“The new lawsuits, filed in late April, target neurologist William Hammesfahr, who owns The Villages Neurology, and John Sullivan's moving company, The Villages Moving and Storage.”—"The Villages sues businesses over its name", South Florida Sun-Sentinel, May 2017

“William Hammesfahr (search), a neurologist hired by Terri Schiavo's parents, looks at the same tape and sees a woman who is clearly reacting to her mother, turning toward her voice, smiling and...”—"Docs: Schiavo Videos Misleading", Fox News, March 2015

“Dr. William Hammesfahr, a Florida neurologist, said his examination of Schiavo found she is "definitely aware of her mother" and communicating through following instructions and in looking at people.”—"Doctors Disagree on Schiavo's Awareness", Fox News, March 2015

Noteworthy Medicare Patient Procedures Performed by Dr. William M. Hammesfahr, MD in 2024

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

Top 5%

By Volume:

electroencephalography

visual evoked potential test

In 2024, Dr. William M. Hammesfahr, MD performed more electroencephalography (EEG), and visual evoked potential test procedures for Medicare patients than 95% of providers in related specialties within Arizona.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. William M. Hammesfahr, MD treated as a vascular neurologist in Prescott, AZ during 2012 were diagnostic procedures, ultrasound (sonogram) and vascular procedures.

Volume of procedures performed by Dr. William M. Hammesfahr, MD for Medicare patients.

diagnostic procedures	775
doctor visit	1049
ultrasound (sonogram)	314
vascular procedures	314

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. William M. Hammesfahr, MD treated as a vascular neurologist in Prescott, AZ during 2013 were ultrasound (sonogram), vascular procedures and diagnostic procedures.

Volume of procedures performed by Dr. William M. Hammesfahr, MD for Medicare patients.

diagnostic procedures	74
doctor visit	818
ultrasound (sonogram)	228
vascular procedures	228

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. William M. Hammesfahr, MD.

**Gender**
Male	147
Female	135

**Age**
From 65 to 74	116
From 75 to 84	109
85 and over	43
Less than 65	14

Conditions of Medicare patients treated by Dr. William M. Hammesfahr, MD in 2013

Hypertension	75
High Cholesterol	75
Stroke	70
Ischemic Heart Disease	50
Depression	24
Chronic Kidney Disease	20
Asthma	6
Osteoperosis	14
Atrial Fibrilation	13
Heart Failure	21
Chronic Obstructive Pulmonary Disease	15
Diabetes	47
Dementia	29
Cancer	19

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. William M. Hammesfahr, MD treated as a vascular neurologist in Prescott, AZ during 2014 were ultrasound (sonogram), vascular procedures and diagnostic procedures.

Volume of procedures performed by Dr. William M. Hammesfahr, MD for Medicare patients.

diagnostic procedures	98
doctor visit	964
ultrasound (sonogram)	292
vascular procedures	292

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. William M. Hammesfahr, MD.

**Gender**
Male	141
Female	141

**Age**
From 65 to 74	109
From 75 to 84	111
85 and over	46
Less than 65	16

Conditions of Medicare patients treated by Dr. William M. Hammesfahr, MD in 2014

Hypertension	75
High Cholesterol	75
Stroke	75
Ischemic Heart Disease	52
Depression	27
Chronic Kidney Disease	18
Asthma	4
Osteoperosis	23
Atrial Fibrilation	18
Heart Failure	22
Chronic Obstructive Pulmonary Disease	16
Diabetes	50
Dementia	35
Cancer	26

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. William M. Hammesfahr, MD treated as a vascular neurologist in Prescott, AZ during 2015 were hospital care and inpatient care.

Volume of procedures performed by Dr. William M. Hammesfahr, MD for Medicare patients.

hospital care	429
inpatient care	429

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. William M. Hammesfahr, MD.

**Gender**
Male	120
Female	156

**Age**
From 65 to 74	0
From 75 to 84	110
85 and over	82
Less than 65	0

Conditions of Medicare patients treated by Dr. William M. Hammesfahr, MD in 2015

Hypertension	75
High Cholesterol	75
Stroke	71
Ischemic Heart Disease	67
Depression	74
Chronic Kidney Disease	41
Asthma	20
Osteoperosis	18
Atrial Fibrilation	33
Heart Failure	47
Chronic Obstructive Pulmonary Disease	32
Diabetes	41
Dementia	75
Cancer	20

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. William M. Hammesfahr, MD treated as a vascular neurologist in Prescott, AZ during 2016 were nursing home care, hospital care, inpatient care and chronic care.

Volume of procedures performed by Dr. William M. Hammesfahr, MD for Medicare patients.

chronic care	127
doctor visit	267
hospital care	137
inpatient care	137
nursing home care	987

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. William M. Hammesfahr, MD.

**Gender**
Male	229
Female	265

**Ethnicity**
Non-Hispanic White	469
Black	11
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	0
From 75 to 84	218
85 and over	151
Less than 65	0

Conditions of Medicare patients treated by Dr. William M. Hammesfahr, MD in 2016

Hypertension	75
High Cholesterol	75
Stroke	72
Ischemic Heart Disease	66
Depression	59
Chronic Kidney Disease	54
Asthma	33
Osteoperosis	14
Atrial Fibrilation	32
Heart Failure	44
Chronic Obstructive Pulmonary Disease	34
Diabetes	39
Dementia	75
Cancer	17

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. William M. Hammesfahr, MD treated as a vascular neurologist in Prescott, AZ during 2017 were nursing home care and chronic care.

Volume of procedures performed by Dr. William M. Hammesfahr, MD for Medicare patients.

chronic care	68
doctor visit	38
nursing home care	596

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. William M. Hammesfahr, MD.

**Gender**
Male	109
Female	152

**Ethnicity**
Non-Hispanic White	250
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	57
From 75 to 84	95
85 and over	95
Less than 65	14

Conditions of Medicare patients treated by Dr. William M. Hammesfahr, MD in 2017

Hypertension	75
High Cholesterol	74
Stroke	67
Ischemic Heart Disease	66
Depression	63
Chronic Kidney Disease	56
Asthma	6
Osteoperosis	15
Atrial Fibrilation	32
Heart Failure	48
Chronic Obstructive Pulmonary Disease	36
Diabetes	44
Dementia	55
Cancer	16

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. William M. Hammesfahr, MD treated as a vascular neurologist in Prescott, AZ during 2018 were nursing home care and chronic care.

Volume of procedures performed by Dr. William M. Hammesfahr, MD for Medicare patients.

chronic care	11
nursing home care	166

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. William M. Hammesfahr, MD.

**Gender**
Male	22
Female	23

**Age**
From 65 to 74	0
From 75 to 84	19
85 and over	14
Less than 65	0

Conditions of Medicare patients treated by Dr. William M. Hammesfahr, MD in 2018

Hypertension	75
High Cholesterol	75
Stroke	75
Ischemic Heart Disease	71
Depression	75
Chronic Kidney Disease	75
Asthma	0
Osteoperosis	0
Atrial Fibrilation	40
Heart Failure	62
Chronic Obstructive Pulmonary Disease	40
Diabetes	47
Dementia	75
Cancer	0

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

Volume of procedures performed by Dr. William M. Hammesfahr, MD for Medicare patients.

doctor visit	55

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. William M. Hammesfahr, MD.

**Gender**
Male	20
Female	35

**Ethnicity**
Non-Hispanic White	32
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	28
From 75 to 84	0
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. William M. Hammesfahr, MD in 2020

Hypertension	75
High Cholesterol	75
Stroke	0
Ischemic Heart Disease	73
Depression	58
Chronic Kidney Disease	44
Asthma	24
Osteoperosis	24
Atrial Fibrilation	0
Heart Failure	47
Chronic Obstructive Pulmonary Disease	20
Diabetes	56
Dementia	27
Cancer	0

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. William M. Hammesfahr, MD treated as a vascular neurologist in Prescott, AZ during 2021 were nursing home care.

Volume of procedures performed by Dr. William M. Hammesfahr, MD for Medicare patients.

doctor visit	12
nursing home care	347

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. William M. Hammesfahr, MD.

**Gender**
Male	36
Female	35

**Ethnicity**
Non-Hispanic White	29
Black	11
Hispanic	0
Asian	19
Other	0
Native American	0

**Age**
From 65 to 74	21
From 75 to 84	27
85 and over	11
Less than 65	12

Conditions of Medicare patients treated by Dr. William M. Hammesfahr, MD in 2021

Hypertension	75
High Cholesterol	65
Stroke	54
Ischemic Heart Disease	56
Depression	52
Chronic Kidney Disease	59
Asthma	0
Osteoperosis	17
Atrial Fibrilation	0
Heart Failure	42
Chronic Obstructive Pulmonary Disease	25
Diabetes	63
Dementia	56
Cancer	0

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. William M. Hammesfahr, MD treated as a vascular neurologist in Prescott, AZ during 2022 were nursing home care.

Volume of procedures performed by Dr. William M. Hammesfahr, MD for Medicare patients.

nursing home care	205

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. William M. Hammesfahr, MD.

**Gender**
Male	25
Female	19

**Ethnicity**
Non-Hispanic White	19
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	16
From 75 to 84	13
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. William M. Hammesfahr, MD in 2022

Hypertension	75
High Cholesterol	75
Stroke	75
Ischemic Heart Disease	34
Depression	52
Chronic Kidney Disease	43
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	34
Chronic Obstructive Pulmonary Disease	25
Diabetes	64
Dementia	45
Cancer	0

Medicare Procedure and Patient Information

2024 Medicare Procedure Volume

The top procedures that Dr. William M. Hammesfahr, MD treated as a vascular neurologist in Prescott, AZ during 2024 were evoked potential test and electroencephalography (EEG).

Volume of procedures performed by Dr. William M. Hammesfahr, MD for Medicare patients.

electroencephalography (EEG)	12
evoked potential test	12

Conditions of Medicare patients treated by Dr. William M. Hammesfahr, MD in 2024

Hypertension	75
High Cholesterol	75
Stroke	0
Ischemic Heart Disease	75
Depression	75
Chronic Kidney Disease	0
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	75
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2024

Volume of procedures performed by Dr. William M. Hammesfahr, MD for Medicare patients.

The highest averages for the top procedures that Dr. William M. Hammesfahr, MD treated as a vascular neurologist in Prescott, AZ were nursing home care, diagnostic procedures, hospital care and inpatient care.

chronic care	68
diagnostic procedures	315
doctor visit	457
electroencephalography (EEG)	12
evoked potential test	12
hospital care	283
inpatient care	283
nursing home care	460
ultrasound (sonogram)	278
vascular procedures	278

Average Medicare Patient Data From 2012 - 2024

Information about Medicare patients treated by Dr. William M. Hammesfahr, MD.

**Gender**
Female	87
Male	77

**Ethnicity**
Black / African American	2
Asian / Pacific Islander	1
Non-Hispanic White	72
Hispanic	0
Native American / Alaskan Native	0
Other	0

**Age**
85 and over	40
75 to 84	63
Less than 65	5
65 to 74	31

Average of Total of Conditions of Medicare patients treated by Dr. William M. Hammesfahr, MD From 2012 - 2024

The highest averages of the most common conditions of Medicare patients that Dr. William M. Hammesfahr, MD treated were hypertension, high cholesterol, ischemic heart disease and depression.

Hypertension	68
High Cholesterol	67
Stroke	50
Ischemic Heart Disease	55
Depression	50
Chronic Kidney Disease	37
Asthma	8
Osteoporosis	11
Heart Failure	33
Chronic Obstructive Pulmonary Disease	22
Diabetes	47
Atrial Fibrillation	15
Cancer	8
Dementia	42

Education & Training

He has a state license in Florida.

Licensed In: Florida

Ratings & Reviews

Dr. William M. Hammesfahr, MD has a good overall rating with an average of 3.38 out of 5 stars based on 4 ratings. We collect ratings and reviews of Dr. William M. Hammesfahr, MD from all over the web to help you find the right in Prescott, AZ.

3.38

Overall Rating

(4 Ratings)

Leave a Review

General Payments

These charts describe general payments received by Dr. William M. Hammesfahr, MD. Doctors may receive payments for a number of reasons, including meal compensation, travel compensation, and consulting.

**Payments by Company**
Endologix, Inc.	$178 Pevar $178
ACell, Inc.	$91 $91
Piramal Imaging Limited	$68 NeuraCeq $68
IBA Molecular North America, Inc.	$58 $58
Boston Scientific Corporation	$21 Varithena Administration Pack $21
Other	$35 SYMPROIC $21	Omniscan $15

**Types of Payments**
Food and Beverage	$452

Research Payments

Dr. William M. Hammesfahr, MD has received 2 research payments totaling $5,100.

Biography

Dr. William Hammesfahr is a vascular neurology and neurodevelopmental disabilities specialist in Lady Lake, FL. His average patient rating is 3.5 stars (out of 5).

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Dr. William M. Hammesfahr, MD

Office Locations

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Noteworthy Medicare Patient Procedures Performed by Dr. William M. Hammesfahr, MD in 2024

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. William M. Hammesfahr, MD in 2013

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

2014 Medicare Patient Data

Conditions of Medicare patients treated by Dr. William M. Hammesfahr, MD in 2014

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

2015 Medicare Patient Data

Conditions of Medicare patients treated by Dr. William M. Hammesfahr, MD in 2015

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

2016 Medicare Patient Data

Conditions of Medicare patients treated by Dr. William M. Hammesfahr, MD in 2016

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

2017 Medicare Patient Data

Conditions of Medicare patients treated by Dr. William M. Hammesfahr, MD in 2017

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

2018 Medicare Patient Data

Conditions of Medicare patients treated by Dr. William M. Hammesfahr, MD in 2018

Medicare Procedure and Patient Information

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

2020 Medicare Patient Data

Conditions of Medicare patients treated by Dr. William M. Hammesfahr, MD in 2020

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

2021 Medicare Patient Data

Conditions of Medicare patients treated by Dr. William M. Hammesfahr, MD in 2021

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

2022 Medicare Patient Data

Conditions of Medicare patients treated by Dr. William M. Hammesfahr, MD in 2022

Medicare Procedure and Patient Information

Medicare Procedure and Patient Information

2024 Medicare Procedure Volume

Conditions of Medicare patients treated by Dr. William M. Hammesfahr, MD in 2024

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2024

Average Medicare Patient Data From 2012 - 2024

Average of Total of Conditions of Medicare patients treated by Dr. William M. Hammesfahr, MD From 2012 - 2024

Education & Training

Ratings & Reviews

General Payments

Research Payments

Biography

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