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Home > NH Providers > Optometrists

Ferdinand Karl Engelhart III, OD

(1 Rating)

Specializes in: Optometry (Primary Eye Care)

5 Coliseum Avenue
Nashua, NH 03063

(603) 882-9800

Ferdinand Karl Engelhart III, OD is an optometrist in Nashua, NH specializing in optometry (primary eye care).

Office Locations

5 Coliseum Avenue
Nashua, NH 03063

(603) 882-9800

(603) 882-0556

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Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Ferdinand Karl Engelhart III, OD treated as an optometrist in Nashua, NH during 2012 were eye procedures.

Volume of procedures performed by Ferdinand Karl Engelhart III, OD for Medicare patients.

doctor visit	76
eye procedures	312

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Ferdinand Karl Engelhart III, OD treated as an optometrist in Nashua, NH during 2013 were eye procedures.

Volume of procedures performed by Ferdinand Karl Engelhart III, OD for Medicare patients.

doctor visit	92
eye procedures	392

2013 Medicare Patient Data

Information about Medicare patients treated by Ferdinand Karl Engelhart III, OD.

**Gender**
Male	136
Female	214

**Ethnicity**
Non-Hispanic White	328
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	185
From 75 to 84	85
85 and over	21
Less than 65	59

Conditions of Medicare patients treated by Ferdinand Karl Engelhart III, OD in 2013

Hypertension	54
High Cholesterol	58
Stroke	0
Ischemic Heart Disease	20
Depression	24
Chronic Kidney Disease	16
Asthma	9
Osteoperosis	8
Atrial Fibrilation	11
Heart Failure	7
Chronic Obstructive Pulmonary Disease	7
Diabetes	24
Dementia	5
Cancer	9

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Ferdinand Karl Engelhart III, OD treated as an optometrist in Nashua, NH during 2014 were eye procedures.

Volume of procedures performed by Ferdinand Karl Engelhart III, OD for Medicare patients.

doctor visit	81
eye procedures	378

2014 Medicare Patient Data

Information about Medicare patients treated by Ferdinand Karl Engelhart III, OD.

**Gender**
Male	115
Female	207

**Ethnicity**
Non-Hispanic White	306
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	179
From 75 to 84	68
85 and over	22
Less than 65	53

Conditions of Medicare patients treated by Ferdinand Karl Engelhart III, OD in 2014

Hypertension	53
High Cholesterol	55
Stroke	0
Ischemic Heart Disease	19
Depression	18
Chronic Kidney Disease	15
Asthma	7
Osteoperosis	5
Atrial Fibrilation	6
Heart Failure	6
Chronic Obstructive Pulmonary Disease	10
Diabetes	24
Dementia	4
Cancer	9

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Ferdinand Karl Engelhart III, OD treated as an optometrist in Nashua, NH during 2015 were eye procedures.

Volume of procedures performed by Ferdinand Karl Engelhart III, OD for Medicare patients.

doctor visit	63
eye procedures	338

2015 Medicare Patient Data

Information about Medicare patients treated by Ferdinand Karl Engelhart III, OD.

**Gender**
Male	202
Female	406

**Ethnicity**
Non-Hispanic White	562
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	342
From 75 to 84	128
85 and over	40
Less than 65	98

Conditions of Medicare patients treated by Ferdinand Karl Engelhart III, OD in 2015

Hypertension	51
High Cholesterol	51
Stroke	0
Ischemic Heart Disease	17
Depression	26
Chronic Kidney Disease	15
Asthma	10
Osteoperosis	6
Atrial Fibrilation	7
Heart Failure	6
Chronic Obstructive Pulmonary Disease	7
Diabetes	25
Dementia	5
Cancer	8

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Ferdinand Karl Engelhart III, OD treated as an optometrist in Nashua, NH during 2016 were eye procedures.

Volume of procedures performed by Ferdinand Karl Engelhart III, OD for Medicare patients.

doctor visit	106
eye procedures	358

2016 Medicare Patient Data

Information about Medicare patients treated by Ferdinand Karl Engelhart III, OD.

**Gender**
Male	116
Female	207

**Ethnicity**
Non-Hispanic White	298
Black	0
Hispanic	0
Asian	0
Other	11
Native American	0

**Age**
From 65 to 74	188
From 75 to 84	73
85 and over	25
Less than 65	37

Conditions of Medicare patients treated by Ferdinand Karl Engelhart III, OD in 2016

Hypertension	54
High Cholesterol	53
Stroke	0
Ischemic Heart Disease	15
Depression	20
Chronic Kidney Disease	19
Asthma	10
Osteoperosis	5
Atrial Fibrilation	7
Heart Failure	5
Chronic Obstructive Pulmonary Disease	7
Diabetes	21
Dementia	4
Cancer	8

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Ferdinand Karl Engelhart III, OD treated as an optometrist in Nashua, NH during 2017 were eye procedures.

Volume of procedures performed by Ferdinand Karl Engelhart III, OD for Medicare patients.

doctor visit	126
eye procedures	389

2017 Medicare Patient Data

Information about Medicare patients treated by Ferdinand Karl Engelhart III, OD.

**Gender**
Male	146
Female	202

**Ethnicity**
Non-Hispanic White	322
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	204
From 75 to 84	79
85 and over	26
Less than 65	39

Conditions of Medicare patients treated by Ferdinand Karl Engelhart III, OD in 2017

Hypertension	53
High Cholesterol	49
Stroke	5
Ischemic Heart Disease	20
Depression	21
Chronic Kidney Disease	23
Asthma	6
Osteoperosis	9
Atrial Fibrilation	9
Heart Failure	7
Chronic Obstructive Pulmonary Disease	8
Diabetes	26
Dementia	5
Cancer	9

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Ferdinand Karl Engelhart III, OD treated as an optometrist in Nashua, NH during 2018 were eye procedures.

Volume of procedures performed by Ferdinand Karl Engelhart III, OD for Medicare patients.

doctor visit	103
eye procedures	429

2018 Medicare Patient Data

Information about Medicare patients treated by Ferdinand Karl Engelhart III, OD.

**Gender**
Male	118
Female	213

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

**Age**
From 65 to 74	194
From 75 to 84	84
85 and over	18
Less than 65	35

Conditions of Medicare patients treated by Ferdinand Karl Engelhart III, OD in 2018

Hypertension	53
High Cholesterol	55
Stroke	0
Ischemic Heart Disease	18
Depression	20
Chronic Kidney Disease	21
Asthma	8
Osteoperosis	7
Atrial Fibrilation	8
Heart Failure	8
Chronic Obstructive Pulmonary Disease	6
Diabetes	24
Dementia	5
Cancer	11

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Ferdinand Karl Engelhart III, OD treated as an optometrist in Nashua, NH during 2019 were eye procedures.

Volume of procedures performed by Ferdinand Karl Engelhart III, OD for Medicare patients.

doctor visit	102
eye procedures	412

2019 Medicare Patient Data

Information about Medicare patients treated by Ferdinand Karl Engelhart III, OD.

**Gender**
Male	109
Female	203

**Ethnicity**
Non-Hispanic White	290
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	183
From 75 to 84	73
85 and over	31
Less than 65	25

Conditions of Medicare patients treated by Ferdinand Karl Engelhart III, OD in 2019

Hypertension	55
High Cholesterol	55
Stroke	0
Ischemic Heart Disease	21
Depression	21
Chronic Kidney Disease	23
Asthma	8
Osteoperosis	11
Atrial Fibrilation	9
Heart Failure	10
Chronic Obstructive Pulmonary Disease	11
Diabetes	21
Dementia	6
Cancer	10

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Ferdinand Karl Engelhart III, OD treated as an optometrist in Nashua, NH during 2020 were eye procedures.

Volume of procedures performed by Ferdinand Karl Engelhart III, OD for Medicare patients.

doctor visit	49
eye procedures	270

2020 Medicare Patient Data

Information about Medicare patients treated by Ferdinand Karl Engelhart III, OD.

**Gender**
Male	71
Female	119

**Ethnicity**
Non-Hispanic White	173
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	115
From 75 to 84	43
85 and over	15
Less than 65	17

Conditions of Medicare patients treated by Ferdinand Karl Engelhart III, OD in 2020

Hypertension	49
High Cholesterol	53
Stroke	0
Ischemic Heart Disease	14
Depression	20
Chronic Kidney Disease	22
Asthma	0
Osteoperosis	7
Atrial Fibrilation	8
Heart Failure	8
Chronic Obstructive Pulmonary Disease	0
Diabetes	26
Dementia	6
Cancer	11

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Ferdinand Karl Engelhart III, OD treated as an optometrist in Nashua, NH during 2021 were eye procedures.

Volume of procedures performed by Ferdinand Karl Engelhart III, OD for Medicare patients.

doctor visit	93
eye procedures	315

2021 Medicare Patient Data

Information about Medicare patients treated by Ferdinand Karl Engelhart III, OD.

**Gender**
Male	100
Female	138

**Ethnicity**
Non-Hispanic White	216
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	141
From 75 to 84	66
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Ferdinand Karl Engelhart III, OD in 2021

Hypertension	51
High Cholesterol	59
Stroke	0
Ischemic Heart Disease	20
Depression	17
Chronic Kidney Disease	20
Asthma	8
Osteoperosis	7
Atrial Fibrilation	8
Heart Failure	8
Chronic Obstructive Pulmonary Disease	6
Diabetes	30
Dementia	0
Cancer	9

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Ferdinand Karl Engelhart III, OD treated as an optometrist in Nashua, NH during 2022 were eye procedures.

Volume of procedures performed by Ferdinand Karl Engelhart III, OD for Medicare patients.

doctor visit	115
eye procedures	280

2022 Medicare Patient Data

Information about Medicare patients treated by Ferdinand Karl Engelhart III, OD.

**Gender**
Male	83
Female	144

**Ethnicity**
Non-Hispanic White	214
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	123
From 75 to 84	81
85 and over	11
Less than 65	12

Conditions of Medicare patients treated by Ferdinand Karl Engelhart III, OD in 2022

Hypertension	62
High Cholesterol	72
Stroke	6
Ischemic Heart Disease	13
Depression	16
Chronic Kidney Disease	17
Asthma	12
Osteoperosis	15
Atrial Fibrilation	14
Heart Failure	7
Chronic Obstructive Pulmonary Disease	8
Diabetes	26
Dementia	0
Cancer	12

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

The top procedures that Ferdinand Karl Engelhart III, OD treated as an optometrist in Nashua, NH during 2023 were eye procedures.

Volume of procedures performed by Ferdinand Karl Engelhart III, OD for Medicare patients.

doctor visit	155
eye procedures	240

2023 Medicare Patient Data

Information about Medicare patients treated by Ferdinand Karl Engelhart III, OD.

**Gender**
Male	97
Female	151

**Ethnicity**
Non-Hispanic White	222
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	141
From 75 to 84	85
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Ferdinand Karl Engelhart III, OD in 2023

Hypertension	58
High Cholesterol	73
Stroke	6
Ischemic Heart Disease	16
Depression	14
Chronic Kidney Disease	13
Asthma	7
Osteoperosis	14
Atrial Fibrilation	14
Heart Failure	7
Chronic Obstructive Pulmonary Disease	7
Diabetes	27
Dementia	0
Cancer	15

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2023

Volume of procedures performed by Ferdinand Karl Engelhart III, OD for Medicare patients.

The highest averages for the top procedures that Ferdinand Karl Engelhart III, OD treated as an optometrist in Nashua, NH were eye procedures.

doctor visit	96
eye procedures	342

Average Medicare Patient Data From 2012 - 2023

Information about Medicare patients treated by Ferdinand Karl Engelhart III, OD.

**Gender**
Male	107
Female	183

**Ethnicity**
Black / African American	0
Asian / Pacific Islander	0
Non-Hispanic White	270
Hispanic	0
Native American / Alaskan Native	0
Other	0

**Age**
75 to 84	72
85 and over	17
Less than 65	31
65 to 74	166

Average of Total of Conditions of Medicare patients treated by Ferdinand Karl Engelhart III, OD From 2012 - 2023

The highest averages of the most common conditions of Medicare patients that Ferdinand Karl Engelhart III, OD treated were high cholesterol, hypertension, diabetes and depression.

Hypertension	49
High Cholesterol	52
Stroke	1
Ischemic Heart Disease	16
Depression	18
Chronic Kidney Disease	17
Asthma	7
Osteoporosis	7
Heart Failure	6
Chronic Obstructive Pulmonary Disease	6
Diabetes	22
Atrial Fibrillation	8
Cancer	9
Dementia	3

Education & Training

He has a state license in New Hampshire.

Licensed In: New Hampshire

Ratings & Reviews

Ferdinand Karl Engelhart III, OD has an exceptional overall rating with an average of 5.0 out of 5 stars based on 1 ratings. We collect ratings and reviews of Ferdinand Karl Engelhart III, OD from all over the web to help you find the right in Nashua, NH.

Overall Rating

(1 Rating)

Leave a Review

Reviews Left On DocSpot

Overall Rating: 5.0 2025-06-10

I have been seeing Dr.Engelhart for many years now at Nashua Eye Associates. He is very thorough for each and every appointment. He listens to your concerns and answers any questions you may have. Excellent optometrist and so glad I have had the opportunity to be his patient.  He also now sees my children as well. They also adore him too. He is great with kids too.

General Payments

These charts describe general payments received by Ferdinand Karl Engelhart III, OD. Doctors may receive payments for a number of reasons, including meal compensation, travel compensation, and consulting.

**Payments by Company**
Alcon Laboratories Inc	$2,125 DAILIES $287	Contact Lenses $54	$1,784
Bausch & Lomb Americas Inc.	$1,271 Infuse $864	VYZULTA $148	BIOTRUE $108	ALDEN SCLERAL ZENLENS $105	MIEBO $25	Other $21
Valeant Pharmaceuticals North America LLC	$554 BTOD $498	BIOTRUE ONE DAY $33	ULTRA $24
Bausch & Lomb, a division of Bausch Health US, LLC	$546 BTOD $202	VYZULTA $121	Infuse $106	PROLENSA $39	BIOTRUE ONE DAY $32	Other $46
Coopervision Inc.	$407 Clariti Contact Lens $207	Multiple Brands Contact Lens $103	CVI Contact Lens $82	Biofinity Contact Lens $16
Other	$1,815 TYRVAYA $242	Eylea $165	Rocklatan $152	Contact Lens $136	XIIDRA $127	Other $994

**Types of Payments**
Food and Beverage	$5,528
Travel and Lodging	$1,191

Biography

Dr. Ferdinand Engelhart practices optometry (primary eye care) in Nashua, NH. Dr. Engelhart has obtained a license to practice in New Hampshire.

Select Year:

Ferdinand Karl Engelhart III, OD

Office Locations

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 Ferdinand Karl Engelhart III, OD in 2013

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

2014 Medicare Patient Data

Conditions of Medicare patients treated by Ferdinand Karl Engelhart III, OD in 2014

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

2015 Medicare Patient Data

Conditions of Medicare patients treated by Ferdinand Karl Engelhart III, OD in 2015

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

2016 Medicare Patient Data

Conditions of Medicare patients treated by Ferdinand Karl Engelhart III, OD in 2016

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

2017 Medicare Patient Data

Conditions of Medicare patients treated by Ferdinand Karl Engelhart III, OD in 2017

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

2018 Medicare Patient Data

Conditions of Medicare patients treated by Ferdinand Karl Engelhart III, OD in 2018

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

2019 Medicare Patient Data

Conditions of Medicare patients treated by Ferdinand Karl Engelhart III, OD in 2019

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

2020 Medicare Patient Data

Conditions of Medicare patients treated by Ferdinand Karl Engelhart III, OD in 2020

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

2021 Medicare Patient Data

Conditions of Medicare patients treated by Ferdinand Karl Engelhart III, OD in 2021

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

2022 Medicare Patient Data

Conditions of Medicare patients treated by Ferdinand Karl Engelhart III, OD in 2022

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

2023 Medicare Patient Data

Conditions of Medicare patients treated by Ferdinand Karl Engelhart III, OD in 2023

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2023

Average Medicare Patient Data From 2012 - 2023

Average of Total of Conditions of Medicare patients treated by Ferdinand Karl Engelhart III, OD From 2012 - 2023

Education & Training

Ratings & Reviews

General Payments

Biography

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