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Dr. William Gray, MD

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Specializes in: Internal Medicine (Adult Medicine) and Hospital Medicine (Hospitalist)

130 Division Street
Derby, CT 06418

(203) 732-1330

Dr. William Gray, MD is an internist in Derby, CT specializing in internal medicine (adult medicine) and hospital medicine (hospitalist).

Office Locations

130 Division Street
Derby, CT 06418

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Noteworthy Medicare Patient Procedures Performed by Dr. William Gray, MD in 2024

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

Top 5%

By Volume:

nursing home care

In 2024, Dr. William Gray, MD performed more nursing home care procedures for Medicare patients than 95% of providers in related specialties within Connecticut.

Top 25%

By Affordability:

nursing home care

In 2012, Dr. William Gray, MD had a list price for nursing home care that was lower than the list prices billed to Medicare by 75% of providers in related specialties within Connecticut. 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 Gray, MD treated as an internist in Derby, CT during 2012 were hospital care and inpatient care.

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

hospital care	269
inpatient care	269

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. William Gray, MD treated as an internist in Derby, CT during 2013 were hospital care, inpatient care and outpatient care.

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

hospital care	522
inpatient care	484
outpatient care	38

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. William Gray, MD.

**Gender**
Male	230
Female	316

**Ethnicity**
Non-Hispanic White	459
Black	45
Hispanic	31
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	105
From 75 to 84	140
85 and over	209
Less than 65	92

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

Hypertension	75
High Cholesterol	62
Stroke	10
Ischemic Heart Disease	53
Depression	46
Chronic Kidney Disease	52
Asthma	14
Osteoperosis	13
Atrial Fibrilation	29
Heart Failure	45
Chronic Obstructive Pulmonary Disease	33
Diabetes	44
Dementia	36
Cancer	17

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. William Gray, MD treated as an internist in Derby, CT during 2014 were hospital care, inpatient care and outpatient care.

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

hospital care	344
inpatient care	286
outpatient care	58

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. William Gray, MD.

**Gender**
Male	147
Female	220

**Ethnicity**
Non-Hispanic White	335
Black	0
Hispanic	12
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	68
From 75 to 84	114
85 and over	138
Less than 65	47

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

Hypertension	75
High Cholesterol	70
Stroke	11
Ischemic Heart Disease	54
Depression	46
Chronic Kidney Disease	51
Asthma	17
Osteoperosis	14
Atrial Fibrilation	28
Heart Failure	46
Chronic Obstructive Pulmonary Disease	38
Diabetes	41
Dementia	34
Cancer	20

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. William Gray, MD treated as an internist in Derby, CT during 2015 were hospital care, inpatient care and outpatient care.

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

hospital care	404
inpatient care	254
outpatient care	150

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. William Gray, MD.

**Gender**
Male	384
Female	438

**Ethnicity**
Non-Hispanic White	730
Black	32
Hispanic	32
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	170
From 75 to 84	228
85 and over	286
Less than 65	138

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

Hypertension	75
High Cholesterol	70
Stroke	12
Ischemic Heart Disease	53
Depression	43
Chronic Kidney Disease	52
Asthma	28
Osteoperosis	13
Atrial Fibrilation	28
Heart Failure	46
Chronic Obstructive Pulmonary Disease	38
Diabetes	43
Dementia	34
Cancer	19

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. William Gray, MD treated as an internist in Derby, CT during 2016 were hospital care, inpatient care, outpatient care and preventive care.

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

doctor visit	196
hospital care	241
inpatient care	191
outpatient care	50
preventive care	38
vaccines	38

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. William Gray, MD.

**Gender**
Male	175
Female	188

**Ethnicity**
Non-Hispanic White	326
Black	0
Hispanic	0
Asian	0
Other	11
Native American	0

**Age**
From 65 to 74	118
From 75 to 84	101
85 and over	82
Less than 65	62

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

Hypertension	75
High Cholesterol	60
Stroke	9
Ischemic Heart Disease	45
Depression	37
Chronic Kidney Disease	39
Asthma	31
Osteoperosis	9
Atrial Fibrilation	23
Heart Failure	36
Chronic Obstructive Pulmonary Disease	29
Diabetes	38
Dementia	22
Cancer	13

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. William Gray, MD treated as an internist in Derby, CT during 2017 were debridement (removal of unhealthy tissue), excision, preventive care and anorectal procedures.

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

anorectal procedures	11
debridement (removal of unhealthy tissue)	812
doctor visit	649
excision	791
preventive care	11

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. William Gray, MD.

**Gender**
Male	187
Female	172

**Ethnicity**
Non-Hispanic White	330
Black	0
Hispanic	0
Asian	0
Other	13
Native American	0

**Age**
From 65 to 74	123
From 75 to 84	104
85 and over	68
Less than 65	64

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

Hypertension	74
High Cholesterol	49
Stroke	6
Ischemic Heart Disease	39
Depression	33
Chronic Kidney Disease	47
Asthma	8
Osteoperosis	11
Atrial Fibrilation	20
Heart Failure	28
Chronic Obstructive Pulmonary Disease	25
Diabetes	41
Dementia	20
Cancer	12

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. William Gray, MD treated as an internist in Derby, CT during 2018 were debridement (removal of unhealthy tissue), excision, hospital care and inpatient care.

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

debridement (removal of unhealthy tissue)	1075
doctor visit	422
excision	1008
hospital care	15
inpatient care	15

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. William Gray, MD.

**Gender**
Male	130
Female	145

**Ethnicity**
Non-Hispanic White	256
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	67
From 75 to 84	82
85 and over	68
Less than 65	58

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

Hypertension	75
High Cholesterol	61
Stroke	5
Ischemic Heart Disease	44
Depression	41
Chronic Kidney Disease	58
Asthma	11
Osteoperosis	10
Atrial Fibrilation	24
Heart Failure	38
Chronic Obstructive Pulmonary Disease	32
Diabetes	51
Dementia	27
Cancer	11

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. William Gray, MD treated as an internist in Derby, CT during 2019 were debridement (removal of unhealthy tissue) and excision.

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

debridement (removal of unhealthy tissue)	679
doctor visit	208
excision	614

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. William Gray, MD.

**Gender**
Male	76
Female	81

**Ethnicity**
Non-Hispanic White	143
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	40
From 75 to 84	47
85 and over	40
Less than 65	30

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

Hypertension	75
High Cholesterol	66
Stroke	0
Ischemic Heart Disease	48
Depression	39
Chronic Kidney Disease	59
Asthma	12
Osteoperosis	11
Atrial Fibrilation	31
Heart Failure	41
Chronic Obstructive Pulmonary Disease	27
Diabetes	52
Dementia	20
Cancer	10

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. William Gray, MD treated as an internist in Derby, CT during 2020 were nursing home care.

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

nursing home care	3273

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. William Gray, MD.

**Gender**
Male	256
Female	351

**Ethnicity**
Non-Hispanic White	492
Black	59
Hispanic	41
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	117
From 75 to 84	159
85 and over	272
Less than 65	59

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

Hypertension	75
High Cholesterol	57
Stroke	13
Ischemic Heart Disease	52
Depression	63
Chronic Kidney Disease	65
Asthma	9
Osteoperosis	9
Atrial Fibrilation	29
Heart Failure	52
Chronic Obstructive Pulmonary Disease	31
Diabetes	47
Dementia	70
Cancer	13

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. William Gray, MD treated as an internist in Derby, CT during 2021 were nursing home care.

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

nursing home care	3530

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. William Gray, MD.

**Gender**
Male	279
Female	386

**Ethnicity**
Non-Hispanic White	552
Black	56
Hispanic	40
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	139
From 75 to 84	166
85 and over	304
Less than 65	56

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

Hypertension	75
High Cholesterol	63
Stroke	14
Ischemic Heart Disease	51
Depression	60
Chronic Kidney Disease	67
Asthma	9
Osteoperosis	12
Atrial Fibrilation	31
Heart Failure	55
Chronic Obstructive Pulmonary Disease	27
Diabetes	44
Dementia	64
Cancer	13

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. William Gray, MD treated as an internist in Derby, CT during 2022 were nursing home care.

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

nursing home care	4345

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. William Gray, MD.

**Gender**
Male	332
Female	440

**Ethnicity**
Non-Hispanic White	672
Black	43
Hispanic	33
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	153
From 75 to 84	209
85 and over	360
Less than 65	50

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

Hypertension	75
High Cholesterol	72
Stroke	20
Ischemic Heart Disease	41
Depression	57
Chronic Kidney Disease	43
Asthma	11
Osteoperosis	17
Atrial Fibrilation	42
Heart Failure	45
Chronic Obstructive Pulmonary Disease	32
Diabetes	43
Dementia	53
Cancer	17

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

The top procedures that Dr. William Gray, MD treated as an internist in Derby, CT during 2023 were nursing home care.

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

nursing home care	4340

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. William Gray, MD.

**Gender**
Male	318
Female	411

**Ethnicity**
Non-Hispanic White	641
Black	29
Hispanic	40
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	145
From 75 to 84	207
85 and over	339
Less than 65	38

Conditions of Medicare patients treated by Dr. William Gray, MD in 2023

Hypertension	75
High Cholesterol	72
Stroke	20
Ischemic Heart Disease	41
Depression	63
Chronic Kidney Disease	41
Asthma	12
Osteoperosis	14
Atrial Fibrilation	39
Heart Failure	48
Chronic Obstructive Pulmonary Disease	31
Diabetes	43
Dementia	55
Cancer	17

Medicare Procedure and Patient Information

2024 Medicare Procedure Volume

The top procedures that Dr. William Gray, MD treated as an internist in Derby, CT during 2024 were nursing home care.

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

nursing home care	3444

2024 Medicare Patient Data

Information about Medicare patients treated by Dr. William Gray, MD.

**Gender**
Male	260
Female	360

**Ethnicity**
Non-Hispanic White	530
Black	36
Hispanic	35
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	113
From 75 to 84	190
85 and over	282
Less than 65	35

Conditions of Medicare patients treated by Dr. William Gray, MD in 2024

Hypertension	75
High Cholesterol	75
Stroke	21
Ischemic Heart Disease	43
Depression	63
Chronic Kidney Disease	46
Asthma	11
Osteoperosis	16
Atrial Fibrilation	42
Heart Failure	49
Chronic Obstructive Pulmonary Disease	29
Diabetes	42
Dementia	56
Cancer	18

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2024

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

The highest averages for the top procedures that Dr. William Gray, MD treated as an internist in Derby, CT were nursing home care, debridement (removal of unhealthy tissue), excision and hospital care.

anorectal procedures	11
debridement (removal of unhealthy tissue)	855
doctor visit	368
excision	804
hospital care	299
inpatient care	249
nursing home care	3786
outpatient care	74
preventive care	24
vaccines	38

Average Medicare Patient Data From 2012 - 2024

Information about Medicare patients treated by Dr. William Gray, MD.

**Gender**
Female	269
Male	213

**Ethnicity**
Black / African American	23
Asian / Pacific Islander	0
Non-Hispanic White	420
Hispanic	20
Native American / Alaskan Native	0
Other	1

**Age**
85 and over	188
75 to 84	134
Less than 65	56
65 to 74	104

Average of Total of Conditions of Medicare patients treated by Dr. William Gray, MD From 2012 - 2024

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

Hypertension	69
High Cholesterol	59
Stroke	10
Ischemic Heart Disease	43
Depression	45
Chronic Kidney Disease	47
Asthma	13
Osteoporosis	11
Heart Failure	40
Chronic Obstructive Pulmonary Disease	28
Diabetes	40
Atrial Fibrillation	28
Dementia	37
Cancer	13

Education & Training

He has a state license in Connecticut.

Licensed In: Connecticut

Ratings & Reviews

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General Payments

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

**Payments by Company**
Organogenesis Inc.	$519 Apligraf $317	$203
Smith+Nephew, Inc.	$445 RENASYS GO v2 HOME $140	RENASYS GO $96	RENASYS TOUCH $80	Pico $48	COLLAGENASE SANTYL $31	Other $50
Hydrofera LLC	$311 Hydrofera Blue $212	HYDROFERA BLUE READY - BORDER $83	CUTIMED SORBACT $16
Allergan Inc.	$256 VIBERZI $135	TEFLARO $102	NAMZARIC $19
Novo Nordisk Inc	$249 Tresiba $127	Victoza $86	Saxenda $36
Other	$1,013 ANORO $108	BASAGLAR $104	MOUNJARO $92	TANZEUM $56	ELLIPSYS VASCULAR ACCESS SYSTEM $56	Other $597