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Dr. John Stephen Wisniewski, MD

Accepting New Patients

(Dr. John S. Wisniewski, MD)

(No ratings)

Specializes in: Internal Medicine (Adult Medicine)

SUNY Upstate Medical University

85 Seymour Street Suite 900
Hartford, CT 06106

(860) 241-0700

Dr. John Stephen Wisniewski, MD is an internist in Farmington, CT specializing in internal medicine (adult medicine). He graduated from SUNY Upstate Medical University. Dr. John Stephen Wisniewski, MD is affiliated with Hartford Hospital and Hartford Healthcare.

Office Locations

11 South Road Suite 240
Farmington, CT 06032

open_in_new

Hartford Healthcare

1260 Silas Deane Highway Suite 106
Wethersfield, CT 06109

(860) 522-4163

open_in_new

Hartford Healthcare

85 Seymour Street Suite 900
Hartford, CT 06106

(860) 241-0700

(860) 525-7881

open_in_new

Noteworthy Medicare Patient Procedures Performed by Dr. John Stephen Wisniewski, MD in 2023

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

Top 25%

By Volume:

flu shot

In 2012, Dr. John Stephen Wisniewski, MD performed more flu shot procedures for Medicare patients than 75% of providers in related specialties within Connecticut.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. John Stephen Wisniewski, MD treated as an internist in Farmington, CT during 2012 were lab tests, preventive care, thyroid function tests and diabetes management.

Volume of procedures performed by Dr. John Stephen Wisniewski, MD for Medicare patients.

diabetes management	254
doctor visit	1426
lab tests	3432
preventive care	1215
thyroid function tests	258
vaccines	124

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. John Stephen Wisniewski, MD treated as an internist in Farmington, CT during 2013 were lab tests, preventive care, thyroid function tests and diabetes management.

Volume of procedures performed by Dr. John Stephen Wisniewski, MD for Medicare patients.

diabetes management	240
doctor visit	1387
lab tests	3678
preventive care	1174
thyroid function tests	301
vaccines	122

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. John Stephen Wisniewski, MD.

**Gender**
Male	275
Female	265

**Ethnicity**
Non-Hispanic White	449
Black	39
Hispanic	40
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	235
From 75 to 84	168
85 and over	95
Less than 65	42

Conditions of Medicare patients treated by Dr. John Stephen Wisniewski, MD in 2013

Hypertension	72
High Cholesterol	75
Stroke	4
Ischemic Heart Disease	29
Depression	14
Chronic Kidney Disease	19
Asthma	10
Osteoperosis	6
Atrial Fibrilation	15
Heart Failure	12
Chronic Obstructive Pulmonary Disease	7
Diabetes	30
Dementia	7
Cancer	15

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. John Stephen Wisniewski, MD treated as an internist in Farmington, CT during 2014 were lab tests, preventive care, thyroid function tests and diabetes management.

Volume of procedures performed by Dr. John Stephen Wisniewski, MD for Medicare patients.

diabetes management	204
doctor visit	1417
lab tests	3415
preventive care	1020
thyroid function tests	222
vaccines	93

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. John Stephen Wisniewski, MD.

**Gender**
Male	290
Female	283

**Ethnicity**
Non-Hispanic White	467
Black	46
Hispanic	42
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	253
From 75 to 84	184
85 and over	92
Less than 65	44

Conditions of Medicare patients treated by Dr. John Stephen Wisniewski, MD in 2014

Hypertension	72
High Cholesterol	74
Stroke	3
Ischemic Heart Disease	28
Depression	15
Chronic Kidney Disease	20
Asthma	10
Osteoperosis	6
Atrial Fibrilation	16
Heart Failure	13
Chronic Obstructive Pulmonary Disease	8
Diabetes	30
Dementia	8
Cancer	14

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. John Stephen Wisniewski, MD treated as an internist in Farmington, CT during 2015 were lab tests, preventive care, vaccines and thyroid function tests.

Volume of procedures performed by Dr. John Stephen Wisniewski, MD for Medicare patients.

diabetes management	215
doctor visit	1339
lab tests	3253
preventive care	1242
thyroid function tests	236
vaccines	342

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. John Stephen Wisniewski, MD.

**Gender**
Male	586
Female	564

**Ethnicity**
Non-Hispanic White	930
Black	94
Hispanic	82
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	496
From 75 to 84	338
85 and over	222
Less than 65	94

Conditions of Medicare patients treated by Dr. John Stephen Wisniewski, MD in 2015

Hypertension	72
High Cholesterol	70
Stroke	4
Ischemic Heart Disease	28
Depression	15
Chronic Kidney Disease	21
Asthma	10
Osteoperosis	5
Atrial Fibrilation	15
Heart Failure	16
Chronic Obstructive Pulmonary Disease	10
Diabetes	29
Dementia	8
Cancer	14

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. John Stephen Wisniewski, MD treated as an internist in Farmington, CT during 2016 were lab tests, preventive care, vaccines and thyroid function tests.

Volume of procedures performed by Dr. John Stephen Wisniewski, MD for Medicare patients.

diabetes management	152
doctor visit	1417
lab tests	2029
preventive care	841
thyroid function tests	177
vaccines	222

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. John Stephen Wisniewski, MD.

**Gender**
Male	369
Female	343

**Ethnicity**
Non-Hispanic White	560
Black	56
Hispanic	63
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	298
From 75 to 84	228
85 and over	116
Less than 65	70

Conditions of Medicare patients treated by Dr. John Stephen Wisniewski, MD in 2016

Hypertension	75
High Cholesterol	62
Stroke	3
Ischemic Heart Disease	31
Depression	15
Chronic Kidney Disease	29
Asthma	15
Osteoperosis	7
Atrial Fibrilation	15
Heart Failure	19
Chronic Obstructive Pulmonary Disease	10
Diabetes	34
Dementia	8
Cancer	13

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. John Stephen Wisniewski, MD treated as an internist in Farmington, CT during 2017 were preventive care, vaccines and cardiac procedures.

Volume of procedures performed by Dr. John Stephen Wisniewski, MD for Medicare patients.

cardiac procedures	15
doctor visit	1390
preventive care	235
vaccines	195

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. John Stephen Wisniewski, MD.

**Gender**
Male	363
Female	308

**Ethnicity**
Non-Hispanic White	524
Black	55
Hispanic	54
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	275
From 75 to 84	214
85 and over	106
Less than 65	76

Conditions of Medicare patients treated by Dr. John Stephen Wisniewski, MD in 2017

Hypertension	75
High Cholesterol	61
Stroke	5
Ischemic Heart Disease	32
Depression	17
Chronic Kidney Disease	34
Asthma	8
Osteoperosis	7
Atrial Fibrilation	17
Heart Failure	19
Chronic Obstructive Pulmonary Disease	11
Diabetes	31
Dementia	8
Cancer	14

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. John Stephen Wisniewski, MD treated as an internist in Farmington, CT during 2018 were preventive care, vaccines, cardiac procedures and blood draw.

Volume of procedures performed by Dr. John Stephen Wisniewski, MD for Medicare patients.

blood draw	13
cardiac procedures	15
doctor visit	1070
preventive care	169
vaccines	135

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. John Stephen Wisniewski, MD.

**Gender**
Male	290
Female	248

**Ethnicity**
Non-Hispanic White	422
Black	40
Hispanic	46
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	201
From 75 to 84	185
85 and over	84
Less than 65	68

Conditions of Medicare patients treated by Dr. John Stephen Wisniewski, MD in 2018

Hypertension	75
High Cholesterol	69
Stroke	4
Ischemic Heart Disease	30
Depression	20
Chronic Kidney Disease	36
Asthma	8
Osteoperosis	7
Atrial Fibrilation	14
Heart Failure	18
Chronic Obstructive Pulmonary Disease	11
Diabetes	33
Dementia	12
Cancer	16

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. John Stephen Wisniewski, MD treated as an internist in Farmington, CT during 2019 were preventive care, vaccines and chronic care.

Volume of procedures performed by Dr. John Stephen Wisniewski, MD for Medicare patients.

chronic care	97
doctor visit	959
preventive care	169
vaccines	152

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. John Stephen Wisniewski, MD.

**Gender**
Male	292
Female	258

**Ethnicity**
Non-Hispanic White	427
Black	38
Hispanic	49
Asian	0
Other	25
Native American	0

**Age**
From 65 to 74	194
From 75 to 84	205
85 and over	81
Less than 65	70

Conditions of Medicare patients treated by Dr. John Stephen Wisniewski, MD in 2019

Hypertension	75
High Cholesterol	69
Stroke	7
Ischemic Heart Disease	31
Depression	20
Chronic Kidney Disease	40
Asthma	8
Osteoperosis	8
Atrial Fibrilation	16
Heart Failure	19
Chronic Obstructive Pulmonary Disease	11
Diabetes	31
Dementia	10
Cancer	17

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. John Stephen Wisniewski, MD treated as an internist in Farmington, CT during 2020 were chronic care, preventive care and vaccines.

Volume of procedures performed by Dr. John Stephen Wisniewski, MD for Medicare patients.

chronic care	121
doctor visit	793
preventive care	109
vaccines	92

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. John Stephen Wisniewski, MD.

**Gender**
Male	270
Female	216

**Ethnicity**
Non-Hispanic White	392
Black	30
Hispanic	31
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	187
From 75 to 84	177
85 and over	80
Less than 65	42

Conditions of Medicare patients treated by Dr. John Stephen Wisniewski, MD in 2020

Hypertension	71
High Cholesterol	69
Stroke	5
Ischemic Heart Disease	30
Depression	17
Chronic Kidney Disease	34
Asthma	5
Osteoperosis	9
Atrial Fibrilation	13
Heart Failure	17
Chronic Obstructive Pulmonary Disease	11
Diabetes	32
Dementia	10
Cancer	16

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. John Stephen Wisniewski, MD treated as an internist in Farmington, CT during 2021 were preventive care, vaccines and chronic care.

Volume of procedures performed by Dr. John Stephen Wisniewski, MD for Medicare patients.

chronic care	29
doctor visit	826
preventive care	85
vaccines	85

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. John Stephen Wisniewski, MD.

**Gender**
Male	234
Female	213

**Ethnicity**
Non-Hispanic White	366
Black	0
Hispanic	27
Asian	0
Other	28
Native American	0

**Age**
From 65 to 74	160
From 75 to 84	170
85 and over	87
Less than 65	30

Conditions of Medicare patients treated by Dr. John Stephen Wisniewski, MD in 2021

Hypertension	72
High Cholesterol	74
Stroke	5
Ischemic Heart Disease	28
Depression	15
Chronic Kidney Disease	30
Asthma	5
Osteoperosis	11
Atrial Fibrilation	12
Heart Failure	14
Chronic Obstructive Pulmonary Disease	10
Diabetes	29
Dementia	11
Cancer	17

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. John Stephen Wisniewski, MD treated as an internist in Farmington, CT during 2022 were preventive care and vaccines.

Volume of procedures performed by Dr. John Stephen Wisniewski, MD for Medicare patients.

doctor visit	835
preventive care	62
vaccines	47

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. John Stephen Wisniewski, MD.

**Gender**
Male	227
Female	203

**Ethnicity**
Non-Hispanic White	359
Black	0
Hispanic	24
Asian	0
Other	27
Native American	0

**Age**
From 65 to 74	155
From 75 to 84	169
85 and over	81
Less than 65	25

Conditions of Medicare patients treated by Dr. John Stephen Wisniewski, MD in 2022

Hypertension	75
High Cholesterol	75
Stroke	6
Ischemic Heart Disease	23
Depression	16
Chronic Kidney Disease	23
Asthma	9
Osteoperosis	15
Atrial Fibrilation	21
Heart Failure	13
Chronic Obstructive Pulmonary Disease	11
Diabetes	27
Dementia	7
Cancer	22

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. John Stephen Wisniewski, MD for Medicare patients.

The highest averages for the top procedures that Dr. John Stephen Wisniewski, MD treated as an internist in Farmington, CT were lab tests, preventive care, thyroid function tests and diabetes management.

blood draw	13
cardiac procedures	15
chronic care	82
diabetes management	213
doctor visit	1169
lab tests	3161
preventive care	574
thyroid function tests	238
vaccines	146

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. John Stephen Wisniewski, MD.

**Gender**
Female	263
Male	290

**Ethnicity**
Black / African American	36
Asian / Pacific Islander	0
Non-Hispanic White	445
Native American / Alaskan Native	0
Hispanic	41
Other	7

**Age**
85 and over	94
75 to 84	185
Less than 65	51
65 to 74	223

Average of Total of Conditions of Medicare patients treated by Dr. John Stephen Wisniewski, MD From 2012 - 2022

The highest averages of the most common conditions of Medicare patients that Dr. John Stephen Wisniewski, MD treated were hypertension, high cholesterol, diabetes and ischemic heart disease.

Hypertension	66
High Cholesterol	63
Stroke	4
Ischemic Heart Disease	26
Depression	14
Chronic Kidney Disease	26
Asthma	8
Osteoporosis	7
Heart Failure	14
Chronic Obstructive Pulmonary Disease	9
Diabetes	27
Atrial Fibrillation	14
Dementia	8
Cancer	14

Education & Training

Dr. John Stephen Wisniewski, MD graduated from SUNY Upstate Medical University. He completed residency at North Shore University Hospital. He has a state license in Connecticut.

Medical School: SUNY Upstate Medical University

Residency: North Shore University Hospital

Licensed In: Connecticut

Affiliations & Hospitals

Dr. John Stephen Wisniewski, MD is associated with these hospitals and organizations:

Hartford Hospital

Hartford Healthcare

Insurance Information

Please note: Insurance information may change at any time, and the provider may accept your insurance plan even if it is not listed below. Please contact the provider's office to confirm that your insurance is accepted.

Dr. John Stephen Wisniewski, MD appears to accept the following insurance providers: ConnectiCare, Cigna, Aetna, Health Net, Anthem, United Healthcare, Oxford Health Plans and Medicare.

Insurance Accepted by Provider includes:

According to our sources, Dr. John Stephen Wisniewski, MD accepts the following insurance providers:

ConnectiCare

Cigna

Aetna

Health Net

Anthem

United Healthcare

Oxford Health Plans

Medicare

Ratings & Reviews

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General Payments

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

**Payments by Company**
Novo Nordisk Inc	$2,817 Victoza $1,159	RYBELSUS $601	Ozempic $465	Tresiba $366	Saxenda $60	Other $165
Dexcom, Inc.	$623 DEXCOM G6 TRANSMITTER $461	Dexcom CGM $163
AbbVie Inc.	$531 UBRELVY $220	VRAYLAR $191	QULIPTA $61	LINZESS $36	VIIBRYD $22
Takeda Pharmaceuticals America, Inc.	$374 Contrave $236	Uloric $50	Colcrys $21	AMITIZA $19	Kazano $19	Other $30
GlaxoSmithKline, LLC.	$273 TRELEGY ELLIPTA $168	FLOVENT $69	AREXVY $36
Other	$1,187 JANUMET XR $126	ELIQUIS $71	XARELTO $71	FARXIGA $65	TOUJEO $64	Other $789

**Types of Payments**
Food and Beverage	$5,762
Education	$42

Biography

Dr. John Wisniewski is affiliated with Hartford Hospital. He attended SUNY Upstate Medical University for medical school and subsequently trained at North Shore University Hospital for residency. Dr. Wisniewski usually is in-network for Anthem, Health Net, and ConnectiCare, as well as other insurance carriers. According to Hartford Healthcare, new patients are welcome to contact his office in Hartford, CT.

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Dr. John Stephen Wisniewski, MD

Office Locations

Noteworthy Medicare Patient Procedures Performed by Dr. John Stephen Wisniewski, MD in 2023

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. John Stephen Wisniewski, MD in 2013

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

2014 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John Stephen Wisniewski, MD in 2014

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

2015 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John Stephen Wisniewski, MD in 2015

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

2016 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John Stephen Wisniewski, MD in 2016

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

2017 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John Stephen Wisniewski, MD in 2017

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

2018 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John Stephen Wisniewski, MD in 2018

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

2019 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John Stephen Wisniewski, MD in 2019

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

2020 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John Stephen Wisniewski, MD in 2020

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

2021 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John Stephen Wisniewski, MD in 2021

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

2022 Medicare Patient Data

Conditions of Medicare patients treated by Dr. John Stephen Wisniewski, 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. John Stephen Wisniewski, MD From 2012 - 2022

Education & Training

Affiliations & Hospitals

Insurance Information

Ratings & Reviews

General Payments

Biography

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