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Home > MO Providers > Optometrists

Dr. Cathryn Lorraine Ahearn, OD

Accepting New Patients

(527 Ratings)

Specializes in: Optometry (Primary Eye Care)

University of Missouri-St. Louis (UMSL) College of Optometry (2001)

Professional interests include: eye exam, cataracts, dry eyes, and more.

175 SHINN LANE
HANNIBAL, MO 63401

(573) 248-0008

Dr. Cathryn Lorraine Ahearn, OD is an optometrist in HANNIBAL, MO specializing in optometry (primary eye care). She graduated from University of Missouri-St. Louis (UMSL) College of Optometry in 2001 and has 25 years of experience. Dr. Cathryn Lorraine Ahearn, OD is affiliated with Quincy Medical Group.

Office Locations

175 SHINN LANE
HANNIBAL, MO 63401

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Noteworthy Medicare Patient Procedures Performed by Dr. Cathryn Lorraine Ahearn, OD in 2023

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

Top 10%

By Volume:

eye procedures

SCODI of the posterior segment

In 2023, Dr. Cathryn Lorraine Ahearn, OD performed more eye procedures, and SCODI of the posterior segment (SCODI-P) procedures for Medicare patients than 90% of providers in related specialties within Missouri.

Top 25%

By Affordability:

eye exam

In 2012, Dr. Cathryn Lorraine Ahearn, OD had a list price for eye exam that was lower than the list prices billed to Medicare by 75% of providers in related specialties within Missouri. 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. Cathryn Lorraine Ahearn, OD treated as an optometrist in HANNIBAL, MO during 2012 were eye procedures.

Volume of procedures performed by Dr. Cathryn Lorraine Ahearn, OD for Medicare patients.

doctor visit	72
eye procedures	210

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Cathryn Lorraine Ahearn, OD treated as an optometrist in HANNIBAL, MO during 2013 were eye procedures.

Volume of procedures performed by Dr. Cathryn Lorraine Ahearn, OD for Medicare patients.

doctor visit	142
eye procedures	186

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Cathryn Lorraine Ahearn, OD.

**Gender**
Male	130
Female	200

**Ethnicity**
Non-Hispanic White	308
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	145
From 75 to 84	71
85 and over	23
Less than 65	91

Conditions of Medicare patients treated by Dr. Cathryn Lorraine Ahearn, OD in 2013

Hypertension	62
High Cholesterol	52
Stroke	0
Ischemic Heart Disease	29
Depression	27
Chronic Kidney Disease	17
Asthma	5
Osteoperosis	5
Atrial Fibrilation	6
Heart Failure	14
Chronic Obstructive Pulmonary Disease	16
Diabetes	42
Dementia	8
Cancer	9

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Cathryn Lorraine Ahearn, OD treated as an optometrist in HANNIBAL, MO during 2014 were eye procedures.

Volume of procedures performed by Dr. Cathryn Lorraine Ahearn, OD for Medicare patients.

doctor visit	29
eye procedures	403

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Cathryn Lorraine Ahearn, OD.

**Gender**
Male	165
Female	246

**Ethnicity**
Non-Hispanic White	396
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	162
From 75 to 84	100
85 and over	39
Less than 65	110

Conditions of Medicare patients treated by Dr. Cathryn Lorraine Ahearn, OD in 2014

Hypertension	60
High Cholesterol	51
Stroke	3
Ischemic Heart Disease	30
Depression	24
Chronic Kidney Disease	17
Asthma	8
Osteoperosis	5
Atrial Fibrilation	9
Heart Failure	14
Chronic Obstructive Pulmonary Disease	18
Diabetes	37
Dementia	5
Cancer	9

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Cathryn Lorraine Ahearn, OD treated as an optometrist in HANNIBAL, MO during 2015 were eye procedures.

Volume of procedures performed by Dr. Cathryn Lorraine Ahearn, OD for Medicare patients.

doctor visit	61
eye procedures	500

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Cathryn Lorraine Ahearn, OD.

**Gender**
Male	392
Female	628

**Ethnicity**
Non-Hispanic White	984
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	458
From 75 to 84	260
85 and over	102
Less than 65	200

Conditions of Medicare patients treated by Dr. Cathryn Lorraine Ahearn, OD in 2015

Hypertension	62
High Cholesterol	50
Stroke	0
Ischemic Heart Disease	30
Depression	20
Chronic Kidney Disease	19
Asthma	11
Osteoperosis	7
Atrial Fibrilation	9
Heart Failure	14
Chronic Obstructive Pulmonary Disease	17
Diabetes	36
Dementia	5
Cancer	10

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Cathryn Lorraine Ahearn, OD treated as an optometrist in HANNIBAL, MO during 2016 were eye procedures.

Volume of procedures performed by Dr. Cathryn Lorraine Ahearn, OD for Medicare patients.

doctor visit	64
eye procedures	577

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Cathryn Lorraine Ahearn, OD.

**Gender**
Male	240
Female	357

**Ethnicity**
Non-Hispanic White	579
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	247
From 75 to 84	192
85 and over	56
Less than 65	102

Conditions of Medicare patients treated by Dr. Cathryn Lorraine Ahearn, OD in 2016

Hypertension	61
High Cholesterol	50
Stroke	5
Ischemic Heart Disease	28
Depression	19
Chronic Kidney Disease	24
Asthma	21
Osteoperosis	6
Atrial Fibrilation	9
Heart Failure	16
Chronic Obstructive Pulmonary Disease	18
Diabetes	36
Dementia	6
Cancer	9

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Cathryn Lorraine Ahearn, OD treated as an optometrist in HANNIBAL, MO during 2017 were eye procedures.

Volume of procedures performed by Dr. Cathryn Lorraine Ahearn, OD for Medicare patients.

doctor visit	101
eye procedures	686

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Cathryn Lorraine Ahearn, OD.

**Gender**
Male	280
Female	400

**Ethnicity**
Non-Hispanic White	657
Black	12
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	316
From 75 to 84	205
85 and over	56
Less than 65	103

Conditions of Medicare patients treated by Dr. Cathryn Lorraine Ahearn, OD in 2017

Hypertension	66
High Cholesterol	46
Stroke	3
Ischemic Heart Disease	30
Depression	21
Chronic Kidney Disease	23
Asthma	6
Osteoperosis	8
Atrial Fibrilation	9
Heart Failure	18
Chronic Obstructive Pulmonary Disease	21
Diabetes	34
Dementia	6
Cancer	10

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Cathryn Lorraine Ahearn, OD treated as an optometrist in HANNIBAL, MO during 2018 were eye procedures.

Volume of procedures performed by Dr. Cathryn Lorraine Ahearn, OD for Medicare patients.

doctor visit	63
eye procedures	731

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Cathryn Lorraine Ahearn, OD.

**Gender**
Male	236
Female	381

**Ethnicity**
Non-Hispanic White	598
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	311
From 75 to 84	187
85 and over	50
Less than 65	69

Conditions of Medicare patients treated by Dr. Cathryn Lorraine Ahearn, OD in 2018

Hypertension	66
High Cholesterol	54
Stroke	2
Ischemic Heart Disease	28
Depression	22
Chronic Kidney Disease	26
Asthma	7
Osteoperosis	8
Atrial Fibrilation	10
Heart Failure	17
Chronic Obstructive Pulmonary Disease	20
Diabetes	32
Dementia	7
Cancer	11

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Cathryn Lorraine Ahearn, OD treated as an optometrist in HANNIBAL, MO during 2019 were eye procedures.

Volume of procedures performed by Dr. Cathryn Lorraine Ahearn, OD for Medicare patients.

doctor visit	58
eye procedures	750

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Cathryn Lorraine Ahearn, OD.

**Gender**
Male	242
Female	352

**Ethnicity**
Non-Hispanic White	573
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	0
From 75 to 84	185
85 and over	0
Less than 65	75

Conditions of Medicare patients treated by Dr. Cathryn Lorraine Ahearn, OD in 2019

Hypertension	67
High Cholesterol	56
Stroke	3
Ischemic Heart Disease	29
Depression	19
Chronic Kidney Disease	26
Asthma	5
Osteoperosis	9
Atrial Fibrilation	8
Heart Failure	17
Chronic Obstructive Pulmonary Disease	19
Diabetes	36
Dementia	7
Cancer	11

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Cathryn Lorraine Ahearn, OD treated as an optometrist in HANNIBAL, MO during 2020 were eye procedures.

Volume of procedures performed by Dr. Cathryn Lorraine Ahearn, OD for Medicare patients.

doctor visit	70
eye procedures	782

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Cathryn Lorraine Ahearn, OD.

**Gender**
Male	225
Female	348

**Ethnicity**
Non-Hispanic White	557
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	257
From 75 to 84	202
85 and over	51
Less than 65	63

Conditions of Medicare patients treated by Dr. Cathryn Lorraine Ahearn, OD in 2020

Hypertension	65
High Cholesterol	55
Stroke	3
Ischemic Heart Disease	31
Depression	20
Chronic Kidney Disease	27
Asthma	7
Osteoperosis	9
Atrial Fibrilation	9
Heart Failure	18
Chronic Obstructive Pulmonary Disease	16
Diabetes	35
Dementia	6
Cancer	11

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Cathryn Lorraine Ahearn, OD treated as an optometrist in HANNIBAL, MO during 2021 were eye procedures.

Volume of procedures performed by Dr. Cathryn Lorraine Ahearn, OD for Medicare patients.

doctor visit	85
eye procedures	815

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Cathryn Lorraine Ahearn, OD.

**Gender**
Male	219
Female	364

**Ethnicity**
Non-Hispanic White	561
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	247
From 75 to 84	208
85 and over	57
Less than 65	71

Conditions of Medicare patients treated by Dr. Cathryn Lorraine Ahearn, OD in 2021

Hypertension	67
High Cholesterol	53
Stroke	3
Ischemic Heart Disease	28
Depression	19
Chronic Kidney Disease	23
Asthma	4
Osteoperosis	10
Atrial Fibrilation	8
Heart Failure	19
Chronic Obstructive Pulmonary Disease	15
Diabetes	32
Dementia	6
Cancer	11

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Cathryn Lorraine Ahearn, OD treated as an optometrist in HANNIBAL, MO during 2022 were eye procedures.

Volume of procedures performed by Dr. Cathryn Lorraine Ahearn, OD for Medicare patients.

doctor visit	58
eye procedures	970

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Cathryn Lorraine Ahearn, OD.

**Gender**
Male	230
Female	405

**Ethnicity**
Non-Hispanic White	614
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	290
From 75 to 84	237
85 and over	66
Less than 65	42

Conditions of Medicare patients treated by Dr. Cathryn Lorraine Ahearn, OD in 2022

Hypertension	74
High Cholesterol	67
Stroke	6
Ischemic Heart Disease	21
Depression	17
Chronic Kidney Disease	17
Asthma	7
Osteoperosis	14
Atrial Fibrilation	13
Heart Failure	14
Chronic Obstructive Pulmonary Disease	16
Diabetes	30
Dementia	5
Cancer	14

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Cathryn Lorraine Ahearn, OD for Medicare patients.

The highest averages for the top procedures that Dr. Cathryn Lorraine Ahearn, OD treated as an optometrist in HANNIBAL, MO were eye procedures.

doctor visit	73
eye procedures	600

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Cathryn Lorraine Ahearn, OD.

**Gender**
Male	214
Female	334

**Ethnicity**
Black / African American	1
Asian / Pacific Islander	0
Non-Hispanic White	529
Native American / Alaskan Native	0
Hispanic	0
Other	0

**Age**
75 to 84	167
85 and over	45
Less than 65	84
65 to 74	221

Average of Total of Conditions of Medicare patients treated by Dr. Cathryn Lorraine Ahearn, OD From 2012 - 2022

The highest averages of the most common conditions of Medicare patients that Dr. Cathryn Lorraine Ahearn, OD treated were hypertension, high cholesterol, diabetes and ischemic heart disease.

Hypertension	59
High Cholesterol	48
Stroke	2
Ischemic Heart Disease	25
Depression	18
Chronic Kidney Disease	19
Asthma	7
Osteoporosis	7
Heart Failure	14
Chronic Obstructive Pulmonary Disease	16
Diabetes	31
Atrial Fibrillation	8
Dementia	5
Cancer	9

Education & Training

Dr. Cathryn Lorraine Ahearn, OD graduated from University of Missouri-St. Louis (UMSL) College of Optometry in 2001. She is certified by the Board Certification: Optometry and has a state license in Missouri.

Medical School: University of Missouri-St. Louis (UMSL) College of Optometry (2001)

Board Certification: Board Certification: Optometry

Licensed In: Missouri

Affiliations & Hospitals

Dr. Cathryn Lorraine Ahearn, OD is associated with these hospitals and organizations:

Quincy Medical Group

Ratings & Reviews

Dr. Cathryn Lorraine Ahearn, OD has an exceptional overall rating with an average of 4.92 out of 5 stars based on 527 ratings. We collect ratings and reviews of Dr. Cathryn Lorraine Ahearn, OD from all over the web to help you find the right in HANNIBAL, MO.

4.92

Overall Rating

(527 Ratings)

Leave a Review

Reviews From Around The Web

Overall Rating: 5.0 2025-07-25

Patient verified via Press Ganey

She listened to my problem did appropriate evaluation of my symptoms. Discussed several plans of care and we came to mutual plan. I was very happy. I have seen Dr Aherns before and was always treated with respect and kindness

Overall Rating: 5.0 2026-03-21

Patient verified via Press Ganey

Dr. Ahern took her time with me to do a thorough exam and talk to me about my eye presdure results.

Overall Rating: 5.0 2025-06-26

Patient verified via Press Ganey

Dr. Ahearn was very friendly and did her job well and answered any questions I had

Overall Rating: 5.0 2025-07-29

Patient verified via Press Ganey

Dr. Ahern is fast, efficient and friendly. She care about my concerns.

Overall Rating: 5.0 2025-04-04

Patient verified via Press Ganey

This was my first visit with Dr. Ahern and I was very pleased.

Overall Rating: 5.0 2025-05-22

Patient verified via Press Ganey

Talked to us and explained everything so we could understand.

Overall Rating: 5.0 2025-11-27

Patient verified via Press Ganey

I love my doctor and I will recommend her to everyone I know

Overall Rating: 5.0 2026-03-31

Patient verified via Press Ganey

Dr. Ahearn is the best.

Overall Rating: 5.0 2025-09-05

Patient verified via Press Ganey

Dr Ahearn is fantastic!

Overall Rating: 5.0 2026-02-14

Patient verified via Press Ganey

Very professional

General Payments

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

**Payments by Company**
Allergan Inc.	$65 OZURDEX $65
Novartis Pharmaceuticals Corporation	$59 BEOVU $59
Bausch & Lomb, a division of Bausch Health US, LLC	$55 VYZULTA $55
Alcon Laboratories Inc	$47 DAILIES $47
Allergan, Inc.	$33 DURYSTA $33
Other	$114 VUITY $32	XELPROS $25	Contact Lens $20	Ophthalmic surgical adjuncts $12	XIIDRA $11	Other $14

**Types of Payments**
Food and Beverage	$373

Biography

Dr. Cathryn Ahearn works as an optometry (primary eye care). Her areas of expertise include the following: eye injury, macular degeneration, and punctal plug insertion. The average patient rating for Dr. Ahearn is 5.0 stars (out of 5). She is professionally affiliated with Quincy Medical Group. Doctor.com reports that she is accepting new patients at her office in Hannibal, MO.

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Dr. Cathryn Lorraine Ahearn, OD

Office Locations

Noteworthy Medicare Patient Procedures Performed by Dr. Cathryn Lorraine Ahearn, OD in 2023

By Volume:

By Affordability:

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. Cathryn Lorraine Ahearn, OD in 2013

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

2014 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Cathryn Lorraine Ahearn, OD in 2014

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

2015 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Cathryn Lorraine Ahearn, OD in 2015

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

2016 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Cathryn Lorraine Ahearn, OD in 2016

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

2017 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Cathryn Lorraine Ahearn, OD in 2017

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

2018 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Cathryn Lorraine Ahearn, OD in 2018

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

2019 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Cathryn Lorraine Ahearn, OD in 2019

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

2020 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Cathryn Lorraine Ahearn, OD in 2020

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

2021 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Cathryn Lorraine Ahearn, OD in 2021

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

2022 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Cathryn Lorraine Ahearn, 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. Cathryn Lorraine Ahearn, OD From 2012 - 2022

Education & Training

Affiliations & Hospitals

Ratings & Reviews

General Payments

Biography

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