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Dr. Gregory K. Buller, MD, FACP

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Specializes in: Adult Nephrology

Professional interests include: hypertension (high blood pressure), kidney problems, kidney stones

850 Straits Turnpike
Middlebury, CT 06762

(203) 758-1800

Dr. Gregory K. Buller, MD, FACP is a nephrologist in Bridgeport, CT specializing in adult nephrology. Dr. Gregory K. Buller, MD, FACP is affiliated with Yale New Haven Health and Northeast Medical Group (NEMG).

Office Locations

267 Grant Street
Bridgeport, CT 06610

open_in_new

850 Straits Turnpike
Middlebury, CT 06762

(203) 758-1800

(203) 758-1804

open_in_new

Some issues Dr. Gregory K. Buller, MD, FACP can help you with:

Kidney Stones

Kidney stones are hard deposits that form in the kidneys, made up of minerals that are normally present in urine. They can vary in size, from as small as a grain of sand to as large as a nickel, occasionally even larger. Sometimes they lodge in the kidney, and sometimes they break free and make their way out through the urinary tract, which can be extremely painful.

Kidney stones can be smooth or jagged and are yellow to brown in color. They are mostly comprised of the minerals calcium, oxalate, and phosphorus. Examining the stones to see what they are made of can show what caused the stone to be formed in the first place. For example, a stone made of mostly calcium, which is the most common type, can happen any time the urine becomes too concentrated due to dehydration or a blockage in the kidney. A uric acid stone forms when acid levels in the urine get too high, usually due to excessive consumption of animal protein such as meat and fish. A struvite stone is a sign of certain infections, and a cystine stone can be due to a genetic disorder that raises the risk of kidney stones.

The most common symptom of kidney stones is pain, either in the back or lower abdomen, or severe pain when urinating. There may also be blood in the urine. Treatment for kidney stones depends on how large the stone is. Very small stones can pass out of the body on their own, and they do not require treatment other than drinking adequate water and taking pain killers. Larger stones need to be broken apart and removed. The main treatment options are:

Shock wave lithotripsy, which uses sound wave vibrations to break apart the stone
Percutaneous nephrolithotomy, or the use of a very tiny tool (like a wire inserted through the back) to break apart and remove the stone
Ureteroscopy, a thin tube inserted through the urethra and bladder to the stone, where tiny tools can grasp the stone and remove

People who have had one kidney stone are at risk of developing another. To reduce this risk, patients are given instructions specific to the type of stone they developed. Generally the instructions will include drinking more water to dilute the urine, but it may also involve lowering sodium intake or eating less meat.

In The News (see more mentions in the news)

“Some sniffling Connecticut residents would add seasonal allergies to that list, including Dr. Gregory Buller, chairman of medicine and associate chief medical officer at Bridgeport Hospital.”—"Allergies or coronavirus? Health experts say symptoms could be similar", Fairfield Citizen, February 2022

“Dr. Gregory Buller, chairman of medicine and associate chief medical officer at Bridgeport Hospital, also cheered the removal of the age threshold.”—"CDC: More people at risk of coronavirus complications", Fairfield Citizen, February 2022

“"It's just a few weeks too soon," said Dr. Gregory Buller, Bridgeport Hospital's associate chief medical officer and chairman of the department of medicine.”—"'It's risky': Elevated COVID positivity rate concerns health experts ahead of Friday reopening", Fairfield Citizen, February 2022

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Gregory K. Buller, MD, FACP treated as a nephrologist in Bridgeport, CT during 2012 were hospital care, inpatient care, lab tests and blood draw.

Volume of procedures performed by Dr. Gregory K. Buller, MD, FACP for Medicare patients.

blood draw	52
doctor visit	552
hospital care	387
inpatient care	387
lab tests	58

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Gregory K. Buller, MD, FACP treated as a nephrologist in Bridgeport, CT during 2013 were hospital care, inpatient care, blood draw and preventive care.

Volume of procedures performed by Dr. Gregory K. Buller, MD, FACP for Medicare patients.

blood draw	13
doctor visit	516
hospital care	636
inpatient care	636
preventive care	11
vaccines	11

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory K. Buller, MD, FACP.

**Gender**
Male	186
Female	195

**Ethnicity**
Non-Hispanic White	276
Black	60
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	125
From 75 to 84	106
85 and over	73
Less than 65	77

Conditions of Medicare patients treated by Dr. Gregory K. Buller, MD, FACP in 2013

Hypertension	75
High Cholesterol	66
Stroke	12
Ischemic Heart Disease	57
Depression	32
Chronic Kidney Disease	75
Asthma	7
Osteoperosis	8
Atrial Fibrilation	19
Heart Failure	55
Chronic Obstructive Pulmonary Disease	21
Diabetes	58
Dementia	17
Cancer	12

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Gregory K. Buller, MD, FACP treated as a nephrologist in Bridgeport, CT during 2014 were hospital care and inpatient care.

Volume of procedures performed by Dr. Gregory K. Buller, MD, FACP for Medicare patients.

doctor visit	79
hospital care	16
inpatient care	16

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory K. Buller, MD, FACP.

**Gender**
Male	50
Female	52

**Ethnicity**
Non-Hispanic White	71
Black	19
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	29
From 75 to 84	30
85 and over	25
Less than 65	18

Conditions of Medicare patients treated by Dr. Gregory K. Buller, MD, FACP in 2014

Hypertension	75
High Cholesterol	68
Stroke	12
Ischemic Heart Disease	44
Depression	29
Chronic Kidney Disease	75
Asthma	0
Osteoperosis	0
Atrial Fibrilation	16
Heart Failure	44
Chronic Obstructive Pulmonary Disease	21
Diabetes	48
Dementia	16
Cancer	13

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Gregory K. Buller, MD, FACP treated as a nephrologist in Bridgeport, CT during 2015 were hospital care and inpatient care.

Volume of procedures performed by Dr. Gregory K. Buller, MD, FACP for Medicare patients.

hospital care	83
inpatient care	83

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory K. Buller, MD, FACP.

**Gender**
Male	28
Female	36

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

**Age**
From 65 to 74	0
From 75 to 84	0
85 and over	0
Less than 65	32

Conditions of Medicare patients treated by Dr. Gregory K. Buller, MD, FACP in 2015

Hypertension	75
High Cholesterol	50
Stroke	0
Ischemic Heart Disease	44
Depression	59
Chronic Kidney Disease	75
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	38
Chronic Obstructive Pulmonary Disease	0
Diabetes	41
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Gregory K. Buller, MD, FACP treated as a nephrologist in Bridgeport, CT during 2016 were hospital care and inpatient care.

Volume of procedures performed by Dr. Gregory K. Buller, MD, FACP for Medicare patients.

hospital care	75
inpatient care	75

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory K. Buller, MD, FACP.

**Gender**
Male	32
Female	20

**Ethnicity**
Non-Hispanic White	23
Black	15
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	0
From 75 to 84	0
85 and over	0
Less than 65	23

Conditions of Medicare patients treated by Dr. Gregory K. Buller, MD, FACP in 2016

Hypertension	75
High Cholesterol	65
Stroke	0
Ischemic Heart Disease	35
Depression	35
Chronic Kidney Disease	71
Asthma	42
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	35
Chronic Obstructive Pulmonary Disease	23
Diabetes	52
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Gregory K. Buller, MD, FACP treated as a nephrologist in Bridgeport, CT during 2017 were hospital care and inpatient care.

Volume of procedures performed by Dr. Gregory K. Buller, MD, FACP for Medicare patients.

doctor visit	21
hospital care	72
inpatient care	72

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory K. Buller, MD, FACP.

**Gender**
Male	26
Female	21

**Ethnicity**
Non-Hispanic White	21
Black	11
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	12
From 75 to 84	0
85 and over	0
Less than 65	19

Conditions of Medicare patients treated by Dr. Gregory K. Buller, MD, FACP in 2017

Hypertension	75
High Cholesterol	60
Stroke	0
Ischemic Heart Disease	38
Depression	34
Chronic Kidney Disease	75
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	43
Chronic Obstructive Pulmonary Disease	23
Diabetes	49
Dementia	23
Cancer	0

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Gregory K. Buller, MD, FACP treated as a nephrologist in Bridgeport, CT during 2018 were hospital care and inpatient care.

Volume of procedures performed by Dr. Gregory K. Buller, MD, FACP for Medicare patients.

hospital care	32
inpatient care	32

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory K. Buller, MD, FACP.

**Gender**
Male	25
Female	24

**Ethnicity**
Non-Hispanic White	20
Black	14
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	0
From 75 to 84	14
85 and over	0
Less than 65	22

Conditions of Medicare patients treated by Dr. Gregory K. Buller, MD, FACP in 2018

Hypertension	75
High Cholesterol	71
Stroke	0
Ischemic Heart Disease	49
Depression	37
Chronic Kidney Disease	61
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	33
Chronic Obstructive Pulmonary Disease	29
Diabetes	39
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Gregory K. Buller, MD, FACP treated as a nephrologist in Bridgeport, CT during 2019 were hospital care and inpatient care.

Volume of procedures performed by Dr. Gregory K. Buller, MD, FACP for Medicare patients.

hospital care	33
inpatient care	33

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory K. Buller, MD, FACP.

**Gender**
Male	13
Female	20

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

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

Conditions of Medicare patients treated by Dr. Gregory K. Buller, MD, FACP in 2019

Hypertension	75
High Cholesterol	67
Stroke	0
Ischemic Heart Disease	39
Depression	36
Chronic Kidney Disease	67
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	45
Chronic Obstructive Pulmonary Disease	0
Diabetes	48
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

Conditions of Medicare patients treated by Dr. Gregory K. Buller, MD, FACP in 2020

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

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Gregory K. Buller, MD, FACP treated as a nephrologist in Bridgeport, CT during 2021 were hospital care and inpatient care.

Volume of procedures performed by Dr. Gregory K. Buller, MD, FACP for Medicare patients.

hospital care	100
inpatient care	100

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Gregory K. Buller, MD, FACP.

**Gender**
Male	19
Female	18

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

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

Conditions of Medicare patients treated by Dr. Gregory K. Buller, MD, FACP in 2021

Hypertension	75
High Cholesterol	54
Stroke	0
Ischemic Heart Disease	41
Depression	43
Chronic Kidney Disease	75
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	38
Chronic Obstructive Pulmonary Disease	35
Diabetes	54
Dementia	30
Cancer	0

Medicare Procedure and Patient Information

Conditions of Medicare patients treated by Dr. Gregory K. Buller, MD, FACP in 2022

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

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Gregory K. Buller, MD, FACP for Medicare patients.

The highest averages for the top procedures that Dr. Gregory K. Buller, MD, FACP treated as a nephrologist in Bridgeport, CT were hospital care, inpatient care, lab tests and blood draw.

blood draw	32
doctor visit	292
hospital care	159
inpatient care	159
lab tests	58
preventive care	11
vaccines	11

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Gregory K. Buller, MD, FACP.

**Gender**
Female	35
Male	34

**Ethnicity**
Black / African American	12
Asian / Pacific Islander	0
Non-Hispanic White	41
Native American / Alaskan Native	0
Hispanic	1
Other	0

**Age**
85 and over	8
75 to 84	13
Less than 65	17
65 to 74	17

Average of Total of Conditions of Medicare patients treated by Dr. Gregory K. Buller, MD, FACP From 2012 - 2022

The highest averages of the most common conditions of Medicare patients that Dr. Gregory K. Buller, MD, FACP treated were hypertension, chronic kidney disease, high cholesterol and diabetes.

Hypertension	68
High Cholesterol	45
Stroke	2
Ischemic Heart Disease	31
Depression	27
Chronic Kidney Disease	52
Asthma	4
Osteoporosis	0
Heart Failure	30
Chronic Obstructive Pulmonary Disease	13
Diabetes	35
Atrial Fibrillation	3
Dementia	7
Cancer	2

Education & Training

He completed residency at Duke University Medical Center. He has a state license in Connecticut.

Residency: Duke University Medical Center

Licensed In: Connecticut

Affiliations & Hospitals

Dr. Gregory K. Buller, MD, FACP is associated with these hospitals and organizations:

Yale New Haven Health

Northeast Medical Group (NEMG)

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. Gregory K. Buller, MD, FACP appears to accept the following insurance providers: Neighborhood Health Plan, MagnaCare, MultiPlan, United Healthcare, Aetna, Oxford Health Plans, Medicare, Consumer Health Network, Medicaid, Cigna, Blue California, Anthem, ConnectiCare, Magellan Health Services, BEACON HEALTH OPTIONS (BEHAVIORAL), EVERNORTH (BEHAVIORAL HEALTH ONLY), TRICARE/CHAMPUS, OPTUM (BEHAVIORAL HEALTH ONLY) and VA COMMUNITY CARE NETWORK.

Insurance Accepted by Provider includes:

According to our sources, Dr. Gregory K. Buller, MD, FACP accepts the following insurance providers:

Neighborhood Health Plan

MagnaCare

MultiPlan

United Healthcare

Aetna

Oxford Health Plans

Medicare

Consumer Health Network

Medicaid

Cigna

Blue California

Anthem

ConnectiCare

Magellan Health Services

BEACON HEALTH OPTIONS (BEHAVIORAL)

EVERNORTH (BEHAVIORAL HEALTH ONLY)

TRICARE/CHAMPUS

OPTUM (BEHAVIORAL HEALTH ONLY)

VA COMMUNITY CARE NETWORK

Ratings & Reviews

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General Payments

These charts describe general payments received by Dr. Gregory K. Buller, MD, FACP. Doctors may receive payments for a number of reasons, including meal compensation, travel compensation, and consulting.

**Payments by Company**
Relypsa, Inc.	$88 VELTASSA $88
Alexion Pharmaceuticals, Inc.	$45 SOLIRIS $45
St. Jude Medical, Inc.	$30 Vascular $30
The Medicines Company	$23 ORBACTIV $23
E.R. Squibb & Sons, L.L.C.	$22 ELIQUIS $22
Other	$48 Sensipar $19	RENVELA $18	Uloric $12

**Types of Payments**
Food and Beverage	$146
Education	$110

Biography

Dr. Gregory Buller works as an adult nephrology. Dr. Buller's training includes a residency program at Duke University Medical Center. He is especially interested in kidney stones and hypertension (high blood pressure). He is an in-network provider for several insurance carriers, including Magellan Health Services, Anthem, and Blue California. He is affiliated with Northeast Medical Group (NEMG). Dr. Buller is not accepting new patients at this time according to Yale New Haven Health.

Select Year:

Dr. Gregory K. Buller, MD, FACP

Office Locations

Some issues Dr. Gregory K. Buller, MD, FACP can help you with:

In The News (see more mentions in the news)

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. Gregory K. Buller, MD, FACP in 2013

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

2014 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Gregory K. Buller, MD, FACP in 2014

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

2015 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Gregory K. Buller, MD, FACP in 2015

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

2016 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Gregory K. Buller, MD, FACP in 2016

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

2017 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Gregory K. Buller, MD, FACP in 2017

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

2018 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Gregory K. Buller, MD, FACP in 2018

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

2019 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Gregory K. Buller, MD, FACP in 2019

Medicare Procedure and Patient Information

Conditions of Medicare patients treated by Dr. Gregory K. Buller, MD, FACP in 2020

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

2021 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Gregory K. Buller, MD, FACP in 2021

Medicare Procedure and Patient Information

Conditions of Medicare patients treated by Dr. Gregory K. Buller, MD, FACP 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. Gregory K. Buller, MD, FACP From 2012 - 2022

Education & Training

Affiliations & Hospitals

Insurance Information

Ratings & Reviews

General Payments

Biography

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