In 2023, Dr. Thomas James Parrish, OD had a list price for anterior segment surgery, cataract surgery, cataract surgery with IOL implantation, extracapsular cataract extraction (ECCE) with IOL implantation, extracapsular lens removal, intraocular lens (IOL) implant, lens removal surgery, lens replacement surgery, and simple cataract surgery that was lower than the list prices billed to Medicare by 95% of providers in related specialties within Iowa. 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:

comprehensive eye exam

eye procedures

By Affordability:

scanning computerized ophthalmic diagnostic imaging

SCODI of the posterior segment

In 2012, among providers in related specialties within Iowa, Dr. Thomas James Parrish, OD performed more comprehensive eye exam, and eye procedures procedures for Medicare patients than 75% of them and he also had a list price for scanning computerized ophthalmic diagnostic imaging (SCODI), and SCODI of the posterior segment (SCODI-P) 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

2015 Medicare Procedure Volume

The top procedures that Dr. Thomas James Parrish, OD treated as an optometrist in Carroll, IA during 2015 were eye procedures.

Volume of procedures performed by Dr. Thomas James Parrish, OD for Medicare patients.

doctor visit	25
eye procedures	23

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Thomas James Parrish, OD.

**Gender**
Male	54
Female	72

**Ethnicity**
Non-Hispanic White	126
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	38
From 75 to 84	50
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Thomas James Parrish, OD in 2015

Hypertension	68
High Cholesterol	38
Stroke	0
Ischemic Heart Disease	21
Depression	22
Chronic Kidney Disease	27
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	29
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Thomas James Parrish, OD treated as an optometrist in Carroll, IA during 2016 were eye procedures.

Volume of procedures performed by Dr. Thomas James Parrish, OD for Medicare patients.

doctor visit	61
eye procedures	84

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Thomas James Parrish, OD.

**Gender**
Male	59
Female	74

**Age**
From 65 to 74	62
From 75 to 84	35
85 and over	20
Less than 65	16

Conditions of Medicare patients treated by Dr. Thomas James Parrish, OD in 2016

Hypertension	67
High Cholesterol	57
Stroke	0
Ischemic Heart Disease	22
Depression	20
Chronic Kidney Disease	20
Asthma	11
Osteoperosis	0
Atrial Fibrilation	8
Heart Failure	14
Chronic Obstructive Pulmonary Disease	11
Diabetes	25
Dementia	9
Cancer	11

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Thomas James Parrish, OD treated as an optometrist in Carroll, IA during 2017 were eye procedures.

Volume of procedures performed by Dr. Thomas James Parrish, OD for Medicare patients.

doctor visit	90
eye procedures	164

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Thomas James Parrish, OD.

**Gender**
Male	81
Female	102

**Age**
From 65 to 74	91
From 75 to 84	55
85 and over	23
Less than 65	14

Conditions of Medicare patients treated by Dr. Thomas James Parrish, OD in 2017

Hypertension	63
High Cholesterol	48
Stroke	0
Ischemic Heart Disease	28
Depression	21
Chronic Kidney Disease	25
Asthma	0
Osteoperosis	7
Atrial Fibrilation	13
Heart Failure	13
Chronic Obstructive Pulmonary Disease	11
Diabetes	26
Dementia	7
Cancer	10

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Thomas James Parrish, OD treated as an optometrist in Carroll, IA during 2018 were eye procedures.

Volume of procedures performed by Dr. Thomas James Parrish, OD for Medicare patients.

doctor visit	122
eye procedures	223

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Thomas James Parrish, OD.

**Gender**
Male	108
Female	120

**Age**
From 65 to 74	120
From 75 to 84	60
85 and over	30
Less than 65	18

Conditions of Medicare patients treated by Dr. Thomas James Parrish, OD in 2018

Hypertension	54
High Cholesterol	51
Stroke	0
Ischemic Heart Disease	20
Depression	14
Chronic Kidney Disease	23
Asthma	5
Osteoperosis	7
Atrial Fibrilation	10
Heart Failure	8
Chronic Obstructive Pulmonary Disease	11
Diabetes	23
Dementia	0
Cancer	11

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Thomas James Parrish, OD treated as an optometrist in Carroll, IA during 2019 were eye procedures.

Volume of procedures performed by Dr. Thomas James Parrish, OD for Medicare patients.

doctor visit	115
eye procedures	204

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Thomas James Parrish, OD.

**Gender**
Male	96
Female	122

**Age**
From 65 to 74	113
From 75 to 84	63
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Thomas James Parrish, OD in 2019

Hypertension	61
High Cholesterol	52
Stroke	0
Ischemic Heart Disease	19
Depression	19
Chronic Kidney Disease	28
Asthma	0
Osteoperosis	7
Atrial Fibrilation	13
Heart Failure	11
Chronic Obstructive Pulmonary Disease	12
Diabetes	23
Dementia	0
Cancer	12

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Thomas James Parrish, OD treated as an optometrist in Carroll, IA during 2020 were eye procedures.

Volume of procedures performed by Dr. Thomas James Parrish, OD for Medicare patients.

doctor visit	132
eye procedures	208

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Thomas James Parrish, OD.

**Gender**
Male	86
Female	121

**Age**
From 65 to 74	97
From 75 to 84	67
85 and over	27
Less than 65	16

Conditions of Medicare patients treated by Dr. Thomas James Parrish, OD in 2020

Hypertension	61
High Cholesterol	53
Stroke	0
Ischemic Heart Disease	20
Depression	18
Chronic Kidney Disease	28
Asthma	0
Osteoperosis	7
Atrial Fibrilation	12
Heart Failure	12
Chronic Obstructive Pulmonary Disease	8
Diabetes	26
Dementia	7
Cancer	10

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Thomas James Parrish, OD treated as an optometrist in Carroll, IA during 2021 were eye procedures.

Volume of procedures performed by Dr. Thomas James Parrish, OD for Medicare patients.

doctor visit	184
eye procedures	328

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Thomas James Parrish, OD.

**Gender**
Male	125
Female	184

**Ethnicity**
Non-Hispanic White	297
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	166
From 75 to 84	74
85 and over	50
Less than 65	19

Conditions of Medicare patients treated by Dr. Thomas James Parrish, OD in 2021

Hypertension	60
High Cholesterol	55
Stroke	5
Ischemic Heart Disease	19
Depression	17
Chronic Kidney Disease	28
Asthma	0
Osteoperosis	11
Atrial Fibrilation	10
Heart Failure	11
Chronic Obstructive Pulmonary Disease	10
Diabetes	24
Dementia	7
Cancer	10

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Thomas James Parrish, OD treated as an optometrist in Carroll, IA during 2022 were eye procedures.

Volume of procedures performed by Dr. Thomas James Parrish, OD for Medicare patients.

doctor visit	188
eye procedures	711

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Thomas James Parrish, OD.

**Gender**
Male	191
Female	323

**Ethnicity**
Non-Hispanic White	496
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	250
From 75 to 84	154
85 and over	85
Less than 65	25

Conditions of Medicare patients treated by Dr. Thomas James Parrish, OD in 2022

Hypertension	70
High Cholesterol	68
Stroke	7
Ischemic Heart Disease	11
Depression	18
Chronic Kidney Disease	22
Asthma	4
Osteoperosis	15
Atrial Fibrilation	13
Heart Failure	7
Chronic Obstructive Pulmonary Disease	8
Diabetes	23
Dementia	5
Cancer	12

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2015 - 2022

Volume of procedures performed by Dr. Thomas James Parrish, OD for Medicare patients.

The highest averages for the top procedures that Dr. Thomas James Parrish, OD treated as an optometrist in Carroll, IA were eye procedures.

doctor visit	114
eye procedures	243

Average Medicare Patient Data From 2015 - 2022

Information about Medicare patients treated by Dr. Thomas James Parrish, OD.

**Gender**
Male	100
Female	139

**Ethnicity**
Black / African American	0
Asian / Pacific Islander	0
Non-Hispanic White	114
Native American / Alaskan Native	0
Hispanic	0
Other	0

**Age**
75 to 84	69
85 and over	29
Less than 65	13
65 to 74	117

Average of Total of Conditions of Medicare patients treated by Dr. Thomas James Parrish, OD From 2015 - 2022

The highest averages of the most common conditions of Medicare patients that Dr. Thomas James Parrish, OD treated were hypertension, high cholesterol, chronic kidney disease and diabetes.

Hypertension	63
High Cholesterol	52
Stroke	1
Ischemic Heart Disease	20
Depression	18
Chronic Kidney Disease	25
Asthma	2
Osteoporosis	6
Heart Failure	9
Chronic Obstructive Pulmonary Disease	8
Diabetes	24
Atrial Fibrillation	9
Cancer	9
Dementia	4

Education & Training

He has a state license in Iowa.

Licensed In: Iowa

Ratings & Reviews

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General Payments

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

**Payments by Company**
Johnson & Johnson Vision Care, Inc.	$220 Acuvue $209	Soft contact lenses $10
Alcon Laboratories Inc	$94 DAILIES $43	Contact Lenses $36	AIR OPTIX $14
Alcon Vision LLC	$76 TOTAL30 $76
Coopervision Inc.	$67 MyDay Contact Lens $67
Bausch & Lomb, a division of Bausch Health US, LLC	$34 ULTRA MULTIFOCAL TORIC $34
Other	$18 XIIDRA $10	AdaptDx $7

**Types of Payments**
Food and Beverage	$509

Biography

Dr. Thomas Parrish practices optometry (primary eye care) in Carroll, IA. Dr. Parrish has obtained a license to practice in Iowa.

Select Year:

Dr. Thomas James Parrish, OD

Office Locations

Noteworthy Medicare Patient Procedures Performed by Dr. Thomas James Parrish, OD in 2023

By Affordability:

By Volume:

By Affordability:

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

2015 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Thomas James Parrish, OD in 2015

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

2016 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Thomas James Parrish, OD in 2016

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

2017 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Thomas James Parrish, OD in 2017

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

2018 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Thomas James Parrish, OD in 2018

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

2019 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Thomas James Parrish, OD in 2019

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

2020 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Thomas James Parrish, OD in 2020

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

2021 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Thomas James Parrish, OD in 2021

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

2022 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Thomas James Parrish, OD in 2022

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2015 - 2022

Average Medicare Patient Data From 2015 - 2022

Average of Total of Conditions of Medicare patients treated by Dr. Thomas James Parrish, OD From 2015 - 2022

Education & Training

Ratings & Reviews

General Payments

Biography

Optometrists in Nearby Locations

Other Providers in Carroll, IA