterol	74
Stroke	17
Ischemic Heart Disease	58
Depression	28
Chronic Kidney Disease	42
Asthma	12
Osteoperosis	15
Atrial Fibrilation	30
Heart Failure	40
Chronic Obstructive Pulmonary Disease	28
Diabetes	44
Dementia	28
Cancer	17

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Timothy F. O'Neill, MD treated as a cardiologist in Los Alamitos, CA during 2015 were hospital care, inpatient care, cardiac procedures and lab tests.

Volume of procedures performed by Dr. Timothy F. O'Neill, MD for Medicare patients.

ambulatory monitoring	13
cardiac procedures	275
doctor visit	769
hospital care	437
inpatient care	437
lab tests	268
stress testing	40
ultrasound (sonogram)	222

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Timothy F. O'Neill, MD.

**Gender**
Male	1032
Female	1328

**Ethnicity**
Non-Hispanic White	1820
Black	76
Hispanic	246
Asian	170
Other	0
Native American	0

**Age**
From 65 to 74	654
From 75 to 84	784
85 and over	772
Less than 65	150

Conditions of Medicare patients treated by Dr. Timothy F. O'Neill, MD in 2015

Hypertension	75
High Cholesterol	73
Stroke	17
Ischemic Heart Disease	56
Depression	29
Chronic Kidney Disease	44
Asthma	19
Osteoperosis	13
Atrial Fibrilation	34
Heart Failure	42
Chronic Obstructive Pulmonary Disease	27
Diabetes	43
Dementia	25
Cancer	16

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Timothy F. O'Neill, MD treated as a cardiologist in Los Alamitos, CA during 2016 were hospital care, inpatient care, lab tests and cardiac procedures.

Volume of procedures performed by Dr. Timothy F. O'Neill, MD for Medicare patients.

ambulatory monitoring	13
cardiac procedures	282
doctor visit	693
hospital care	596
inpatient care	596
lab tests	300
minimally invasive procedures	13
nuclear scan	13
stress testing	56
ultrasound (sonogram)	213

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Timothy F. O'Neill, MD.

**Gender**
Male	401
Female	563

**Ethnicity**
Non-Hispanic White	752
Black	31
Hispanic	75
Asian	83
Other	0
Native American	0

**Age**
From 65 to 74	267
From 75 to 84	325
85 and over	323
Less than 65	49

Conditions of Medicare patients treated by Dr. Timothy F. O'Neill, MD in 2016

Hypertension	75
High Cholesterol	74
Stroke	18
Ischemic Heart Disease	61
Depression	27
Chronic Kidney Disease	47
Asthma	29
Osteoperosis	17
Atrial Fibrilation	34
Heart Failure	42
Chronic Obstructive Pulmonary Disease	28
Diabetes	43
Dementia	25
Cancer	17

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Timothy F. O'Neill, MD treated as a cardiologist in Los Alamitos, CA during 2017 were hospital care, inpatient care, cardiac procedures and ultrasound (sonogram).

Volume of procedures performed by Dr. Timothy F. O'Neill, MD for Medicare patients.

cardiac procedures	304
doctor visit	649
hospital care	629
inpatient care	629
lab tests	219
minimally invasive procedures	13
nuclear scan	18
stress testing	69
ultrasound (sonogram)	235

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Timothy F. O'Neill, MD.

**Gender**
Male	487
Female	594

**Ethnicity**
Non-Hispanic White	803
Black	34
Hispanic	119
Asian	89
Other	0
Native American	0

**Age**
From 65 to 74	286
From 75 to 84	390
85 and over	334
Less than 65	71

Conditions of Medicare patients treated by Dr. Timothy F. O'Neill, MD in 2017

Hypertension	75
High Cholesterol	63
Stroke	16
Ischemic Heart Disease	60
Depression	30
Chronic Kidney Disease	51
Asthma	11
Osteoperosis	16
Atrial Fibrilation	30
Heart Failure	44
Chronic Obstructive Pulmonary Disease	30
Diabetes	45
Dementia	27
Cancer	17

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Timothy F. O'Neill, MD treated as a cardiologist in Los Alamitos, CA during 2018 were hospital care, inpatient care, cardiac procedures and lab tests.

Volume of procedures performed by Dr. Timothy F. O'Neill, MD for Medicare patients.

ambulatory monitoring	18
cardiac procedures	371
doctor visit	742
hospital care	695
inpatient care	695
lab tests	279
minimally invasive procedures	13
nuclear scan	16
stress testing	75
ultrasound (sonogram)	278

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Timothy F. O'Neill, MD.

**Gender**
Male	525
Female	661

**Ethnicity**
Non-Hispanic White	833
Black	46
Hispanic	143
Asian	115
Other	0
Native American	0

**Age**
From 65 to 74	361
From 75 to 84	419
85 and over	322
Less than 65	84

Conditions of Medicare patients treated by Dr. Timothy F. O'Neill, MD in 2018

Hypertension	75
High Cholesterol	74
Stroke	15
Ischemic Heart Disease	54
Depression	29
Chronic Kidney Disease	50
Asthma	10
Osteoperosis	16
Atrial Fibrilation	26
Heart Failure	39
Chronic Obstructive Pulmonary Disease	25
Diabetes	41
Dementia	26
Cancer	18

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Timothy F. O'Neill, MD treated as a cardiologist in Los Alamitos, CA during 2019 were hospital care, inpatient care, cardiac procedures and ultrasound (sonogram).

Volume of procedures performed by Dr. Timothy F. O'Neill, MD for Medicare patients.

ambulatory monitoring	11
cardiac procedures	341
doctor visit	741
hospital care	500
inpatient care	500
lab tests	200
minimally invasive procedures	13
nuclear scan	18
stress testing	78
ultrasound (sonogram)	252

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Timothy F. O'Neill, MD.

**Gender**
Male	504
Female	670

**Ethnicity**
Non-Hispanic White	834
Black	45
Hispanic	131
Asian	121
Other	0
Native American	0

**Age**
From 65 to 74	367
From 75 to 84	402
85 and over	319
Less than 65	86

Conditions of Medicare patients treated by Dr. Timothy F. O'Neill, MD in 2019

Hypertension	75
High Cholesterol	75
Stroke	16
Ischemic Heart Disease	59
Depression	34
Chronic Kidney Disease	52
Asthma	12
Osteoperosis	14
Atrial Fibrilation	29
Heart Failure	39
Chronic Obstructive Pulmonary Disease	27
Diabetes	43
Dementia	27
Cancer	17

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Timothy F. O'Neill, MD treated as a cardiologist in Los Alamitos, CA during 2020 were hospital care, inpatient care, cardiac procedures and ultrasound (sonogram).

Volume of procedures performed by Dr. Timothy F. O'Neill, MD for Medicare patients.

cardiac procedures	321
doctor visit	602
hospital care	629
inpatient care	629
nuclear scan	13
stress testing	43
ultrasound (sonogram)	278

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Timothy F. O'Neill, MD.

**Gender**
Male	440
Female	537

**Ethnicity**
Non-Hispanic White	654
Black	51
Hispanic	128
Asian	111
Other	0
Native American	0

**Age**
From 65 to 74	289
From 75 to 84	362
85 and over	260
Less than 65	66

Conditions of Medicare patients treated by Dr. Timothy F. O'Neill, MD in 2020

Hypertension	75
High Cholesterol	75
Stroke	16
Ischemic Heart Disease	58
Depression	31
Chronic Kidney Disease	53
Asthma	12
Osteoperosis	14
Atrial Fibrilation	28
Heart Failure	42
Chronic Obstructive Pulmonary Disease	26
Diabetes	44
Dementia	29
Cancer	16

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Timothy F. O'Neill, MD treated as a cardiologist in Los Alamitos, CA during 2021 were hospital care, inpatient care, cardiac procedures and ultrasound (sonogram).

Volume of procedures performed by Dr. Timothy F. O'Neill, MD for Medicare patients.

ambulatory monitoring	11
cardiac procedures	371
doctor visit	608
hospital care	616
inpatient care	616
lab tests	157
nuclear scan	13
stress testing	55
ultrasound (sonogram)	305

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Timothy F. O'Neill, MD.

**Gender**
Male	517
Female	638

**Ethnicity**
Non-Hispanic White	787
Black	52
Hispanic	140
Asian	140
Other	0
Native American	0

**Age**
From 65 to 74	334
From 75 to 84	429
85 and over	327
Less than 65	65

Conditions of Medicare patients treated by Dr. Timothy F. O'Neill, MD in 2021

Hypertension	75
High Cholesterol	75
Stroke	16
Ischemic Heart Disease	54
Depression	30
Chronic Kidney Disease	55
Asthma	12
Osteoperosis	15
Atrial Fibrilation	32
Heart Failure	44
Chronic Obstructive Pulmonary Disease	24
Diabetes	45
Dementia	29
Cancer	18

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Timothy F. O'Neill, MD treated as a cardiologist in Los Alamitos, CA during 2022 were hospital care, inpatient care, cardiac procedures and ultrasound (sonogram).

Volume of procedures performed by Dr. Timothy F. O'Neill, MD for Medicare patients.

cardiac procedures	330
doctor visit	445
hospital care	498
inpatient care	498
minimally invasive procedures	11
nuclear scan	12
stress testing	50
ultrasound (sonogram)	280

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Timothy F. O'Neill, MD.

**Gender**
Male	452
Female	558

**Ethnicity**
Non-Hispanic White	691
Black	53
Hispanic	112
Asian	116
Other	0
Native American	0

**Age**
From 65 to 74	303
From 75 to 84	396
85 and over	251
Less than 65	60

Conditions of Medicare patients treated by Dr. Timothy F. O'Neill, MD in 2022

Hypertension	75
High Cholesterol	75
Stroke	22
Ischemic Heart Disease	42
Depression	28
Chronic Kidney Disease	39
Asthma	13
Osteoperosis	22
Atrial Fibrilation	38
Heart Failure	37
Chronic Obstructive Pulmonary Disease	28
Diabetes	41
Dementia	21
Cancer	21

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

The top procedures that Dr. Timothy F. O'Neill, MD treated as a cardiologist in Los Alamitos, CA during 2023 were hospital care, inpatient care, cardiac procedures and ultrasound (sonogram).

Volume of procedures performed by Dr. Timothy F. O'Neill, MD for Medicare patients.

ambulatory monitoring	13
cardiac procedures	307
doctor visit	455
hospital care	410
inpatient care	410
stress testing	19
ultrasound (sonogram)	275

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. Timothy F. O'Neill, MD.

**Gender**
Male	435
Female	568

**Ethnicity**
Non-Hispanic White	689
Black	44
Hispanic	105
Asian	121
Other	0
Native American	0

**Age**
From 65 to 74	287
From 75 to 84	388
85 and over	267
Less than 65	61

Conditions of Medicare patients treated by Dr. Timothy F. O'Neill, MD in 2023

Hypertension	75
High Cholesterol	75
Stroke	24
Ischemic Heart Disease	41
Depression	29
Chronic Kidney Disease	41
Asthma	13
Osteoperosis	21
Atrial Fibrilation	38
Heart Failure	39
Chronic Obstructive Pulmonary Disease	25
Diabetes	41
Dementia	21
Cancer	22

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2023

Volume of procedures performed by Dr. Timothy F. O'Neill, MD for Medicare patients.

The highest averages for the top procedures that Dr. Timothy F. O'Neill, MD treated as a cardiologist in Los Alamitos, CA were hospital care, inpatient care, cardiac procedures and ultrasound (sonogram).

ambulatory monitoring	17
cardiac procedures	337
doctor visit	679
hospital care	518
inpatient care	518
lab tests	249
minimally invasive procedures	12
nuclear scan	20
stress testing	66
ultrasound (sonogram)	262

Average Medicare Patient Data From 2012 - 2023

Information about Medicare patients treated by Dr. Timothy F. O'Neill, MD.

**Gender**
Male	498
Female	636

**Ethnicity**
Black / African American	43
Asian / Pacific Islander	107
Non-Hispanic White	829
Hispanic	121
Native American / Alaskan Native	0
Other	0

**Age**
75 to 84	402
85 and over	333
Less than 65	73
65 to 74	325

Average of Total of Conditions of Medicare patients treated by Dr. Timothy F. O'Neill, MD From 2012 - 2023

The highest averages of the most common conditions of Medicare patients that Dr. Timothy F. O'Neill, MD treated were hypertension, high cholesterol, ischemic heart disease and chronic kidney disease.

Hypertension	68
High Cholesterol	66
Stroke	15
Ischemic Heart Disease	50
Depression	27
Chronic Kidney Disease	42
Asthma	12
Osteoporosis	14
Heart Failure	37
Chronic Obstructive Pulmonary Disease	24
Diabetes	39
Atrial Fibrillation	29
Cancer	16
Dementia	23

Education & Training

He has a state license in California.

Licensed In: California

Ratings & Reviews

Dr. Timothy F. O'Neill, MD has an average of 1.0 out of 5 stars based on 1 ratings. We collect ratings and reviews of Dr. Timothy F. O'Neill, MD from all over the web to help you find the right in Los Alamitos, CA.

Overall Rating

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General Payments

These charts describe general payments received by Dr. Timothy F. O'Neill, MD. Doctors may receive payments for a number of reasons, including meal compensation, travel compensation, and consulting.

**Payments by Company**
Boehringer Ingelheim Pharmaceuticals, Inc.	$1,278 JARDIANCE $1,141	Pradaxa $121	$16
Novartis Pharmaceuticals Corporation	$1,061 ENTRESTO $678	LEQVIO $382
Janssen Pharmaceuticals, Inc	$762 XARELTO $708	INVOKANA $53
ZOLL Services LLC (A/K/A ZOLL LifeCor Corp)	$606 LifeVest $606
Amgen Inc.	$585 Repatha $529	Corlanor $20	$36
Other	$3,220 VERQUVO $552	VYNDAQEL $339	PRALUENT $264	BRILINTA $169	ELIQUIS $140	Other $1,755