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Dr. Rex L. Mahnensmith, MD

(1 Rating)

Specializes in: Adult Nephrology

80 Phoenix Avenue
Waterbury, CT 06702

(203) 756-8021

Dr. Rex L. Mahnensmith, MD is a nephrologist in Waterbury, CT specializing in adult nephrology.

Office Locations

80 Phoenix Avenue
Waterbury, CT 06702

(203) 756-8021

(203) 596-9038

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Noteworthy Medicare Patient Procedures Performed by Dr. Rex L. Mahnensmith, MD in 2024

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

Top 5%

By Volume:

mental health screening

By Affordability:

preventive care

In 2024, among providers in related specialties within Connecticut, Dr. Rex L. Mahnensmith, MD performed more mental health screening procedures for Medicare patients than 95% of them and he also had a list price for preventive care that was lower than the list prices billed to Medicare by 95% of them. 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.

Top 25%

By Affordability:

screening test

In 2012, Dr. Rex L. Mahnensmith, MD had a list price for screening test 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. Rex L. Mahnensmith, MD treated as a nephrologist in Waterbury, CT during 2012 were hospital care, inpatient care, dialysis and hemofiltration.

Volume of procedures performed by Dr. Rex L. Mahnensmith, MD for Medicare patients.

dialysis	172
doctor visit	378
hemofiltration	36
hospital care	332
inpatient care	332

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Rex L. Mahnensmith, MD treated as a nephrologist in Waterbury, CT during 2013 were hospital care, inpatient care and dialysis.

Volume of procedures performed by Dr. Rex L. Mahnensmith, MD for Medicare patients.

dialysis	91
doctor visit	398
hospital care	202
inpatient care	202

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Rex L. Mahnensmith, MD.

**Gender**
Male	134
Female	129

**Ethnicity**
Non-Hispanic White	145
Black	86
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	90
From 75 to 84	43
85 and over	14
Less than 65	116

Conditions of Medicare patients treated by Dr. Rex L. Mahnensmith, MD in 2013

Hypertension	75
High Cholesterol	44
Stroke	7
Ischemic Heart Disease	47
Depression	28
Chronic Kidney Disease	75
Asthma	13
Osteoperosis	5
Atrial Fibrilation	15
Heart Failure	49
Chronic Obstructive Pulmonary Disease	22
Diabetes	54
Dementia	11
Cancer	11

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Rex L. Mahnensmith, MD treated as a nephrologist in Waterbury, CT during 2014 were nursing home care.

Volume of procedures performed by Dr. Rex L. Mahnensmith, MD for Medicare patients.

nursing home care	234

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Rex L. Mahnensmith, MD.

**Gender**
Male	30
Female	50

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

**Age**
From 65 to 74	0
From 75 to 84	21
85 and over	36
Less than 65	0

Conditions of Medicare patients treated by Dr. Rex L. Mahnensmith, MD in 2014

Hypertension	75
High Cholesterol	65
Stroke	18
Ischemic Heart Disease	55
Depression	41
Chronic Kidney Disease	48
Asthma	14
Osteoperosis	0
Atrial Fibrilation	28
Heart Failure	54
Chronic Obstructive Pulmonary Disease	35
Diabetes	43
Dementia	48
Cancer	18

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Rex L. Mahnensmith, MD treated as a nephrologist in Waterbury, CT during 2015 were nursing home care.

Volume of procedures performed by Dr. Rex L. Mahnensmith, MD for Medicare patients.

nursing home care	849

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Rex L. Mahnensmith, MD.

**Gender**
Male	182
Female	234

**Ethnicity**
Non-Hispanic White	334
Black	54
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	58
From 75 to 84	144
85 and over	186
Less than 65	28

Conditions of Medicare patients treated by Dr. Rex L. Mahnensmith, MD in 2015

Hypertension	75
High Cholesterol	53
Stroke	19
Ischemic Heart Disease	50
Depression	44
Chronic Kidney Disease	56
Asthma	14
Osteoperosis	9
Atrial Fibrilation	32
Heart Failure	49
Chronic Obstructive Pulmonary Disease	25
Diabetes	43
Dementia	72
Cancer	16

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

Volume of procedures performed by Dr. Rex L. Mahnensmith, MD for Medicare patients.

doctor visit	81

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Rex L. Mahnensmith, MD.

**Gender**
Male	29
Female	29

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

**Age**
From 65 to 74	18
From 75 to 84	0
85 and over	0
Less than 65	25

Conditions of Medicare patients treated by Dr. Rex L. Mahnensmith, MD in 2018

Hypertension	66
High Cholesterol	45
Stroke	0
Ischemic Heart Disease	28
Depression	43
Chronic Kidney Disease	21
Asthma	0
Osteoperosis	0
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	21
Diabetes	29
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Rex L. Mahnensmith, MD treated as a nephrologist in Waterbury, CT during 2019 were skin testing, minimally invasive procedures, allergy testing and lab tests.

Volume of procedures performed by Dr. Rex L. Mahnensmith, MD for Medicare patients.

allergy testing	2280
blood draw	18
breathing treatment	28
chronic care	35
doctor visit	1650
ear procedures	26
lab tests	141
minimally invasive procedures	2280
preventive care	17
skin testing	2280
vaccines	17

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Rex L. Mahnensmith, MD.

**Gender**
Male	411
Female	671

**Ethnicity**
Non-Hispanic White	858
Black	78
Hispanic	95
Asian	15
Other	36
Native American	0

**Age**
From 65 to 74	460
From 75 to 84	258
85 and over	101
Less than 65	263

Conditions of Medicare patients treated by Dr. Rex L. Mahnensmith, MD in 2019

Hypertension	57
High Cholesterol	52
Stroke	3
Ischemic Heart Disease	22
Depression	23
Chronic Kidney Disease	20
Asthma	11
Osteoperosis	7
Atrial Fibrilation	7
Heart Failure	10
Chronic Obstructive Pulmonary Disease	12
Diabetes	22
Dementia	6
Cancer	10

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Rex L. Mahnensmith, MD treated as a nephrologist in Waterbury, CT during 2020 were allergy testing, skin testing, minimally invasive procedures and lab tests.

Volume of procedures performed by Dr. Rex L. Mahnensmith, MD for Medicare patients.

airway management	54
allergy testing	720
blood draw	35
breathing treatment	26
chronic care	17
doctor visit	13353
ear procedures	36
lab tests	186
minimally invasive procedures	720
minor procedures	13
preventive care	21
pulmonary testing	98
skin testing	720
vaccines	21
wound repair (e.g. stitches)	13

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Rex L. Mahnensmith, MD.

**Gender**
Male	3091
Female	4169

**Ethnicity**
Non-Hispanic White	5891
Black	355
Hispanic	594
Asian	0
Other	325
Native American	0

**Age**
From 65 to 74	3523
From 75 to 84	1849
85 and over	860
Less than 65	1028

Conditions of Medicare patients treated by Dr. Rex L. Mahnensmith, MD in 2020

Hypertension	53
High Cholesterol	54
Stroke	3
Ischemic Heart Disease	24
Depression	21
Chronic Kidney Disease	20
Asthma	7
Osteoperosis	9
Atrial Fibrilation	8
Heart Failure	11
Chronic Obstructive Pulmonary Disease	10
Diabetes	21
Dementia	8
Cancer	10

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Rex L. Mahnensmith, MD treated as a nephrologist in Waterbury, CT during 2021 were lab tests, preventive care, ear procedures and blood draw.

Volume of procedures performed by Dr. Rex L. Mahnensmith, MD for Medicare patients.

blood draw	26
breathing treatment	21
doctor visit	10832
ear procedures	42
lab tests	341
minor procedures	23
preventive care	114
vaccines	21
wound repair (e.g. stitches)	23

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Rex L. Mahnensmith, MD.

**Gender**
Male	2863
Female	3973

**Ethnicity**
Non-Hispanic White	5409
Black	368
Hispanic	638
Asian	0
Other	311
Native American	0

**Age**
From 65 to 74	3349
From 75 to 84	1648
85 and over	681
Less than 65	1158

Conditions of Medicare patients treated by Dr. Rex L. Mahnensmith, MD in 2021

Hypertension	55
High Cholesterol	57
Stroke	3
Ischemic Heart Disease	23
Depression	21
Chronic Kidney Disease	20
Asthma	8
Osteoperosis	10
Atrial Fibrilation	8
Heart Failure	10
Chronic Obstructive Pulmonary Disease	8
Diabetes	22
Dementia	7
Cancer	10

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Rex L. Mahnensmith, MD treated as a nephrologist in Waterbury, CT during 2022 were lab tests, blood draw, preventive care and ear procedures.

Volume of procedures performed by Dr. Rex L. Mahnensmith, MD for Medicare patients.

blood draw	97
breathing treatment	13
doctor visit	6814
ear procedures	55
lab tests	603
minor procedures	19
preventive care	78
vaccines	17
wound repair (e.g. stitches)	19

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Rex L. Mahnensmith, MD.

**Gender**
Male	1993
Female	2778

**Ethnicity**
Non-Hispanic White	3655
Black	327
Hispanic	456
Asian	0
Other	217
Native American	0

**Age**
From 65 to 74	2098
From 75 to 84	1325
85 and over	388
Less than 65	960

Conditions of Medicare patients treated by Dr. Rex L. Mahnensmith, MD in 2022

Hypertension	62
High Cholesterol	70
Stroke	5
Ischemic Heart Disease	18
Depression	18
Chronic Kidney Disease	13
Asthma	12
Osteoperosis	14
Atrial Fibrilation	12
Heart Failure	9
Chronic Obstructive Pulmonary Disease	11
Diabetes	24
Dementia	4
Cancer	13

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

The top procedures that Dr. Rex L. Mahnensmith, MD treated as a nephrologist in Waterbury, CT during 2023 were lab tests and blood draw.

Volume of procedures performed by Dr. Rex L. Mahnensmith, MD for Medicare patients.

blood draw	16
doctor visit	600
lab tests	31

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. Rex L. Mahnensmith, MD.

**Gender**
Male	209
Female	298

**Ethnicity**
Non-Hispanic White	381
Black	59
Hispanic	37
Asian	0
Other	19
Native American	0

**Age**
From 65 to 74	189
From 75 to 84	139
85 and over	41
Less than 65	138

Conditions of Medicare patients treated by Dr. Rex L. Mahnensmith, MD in 2023

Hypertension	63
High Cholesterol	70
Stroke	5
Ischemic Heart Disease	18
Depression	20
Chronic Kidney Disease	15
Asthma	12
Osteoperosis	14
Atrial Fibrilation	12
Heart Failure	10
Chronic Obstructive Pulmonary Disease	12
Diabetes	25
Dementia	6
Cancer	12

Medicare Procedure and Patient Information

2024 Medicare Procedure Volume

The top procedures that Dr. Rex L. Mahnensmith, MD treated as a nephrologist in Waterbury, CT during 2024 were preventive care.

Volume of procedures performed by Dr. Rex L. Mahnensmith, MD for Medicare patients.

doctor visit	93
preventive care	22

2024 Medicare Patient Data

Information about Medicare patients treated by Dr. Rex L. Mahnensmith, MD.

**Gender**
Male	36
Female	47

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

**Age**
From 65 to 74	29
From 75 to 84	21
85 and over	11
Less than 65	22

Conditions of Medicare patients treated by Dr. Rex L. Mahnensmith, MD in 2024

Hypertension	61
High Cholesterol	60
Stroke	0
Ischemic Heart Disease	20
Depression	19
Chronic Kidney Disease	23
Asthma	16
Osteoperosis	14
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	0
Diabetes	27
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2024

Volume of procedures performed by Dr. Rex L. Mahnensmith, MD for Medicare patients.

The highest averages for the top procedures that Dr. Rex L. Mahnensmith, MD treated as a nephrologist in Waterbury, CT were allergy testing, minimally invasive procedures, skin testing and nursing home care.

airway management	54
allergy testing	1500
blood draw	38
chronic care	26
dialysis	131
doctor visit	3799
ear procedures	39
hemofiltration	36
hospital care	267
inpatient care	267
lab tests	260
minimally invasive procedures	1500
minor procedures	18
nursing home care	541
preventive care	50
pulmonary testing	98
skin testing	1500
vaccines	19
wound repair (e.g. stitches)	18

Average Medicare Patient Data From 2012 - 2024

Information about Medicare patients treated by Dr. Rex L. Mahnensmith, MD.

**Gender**
Female	1125
Male	816

**Ethnicity**
Black / African American	120
Asian / Pacific Islander	1
Non-Hispanic White	1530
Native American / Alaskan Native	0
Hispanic	165
Other	82

**Age**
85 and over	210
75 to 84	495
Less than 65	339
65 to 74	892

Average of Total of Conditions of Medicare patients treated by Dr. Rex L. Mahnensmith, MD From 2012 - 2024

The highest averages of the most common conditions of Medicare patients that Dr. Rex L. Mahnensmith, MD treated were hypertension, high cholesterol, chronic kidney disease and diabetes.

Hypertension	58
High Cholesterol	51
Stroke	5
Ischemic Heart Disease	27
Depression	25
Chronic Kidney Disease	28
Asthma	9
Osteoporosis	7
Heart Failure	18
Chronic Obstructive Pulmonary Disease	14
Diabetes	28
Atrial Fibrillation	11
Cancer	9
Dementia	14

Education & Training

He has a state license in Connecticut.

Licensed In: Connecticut

Ratings & Reviews

Dr. Rex L. Mahnensmith, MD has a high overall rating with an average of 4.0 out of 5 stars based on 1 ratings. We collect ratings and reviews of Dr. Rex L. Mahnensmith, MD from all over the web to help you find the right in Waterbury, CT.

Overall Rating

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General Payments

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

**Payments by Company**
IBSA Pharma Inc.	$750 Flector $750
AstraZeneca Pharmaceuticals LP	$438 AIRSUPRA $180	BREZTRI $168	FARXIGA $56	MOVANTIK $11	$22
GlaxoSmithKline, LLC.	$287 ANORO $172	BREO $96	TANZEUM $20
SANOFI-AVENTIS U.S. LLC	$268 TOUJEO $116	DIABETES - DISEASE $70	LANTUS $12	$70
Pfizer Inc.	$220 NURTEC ODT $83	ZAVZPRET $54	VYNDAQEL $34	ABRYSVO $21	CHANTIX $15	Other $12
Other	$1,312 INVOKAMET $108	VRAYLAR $103	XIFAXAN $72	SPIRIVA RESPIMAT $66	LINZESS $63	Other $900

**Types of Payments**
Food and Beverage	$2,378
Consulting Fee	$750
Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program	$140
Education	$7

Biography

Dr. Rex Mahnensmith, who practices in Waterbury, CT, is a medical specialist in adult nephrology. Dr. Mahnensmith has obtained a license to practice in Connecticut.