In 2023, among providers in related specialties within California, Dr. David Ashley Swearingen, OD performed more comprehensive eye exam, eye procedures, and gonioscopy procedures for Medicare patients than 95% of them and he also had a list price for eye tests 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:

fundus photography

In 2023, Dr. David Ashley Swearingen, OD performed more fundus photography procedures for Medicare patients than 90% of providers in related specialties within California.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. David Ashley Swearingen, OD treated as an optometrist in San Dimas, CA during 2012 were eye procedures, nursing home care and ultrasound (sonogram).

Volume of procedures performed by Dr. David Ashley Swearingen, OD for Medicare patients.

eye procedures	2679
nursing home care	126
ultrasound (sonogram)	51

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. David Ashley Swearingen, OD treated as an optometrist in San Dimas, CA during 2013 were eye procedures.

Volume of procedures performed by Dr. David Ashley Swearingen, OD for Medicare patients.

eye procedures	2356

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. David Ashley Swearingen, OD.

**Gender**
Male	813
Female	1424

**Ethnicity**
Non-Hispanic White	1338
Black	195
Hispanic	501
Asian	166
Other	0
Native American	0

**Age**
From 65 to 74	486
From 75 to 84	629
85 and over	834
Less than 65	288

Conditions of Medicare patients treated by Dr. David Ashley Swearingen, OD in 2013

Hypertension	75
High Cholesterol	42
Stroke	18
Ischemic Heart Disease	50
Depression	51
Chronic Kidney Disease	42
Asthma	8
Osteoperosis	14
Atrial Fibrilation	16
Heart Failure	43
Chronic Obstructive Pulmonary Disease	32
Diabetes	52
Dementia	66
Cancer	7

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. David Ashley Swearingen, OD treated as an optometrist in San Dimas, CA during 2014 were eye procedures, nursing home care and ultrasound (sonogram).

Volume of procedures performed by Dr. David Ashley Swearingen, OD for Medicare patients.

eye procedures	1724
nursing home care	28
ultrasound (sonogram)	17

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. David Ashley Swearingen, OD.

**Gender**
Male	534
Female	966

**Ethnicity**
Non-Hispanic White	845
Black	165
Hispanic	345
Asian	123
Other	0
Native American	0

**Age**
From 65 to 74	329
From 75 to 84	434
85 and over	580
Less than 65	157

Conditions of Medicare patients treated by Dr. David Ashley Swearingen, OD in 2014

Hypertension	75
High Cholesterol	46
Stroke	16
Ischemic Heart Disease	50
Depression	49
Chronic Kidney Disease	42
Asthma	8
Osteoperosis	15
Atrial Fibrilation	16
Heart Failure	42
Chronic Obstructive Pulmonary Disease	29
Diabetes	54
Dementia	70
Cancer	7

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. David Ashley Swearingen, OD treated as an optometrist in San Dimas, CA during 2015 were eye procedures and ultrasound (sonogram).

Volume of procedures performed by Dr. David Ashley Swearingen, OD for Medicare patients.

eye procedures	1574
ultrasound (sonogram)	21

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. David Ashley Swearingen, OD.

**Gender**
Male	912
Female	1644

**Ethnicity**
Non-Hispanic White	1524
Black	310
Hispanic	524
Asian	150
Other	0
Native American	0

**Age**
From 65 to 74	558
From 75 to 84	720
85 and over	998
Less than 65	280

Conditions of Medicare patients treated by Dr. David Ashley Swearingen, OD in 2015

Hypertension	75
High Cholesterol	49
Stroke	18
Ischemic Heart Disease	51
Depression	51
Chronic Kidney Disease	47
Asthma	22
Osteoperosis	16
Atrial Fibrilation	16
Heart Failure	42
Chronic Obstructive Pulmonary Disease	30
Diabetes	53
Dementia	70
Cancer	8

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. David Ashley Swearingen, OD treated as an optometrist in San Dimas, CA during 2016 were eye procedures, ultrasound (sonogram) and nursing home care.

Volume of procedures performed by Dr. David Ashley Swearingen, OD for Medicare patients.

eye procedures	2674
nursing home care	11
ultrasound (sonogram)	41

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. David Ashley Swearingen, OD.

**Gender**
Male	781
Female	1269

**Ethnicity**
Non-Hispanic White	1366
Black	193
Hispanic	370
Asian	79
Other	25
Native American	17

**Age**
From 65 to 74	481
From 75 to 84	624
85 and over	713
Less than 65	232

Conditions of Medicare patients treated by Dr. David Ashley Swearingen, OD in 2016

Hypertension	75
High Cholesterol	51
Stroke	16
Ischemic Heart Disease	44
Depression	50
Chronic Kidney Disease	47
Asthma	31
Osteoperosis	14
Atrial Fibrilation	16
Heart Failure	40
Chronic Obstructive Pulmonary Disease	29
Diabetes	50
Dementia	69
Cancer	8

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. David Ashley Swearingen, OD treated as an optometrist in San Dimas, CA during 2017 were eye procedures and nursing home care.

Volume of procedures performed by Dr. David Ashley Swearingen, OD for Medicare patients.

eye procedures	1857
nursing home care	35

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. David Ashley Swearingen, OD.

**Gender**
Male	657
Female	1058

**Ethnicity**
Non-Hispanic White	1158
Black	146
Hispanic	305
Asian	78
Other	0
Native American	0

**Age**
From 65 to 74	432
From 75 to 84	488
85 and over	607
Less than 65	188

Conditions of Medicare patients treated by Dr. David Ashley Swearingen, OD in 2017

Hypertension	75
High Cholesterol	49
Stroke	16
Ischemic Heart Disease	49
Depression	51
Chronic Kidney Disease	51
Asthma	7
Osteoperosis	12
Atrial Fibrilation	16
Heart Failure	40
Chronic Obstructive Pulmonary Disease	32
Diabetes	50
Dementia	69
Cancer	7

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. David Ashley Swearingen, OD treated as an optometrist in San Dimas, CA during 2018 were eye procedures and nursing home care.

Volume of procedures performed by Dr. David Ashley Swearingen, OD for Medicare patients.

eye procedures	1937
nursing home care	17

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. David Ashley Swearingen, OD.

**Gender**
Male	633
Female	1130

**Ethnicity**
Non-Hispanic White	1057
Black	202
Hispanic	353
Asian	112
Other	23
Native American	16

**Age**
From 65 to 74	409
From 75 to 84	530
85 and over	627
Less than 65	197

Conditions of Medicare patients treated by Dr. David Ashley Swearingen, OD in 2018

Hypertension	75
High Cholesterol	49
Stroke	16
Ischemic Heart Disease	47
Depression	51
Chronic Kidney Disease	51
Asthma	6
Osteoperosis	10
Atrial Fibrilation	15
Heart Failure	42
Chronic Obstructive Pulmonary Disease	32
Diabetes	52
Dementia	67
Cancer	7

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. David Ashley Swearingen, OD treated as an optometrist in San Dimas, CA during 2019 were eye procedures and nursing home care.

Volume of procedures performed by Dr. David Ashley Swearingen, OD for Medicare patients.

eye procedures	2188
nursing home care	55

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. David Ashley Swearingen, OD.

**Gender**
Male	804
Female	1208

**Ethnicity**
Non-Hispanic White	1209
Black	185
Hispanic	404
Asian	159
Other	38
Native American	17

**Age**
From 65 to 74	520
From 75 to 84	550
85 and over	698
Less than 65	244

Conditions of Medicare patients treated by Dr. David Ashley Swearingen, OD in 2019

Hypertension	75
High Cholesterol	54
Stroke	15
Ischemic Heart Disease	48
Depression	49
Chronic Kidney Disease	55
Asthma	7
Osteoperosis	11
Atrial Fibrilation	15
Heart Failure	45
Chronic Obstructive Pulmonary Disease	31
Diabetes	56
Dementia	64
Cancer	8

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. David Ashley Swearingen, OD treated as an optometrist in San Dimas, CA during 2020 were eye procedures.

Volume of procedures performed by Dr. David Ashley Swearingen, OD for Medicare patients.

eye procedures	3320

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. David Ashley Swearingen, OD.

**Gender**
Male	1273
Female	1842

**Ethnicity**
Non-Hispanic White	1762
Black	431
Hispanic	575
Asian	261
Other	69
Native American	17

**Age**
From 65 to 74	930
From 75 to 84	882
85 and over	882
Less than 65	421

Conditions of Medicare patients treated by Dr. David Ashley Swearingen, OD in 2020

Hypertension	75
High Cholesterol	58
Stroke	17
Ischemic Heart Disease	47
Depression	58
Chronic Kidney Disease	56
Asthma	6
Osteoperosis	13
Atrial Fibrilation	13
Heart Failure	42
Chronic Obstructive Pulmonary Disease	34
Diabetes	53
Dementia	67
Cancer	6

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. David Ashley Swearingen, OD treated as an optometrist in San Dimas, CA during 2021 were eye procedures.

Volume of procedures performed by Dr. David Ashley Swearingen, OD for Medicare patients.

eye procedures	4416

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. David Ashley Swearingen, OD.

**Gender**
Male	1594
Female	2369

**Ethnicity**
Non-Hispanic White	2338
Black	514
Hispanic	723
Asian	314
Other	60
Native American	14

**Age**
From 65 to 74	1205
From 75 to 84	1139
85 and over	1052
Less than 65	567

Conditions of Medicare patients treated by Dr. David Ashley Swearingen, OD in 2021

Hypertension	75
High Cholesterol	59
Stroke	16
Ischemic Heart Disease	46
Depression	57
Chronic Kidney Disease	55
Asthma	7
Osteoperosis	13
Atrial Fibrilation	14
Heart Failure	41
Chronic Obstructive Pulmonary Disease	31
Diabetes	53
Dementia	64
Cancer	7

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. David Ashley Swearingen, OD treated as an optometrist in San Dimas, CA during 2022 were eye procedures.

Volume of procedures performed by Dr. David Ashley Swearingen, OD for Medicare patients.

eye procedures	3704

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. David Ashley Swearingen, OD.

**Gender**
Male	1423
Female	1918

**Ethnicity**
Non-Hispanic White	2044
Black	387
Hispanic	597
Asian	239
Other	50
Native American	24

**Age**
From 65 to 74	1021
From 75 to 84	976
85 and over	922
Less than 65	422

Conditions of Medicare patients treated by Dr. David Ashley Swearingen, OD in 2022

Hypertension	75
High Cholesterol	68
Stroke	22
Ischemic Heart Disease	35
Depression	55
Chronic Kidney Disease	38
Asthma	11
Osteoperosis	17
Atrial Fibrilation	28
Heart Failure	37
Chronic Obstructive Pulmonary Disease	35
Diabetes	52
Dementia	50
Cancer	10

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. David Ashley Swearingen, OD for Medicare patients.

The highest averages for the top procedures that Dr. David Ashley Swearingen, OD treated as an optometrist in San Dimas, CA were eye procedures, nursing home care and ultrasound (sonogram).

eye procedures	2584
nursing home care	45
ultrasound (sonogram)	32

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. David Ashley Swearingen, OD.

**Gender**
Male	856
Female	1348

**Ethnicity**
Black / African American	248
Asian / Pacific Islander	152
Non-Hispanic White	1331
Native American / Alaskan Native	9
Hispanic	427
Other	24

**Age**
75 to 84	633
85 and over	719
Less than 65	272
65 to 74	579

Average of Total of Conditions of Medicare patients treated by Dr. David Ashley Swearingen, OD From 2012 - 2022

The highest averages of the most common conditions of Medicare patients that Dr. David Ashley Swearingen, OD treated were hypertension, dementia, depression and diabetes.

Hypertension	68
High Cholesterol	47
Stroke	15
Ischemic Heart Disease	42
Depression	47
Chronic Kidney Disease	44
Asthma	10
Osteoporosis	12
Heart Failure	37
Chronic Obstructive Pulmonary Disease	28
Diabetes	47
Atrial Fibrillation	15
Dementia	59
Cancer	6

Education & Training

He has a state license in California.

Licensed In: California

Ratings & Reviews

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General Payments

These charts describe general payments received by Dr. David Ashley Swearingen, OD. Doctors may receive payments for a number of reasons, including meal compensation, travel compensation, and consulting.

**Payments by Company**
OPTOVUE, INC.	$328 iVue $158	xr $155	OCT $15
Coopervision Inc.	$207 MyDay Contact Lens $100	Clariti Contact Lens $78	Multiple Brands Contact Lens $28
Alcon Laboratories Inc	$149 Contact Lenses $134	AIR OPTIX $14
Valeant Pharmaceuticals North America LLC	$116 BIOTRUE ONE DAY $87	ULTRA $29
TissueTech, Inc.	$43 AmnioGuard $43
Other	$46 XIIDRA $23	$23

**Types of Payments**
Food and Beverage	$716
Gift	$173

Biography

Dr. David Swearingen specializes in optometry (primary eye care) and practices in San Dimas, CA. Dr. Swearingen obtained a license to practice in California.

Select Year:

Dr. David Ashley Swearingen, OD

Office Locations

Noteworthy Medicare Patient Procedures Performed by Dr. David Ashley Swearingen, OD in 2023

By Volume:

By Affordability:

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. David Ashley Swearingen, OD in 2013

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

2014 Medicare Patient Data

Conditions of Medicare patients treated by Dr. David Ashley Swearingen, OD in 2014

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

2015 Medicare Patient Data

Conditions of Medicare patients treated by Dr. David Ashley Swearingen, OD in 2015

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

2016 Medicare Patient Data

Conditions of Medicare patients treated by Dr. David Ashley Swearingen, OD in 2016

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

2017 Medicare Patient Data

Conditions of Medicare patients treated by Dr. David Ashley Swearingen, OD in 2017

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

2018 Medicare Patient Data

Conditions of Medicare patients treated by Dr. David Ashley Swearingen, OD in 2018

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

2019 Medicare Patient Data

Conditions of Medicare patients treated by Dr. David Ashley Swearingen, OD in 2019

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

2020 Medicare Patient Data

Conditions of Medicare patients treated by Dr. David Ashley Swearingen, OD in 2020

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

2021 Medicare Patient Data

Conditions of Medicare patients treated by Dr. David Ashley Swearingen, OD in 2021

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

2022 Medicare Patient Data

Conditions of Medicare patients treated by Dr. David Ashley Swearingen, OD 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. David Ashley Swearingen, OD From 2012 - 2022

Education & Training

Ratings & Reviews

General Payments

Biography

Optometrists in Nearby Locations

Other Providers in San Dimas, CA