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Dr. Anthony T. Zaldonis, MD

(Dr. Anthony Zaldonis, MD)

(7 Ratings)

Specializes in: Adult Gastroenterology

Professional interests include: gastrointestinal problems (digestive disorders)

350 Silas Deane Highway Suite 102
Wethersfield, CT 06109

(860) 529-8670

Dr. Anthony T. Zaldonis, MD is a gastroenterologist in Hartford, CT specializing in adult gastroenterology. Dr. Anthony T. Zaldonis, MD is affiliated with Trinity Health of New England.

Office Locations

Trinity Health of New England

1000 Asylum Avenue Suite 1004
Hartford, CT 06105

(860) 714-5106

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Trinity Health of New England

114 Woodland Street
Endoscopy Hartford, CT 06105

(860) 714-7200

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Trinity Health of New England

342 N Main Street Suite 350
West Hartford, CT 06117

(860) 296-4022

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Trinity Health of New England

350 Silas Deane Highway Suite 102
Wethersfield, CT 06109

(860) 529-8670

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Trinity Health of New England

44 Dale Road Suite 204
Avon, CT 06001

(860) 674-8830

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9 Cranbrook Boulevard Floor 2
Enfield, CT 06082

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Trinity Health of New England

925 Sullivan Avenue Suite 1
South Windsor, CT 06074

(860) 644-1521

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Some issues Dr. Anthony T. Zaldonis, MD can help you with:

Gastrointestinal Problems (Digestive Disorders)

The gastrointestinal system, or GI tract, is the name given to a collection of organs that work together to digest food. These organs fit together in a long tube, running from the mouth to the anus, and include the esophagus, stomach, and intestines, among others. With so many parts working together, complicated by today's busy lifestyles and diets, digestive problems are common. As many as 1 in 3 Americans have a digestive or GI disorder. There are a huge variety of digestive problems, but the most common are IBS, constipation, GERD, hemorrhoids, and ulcers.

IBS, or irritable bowel syndrome, happens when the muscles surrounding the colon contract too easily or frequently. The result is abdominal pain, cramps, diarrhea or constipation, gas and bloating. IBS attacks can often be brought on by specific triggers, so a key part of treatment is learning which foods trigger IBS attacks and avoiding them. Treatment also includes exercise, avoiding stress, and medications if needed.

Constipation, or large, hard, or infrequent stools, happens to everyone at some point. It can be caused by a disruption in routine or food, or by eating a diet without many fresh fruits and vegetables. Although it is uncomfortable, constipation is common and usually not serious, but it can sometimes become chronic. Adding fiber to the diet, exercising, and taking medications may help.

GERD, or gastroesophageal reflux disease, is a severe form of chronic heartburn where stomach acid spills back up into the esophagus. Left untreated, the acid may even eat away at the esophagus and cause serious damage. Treatment includes changing the diet to avoid trigger foods, losing weight if needed, medications, or even surgery.

Hemorrhoids are blood vessels around the rectum that become irritated, swollen or torn while straining during a bowel movement. They are most often caused by constipation, but can also be caused by pregnancy, diarrhea, or simply a genetic predisposition towards hemorrhoids. Treatment involves first treating any constipation issues, then keeping the area clean and soothed until it has healed. If these measures are ineffective, surgery is sometimes used.

Peptic ulcers are sores or spots of inflammation in the lining of the stomach or close to the stomach in the small intestine. Usually this area is coated with a protective lining that shields the tissue from the strong stomach acid, but a break in the lining can let acid in, causing the sores. It used to be thought that stress caused ulcers, but now it is known that is not the case. Most often, they are caused by an infection by H. pylori bacteria, but ulcers can also be caused by alcohol abuse or overuse of aspirin, ibuprofen, naproxen, or other NSAIDS. The symptoms of an ulcer are pain, hunger, nausea, and fatigue.

Gastrointestinal problems, perhaps more than any other area, are markedly affected by lifestyle. Many disorders can be prevented or treated at least in part by eating a healthy diet high in fiber, exercising regularly, drinking enough water, and limiting alcohol intake. Still, the frequency of digestive disorders means that even the healthiest person can be affected by them. Anyone who notices blood in their stool, experiences abdominal pain, unexplained weight loss, or any significant change in bowel movements should see a doctor.

Noteworthy Medicare Patient Procedures Performed by Dr. Anthony T. Zaldonis, MD in 2023

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

Top 25%

By Volume:

inpatient hospital care

In 2012, Dr. Anthony T. Zaldonis, MD performed more inpatient hospital care (for patient admitted to hospital) 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. Anthony T. Zaldonis, MD treated as a gastroenterologist in Hartford, CT during 2012 were hospital care, inpatient care, minimally invasive procedures and gastrointestinal procedures.

Volume of procedures performed by Dr. Anthony T. Zaldonis, MD for Medicare patients.

diagnostic procedures	255
doctor visit	671
gastrointestinal procedures	364
hospital care	604
injections	13
inpatient care	604
minimally invasive procedures	364
preventive care	81
removal of lesion (e.g. growth)	255

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Anthony T. Zaldonis, MD treated as a gastroenterologist in Hartford, CT during 2013 were hospital care, inpatient care, minimally invasive procedures and gastrointestinal procedures.

Volume of procedures performed by Dr. Anthony T. Zaldonis, MD for Medicare patients.

diagnostic procedures	243
doctor visit	588
gastrointestinal procedures	321
hospital care	539
inpatient care	539
minimally invasive procedures	321
preventive care	64
removal of lesion (e.g. growth)	243

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Anthony T. Zaldonis, MD.

**Gender**
Male	312
Female	381

**Ethnicity**
Non-Hispanic White	576
Black	67
Hispanic	31
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	266
From 75 to 84	250
85 and over	127
Less than 65	50

Conditions of Medicare patients treated by Dr. Anthony T. Zaldonis, MD in 2013

Hypertension	75
High Cholesterol	67
Stroke	7
Ischemic Heart Disease	45
Depression	26
Chronic Kidney Disease	32
Asthma	9
Osteoperosis	12
Atrial Fibrilation	21
Heart Failure	32
Chronic Obstructive Pulmonary Disease	21
Diabetes	36
Dementia	16
Cancer	15

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Anthony T. Zaldonis, MD treated as a gastroenterologist in Hartford, CT during 2014 were hospital care, inpatient care, minimally invasive procedures and gastrointestinal procedures.

Volume of procedures performed by Dr. Anthony T. Zaldonis, MD for Medicare patients.

diagnostic procedures	242
doctor visit	583
gastrointestinal procedures	321
hospital care	542
inpatient care	542
minimally invasive procedures	321
preventive care	67
removal of lesion (e.g. growth)	242

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Anthony T. Zaldonis, MD.

**Gender**
Male	291
Female	403

**Ethnicity**
Non-Hispanic White	561
Black	75
Hispanic	33
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	255
From 75 to 84	229
85 and over	146
Less than 65	64

Conditions of Medicare patients treated by Dr. Anthony T. Zaldonis, MD in 2014

Hypertension	75
High Cholesterol	62
Stroke	7
Ischemic Heart Disease	43
Depression	28
Chronic Kidney Disease	33
Asthma	12
Osteoperosis	12
Atrial Fibrilation	22
Heart Failure	31
Chronic Obstructive Pulmonary Disease	19
Diabetes	31
Dementia	17
Cancer	16

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Anthony T. Zaldonis, MD treated as a gastroenterologist in Hartford, CT during 2015 were hospital care, inpatient care, minimally invasive procedures and gastrointestinal procedures.

Volume of procedures performed by Dr. Anthony T. Zaldonis, MD for Medicare patients.

diagnostic procedures	242
doctor visit	703
gastrointestinal procedures	306
hospital care	493
injections	15
inpatient care	493
minimally invasive procedures	306
preventive care	49
removal of lesion (e.g. growth)	242

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Anthony T. Zaldonis, MD.

**Gender**
Male	636
Female	724

**Ethnicity**
Non-Hispanic White	1136
Black	128
Hispanic	48
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	520
From 75 to 84	454
85 and over	252
Less than 65	134

Conditions of Medicare patients treated by Dr. Anthony T. Zaldonis, MD in 2015

Hypertension	75
High Cholesterol	66
Stroke	9
Ischemic Heart Disease	43
Depression	30
Chronic Kidney Disease	36
Asthma	15
Osteoperosis	12
Atrial Fibrilation	23
Heart Failure	31
Chronic Obstructive Pulmonary Disease	20
Diabetes	35
Dementia	15
Cancer	14

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Anthony T. Zaldonis, MD treated as a gastroenterologist in Hartford, CT during 2016 were minimally invasive procedures, gastrointestinal procedures, hospital care and inpatient care.

Volume of procedures performed by Dr. Anthony T. Zaldonis, MD for Medicare patients.

diagnostic procedures	339
doctor visit	739
gastrointestinal procedures	454
hospital care	401
inpatient care	401
minimally invasive procedures	454
preventive care	99
removal of lesion (e.g. growth)	339

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Anthony T. Zaldonis, MD.

**Gender**
Male	355
Female	393

**Ethnicity**
Non-Hispanic White	634
Black	53
Hispanic	31
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	312
From 75 to 84	251
85 and over	130
Less than 65	55

Conditions of Medicare patients treated by Dr. Anthony T. Zaldonis, MD in 2016

Hypertension	74
High Cholesterol	64
Stroke	5
Ischemic Heart Disease	37
Depression	26
Chronic Kidney Disease	32
Asthma	21
Osteoperosis	10
Atrial Fibrilation	18
Heart Failure	22
Chronic Obstructive Pulmonary Disease	17
Diabetes	31
Dementia	15
Cancer	14

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Anthony T. Zaldonis, MD treated as a gastroenterologist in Hartford, CT during 2017 were minimally invasive procedures, gastrointestinal procedures, hospital care and inpatient care.

Volume of procedures performed by Dr. Anthony T. Zaldonis, MD for Medicare patients.

diagnostic procedures	338
doctor visit	657
gastrointestinal procedures	457
hospital care	453
injections	12
inpatient care	453
minimally invasive procedures	457
preventive care	93
removal of lesion (e.g. growth)	338

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Anthony T. Zaldonis, MD.

**Gender**
Male	343
Female	432

**Ethnicity**
Non-Hispanic White	675
Black	43
Hispanic	27
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	324
From 75 to 84	264
85 and over	136
Less than 65	51

Conditions of Medicare patients treated by Dr. Anthony T. Zaldonis, MD in 2017

Hypertension	75
High Cholesterol	54
Stroke	6
Ischemic Heart Disease	41
Depression	27
Chronic Kidney Disease	36
Asthma	11
Osteoperosis	12
Atrial Fibrilation	20
Heart Failure	26
Chronic Obstructive Pulmonary Disease	20
Diabetes	29
Dementia	16
Cancer	15

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Anthony T. Zaldonis, MD treated as a gastroenterologist in Hartford, CT during 2018 were hospital care, inpatient care, minimally invasive procedures and gastrointestinal procedures.

Volume of procedures performed by Dr. Anthony T. Zaldonis, MD for Medicare patients.

diagnostic procedures	245
doctor visit	423
gastrointestinal procedures	312
hospital care	366
inpatient care	366
minimally invasive procedures	312
preventive care	52
removal of lesion (e.g. growth)	245

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Anthony T. Zaldonis, MD.

**Gender**
Male	257
Female	308

**Ethnicity**
Non-Hispanic White	495
Black	28
Hispanic	19
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	219
From 75 to 84	195
85 and over	106
Less than 65	45

Conditions of Medicare patients treated by Dr. Anthony T. Zaldonis, MD in 2018

Hypertension	75
High Cholesterol	70
Stroke	6
Ischemic Heart Disease	42
Depression	32
Chronic Kidney Disease	36
Asthma	12
Osteoperosis	12
Atrial Fibrilation	21
Heart Failure	31
Chronic Obstructive Pulmonary Disease	20
Diabetes	31
Dementia	19
Cancer	14

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Anthony T. Zaldonis, MD treated as a gastroenterologist in Hartford, CT during 2019 were hospital care, inpatient care, minimally invasive procedures and gastrointestinal procedures.

Volume of procedures performed by Dr. Anthony T. Zaldonis, MD for Medicare patients.

diagnostic procedures	245
doctor visit	312
gastrointestinal procedures	323
hospital care	350
inpatient care	350
minimally invasive procedures	323
preventive care	60
removal of lesion (e.g. growth)	245

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Anthony T. Zaldonis, MD.

**Gender**
Male	260
Female	244

**Ethnicity**
Non-Hispanic White	428
Black	33
Hispanic	21
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	193
From 75 to 84	191
85 and over	82
Less than 65	38

Conditions of Medicare patients treated by Dr. Anthony T. Zaldonis, MD in 2019

Hypertension	75
High Cholesterol	69
Stroke	8
Ischemic Heart Disease	43
Depression	32
Chronic Kidney Disease	40
Asthma	9
Osteoperosis	14
Atrial Fibrilation	21
Heart Failure	28
Chronic Obstructive Pulmonary Disease	21
Diabetes	33
Dementia	15
Cancer	16

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Anthony T. Zaldonis, MD treated as a gastroenterologist in Hartford, CT during 2020 were hospital care, inpatient care, minimally invasive procedures and gastrointestinal procedures.

Volume of procedures performed by Dr. Anthony T. Zaldonis, MD for Medicare patients.

diagnostic procedures	188
doctor visit	283
gastrointestinal procedures	249
hospital care	324
inpatient care	324
lab tests	15
minimally invasive procedures	249
preventive care	60
removal of lesion (e.g. growth)	188

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Anthony T. Zaldonis, MD.

**Gender**
Male	265
Female	230

**Ethnicity**
Non-Hispanic White	422
Black	36
Hispanic	17
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	177
From 75 to 84	188
85 and over	91
Less than 65	39

Conditions of Medicare patients treated by Dr. Anthony T. Zaldonis, MD in 2020

Hypertension	75
High Cholesterol	70
Stroke	5
Ischemic Heart Disease	47
Depression	31
Chronic Kidney Disease	43
Asthma	11
Osteoperosis	10
Atrial Fibrilation	19
Heart Failure	29
Chronic Obstructive Pulmonary Disease	18
Diabetes	32
Dementia	14
Cancer	17

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Anthony T. Zaldonis, MD treated as a gastroenterologist in Hartford, CT during 2021 were minimally invasive procedures, gastrointestinal procedures, hospital care and inpatient care.

Volume of procedures performed by Dr. Anthony T. Zaldonis, MD for Medicare patients.

diagnostic procedures	213
doctor visit	206
gastrointestinal procedures	247
hospital care	246
inpatient care	246
minimally invasive procedures	247
preventive care	34
removal of lesion (e.g. growth)	213

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Anthony T. Zaldonis, MD.

**Gender**
Male	199
Female	199

**Ethnicity**
Non-Hispanic White	338
Black	23
Hispanic	18
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	157
From 75 to 84	151
85 and over	62
Less than 65	28

Conditions of Medicare patients treated by Dr. Anthony T. Zaldonis, MD in 2021

Hypertension	75
High Cholesterol	72
Stroke	5
Ischemic Heart Disease	42
Depression	29
Chronic Kidney Disease	41
Asthma	11
Osteoperosis	12
Atrial Fibrilation	17
Heart Failure	27
Chronic Obstructive Pulmonary Disease	18
Diabetes	32
Dementia	12
Cancer	15

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Anthony T. Zaldonis, MD treated as a gastroenterologist in Hartford, CT during 2022 were minimally invasive procedures, gastrointestinal procedures, hospital care and inpatient care.

Volume of procedures performed by Dr. Anthony T. Zaldonis, MD for Medicare patients.

diagnostic procedures	215
doctor visit	214
esophageal dilation	12
gastrointestinal procedures	261
hospital care	246
inpatient care	246
minimally invasive procedures	261
preventive care	34
removal of lesion (e.g. growth)	215

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Anthony T. Zaldonis, MD.

**Gender**
Male	197
Female	203

**Ethnicity**
Non-Hispanic White	337
Black	21
Hispanic	0
Asian	0
Other	24
Native American	0

**Age**
From 65 to 74	137
From 75 to 84	163
85 and over	67
Less than 65	33

Conditions of Medicare patients treated by Dr. Anthony T. Zaldonis, MD in 2022

Hypertension	75
High Cholesterol	75
Stroke	12
Ischemic Heart Disease	34
Depression	29
Chronic Kidney Disease	26
Asthma	13
Osteoperosis	17
Atrial Fibrilation	27
Heart Failure	22
Chronic Obstructive Pulmonary Disease	21
Diabetes	27
Dementia	9
Cancer	21

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

The top procedures that Dr. Anthony T. Zaldonis, MD treated as a gastroenterologist in Hartford, CT during 2023 were minimally invasive procedures, gastrointestinal procedures, removal of lesion (e.g. growth) and diagnostic procedures.

Volume of procedures performed by Dr. Anthony T. Zaldonis, MD for Medicare patients.

diagnostic procedures	166
doctor visit	182
gastrointestinal procedures	196
hospital care	159
inpatient care	159
minimally invasive procedures	196
preventive care	30
removal of lesion (e.g. growth)	166

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. Anthony T. Zaldonis, MD.

**Gender**
Male	165
Female	168

**Ethnicity**
Non-Hispanic White	284
Black	15
Hispanic	0
Asian	0
Other	23
Native American	0

**Age**
From 65 to 74	125
From 75 to 84	138
85 and over	57
Less than 65	13

Conditions of Medicare patients treated by Dr. Anthony T. Zaldonis, MD in 2023

Hypertension	75
High Cholesterol	75
Stroke	10
Ischemic Heart Disease	32
Depression	26
Chronic Kidney Disease	26
Asthma	15
Osteoperosis	21
Atrial Fibrilation	22
Heart Failure	21
Chronic Obstructive Pulmonary Disease	15
Diabetes	23
Dementia	8
Cancer	23

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2023

Volume of procedures performed by Dr. Anthony T. Zaldonis, MD for Medicare patients.

The highest averages for the top procedures that Dr. Anthony T. Zaldonis, MD treated as a gastroenterologist in Hartford, CT were hospital care, inpatient care, minimally invasive procedures and gastrointestinal procedures.

diagnostic procedures	244
doctor visit	463
esophageal dilation	12
gastrointestinal procedures	317
hospital care	393
injections	13
inpatient care	393
lab tests	15
minimally invasive procedures	317
preventive care	60
removal of lesion (e.g. growth)	244

Average Medicare Patient Data From 2012 - 2023

Information about Medicare patients treated by Dr. Anthony T. Zaldonis, MD.

**Gender**
Female	307
Male	273

**Ethnicity**
Black / African American	43
Asian / Pacific Islander	0
Non-Hispanic White	490
Hispanic	20
Native American / Alaskan Native	0
Other	3

**Age**
85 and over	104
75 to 84	206
Less than 65	45
65 to 74	223

Average of Total of Conditions of Medicare patients treated by Dr. Anthony T. Zaldonis, MD From 2012 - 2023

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

Hypertension	68
High Cholesterol	62
Stroke	6
Ischemic Heart Disease	37
Depression	26
Chronic Kidney Disease	31
Asthma	11
Osteoporosis	12
Heart Failure	25
Chronic Obstructive Pulmonary Disease	17
Diabetes	28
Atrial Fibrillation	19
Dementia	13
Cancer	15

Education & Training

He completed residency at University of Connecticut Affiliated Hospitals. He is certified by the Internal Medicine, Internal Medicine, American Board and has a state license in Connecticut.

Residency: University of Connecticut Affiliated Hospitals

Board Certification: Internal Medicine, Internal Medicine, American Board (1982)

Licensed In: Connecticut

Affiliations & Hospitals

Dr. Anthony T. Zaldonis, MD is associated with these hospitals and organizations:

Trinity Health of New England

Ratings & Reviews

Dr. Anthony T. Zaldonis, MD has a high overall rating with an average of 4.0 out of 5 stars based on 7 ratings. We collect ratings and reviews of Dr. Anthony T. Zaldonis, MD from all over the web to help you find the right in Hartford, CT.

Overall Rating

(7 Ratings)

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General Payments

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

**Payments by Company**
AbbVie, Inc.	$1,139 Humira $715	Creon $175	Lupron $65	Viekira $63	Mavyret $59	Other $63
AbbVie Inc.	$1,015 Humira $349	Skyrizi $344	Rinvoq $173	Creon $109	LINZESS $22	Other $18
Janssen Biotech, Inc.	$534 SIMPONI $216	STELARA $181	OLYSIO $137
Gilead Sciences Inc	$532 Harvoni $94	$438
Takeda Pharmaceuticals U.S.A., Inc.	$407 ENTYVIO $332	GATTEX $53	Dexilant $12	AMITIZA $11
Other	$4,434 ZEPOSIA $388	VIBERZI $307	LINZESS $282	XIFAXAN $234	PENTASA $232	Other $2,991

**Types of Payments**
Food and Beverage	$7,928
Education	$116
Consulting Fee	$18

Biography

Dr. Anthony Zaldonis is a specialist in adult gastroenterology in Avon, CT, South Windsor, CT, and Wethersfield, CT. Areas of expertise for Dr. Zaldonis include gastrointestinal problems (digestive disorders) and internal medicine. He is affiliated with Trinity Health of New England. Dr. Zaldonis's medical residency was performed at a hospital affiliated with the University of Connecticut.