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Dr. William Henry Wismer, DO

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Specializes in: Adult Gastroenterology

Lake Erie College of Osteopathic Medicine (2000)

965 Shamrock Lane
Corry, PA 16407

(814) 665-8288

Dr. William Henry Wismer, DO is a gastroenterologist in Warren, PA specializing in adult gastroenterology. He graduated from Lake Erie College of Osteopathic Medicine in 2000 and has 26 years of experience. Dr. William Henry Wismer, DO is affiliated with Warren General Hospital.

Office Locations

2 Crescent Park West Second Floor
Warren, PA 16365

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2010 W 38th Street
Erie, PA 16508

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965 Shamrock Lane
Corry, PA 16407

(814) 665-8288

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Noteworthy Medicare Patient Procedures Performed by Dr. William Henry Wismer, DO in 2024

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

Top 25%

By Affordability:

colon biopsy

colonoscopy

colonoscopy with biopsy

colonoscopy with lesion removal

diagnostic colonoscopy

diagnostic EGD

diagnostic upper endoscopy

EGD with biopsy

EGD with lesion removal

esophagogastroduodenoscopy

lower endoscopy

therapeutic colonoscopy

therapeutic EGD

therapeutic upper endoscopy

upper endoscopy

upper endoscopy with biopsy

upper endoscopy with lesion removal

In 2012, Dr. William Henry Wismer, DO had a list price for colon biopsy, colonoscopy, colonoscopy with biopsy, colonoscopy with lesion removal, diagnostic colonoscopy, diagnostic EGD, diagnostic upper endoscopy, EGD with biopsy, EGD with lesion removal, esophagogastroduodenoscopy (EGD), lower endoscopy, therapeutic colonoscopy, therapeutic EGD, therapeutic upper endoscopy, upper endoscopy, upper endoscopy with biopsy, and upper endoscopy with lesion removal that was lower than the list prices billed to Medicare by 75% of providers in related specialties within Pennsylvania. 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. William Henry Wismer, DO treated as a gastroenterologist in Warren, PA during 2012 were removal of lesion (e.g. growth), minimally invasive procedures, diagnostic procedures and gastrointestinal procedures.

Volume of procedures performed by Dr. William Henry Wismer, DO for Medicare patients.

diagnostic procedures	163
doctor visit	167
gastrointestinal procedures	163
hospital care	114
inpatient care	114
minimally invasive procedures	163
removal of lesion (e.g. growth)	163

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. William Henry Wismer, DO treated as a gastroenterologist in Warren, PA during 2013 were removal of lesion (e.g. growth), minimally invasive procedures, diagnostic procedures and gastrointestinal procedures.

Volume of procedures performed by Dr. William Henry Wismer, DO for Medicare patients.

diagnostic procedures	161
doctor visit	142
gastrointestinal procedures	161
hospital care	105
inpatient care	105
minimally invasive procedures	161
removal of lesion (e.g. growth)	161

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. William Henry Wismer, DO.

**Gender**
Male	68
Female	93

**Ethnicity**
Non-Hispanic White	149
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	48
From 75 to 84	27
85 and over	19
Less than 65	67

Conditions of Medicare patients treated by Dr. William Henry Wismer, DO in 2013

Hypertension	67
High Cholesterol	51
Stroke	0
Ischemic Heart Disease	37
Depression	35
Chronic Kidney Disease	25
Asthma	13
Osteoperosis	11
Atrial Fibrilation	9
Heart Failure	25
Chronic Obstructive Pulmonary Disease	19
Diabetes	30
Dementia	21
Cancer	12

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. William Henry Wismer, DO treated as a gastroenterologist in Warren, PA during 2014 were removal of lesion (e.g. growth), minimally invasive procedures, diagnostic procedures and gastrointestinal procedures.

Volume of procedures performed by Dr. William Henry Wismer, DO for Medicare patients.

diagnostic procedures	173
doctor visit	158
gastrointestinal procedures	173
hospital care	131
inpatient care	131
minimally invasive procedures	173
removal of lesion (e.g. growth)	173

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. William Henry Wismer, DO.

**Gender**
Male	79
Female	104

**Ethnicity**
Non-Hispanic White	171
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	62
From 75 to 84	0
85 and over	0
Less than 65	84

Conditions of Medicare patients treated by Dr. William Henry Wismer, DO in 2014

Hypertension	68
High Cholesterol	60
Stroke	0
Ischemic Heart Disease	38
Depression	43
Chronic Kidney Disease	22
Asthma	15
Osteoperosis	10
Atrial Fibrilation	12
Heart Failure	20
Chronic Obstructive Pulmonary Disease	17
Diabetes	35
Dementia	15
Cancer	8

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. William Henry Wismer, DO treated as a gastroenterologist in Warren, PA during 2015 were removal of lesion (e.g. growth), minimally invasive procedures, diagnostic procedures and gastrointestinal procedures.

Volume of procedures performed by Dr. William Henry Wismer, DO for Medicare patients.

diagnostic procedures	195
doctor visit	205
gastrointestinal procedures	195
hospital care	147
inpatient care	147
minimally invasive procedures	195
removal of lesion (e.g. growth)	195

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. William Henry Wismer, DO.

**Gender**
Male	172
Female	244

**Ethnicity**
Non-Hispanic White	374
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	128
From 75 to 84	68
85 and over	26
Less than 65	194

Conditions of Medicare patients treated by Dr. William Henry Wismer, DO in 2015

Hypertension	69
High Cholesterol	57
Stroke	0
Ischemic Heart Disease	36
Depression	42
Chronic Kidney Disease	22
Asthma	18
Osteoperosis	8
Atrial Fibrilation	10
Heart Failure	18
Chronic Obstructive Pulmonary Disease	22
Diabetes	32
Dementia	18
Cancer	12

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. William Henry Wismer, DO treated as a gastroenterologist in Warren, PA during 2016 were removal of lesion (e.g. growth), minimally invasive procedures, diagnostic procedures and gastrointestinal procedures.

Volume of procedures performed by Dr. William Henry Wismer, DO for Medicare patients.

diagnostic procedures	189
doctor visit	227
gastrointestinal procedures	189
hospital care	127
inpatient care	127
minimally invasive procedures	189
removal of lesion (e.g. growth)	189

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. William Henry Wismer, DO.

**Gender**
Male	77
Female	110

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

**Age**
From 65 to 74	67
From 75 to 84	41
85 and over	11
Less than 65	68

Conditions of Medicare patients treated by Dr. William Henry Wismer, DO in 2016

Hypertension	74
High Cholesterol	63
Stroke	0
Ischemic Heart Disease	39
Depression	42
Chronic Kidney Disease	32
Asthma	27
Osteoperosis	9
Atrial Fibrilation	10
Heart Failure	19
Chronic Obstructive Pulmonary Disease	19
Diabetes	32
Dementia	23
Cancer	10

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. William Henry Wismer, DO treated as a gastroenterologist in Warren, PA during 2017 were removal of lesion (e.g. growth), minimally invasive procedures, diagnostic procedures and gastrointestinal procedures.

Volume of procedures performed by Dr. William Henry Wismer, DO for Medicare patients.

diagnostic procedures	145
doctor visit	141
gastrointestinal procedures	145
hospital care	130
inpatient care	130
minimally invasive procedures	145
removal of lesion (e.g. growth)	145

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. William Henry Wismer, DO.

**Gender**
Male	61
Female	93

**Age**
From 65 to 74	56
From 75 to 84	34
85 and over	23
Less than 65	41

Conditions of Medicare patients treated by Dr. William Henry Wismer, DO in 2017

Hypertension	71
High Cholesterol	57
Stroke	8
Ischemic Heart Disease	39
Depression	49
Chronic Kidney Disease	36
Asthma	10
Osteoperosis	16
Atrial Fibrilation	13
Heart Failure	27
Chronic Obstructive Pulmonary Disease	24
Diabetes	36
Dementia	32
Cancer	13

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. William Henry Wismer, DO treated as a gastroenterologist in Warren, PA during 2018 were hospital care, inpatient care, removal of lesion (e.g. growth) and minimally invasive procedures.

Volume of procedures performed by Dr. William Henry Wismer, DO for Medicare patients.

diagnostic procedures	110
doctor visit	141
gastrointestinal procedures	110
hospital care	143
inpatient care	143
minimally invasive procedures	110
removal of lesion (e.g. growth)	110

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. William Henry Wismer, DO.

**Gender**
Male	68
Female	87

**Ethnicity**
Non-Hispanic White	137
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	48
From 75 to 84	31
85 and over	22
Less than 65	54

Conditions of Medicare patients treated by Dr. William Henry Wismer, DO in 2018

Hypertension	74
High Cholesterol	68
Stroke	10
Ischemic Heart Disease	44
Depression	54
Chronic Kidney Disease	45
Asthma	19
Osteoperosis	10
Atrial Fibrilation	14
Heart Failure	25
Chronic Obstructive Pulmonary Disease	27
Diabetes	40
Dementia	34
Cancer	10

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. William Henry Wismer, DO treated as a gastroenterologist in Warren, PA during 2019 were minimally invasive procedures, gastrointestinal procedures, removal of lesion (e.g. growth) and diagnostic procedures.

Volume of procedures performed by Dr. William Henry Wismer, DO for Medicare patients.

diagnostic procedures	136
doctor visit	163
gastrointestinal procedures	149
hospital care	75
inpatient care	75
minimally invasive procedures	149
removal of lesion (e.g. growth)	136

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. William Henry Wismer, DO.

**Gender**
Male	68
Female	90

**Ethnicity**
Non-Hispanic White	143
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	68
From 75 to 84	28
85 and over	13
Less than 65	49

Conditions of Medicare patients treated by Dr. William Henry Wismer, DO in 2019

Hypertension	72
High Cholesterol	65
Stroke	8
Ischemic Heart Disease	42
Depression	46
Chronic Kidney Disease	34
Asthma	11
Osteoperosis	8
Atrial Fibrilation	8
Heart Failure	24
Chronic Obstructive Pulmonary Disease	28
Diabetes	28
Dementia	23
Cancer	0

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. William Henry Wismer, DO treated as a gastroenterologist in Warren, PA during 2020 were removal of lesion (e.g. growth), minimally invasive procedures, diagnostic procedures and gastrointestinal procedures.

Volume of procedures performed by Dr. William Henry Wismer, DO for Medicare patients.

diagnostic procedures	101
doctor visit	105
gastrointestinal procedures	101
hospital care	86
inpatient care	86
minimally invasive procedures	101
removal of lesion (e.g. growth)	101

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. William Henry Wismer, DO.

**Gender**
Male	59
Female	74

**Ethnicity**
Non-Hispanic White	113
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	63
From 75 to 84	26
85 and over	14
Less than 65	30

Conditions of Medicare patients treated by Dr. William Henry Wismer, DO in 2020

Hypertension	74
High Cholesterol	65
Stroke	11
Ischemic Heart Disease	50
Depression	48
Chronic Kidney Disease	33
Asthma	8
Osteoperosis	0
Atrial Fibrilation	10
Heart Failure	27
Chronic Obstructive Pulmonary Disease	26
Diabetes	34
Dementia	20
Cancer	0

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. William Henry Wismer, DO treated as a gastroenterologist in Warren, PA during 2021 were removal of lesion (e.g. growth), minimally invasive procedures, diagnostic procedures and gastrointestinal procedures.

Volume of procedures performed by Dr. William Henry Wismer, DO for Medicare patients.

diagnostic procedures	88
doctor visit	88
gastrointestinal procedures	88
hospital care	29
inpatient care	29
minimally invasive procedures	88
removal of lesion (e.g. growth)	88

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. William Henry Wismer, DO.

**Gender**
Male	62
Female	53

**Age**
From 65 to 74	54
From 75 to 84	30
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. William Henry Wismer, DO in 2021

Hypertension	74
High Cholesterol	73
Stroke	12
Ischemic Heart Disease	45
Depression	43
Chronic Kidney Disease	37
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	21
Chronic Obstructive Pulmonary Disease	17
Diabetes	35
Dementia	15
Cancer	0

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. William Henry Wismer, DO treated as a gastroenterologist in Warren, PA during 2022 were removal of lesion (e.g. growth), minimally invasive procedures, diagnostic procedures and gastrointestinal procedures.

Volume of procedures performed by Dr. William Henry Wismer, DO for Medicare patients.

diagnostic procedures	133
doctor visit	176
gastrointestinal procedures	133
minimally invasive procedures	133
removal of lesion (e.g. growth)	133

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. William Henry Wismer, DO.

**Gender**
Male	91
Female	87

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

**Age**
From 65 to 74	106
From 75 to 84	33
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. William Henry Wismer, DO in 2022

Hypertension	75
High Cholesterol	74
Stroke	8
Ischemic Heart Disease	25
Depression	35
Chronic Kidney Disease	15
Asthma	10
Osteoperosis	13
Atrial Fibrilation	13
Heart Failure	13
Chronic Obstructive Pulmonary Disease	21
Diabetes	35
Dementia	7
Cancer	14

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

The top procedures that Dr. William Henry Wismer, DO treated as a gastroenterologist in Warren, PA during 2023 were removal of lesion (e.g. growth), minimally invasive procedures, diagnostic procedures and gastrointestinal procedures.

Volume of procedures performed by Dr. William Henry Wismer, DO for Medicare patients.

diagnostic procedures	173
doctor visit	155
gastrointestinal procedures	173
minimally invasive procedures	173
removal of lesion (e.g. growth)	173

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. William Henry Wismer, DO.

**Gender**
Male	89
Female	111

**Age**
From 65 to 74	116
From 75 to 84	63
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. William Henry Wismer, DO in 2023

Hypertension	75
High Cholesterol	75
Stroke	7
Ischemic Heart Disease	23
Depression	25
Chronic Kidney Disease	14
Asthma	9
Osteoperosis	16
Atrial Fibrilation	15
Heart Failure	11
Chronic Obstructive Pulmonary Disease	17
Diabetes	35
Dementia	0
Cancer	18

Medicare Procedure and Patient Information

2024 Medicare Procedure Volume

The top procedures that Dr. William Henry Wismer, DO treated as a gastroenterologist in Warren, PA during 2024 were removal of lesion (e.g. growth), minimally invasive procedures, diagnostic procedures and gastrointestinal procedures.

Volume of procedures performed by Dr. William Henry Wismer, DO for Medicare patients.

diagnostic procedures	159
doctor visit	146
gastrointestinal procedures	159
minimally invasive procedures	159
removal of lesion (e.g. growth)	159

2024 Medicare Patient Data

Information about Medicare patients treated by Dr. William Henry Wismer, DO.

**Gender**
Male	94
Female	91

**Age**
From 65 to 74	119
From 75 to 84	38
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. William Henry Wismer, DO in 2024

Hypertension	75
High Cholesterol	75
Stroke	0
Ischemic Heart Disease	20
Depression	23
Chronic Kidney Disease	15
Asthma	10
Osteoperosis	14
Atrial Fibrilation	11
Heart Failure	12
Chronic Obstructive Pulmonary Disease	14
Diabetes	34
Dementia	0
Cancer	15

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2024

Volume of procedures performed by Dr. William Henry Wismer, DO for Medicare patients.

The highest averages for the top procedures that Dr. William Henry Wismer, DO treated as a gastroenterologist in Warren, PA were minimally invasive procedures, gastrointestinal procedures, removal of lesion (e.g. growth) and diagnostic procedures.

diagnostic procedures	148
doctor visit	154
gastrointestinal procedures	149
hospital care	108
inpatient care	108
minimally invasive procedures	149
removal of lesion (e.g. growth)	148

Average Medicare Patient Data From 2012 - 2024

Information about Medicare patients treated by Dr. William Henry Wismer, DO.

**Gender**
Male	76
Female	95

**Ethnicity**
Black / African American	0
Asian / Pacific Islander	0
Non-Hispanic White	109
Hispanic	0
Native American / Alaskan Native	0
Other	0

**Age**
75 to 84	32
85 and over	9
Less than 65	45
65 to 74	71

Average of Total of Conditions of Medicare patients treated by Dr. William Henry Wismer, DO From 2012 - 2024

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

Hypertension	66
High Cholesterol	60
Stroke	4
Ischemic Heart Disease	33
Depression	37
Chronic Kidney Disease	25
Asthma	11
Osteoporosis	8
Heart Failure	18
Chronic Obstructive Pulmonary Disease	19
Diabetes	31
Atrial Fibrillation	9
Cancer	8
Dementia	16

Education & Training

Dr. William Henry Wismer, DO graduated from Lake Erie College of Osteopathic Medicine in 2000. He completed residency at Millcreek Community Hospital. He is certified by the American Board of Internal Medicine American Board of Internal Medicine - Gastroenterology and has a state license in Pennsylvania.

Medical School: Lake Erie College of Osteopathic Medicine (2000)

Residency: Millcreek Community Hospital

Board Certification: American Board of Internal Medicine American Board of Internal Medicine - Gastroenterology

Licensed In: Pennsylvania

Affiliations & Hospitals

Dr. William Henry Wismer, DO is associated with these hospitals and organizations:

Warren General Hospital

Ratings & Reviews

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General Payments

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

**Payments by Company**
AbbVie Inc.	$3,370 Rinvoq $818	Humira $790	Skyrizi $700	Creon $478	LINZESS $369	Other $215
Janssen Biotech, Inc.	$1,249 STELARA $887	SIMPONI $159	Tremfya $157	SIMPONI ARIA $46
Daiichi Sankyo Inc.	$1,114 Injectafer $1,013	MOVANTIK $101
Pfizer Inc.	$1,030 XELJANZ $639	LYRICA $193	VELSIPITY $168	PAXLOVID $16	COLOGUARD DNA CAPTURE REAGENTS $15
Takeda Pharmaceuticals U.S.A., Inc.	$884 ENTYVIO $600	AMITIZA $80	GATTEX $79	MOTEGRITY $72	Trintellix $23	Other $30
Other	$6,349 Trulance $486	ZEPOSIA $484	Humira $475	GI Solutions $411	XIFAXAN $353	Other $4,140

**Types of Payments**
Food and Beverage	$13,542
Travel and Lodging	$342
Consulting Fee	$80
Education	$33

Biography

Dr. William Wismer practices adult gastroenterology. Dr. Wismer is professionally affiliated with Warren General Hospital. He attended Lake Erie College of Osteopathic Medicine for medical school and subsequently trained at Millcreek Community Hospital for residency.

Select Year:

Dr. William Henry Wismer, DO

Office Locations

Noteworthy Medicare Patient Procedures Performed by Dr. William Henry Wismer, DO in 2024

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. William Henry Wismer, DO in 2013

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

2014 Medicare Patient Data

Conditions of Medicare patients treated by Dr. William Henry Wismer, DO in 2014

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

2015 Medicare Patient Data

Conditions of Medicare patients treated by Dr. William Henry Wismer, DO in 2015

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

2016 Medicare Patient Data

Conditions of Medicare patients treated by Dr. William Henry Wismer, DO in 2016

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

2017 Medicare Patient Data

Conditions of Medicare patients treated by Dr. William Henry Wismer, DO in 2017

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

2018 Medicare Patient Data

Conditions of Medicare patients treated by Dr. William Henry Wismer, DO in 2018

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

2019 Medicare Patient Data

Conditions of Medicare patients treated by Dr. William Henry Wismer, DO in 2019

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

2020 Medicare Patient Data

Conditions of Medicare patients treated by Dr. William Henry Wismer, DO in 2020

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

2021 Medicare Patient Data

Conditions of Medicare patients treated by Dr. William Henry Wismer, DO in 2021

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

2022 Medicare Patient Data

Conditions of Medicare patients treated by Dr. William Henry Wismer, DO in 2022

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

2023 Medicare Patient Data

Conditions of Medicare patients treated by Dr. William Henry Wismer, DO in 2023

Medicare Procedure and Patient Information

2024 Medicare Procedure Volume

2024 Medicare Patient Data

Conditions of Medicare patients treated by Dr. William Henry Wismer, DO 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 Henry Wismer, DO From 2012 - 2024

Education & Training

Affiliations & Hospitals

Ratings & Reviews

General Payments

Biography

Other Providers in Warren, PA