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Dr. Walter Matthew Ryan III, DO

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Specializes in: Adult Allergy & Immunology

Nova Southeastern University, College of Osteopathic Medicine (1993)

350 Nw 84th Avenue Suite 205
Plantation, FL 33324

(954) 472-4848

Dr. Walter Matthew Ryan III, DO is an allergist in Nashua, NH specializing in adult allergy & immunology. He graduated from Nova Southeastern University, College of Osteopathic Medicine in 1993 and has 33 years of experience. Dr. Walter Matthew Ryan III, DO is affiliated with Dartmouth-Hitchcock Medical Center (DHMC) and Dartmouth Health.

Office Locations

Dartmouth Health

2300 Southwood Drive
Nashua, NH 03063

(603) 577-4435

(603) 577-3438

open_in_new

350 Nw 84th Avenue Suite 205
Plantation, FL 33324

(954) 472-4848

(954) 472-8500

open_in_new

Noteworthy Medicare Patient Procedures Performed by Dr. Walter Matthew Ryan III, DO in 2023

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

Top 5%

By Volume:

hearing test

subcutaneous allergen immunotherapy

tympanometry

By Affordability:

allergen immunotherapy

immunotherapy

subcutaneous allergen immunotherapy

In 2023, among providers in related specialties within New Hampshire, Dr. Walter Matthew Ryan III, DO performed more hearing test, subcutaneous allergen immunotherapy (allergy shots), and tympanometry procedures for Medicare patients than 95% of them and he also had a list price for allergen immunotherapy, immunotherapy, and subcutaneous allergen immunotherapy (allergy shots) 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.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Walter Matthew Ryan III, DO treated as an allergist in Nashua, NH during 2012 were skin testing, allergy testing, minimally invasive procedures and immunotherapy.

Volume of procedures performed by Dr. Walter Matthew Ryan III, DO for Medicare patients.

allergy testing	3210
diagnostic procedures	14
doctor visit	299
ear procedures	14
immunotherapy	576
injections	576
minimally invasive procedures	1837
skin testing	3210

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Walter Matthew Ryan III, DO treated as an allergist in Nashua, NH during 2013 were skin testing, minimally invasive procedures, allergy testing and immunotherapy.

Volume of procedures performed by Dr. Walter Matthew Ryan III, DO for Medicare patients.

allergy testing	980
doctor visit	226
immunotherapy	631
injections	631
minimally invasive procedures	980
skin testing	980

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Walter Matthew Ryan III, DO.

**Gender**
Male	62
Female	132

**Ethnicity**
Non-Hispanic White	169
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	109
From 75 to 84	43
85 and over	21
Less than 65	21

Conditions of Medicare patients treated by Dr. Walter Matthew Ryan III, DO in 2013

Hypertension	61
High Cholesterol	62
Stroke	7
Ischemic Heart Disease	41
Depression	18
Chronic Kidney Disease	17
Asthma	40
Osteoperosis	16
Atrial Fibrilation	8
Heart Failure	13
Chronic Obstructive Pulmonary Disease	15
Diabetes	29
Dementia	0
Cancer	9

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Walter Matthew Ryan III, DO treated as an allergist in Nashua, NH during 2014 were skin testing, allergy testing, minimally invasive procedures and immunotherapy.

Volume of procedures performed by Dr. Walter Matthew Ryan III, DO for Medicare patients.

allergy testing	1917
doctor visit	195
immunotherapy	584
injections	584
minimally invasive procedures	1346
skin testing	1917

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Walter Matthew Ryan III, DO.

**Gender**
Male	53
Female	103

**Ethnicity**
Non-Hispanic White	125
Black	0
Hispanic	15
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	90
From 75 to 84	42
85 and over	12
Less than 65	12

Conditions of Medicare patients treated by Dr. Walter Matthew Ryan III, DO in 2014

Hypertension	65
High Cholesterol	68
Stroke	0
Ischemic Heart Disease	35
Depression	23
Chronic Kidney Disease	18
Asthma	35
Osteoperosis	16
Atrial Fibrilation	7
Heart Failure	0
Chronic Obstructive Pulmonary Disease	17
Diabetes	29
Dementia	0
Cancer	10

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Walter Matthew Ryan III, DO treated as an allergist in Nashua, NH during 2015 were skin testing, minimally invasive procedures, allergy testing and immunotherapy.

Volume of procedures performed by Dr. Walter Matthew Ryan III, DO for Medicare patients.

allergy testing	1281
doctor visit	149
immunotherapy	414
injections	414
minimally invasive procedures	1281
skin testing	1281

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Walter Matthew Ryan III, DO.

**Gender**
Male	88
Female	164

**Ethnicity**
Non-Hispanic White	214
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	134
From 75 to 84	68
85 and over	26
Less than 65	24

Conditions of Medicare patients treated by Dr. Walter Matthew Ryan III, DO in 2015

Hypertension	63
High Cholesterol	71
Stroke	0
Ischemic Heart Disease	38
Depression	24
Chronic Kidney Disease	20
Asthma	44
Osteoperosis	14
Atrial Fibrilation	9
Heart Failure	9
Chronic Obstructive Pulmonary Disease	21
Diabetes	26
Dementia	0
Cancer	11

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Walter Matthew Ryan III, DO treated as an allergist in Nashua, NH during 2016 were skin testing, allergy testing, minimally invasive procedures and immunotherapy.

Volume of procedures performed by Dr. Walter Matthew Ryan III, DO for Medicare patients.

allergy testing	1506
doctor visit	181
immunotherapy	375
injections	375
minimally invasive procedures	1121
skin testing	1506

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Walter Matthew Ryan III, DO.

**Gender**
Male	46
Female	74

**Ethnicity**
Non-Hispanic White	94
Black	11
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	68
From 75 to 84	31
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Walter Matthew Ryan III, DO in 2016

Hypertension	69
High Cholesterol	64
Stroke	0
Ischemic Heart Disease	34
Depression	26
Chronic Kidney Disease	28
Asthma	42
Osteoperosis	11
Atrial Fibrilation	13
Heart Failure	0
Chronic Obstructive Pulmonary Disease	29
Diabetes	28
Dementia	0
Cancer	0

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Walter Matthew Ryan III, DO treated as an allergist in Nashua, NH during 2017 were skin testing, allergy testing, minimally invasive procedures and immunotherapy.

Volume of procedures performed by Dr. Walter Matthew Ryan III, DO for Medicare patients.

allergy testing	1763
doctor visit	202
immunotherapy	446
injections	446
minimally invasive procedures	1319
pulmonary testing	13
skin testing	1763

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Walter Matthew Ryan III, DO.

**Gender**
Male	51
Female	73

**Ethnicity**
Non-Hispanic White	97
Black	0
Hispanic	11
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	74
From 75 to 84	29
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Walter Matthew Ryan III, DO in 2017

Hypertension	68
High Cholesterol	64
Stroke	0
Ischemic Heart Disease	35
Depression	31
Chronic Kidney Disease	23
Asthma	34
Osteoperosis	19
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	28
Diabetes	33
Dementia	12
Cancer	0

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Walter Matthew Ryan III, DO treated as an allergist in Nashua, NH during 2018 were skin testing, minimally invasive procedures, allergy testing and immunotherapy.

Volume of procedures performed by Dr. Walter Matthew Ryan III, DO for Medicare patients.

allergy testing	932
diagnostic procedures	13
doctor visit	245
ear procedures	13
immunotherapy	487
injections	487
minimally invasive procedures	932
skin testing	932

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Walter Matthew Ryan III, DO.

**Gender**
Male	60
Female	106

**Ethnicity**
Non-Hispanic White	129
Black	0
Hispanic	21
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	103
From 75 to 84	39
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Walter Matthew Ryan III, DO in 2018

Hypertension	73
High Cholesterol	70
Stroke	0
Ischemic Heart Disease	37
Depression	42
Chronic Kidney Disease	34
Asthma	42
Osteoperosis	16
Atrial Fibrilation	10
Heart Failure	11
Chronic Obstructive Pulmonary Disease	37
Diabetes	45
Dementia	22
Cancer	8

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Walter Matthew Ryan III, DO treated as an allergist in Nashua, NH during 2019 were skin testing, minimally invasive procedures, allergy testing and immunotherapy.

Volume of procedures performed by Dr. Walter Matthew Ryan III, DO for Medicare patients.

allergy testing	777
breathing treatment	13
doctor visit	181
immunotherapy	504
injections	504
minimally invasive procedures	777
skin testing	777

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Walter Matthew Ryan III, DO.

**Gender**
Male	44
Female	107

**Ethnicity**
Non-Hispanic White	121
Black	0
Hispanic	11
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	90
From 75 to 84	43
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Walter Matthew Ryan III, DO in 2019

Hypertension	66
High Cholesterol	75
Stroke	0
Ischemic Heart Disease	37
Depression	30
Chronic Kidney Disease	32
Asthma	34
Osteoperosis	19
Atrial Fibrilation	9
Heart Failure	11
Chronic Obstructive Pulmonary Disease	22
Diabetes	36
Dementia	14
Cancer	11

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Walter Matthew Ryan III, DO treated as an allergist in Nashua, NH during 2020 were immunotherapy, injections, ear procedures and diagnostic procedures.

Volume of procedures performed by Dr. Walter Matthew Ryan III, DO for Medicare patients.

diagnostic procedures	33
doctor visit	137
ear procedures	33
immunotherapy	359
injections	359

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Walter Matthew Ryan III, DO.

**Gender**
Male	46
Female	85

**Ethnicity**
Non-Hispanic White	104
Black	0
Hispanic	15
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	77
From 75 to 84	38
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Walter Matthew Ryan III, DO in 2020

Hypertension	65
High Cholesterol	69
Stroke	0
Ischemic Heart Disease	39
Depression	31
Chronic Kidney Disease	31
Asthma	33
Osteoperosis	21
Atrial Fibrilation	0
Heart Failure	0
Chronic Obstructive Pulmonary Disease	17
Diabetes	19
Dementia	17
Cancer	11

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Walter Matthew Ryan III, DO treated as an allergist in Nashua, NH during 2021 were immunotherapy, injections, ear procedures and diagnostic procedures.

Volume of procedures performed by Dr. Walter Matthew Ryan III, DO for Medicare patients.

diagnostic procedures	48
doctor visit	151
ear procedures	48
immunotherapy	371
injections	371

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Walter Matthew Ryan III, DO.

**Gender**
Male	42
Female	88

**Ethnicity**
Non-Hispanic White	105
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	69
From 75 to 84	38
85 and over	11
Less than 65	12

Conditions of Medicare patients treated by Dr. Walter Matthew Ryan III, DO in 2021

Hypertension	65
High Cholesterol	70
Stroke	0
Ischemic Heart Disease	38
Depression	30
Chronic Kidney Disease	29
Asthma	38
Osteoperosis	21
Atrial Fibrilation	11
Heart Failure	10
Chronic Obstructive Pulmonary Disease	16
Diabetes	23
Dementia	0
Cancer	10

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Walter Matthew Ryan III, DO treated as an allergist in Nashua, NH during 2022 were immunotherapy, injections, ear procedures and diagnostic procedures.

Volume of procedures performed by Dr. Walter Matthew Ryan III, DO for Medicare patients.

diagnostic procedures	32
doctor visit	134
ear procedures	32
immunotherapy	430
injections	430

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Walter Matthew Ryan III, DO.

**Gender**
Male	44
Female	97

**Ethnicity**
Non-Hispanic White	110
Black	0
Hispanic	14
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	86
From 75 to 84	38
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Walter Matthew Ryan III, DO in 2022

Hypertension	72
High Cholesterol	75
Stroke	0
Ischemic Heart Disease	28
Depression	23
Chronic Kidney Disease	22
Asthma	43
Osteoperosis	25
Atrial Fibrilation	11
Heart Failure	12
Chronic Obstructive Pulmonary Disease	15
Diabetes	25
Dementia	0
Cancer	12

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. Walter Matthew Ryan III, DO for Medicare patients.

The highest averages for the top procedures that Dr. Walter Matthew Ryan III, DO treated as an allergist in Nashua, NH were skin testing, allergy testing, minimally invasive procedures and immunotherapy.

allergy testing	1545
diagnostic procedures	28
doctor visit	190
ear procedures	28
immunotherapy	470
injections	470
minimally invasive procedures	1199
pulmonary testing	13
skin testing	1545

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. Walter Matthew Ryan III, DO.

**Gender**
Male	48
Female	93

**Ethnicity**
Black / African American	1
Asian / Pacific Islander	0
Non-Hispanic White	115
Native American / Alaskan Native	0
Hispanic	7
Other	0

**Age**
75 to 84	37
85 and over	6
Less than 65	6
65 to 74	81

Average of Total of Conditions of Medicare patients treated by Dr. Walter Matthew Ryan III, DO From 2012 - 2022

The highest averages of the most common conditions of Medicare patients that Dr. Walter Matthew Ryan III, DO treated were high cholesterol, hypertension, asthma and ischemic heart disease.

Hypertension	60
High Cholesterol	62
Stroke	0
Ischemic Heart Disease	32
Depression	25
Chronic Kidney Disease	23
Asthma	35
Osteoporosis	16
Heart Failure	6
Chronic Obstructive Pulmonary Disease	19
Diabetes	26
Atrial Fibrillation	7
Dementia	5
Cancer	7

Education & Training

Dr. Walter Matthew Ryan III, DO graduated from Nova Southeastern University, College of Osteopathic Medicine in 1993. He completed residency at UMass Memorial Medical Center. He is certified by the Board certification: Allergy and Immunology and has a state license in New Hampshire.

Medical School: Nova Southeastern University, College of Osteopathic Medicine (1993)

Residency: UMass Memorial Medical Center (1996)

Board Certification: Board certification: Allergy and Immunology

Licensed In: New Hampshire

Affiliations & Hospitals

Dr. Walter Matthew Ryan III, DO is associated with these hospitals and organizations:

Dartmouth-Hitchcock Medical Center (DHMC)

Dartmouth Health

Ratings & Reviews

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General Payments

These charts describe general payments received by Dr. Walter Matthew Ryan III, DO. Doctors may receive payments for a number of reasons, including meal compensation, travel compensation, and consulting.

**Payments by Company**
GlaxoSmithKline, LLC.	$2,535 TRELEGY ELLIPTA $1,033	NUCALA $687	BREO $480	BREO ELLIPTA $118	ARNUITY $91	Other $126
Pharming Healthcare, Inc.	$2,417 Ruconest $2,417
AstraZeneca Pharmaceuticals LP	$1,545 SYMBICORT $747	TEZSPIRE $282	FASENRA $218	BREZTRI $151	FARXIGA $81	Other $68
Boehringer Ingelheim Pharmaceuticals, Inc.	$580 SPIRIVA RESPIMAT $317	STIOLTO $102	OFEV $77	Spiriva $45	STIOLTO RESPIMAT $27	Other $11
Pfizer Inc.	$485 EUCRISA $273	PAXLOVID $107	PREVNAR - 13 $47	CUTAQUIG $36	LITFULO $22
Other	$3,909 XOLAIR $406	DUPIXENT $381	Xhance $256	HYQVIA $242	TAKHZYRO $217	Other $2,407

**Types of Payments**
Food and Beverage	$9,108
Honoraria	$2,250
Education	$88
Gift	$25

Biography

Dr. Walter Ryan is a medical specialist in adult allergy & immunology. He is professionally affiliated with Dartmouth-Hitchcock Medical Center (DHMC). Before completing his residency at UMass Memorial Medical Center, Dr. Ryan attended medical school at Nova Southeastern University, College of Osteopathic Medicine.

Select Year:

Dr. Walter Matthew Ryan III, DO

Office Locations

Noteworthy Medicare Patient Procedures Performed by Dr. Walter Matthew Ryan III, DO in 2023

By Volume:

By Affordability:

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. Walter Matthew Ryan III, DO in 2013

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

2014 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Walter Matthew Ryan III, DO in 2014

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

2015 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Walter Matthew Ryan III, DO in 2015

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

2016 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Walter Matthew Ryan III, DO in 2016

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

2017 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Walter Matthew Ryan III, DO in 2017

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

2018 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Walter Matthew Ryan III, DO in 2018

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

2019 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Walter Matthew Ryan III, DO in 2019

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

2020 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Walter Matthew Ryan III, DO in 2020

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

2021 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Walter Matthew Ryan III, DO in 2021

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

2022 Medicare Patient Data

Conditions of Medicare patients treated by Dr. Walter Matthew Ryan III, DO 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. Walter Matthew Ryan III, DO From 2012 - 2022

Education & Training

Affiliations & Hospitals

Ratings & Reviews

General Payments

Biography

Other Providers in Nashua, NH