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Dr. William S. Ritter, MD

Accepting New Patients

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Specializes in: Adult Cardiology

Thomas Jefferson University, Jefferson Medical College (1971)

9119 W 74th Street Suite 350
Merriam, KS 66204

(913) 632-9400

Dr. William S. Ritter, MD is a cardiologist in Merriam, KS specializing in adult cardiology. He graduated from Thomas Jefferson University, Jefferson Medical College in 1971 and has 55 years of experience. Dr. William S. Ritter, MD is affiliated with SHAWNEE MISSION MEDICAL CENTER INC.

Office Locations

9119 W 74th Street Suite 350
Merriam, KS 66204

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7840 W 165th Street Suite 260
Overland Park, KS 66223

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Noteworthy Medicare Patient Procedures Performed by Dr. William S. Ritter, MD in 2023

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

Top 10%

By Affordability:

cardiac imaging

In 2023, Dr. William S. Ritter, MD had a list price for cardiac imaging that was lower than the list prices billed to Medicare by 90% of providers in related specialties within Kansas. 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 Affordability:

cardiac stress testing

color Doppler echocardiography

Doppler echocardiography

echocardiogram

spectral Doppler echocardiography

stress testing

In 2012, Dr. William S. Ritter, MD had a list price for cardiac (heart) stress testing, color Doppler echocardiography, Doppler echocardiography, echocardiogram (echo), spectral Doppler echocardiography, and stress testing that was lower than the list prices billed to Medicare by 75% of providers in related specialties within Kansas. 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 S. Ritter, MD treated as a cardiologist in Merriam, KS during 2012 were cardiac procedures, lab tests, inpatient care and hospital care.

Volume of procedures performed by Dr. William S. Ritter, MD for Medicare patients.

abdominal imaging	12
ambulatory monitoring	35
cardiac procedures	1080
cardioversion	27
catheterization	37
diagnostic procedures	37
doctor visit	1507
hospital care	657
inpatient care	657
lab tests	1062
minimally invasive procedures	78
nuclear scan	238
preventive care	17
stress testing	494
ultrasound (sonogram)	604
vaccines	17
vascular procedures	54

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. William S. Ritter, MD treated as a cardiologist in Merriam, KS during 2013 were cardiac procedures, lab tests, inpatient care and hospital care.

Volume of procedures performed by Dr. William S. Ritter, MD for Medicare patients.

ambulatory monitoring	50
cardiac procedures	960
cardioversion	22
catheterization	33
diagnostic procedures	33
doctor visit	1392
hospital care	691
inpatient care	691
lab tests	850
minimally invasive procedures	59
nuclear scan	211
stress testing	412
ultrasound (sonogram)	507
vascular procedures	33

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. William S. Ritter, MD.

**Gender**
Male	1060
Female	1129

**Ethnicity**
Non-Hispanic White	2002
Black	89
Hispanic	62
Asian	18
Other	0
Native American	0

**Age**
From 65 to 74	663
From 75 to 84	781
85 and over	561
Less than 65	184

Conditions of Medicare patients treated by Dr. William S. Ritter, MD in 2013

Hypertension	75
High Cholesterol	66
Stroke	9
Ischemic Heart Disease	62
Depression	21
Chronic Kidney Disease	31
Asthma	6
Osteoperosis	9
Atrial Fibrilation	37
Heart Failure	37
Chronic Obstructive Pulmonary Disease	23
Diabetes	37
Dementia	14
Cancer	13

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. William S. Ritter, MD treated as a cardiologist in Merriam, KS during 2014 were cardiac procedures, hospital care, inpatient care and ultrasound (sonogram).

Volume of procedures performed by Dr. William S. Ritter, MD for Medicare patients.

ambulatory monitoring	18
cardiac procedures	619
cardioversion	11
catheterization	15
diagnostic procedures	15
doctor visit	634
hospital care	570
inpatient care	570
minimally invasive procedures	39
nuclear scan	122
stress testing	211
ultrasound (sonogram)	387
vascular procedures	15

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. William S. Ritter, MD.

**Gender**
Male	776
Female	921

**Ethnicity**
Non-Hispanic White	1525
Black	79
Hispanic	53
Asian	0
Other	19
Native American	0

**Age**
From 65 to 74	517
From 75 to 84	522
85 and over	482
Less than 65	176

Conditions of Medicare patients treated by Dr. William S. Ritter, MD in 2014

Hypertension	75
High Cholesterol	70
Stroke	11
Ischemic Heart Disease	61
Depression	30
Chronic Kidney Disease	35
Asthma	10
Osteoperosis	10
Atrial Fibrilation	35
Heart Failure	40
Chronic Obstructive Pulmonary Disease	26
Diabetes	39
Dementia	18
Cancer	14

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. William S. Ritter, MD treated as a cardiologist in Merriam, KS during 2015 were hospital care, inpatient care, cardiac procedures and ultrasound (sonogram).

Volume of procedures performed by Dr. William S. Ritter, MD for Medicare patients.

cardiac procedures	426
doctor visit	12
hospital care	584
inpatient care	562
minimally invasive procedures	13
nuclear scan	67
outpatient care	22
stress testing	178
ultrasound (sonogram)	269

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. William S. Ritter, MD.

**Gender**
Male	1104
Female	1558

**Ethnicity**
Non-Hispanic White	2280
Black	212
Hispanic	110
Asian	0
Other	30
Native American	0

**Age**
From 65 to 74	876
From 75 to 84	728
85 and over	656
Less than 65	402

Conditions of Medicare patients treated by Dr. William S. Ritter, MD in 2015

Hypertension	75
High Cholesterol	68
Stroke	14
Ischemic Heart Disease	59
Depression	35
Chronic Kidney Disease	43
Asthma	20
Osteoperosis	12
Atrial Fibrilation	33
Heart Failure	44
Chronic Obstructive Pulmonary Disease	29
Diabetes	40
Dementia	22
Cancer	15

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. William S. Ritter, MD treated as a cardiologist in Merriam, KS during 2016 were hospital care, inpatient care, cardiac procedures and ultrasound (sonogram).

Volume of procedures performed by Dr. William S. Ritter, MD for Medicare patients.

cardiac procedures	485
cardioversion	18
doctor visit	36
hospital care	535
inpatient care	520
minimally invasive procedures	17
nuclear scan	84
outpatient care	15
stress testing	213
ultrasound (sonogram)	290

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. William S. Ritter, MD.

**Gender**
Male	354
Female	501

**Ethnicity**
Non-Hispanic White	756
Black	45
Hispanic	29
Asian	0
Other	13
Native American	0

**Age**
From 65 to 74	257
From 75 to 84	268
85 and over	224
Less than 65	106

Conditions of Medicare patients treated by Dr. William S. Ritter, MD in 2016

Hypertension	75
High Cholesterol	71
Stroke	16
Ischemic Heart Disease	59
Depression	32
Chronic Kidney Disease	52
Asthma	30
Osteoperosis	12
Atrial Fibrilation	38
Heart Failure	53
Chronic Obstructive Pulmonary Disease	29
Diabetes	43
Dementia	25
Cancer	15

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. William S. Ritter, MD treated as a cardiologist in Merriam, KS during 2017 were hospital care, inpatient care, cardiac procedures and ultrasound (sonogram).

Volume of procedures performed by Dr. William S. Ritter, MD for Medicare patients.

cardiac procedures	474
cardioversion	22
doctor visit	53
hospital care	549
inpatient care	549
minimally invasive procedures	19
nuclear scan	81
stress testing	205
ultrasound (sonogram)	292

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. William S. Ritter, MD.

**Gender**
Male	382
Female	397

**Ethnicity**
Non-Hispanic White	692
Black	39
Hispanic	18
Asian	0
Other	17
Native American	0

**Age**
From 65 to 74	272
From 75 to 84	230
85 and over	201
Less than 65	76

Conditions of Medicare patients treated by Dr. William S. Ritter, MD in 2017

Hypertension	75
High Cholesterol	69
Stroke	10
Ischemic Heart Disease	61
Depression	34
Chronic Kidney Disease	54
Asthma	9
Osteoperosis	9
Atrial Fibrilation	38
Heart Failure	49
Chronic Obstructive Pulmonary Disease	27
Diabetes	43
Dementia	22
Cancer	16

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. William S. Ritter, MD treated as a cardiologist in Merriam, KS during 2018 were hospital care, inpatient care, cardiac procedures and ultrasound (sonogram).

Volume of procedures performed by Dr. William S. Ritter, MD for Medicare patients.

cardiac procedures	495
cardioversion	17
doctor visit	74
hospital care	577
inpatient care	577
minimally invasive procedures	15
nuclear scan	91
stress testing	200
ultrasound (sonogram)	307

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. William S. Ritter, MD.

**Gender**
Male	460
Female	562

**Ethnicity**
Non-Hispanic White	921
Black	52
Hispanic	28
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	348
From 75 to 84	343
85 and over	225
Less than 65	106

Conditions of Medicare patients treated by Dr. William S. Ritter, MD in 2018

Hypertension	75
High Cholesterol	75
Stroke	11
Ischemic Heart Disease	59
Depression	34
Chronic Kidney Disease	54
Asthma	10
Osteoperosis	11
Atrial Fibrilation	38
Heart Failure	50
Chronic Obstructive Pulmonary Disease	29
Diabetes	41
Dementia	22
Cancer	15

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. William S. Ritter, MD treated as a cardiologist in Merriam, KS during 2019 were cardiac procedures, hospital care, inpatient care and ultrasound (sonogram).

Volume of procedures performed by Dr. William S. Ritter, MD for Medicare patients.

cardiac procedures	563
cardioversion	18
doctor visit	64
hospital care	491
inpatient care	491
minimally invasive procedures	21
nuclear scan	97
stress testing	221
ultrasound (sonogram)	354

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. William S. Ritter, MD.

**Gender**
Male	432
Female	434

**Ethnicity**
Non-Hispanic White	774
Black	39
Hispanic	30
Asian	0
Other	12
Native American	0

**Age**
From 65 to 74	322
From 75 to 84	265
85 and over	197
Less than 65	82

Conditions of Medicare patients treated by Dr. William S. Ritter, MD in 2019

Hypertension	75
High Cholesterol	75
Stroke	13
Ischemic Heart Disease	63
Depression	36
Chronic Kidney Disease	59
Asthma	8
Osteoperosis	11
Atrial Fibrilation	38
Heart Failure	52
Chronic Obstructive Pulmonary Disease	26
Diabetes	41
Dementia	26
Cancer	17

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. William S. Ritter, MD treated as a cardiologist in Merriam, KS during 2020 were cardiac procedures, hospital care, inpatient care and ultrasound (sonogram).

Volume of procedures performed by Dr. William S. Ritter, MD for Medicare patients.

cardiac procedures	297
hospital care	268
inpatient care	268
nuclear scan	40
stress testing	107
ultrasound (sonogram)	202

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. William S. Ritter, MD.

**Gender**
Male	229
Female	260

**Ethnicity**
Non-Hispanic White	444
Black	23
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	177
From 75 to 84	183
85 and over	89
Less than 65	40

Conditions of Medicare patients treated by Dr. William S. Ritter, MD in 2020

Hypertension	75
High Cholesterol	75
Stroke	13
Ischemic Heart Disease	64
Depression	38
Chronic Kidney Disease	61
Asthma	10
Osteoperosis	11
Atrial Fibrilation	41
Heart Failure	55
Chronic Obstructive Pulmonary Disease	31
Diabetes	43
Dementia	25
Cancer	17

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. William S. Ritter, MD treated as a cardiologist in Merriam, KS during 2021 were ultrasound (sonogram), cardiac procedures, hospital care and inpatient care.

Volume of procedures performed by Dr. William S. Ritter, MD for Medicare patients.

cardiac procedures	30
doctor visit	266
hospital care	16
inpatient care	16
ultrasound (sonogram)	30

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. William S. Ritter, MD.

**Gender**
Male	113
Female	128

**Ethnicity**
Non-Hispanic White	226
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	119
From 75 to 84	71
85 and over	40
Less than 65	11

Conditions of Medicare patients treated by Dr. William S. Ritter, MD in 2021

Hypertension	75
High Cholesterol	71
Stroke	7
Ischemic Heart Disease	50
Depression	27
Chronic Kidney Disease	41
Asthma	10
Osteoperosis	6
Atrial Fibrilation	19
Heart Failure	29
Chronic Obstructive Pulmonary Disease	14
Diabetes	32
Dementia	11
Cancer	13

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. William S. Ritter, MD treated as a cardiologist in Merriam, KS during 2022 were cardiac procedures, ultrasound (sonogram), stress testing and hospital care.

Volume of procedures performed by Dr. William S. Ritter, MD for Medicare patients.

cardiac procedures	363
doctor visit	227
hospital care	66
inpatient care	66
nuclear scan	51
stress testing	158
ultrasound (sonogram)	230

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. William S. Ritter, MD.

**Gender**
Male	187
Female	208

**Ethnicity**
Non-Hispanic White	361
Black	0
Hispanic	0
Asian	0
Other	13
Native American	0

**Age**
From 65 to 74	183
From 75 to 84	131
85 and over	60
Less than 65	21

Conditions of Medicare patients treated by Dr. William S. Ritter, MD in 2022

Hypertension	75
High Cholesterol	75
Stroke	11
Ischemic Heart Disease	41
Depression	27
Chronic Kidney Disease	29
Asthma	13
Osteoperosis	13
Atrial Fibrilation	31
Heart Failure	32
Chronic Obstructive Pulmonary Disease	21
Diabetes	32
Dementia	9
Cancer	17

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. William S. Ritter, MD for Medicare patients.

The highest averages for the top procedures that Dr. William S. Ritter, MD treated as a cardiologist in Merriam, KS were lab tests, cardiac procedures, hospital care and inpatient care.

abdominal imaging	12
ambulatory monitoring	34
cardiac procedures	526
cardioversion	19
catheterization	28
diagnostic procedures	28
doctor visit	426
hospital care	454
inpatient care	451
lab tests	956
minimally invasive procedures	32
nuclear scan	108
outpatient care	18
preventive care	17
stress testing	239
ultrasound (sonogram)	315
vaccines	17
vascular procedures	34

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. William S. Ritter, MD.

**Gender**
Male	463
Female	554

**Ethnicity**
Black / African American	52
Asian / Pacific Islander	1
Non-Hispanic White	907
Hispanic	30
Native American / Alaskan Native	0
Other	9

**Age**
75 to 84	320
85 and over	248
Less than 65	109
65 to 74	339

Average of Total of Conditions of Medicare patients treated by Dr. William S. Ritter, MD From 2012 - 2022

The highest averages of the most common conditions of Medicare patients that Dr. William S. Ritter, MD treated were hypertension, high cholesterol, ischemic heart disease and chronic kidney disease.

Hypertension	68
High Cholesterol	65
Stroke	10
Ischemic Heart Disease	52
Depression	28
Chronic Kidney Disease	41
Asthma	11
Osteoporosis	9
Heart Failure	40
Chronic Obstructive Pulmonary Disease	23
Diabetes	35
Atrial Fibrillation	31
Cancer	13
Dementia	17

Education & Training

Dr. William S. Ritter, MD graduated from Thomas Jefferson University, Jefferson Medical College in 1971. He completed residency at Grady Memorial Hospital. He is certified by the American Board of Internal Medicine and has a state license in Missouri.

Medical School: Thomas Jefferson University, Jefferson Medical College (1971)

Residency: Grady Memorial Hospital

Board Certification: American Board of Internal Medicine

Licensed In: Missouri

Affiliations & Hospitals

Dr. William S. Ritter, MD is associated with these hospitals and organizations:

SHAWNEE MISSION MEDICAL CENTER INC

Ratings & Reviews

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General Payments

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

**Payments by Company**
iRhythm Technologies, Inc.	$190 ZIO XT Patch $190
Amgen Inc.	$161 Repatha $161
Edwards Lifesciences Corporation	$158 EV1000 Clinical Platform $146	Edwards SAPIEN 3 Transcatheter Heart Valve $12
Janssen Pharmaceuticals, Inc	$147 XARELTO $147
Boston Scientific Corporation	$139 WATCHMAN Access System $139
Other	$876 MULTAQ $103	LifeVest $97	VERQUVO $79	VYNDAQEL $60	CRM $55	Other $483

**Types of Payments**
Food and Beverage	$1,658
Entertainment	$12

Biography

Dr. William Ritter's area of specialization is adult cardiology. According to Doctor.com, he is currently accepting new patients at his office in Overland Park, KS. He obtained his medical school training at Thomas Jefferson University, Jefferson Medical College and performed his residency at Cleveland Metropolitan General Hospital and Grady Memorial Hospital.

Select Year:

Dr. William S. Ritter, MD

Office Locations

Noteworthy Medicare Patient Procedures Performed by Dr. William S. Ritter, MD in 2023

By Affordability:

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 S. Ritter, MD in 2013

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

2014 Medicare Patient Data

Conditions of Medicare patients treated by Dr. William S. Ritter, MD in 2014

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

2015 Medicare Patient Data

Conditions of Medicare patients treated by Dr. William S. Ritter, MD in 2015

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

2016 Medicare Patient Data

Conditions of Medicare patients treated by Dr. William S. Ritter, MD in 2016

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

2017 Medicare Patient Data

Conditions of Medicare patients treated by Dr. William S. Ritter, MD in 2017

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

2018 Medicare Patient Data

Conditions of Medicare patients treated by Dr. William S. Ritter, MD in 2018

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

2019 Medicare Patient Data

Conditions of Medicare patients treated by Dr. William S. Ritter, MD in 2019

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

2020 Medicare Patient Data

Conditions of Medicare patients treated by Dr. William S. Ritter, MD in 2020

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

2021 Medicare Patient Data

Conditions of Medicare patients treated by Dr. William S. Ritter, MD in 2021

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

2022 Medicare Patient Data

Conditions of Medicare patients treated by Dr. William S. Ritter, MD 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. William S. Ritter, MD From 2012 - 2022

Education & Training

Affiliations & Hospitals

Ratings & Reviews

General Payments

Biography

Other Providers in Merriam, KS