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Home > NY Providers > Family Physicians & Family Medicine Specialists

Dr. Kristen A. O'Brien, MD

(Kristen Anne O'Brien, MD)

(No ratings)

Specializes in: Physician and Family Medicine

3 Technology Drive Suite 100
East Setauket, NY 11733

(631) 331-1000

Dr. Kristen A. O'Brien, MD is a physician provider in East Setauket, NY specializing in physician and family medicine. Dr. Kristen A. O'Brien, MD is affiliated with Mather Primary Care at East Setauket.

Office Locations

3 Technology Drive Suite 100
East Setauket, NY 11733

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Noteworthy Medicare Patient Procedures Performed by Dr. Kristen A. O'Brien, MD in 2024

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

Top 25%

By Volume:

flu shot

preventive care

Welcome to Medicare visit

In 2012, Dr. Kristen A. O'Brien, MD performed more flu shot, preventive care, and Welcome to Medicare visit (initial preventive physical exam) procedures for Medicare patients than 75% of providers in related specialties within New York.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Kristen A. O'Brien, MD treated as a physician provider in East Setauket, NY during 2012 were lab tests, hospital care, inpatient care and preventive care.

Volume of procedures performed by Dr. Kristen A. O'Brien, MD for Medicare patients.

blood draw	146
breathing treatment	16
diabetes management	15
doctor visit	1257
hospital care	288
inpatient care	288
lab tests	465
preventive care	183
vaccines	154

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Kristen A. O'Brien, MD treated as a physician provider in East Setauket, NY during 2013 were lab tests, preventive care, vaccines and blood draw.

Volume of procedures performed by Dr. Kristen A. O'Brien, MD for Medicare patients.

blood draw	80
doctor visit	980
lab tests	260
preventive care	125
vaccines	125

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Kristen A. O'Brien, MD.

**Gender**
Male	105
Female	294

**Ethnicity**
Non-Hispanic White	382
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	174
From 75 to 84	140
85 and over	55
Less than 65	30

Conditions of Medicare patients treated by Dr. Kristen A. O'Brien, MD in 2013

Hypertension	64
High Cholesterol	56
Stroke	7
Ischemic Heart Disease	30
Depression	21
Chronic Kidney Disease	14
Asthma	4
Osteoperosis	7
Atrial Fibrilation	17
Heart Failure	11
Chronic Obstructive Pulmonary Disease	12
Diabetes	24
Dementia	6
Cancer	9

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Kristen A. O'Brien, MD treated as a physician provider in East Setauket, NY during 2014 were lab tests, preventive care, vaccines and blood draw.

Volume of procedures performed by Dr. Kristen A. O'Brien, MD for Medicare patients.

blood draw	90
doctor visit	890
lab tests	256
preventive care	101
vaccines	101

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Kristen A. O'Brien, MD.

**Gender**
Male	96
Female	280

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

**Age**
From 65 to 74	166
From 75 to 84	134
85 and over	42
Less than 65	34

Conditions of Medicare patients treated by Dr. Kristen A. O'Brien, MD in 2014

Hypertension	62
High Cholesterol	56
Stroke	5
Ischemic Heart Disease	31
Depression	22
Chronic Kidney Disease	12
Asthma	6
Osteoperosis	11
Atrial Fibrilation	15
Heart Failure	11
Chronic Obstructive Pulmonary Disease	13
Diabetes	20
Dementia	5
Cancer	10

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Kristen A. O'Brien, MD treated as a physician provider in East Setauket, NY during 2015 were preventive care, vaccines, lab tests and blood draw.

Volume of procedures performed by Dr. Kristen A. O'Brien, MD for Medicare patients.

blood draw	107
doctor visit	907
lab tests	182
preventive care	212
vaccines	212

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Kristen A. O'Brien, MD.

**Gender**
Male	180
Female	516

**Ethnicity**
Non-Hispanic White	656
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	340
From 75 to 84	238
85 and over	74
Less than 65	44

Conditions of Medicare patients treated by Dr. Kristen A. O'Brien, MD in 2015

Hypertension	64
High Cholesterol	57
Stroke	4
Ischemic Heart Disease	32
Depression	20
Chronic Kidney Disease	15
Asthma	10
Osteoperosis	11
Atrial Fibrilation	17
Heart Failure	14
Chronic Obstructive Pulmonary Disease	11
Diabetes	22
Dementia	4
Cancer	11

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Kristen A. O'Brien, MD treated as a physician provider in East Setauket, NY during 2016 were blood draw, preventive care, vaccines and lab tests.

Volume of procedures performed by Dr. Kristen A. O'Brien, MD for Medicare patients.

blood draw	299
doctor visit	936
lab tests	150
preventive care	209
vaccines	209

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Kristen A. O'Brien, MD.

**Gender**
Male	91
Female	250

**Ethnicity**
Non-Hispanic White	315
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	177
From 75 to 84	105
85 and over	29
Less than 65	30

Conditions of Medicare patients treated by Dr. Kristen A. O'Brien, MD in 2016

Hypertension	60
High Cholesterol	55
Stroke	0
Ischemic Heart Disease	31
Depression	15
Chronic Kidney Disease	15
Asthma	13
Osteoperosis	11
Atrial Fibrilation	11
Heart Failure	12
Chronic Obstructive Pulmonary Disease	11
Diabetes	26
Dementia	6
Cancer	11

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Kristen A. O'Brien, MD treated as a physician provider in East Setauket, NY during 2017 were blood draw, preventive care, vaccines and lab tests.

Volume of procedures performed by Dr. Kristen A. O'Brien, MD for Medicare patients.

blood draw	362
doctor visit	832
lab tests	72
preventive care	223
vaccines	209

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Kristen A. O'Brien, MD.

**Gender**
Male	97
Female	257

**Ethnicity**
Non-Hispanic White	323
Black	0
Hispanic	0
Asian	0
Other	13
Native American	0

**Age**
From 65 to 74	177
From 75 to 84	109
85 and over	31
Less than 65	37

Conditions of Medicare patients treated by Dr. Kristen A. O'Brien, MD in 2017

Hypertension	63
High Cholesterol	58
Stroke	4
Ischemic Heart Disease	31
Depression	19
Chronic Kidney Disease	16
Asthma	6
Osteoperosis	10
Atrial Fibrilation	10
Heart Failure	10
Chronic Obstructive Pulmonary Disease	12
Diabetes	28
Dementia	7
Cancer	11

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Kristen A. O'Brien, MD treated as a physician provider in East Setauket, NY during 2018 were blood draw, preventive care, vaccines and lab tests.

Volume of procedures performed by Dr. Kristen A. O'Brien, MD for Medicare patients.

blood draw	468
doctor visit	848
lab tests	128
preventive care	247
vaccines	204

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Kristen A. O'Brien, MD.

**Gender**
Male	97
Female	282

**Ethnicity**
Non-Hispanic White	348
Black	0
Hispanic	0
Asian	0
Other	16
Native American	0

**Age**
From 65 to 74	196
From 75 to 84	111
85 and over	36
Less than 65	36

Conditions of Medicare patients treated by Dr. Kristen A. O'Brien, MD in 2018

Hypertension	60
High Cholesterol	59
Stroke	3
Ischemic Heart Disease	30
Depression	20
Chronic Kidney Disease	20
Asthma	6
Osteoperosis	11
Atrial Fibrilation	12
Heart Failure	11
Chronic Obstructive Pulmonary Disease	10
Diabetes	23
Dementia	7
Cancer	11

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Kristen A. O'Brien, MD treated as a physician provider in East Setauket, NY during 2019 were blood draw, preventive care, vaccines and lab tests.

Volume of procedures performed by Dr. Kristen A. O'Brien, MD for Medicare patients.

blood draw	410
doctor visit	903
lab tests	151
preventive care	250
vaccines	213

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Kristen A. O'Brien, MD.

**Gender**
Male	111
Female	305

**Ethnicity**
Non-Hispanic White	380
Black	0
Hispanic	0
Asian	0
Other	17
Native American	0

**Age**
From 65 to 74	213
From 75 to 84	121
85 and over	33
Less than 65	49

Conditions of Medicare patients treated by Dr. Kristen A. O'Brien, MD in 2019

Hypertension	62
High Cholesterol	62
Stroke	4
Ischemic Heart Disease	33
Depression	18
Chronic Kidney Disease	19
Asthma	8
Osteoperosis	10
Atrial Fibrilation	12
Heart Failure	13
Chronic Obstructive Pulmonary Disease	8
Diabetes	22
Dementia	8
Cancer	9

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Kristen A. O'Brien, MD treated as a physician provider in East Setauket, NY during 2020 were preventive care, blood draw, vaccines and lab tests.

Volume of procedures performed by Dr. Kristen A. O'Brien, MD for Medicare patients.

blood draw	224
doctor visit	634
lab tests	28
preventive care	228
vaccines	207

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Kristen A. O'Brien, MD.

**Gender**
Male	100
Female	305

**Ethnicity**
Non-Hispanic White	374
Black	0
Hispanic	0
Asian	0
Other	14
Native American	0

**Age**
From 65 to 74	222
From 75 to 84	116
85 and over	33
Less than 65	34

Conditions of Medicare patients treated by Dr. Kristen A. O'Brien, MD in 2020

Hypertension	57
High Cholesterol	64
Stroke	0
Ischemic Heart Disease	31
Depression	15
Chronic Kidney Disease	20
Asthma	8
Osteoperosis	13
Atrial Fibrilation	12
Heart Failure	12
Chronic Obstructive Pulmonary Disease	8
Diabetes	23
Dementia	7
Cancer	10

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Kristen A. O'Brien, MD treated as a physician provider in East Setauket, NY during 2021 were blood draw, preventive care, vaccines and lab tests.

Volume of procedures performed by Dr. Kristen A. O'Brien, MD for Medicare patients.

blood draw	175
doctor visit	625
lab tests	46
preventive care	153
vaccines	131

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Kristen A. O'Brien, MD.

**Gender**
Male	92
Female	300

**Ethnicity**
Non-Hispanic White	358
Black	0
Hispanic	11
Asian	0
Other	12
Native American	0

**Age**
From 65 to 74	205
From 75 to 84	121
85 and over	34
Less than 65	32

Conditions of Medicare patients treated by Dr. Kristen A. O'Brien, MD in 2021

Hypertension	59
High Cholesterol	65
Stroke	3
Ischemic Heart Disease	33
Depression	19
Chronic Kidney Disease	18
Asthma	8
Osteoperosis	15
Atrial Fibrilation	13
Heart Failure	12
Chronic Obstructive Pulmonary Disease	9
Diabetes	21
Dementia	7
Cancer	11

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Kristen A. O'Brien, MD treated as a physician provider in East Setauket, NY during 2022 were preventive care, vaccines, blood draw and lab tests.

Volume of procedures performed by Dr. Kristen A. O'Brien, MD for Medicare patients.

blood draw	39
doctor visit	661
lab tests	37
preventive care	139
vaccines	124

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Kristen A. O'Brien, MD.

**Gender**
Male	94
Female	293

**Ethnicity**
Non-Hispanic White	353
Black	0
Hispanic	0
Asian	0
Other	14
Native American	0

**Age**
From 65 to 74	202
From 75 to 84	129
85 and over	26
Less than 65	30

Conditions of Medicare patients treated by Dr. Kristen A. O'Brien, MD in 2022

Hypertension	72
High Cholesterol	75
Stroke	5
Ischemic Heart Disease	31
Depression	16
Chronic Kidney Disease	14
Asthma	9
Osteoperosis	21
Atrial Fibrilation	18
Heart Failure	10
Chronic Obstructive Pulmonary Disease	9
Diabetes	21
Dementia	5
Cancer	16

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

The top procedures that Dr. Kristen A. O'Brien, MD treated as a physician provider in East Setauket, NY during 2023 were preventive care, vaccines, blood draw and lab tests.

Volume of procedures performed by Dr. Kristen A. O'Brien, MD for Medicare patients.

blood draw	55
doctor visit	691
lab tests	27
preventive care	107
vaccines	90

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. Kristen A. O'Brien, MD.

**Gender**
Male	100
Female	303

**Ethnicity**
Non-Hispanic White	373
Black	0
Hispanic	0
Asian	0
Other	15
Native American	0

**Age**
From 65 to 74	206
From 75 to 84	142
85 and over	31
Less than 65	24

Conditions of Medicare patients treated by Dr. Kristen A. O'Brien, MD in 2023

Hypertension	71
High Cholesterol	75
Stroke	6
Ischemic Heart Disease	34
Depression	16
Chronic Kidney Disease	15
Asthma	9
Osteoperosis	23
Atrial Fibrilation	17
Heart Failure	9
Chronic Obstructive Pulmonary Disease	9
Diabetes	21
Dementia	6
Cancer	16

Medicare Procedure and Patient Information

2024 Medicare Procedure Volume

The top procedures that Dr. Kristen A. O'Brien, MD treated as a physician provider in East Setauket, NY during 2024 were preventive care, vaccines and blood draw.

Volume of procedures performed by Dr. Kristen A. O'Brien, MD for Medicare patients.

blood draw	21
doctor visit	577
preventive care	98
vaccines	77

2024 Medicare Patient Data

Information about Medicare patients treated by Dr. Kristen A. O'Brien, MD.

**Gender**
Male	95
Female	299

**Ethnicity**
Non-Hispanic White	368
Black	0
Hispanic	0
Asian	0
Other	13
Native American	0

**Age**
From 65 to 74	202
From 75 to 84	133
85 and over	33
Less than 65	26

Conditions of Medicare patients treated by Dr. Kristen A. O'Brien, MD in 2024

Hypertension	70
High Cholesterol	75
Stroke	7
Ischemic Heart Disease	36
Depression	17
Chronic Kidney Disease	14
Asthma	8
Osteoperosis	27
Atrial Fibrilation	16
Heart Failure	9
Chronic Obstructive Pulmonary Disease	8
Diabetes	24
Dementia	4
Cancer	14

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2024

Volume of procedures performed by Dr. Kristen A. O'Brien, MD for Medicare patients.

The highest averages for the top procedures that Dr. Kristen A. O'Brien, MD treated as a physician provider in East Setauket, NY were hospital care, inpatient care, blood draw and preventive care.

blood draw	190
diabetes management	15
doctor visit	826
hospital care	288
inpatient care	288
lab tests	150
preventive care	175
vaccines	158

Average Medicare Patient Data From 2012 - 2024

Information about Medicare patients treated by Dr. Kristen A. O'Brien, MD.

**Gender**
Female	283
Male	96

**Ethnicity**
Black / African American	0
Asian / Pacific Islander	0
Non-Hispanic White	353
Native American / Alaskan Native	0
Hispanic	0
Other	8

**Age**
75 to 84	123
85 and over	35
Less than 65	31
65 to 74	190

Average of Total of Conditions of Medicare patients treated by Dr. Kristen A. O'Brien, MD From 2012 - 2024

The highest averages of the most common conditions of Medicare patients that Dr. Kristen A. O'Brien, MD treated were high cholesterol, hypertension, ischemic heart disease and diabetes.

Hypertension	58
High Cholesterol	58
Stroke	3
Ischemic Heart Disease	29
Depression	16
Chronic Kidney Disease	14
Asthma	7
Osteoporosis	13
Heart Failure	10
Chronic Obstructive Pulmonary Disease	9
Diabetes	21
Atrial Fibrillation	13
Dementia	5
Cancer	10

Education & Training

She has a state license in New York.

Licensed In: New York

Affiliations & Hospitals

Dr. Kristen A. O'Brien, MD is associated with these hospitals and organizations:

Mather Primary Care at East Setauket

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. Kristen A. O'Brien, MD appears to accept the following insurance providers: MagnaCare, Elderplan, EmblemHealth (HIP), Affinity by Molina Healthcare, United Healthcare, Aetna, Oxford, Medicare, Medicaid, Anthem Blue Cross and Blue Shield (Empire BCBS), Healthfirst, Humana Military (Tricare), Railroad Medicare, Cigna, 1199 SEIU, Anthem HealthPlus, US Family Health Plan, EmblemHealth (GHI), Senior Whole Health, NYS Empire Plan (NYSHIP), VNS Health, Northwell Direct, WTC (World Trade Center Program) and Hamaspik.

Insurance Accepted by Provider includes:

According to our sources, Dr. Kristen A. O'Brien, MD accepts the following insurance providers:

MagnaCare

Elderplan

EmblemHealth (HIP)

Affinity by Molina Healthcare

United Healthcare

Aetna

Oxford

Medicare

Medicaid

Anthem Blue Cross and Blue Shield (Empire BCBS)

Healthfirst

Humana Military (Tricare)

Railroad Medicare

Cigna

1199 SEIU

Anthem HealthPlus

US Family Health Plan

EmblemHealth (GHI)

Senior Whole Health

NYS Empire Plan (NYSHIP)

VNS Health

Northwell Direct

WTC (World Trade Center Program)

Hamaspik

Ratings & Reviews

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General Payments

These charts describe general payments received by Dr. Kristen A. O'Brien, MD. Doctors may receive payments for a number of reasons, including meal compensation, travel compensation, and consulting.

**Payments by Company**
Takeda Pharmaceuticals America, Inc.	$315 Brintellix $315
Amgen Inc.	$258 Repatha $234	Prolia $25
Apollo Endosurgery US Inc	$149 OverStitch Endoscopic Suturing System $149
AstraZeneca Pharmaceuticals LP	$118 BYDUREON WEEKLY $31	SYMBICORT $30	FARXIGA $30	CRESTOR $15	$12
ZOLL Services LLC (A/K/A ZOLL LifeCor Corp)	$99 LifeVest $99
Other	$677 GORE SYNECOR Biomaterial $86	NovoLog $50	COMBIVENT RESPIMAT $45	TRADJENTA $43	Vascepa $42	Other $411

**Types of Payments**
Food and Beverage	$1,505
Education	$111

Biography

Dr. Kristen Obrien is a family medicine and physician specialist in Smithtown, NY and East Setauket, NY. She is an in-network provider for several insurance carriers, including Anthem, Blue California, and Empire BlueCross BlueShield.

Select Year:

Dr. Kristen A. O'Brien, MD

Office Locations

Noteworthy Medicare Patient Procedures Performed by Dr. Kristen A. O'Brien, 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. Kristen A. O'Brien, MD in 2013

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

2014 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Kristen A. O'Brien, MD in 2014

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

2015 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Kristen A. O'Brien, MD in 2015

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

2016 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Kristen A. O'Brien, MD in 2016

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

2017 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Kristen A. O'Brien, MD in 2017

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

2018 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Kristen A. O'Brien, MD in 2018

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

2019 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Kristen A. O'Brien, MD in 2019

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

2020 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Kristen A. O'Brien, MD in 2020

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

2021 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Kristen A. O'Brien, MD in 2021

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

2022 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Kristen A. O'Brien, MD in 2022

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

2023 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Kristen A. O'Brien, MD in 2023

Medicare Procedure and Patient Information

2024 Medicare Procedure Volume

2024 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Kristen A. O'Brien, 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. Kristen A. O'Brien, MD From 2012 - 2024

Education & Training

Affiliations & Hospitals

Insurance Information

Ratings & Reviews

General Payments

Biography

Other Providers in East Setauket, NY