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Dr. Chia-Wai D. Chang, MD

(David Chang, MD)

(No ratings)

Specializes in: General Practice, Head & Neck Plastic Surgery and Otolaryngology (Ear Nose and Throat)

812 N Keene Street
Columbia, MO 65201

(573) 817-3000

Dr. Chia-Wai D. Chang, MD is a general practitioner in Columbia, MO specializing in general practice, head & neck plastic surgery and otolaryngology (ear nose and throat). Dr. Chia-Wai D. Chang, MD is affiliated with ENT and Allergy Center.

Office Locations

812 N Keene Street
Columbia, MO 65201

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In The News

“When Pfizer-BioNTech and Moderna revealed adverse events in their trials, concerns about Bell's palsy and the vaccines grew, observed C. W. David Chang, MD, of the University of Missouri in...”—"Bell's Palsy More Likely After COVID Infection Than After Vaccine", MedPage Today, June 2021

“"Our numbers in the study are not huge, especially if you look in terms of other injuries," said Dr. C.W. David Chang, associate professor of clinical otolaryngology at the University of Missouri,...”—"The hidden danger of grilling out", CNN, April 2016

Noteworthy Medicare Patient Procedures Performed by Dr. Chia-Wai D. Chang, MD in 2023

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

Top 5%

By Volume:

subcutaneous allergen immunotherapy

In 2023, Dr. Chia-Wai D. Chang, MD performed more subcutaneous allergen immunotherapy (allergy shots) procedures for Medicare patients than 95% of providers in related specialties within Missouri.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Chia-Wai D. Chang, MD treated as a general practitioner in Columbia, MO during 2012 were minimally invasive procedures, immunotherapy, injections and laryngeal (voice box) procedures.

Volume of procedures performed by Dr. Chia-Wai D. Chang, MD for Medicare patients.

debridement (removal of unhealthy tissue)	21
diagnostic procedures	21
doctor visit	302
excision	21
gynecologic procedures	21
immunotherapy	44
injections	44
laryngeal (voice box) procedures	31
minimally invasive procedures	52
nose surgery	21
removal of lesion (e.g. growth)	21

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Chia-Wai D. Chang, MD treated as a general practitioner in Columbia, MO during 2013 were skin testing, allergy testing, minimally invasive procedures and immunotherapy.

Volume of procedures performed by Dr. Chia-Wai D. Chang, MD for Medicare patients.

allergy testing	1189
doctor visit	259
immunotherapy	362
injections	362
laryngeal (voice box) procedures	27
minimally invasive procedures	1026
skin testing	1189

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Chia-Wai D. Chang, MD.

**Gender**
Male	107
Female	178

**Ethnicity**
Non-Hispanic White	249
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	104
From 75 to 84	44
85 and over	13
Less than 65	124

Conditions of Medicare patients treated by Dr. Chia-Wai D. Chang, MD in 2013

Hypertension	57
High Cholesterol	36
Stroke	0
Ischemic Heart Disease	22
Depression	36
Chronic Kidney Disease	13
Asthma	19
Osteoperosis	7
Atrial Fibrilation	5
Heart Failure	13
Chronic Obstructive Pulmonary Disease	18
Diabetes	29
Dementia	5
Cancer	6

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Chia-Wai D. Chang, MD treated as a general practitioner in Columbia, MO during 2014 were skin testing, allergy testing, minimally invasive procedures and immunotherapy.

Volume of procedures performed by Dr. Chia-Wai D. Chang, MD for Medicare patients.

allergy testing	1699
debridement (removal of unhealthy tissue)	17
diagnostic procedures	17
doctor visit	305
excision	17
gynecologic procedures	17
immunotherapy	419
injections	419
laryngeal (voice box) procedures	32
minimally invasive procedures	1378
nose surgery	17
removal of lesion (e.g. growth)	17
skin testing	1699

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Chia-Wai D. Chang, MD.

**Gender**
Male	130
Female	214

**Ethnicity**
Non-Hispanic White	314
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	139
From 75 to 84	49
85 and over	16
Less than 65	140

Conditions of Medicare patients treated by Dr. Chia-Wai D. Chang, MD in 2014

Hypertension	53
High Cholesterol	37
Stroke	3
Ischemic Heart Disease	25
Depression	33
Chronic Kidney Disease	12
Asthma	18
Osteoperosis	6
Atrial Fibrilation	6
Heart Failure	13
Chronic Obstructive Pulmonary Disease	17
Diabetes	25
Dementia	4
Cancer	6

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Chia-Wai D. Chang, MD treated as a general practitioner in Columbia, MO during 2015 were allergy testing, skin testing, minimally invasive procedures and immunotherapy.

Volume of procedures performed by Dr. Chia-Wai D. Chang, MD for Medicare patients.

allergy testing	1841
debridement (removal of unhealthy tissue)	16
diagnostic procedures	16
doctor visit	297
excision	16
gynecologic procedures	16
immunotherapy	420
injections	420
laryngeal (voice box) procedures	34
minimally invasive procedures	1467
nose surgery	16
nosebleed treatment	19
removal of lesion (e.g. growth)	16
skin testing	1841

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Chia-Wai D. Chang, MD.

**Gender**
Male	316
Female	454

**Ethnicity**
Non-Hispanic White	706
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	322
From 75 to 84	130
85 and over	30
Less than 65	288

Conditions of Medicare patients treated by Dr. Chia-Wai D. Chang, MD in 2015

Hypertension	60
High Cholesterol	43
Stroke	5
Ischemic Heart Disease	26
Depression	34
Chronic Kidney Disease	19
Asthma	21
Osteoperosis	7
Atrial Fibrilation	7
Heart Failure	12
Chronic Obstructive Pulmonary Disease	19
Diabetes	28
Dementia	5
Cancer	4

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Chia-Wai D. Chang, MD treated as a general practitioner in Columbia, MO during 2016 were skin testing, allergy testing, minimally invasive procedures and immunotherapy.

Volume of procedures performed by Dr. Chia-Wai D. Chang, MD for Medicare patients.

allergy testing	1438
doctor visit	267
immunotherapy	165
injections	165
laryngeal (voice box) procedures	37
minimally invasive procedures	1168
nose surgery	11
skin testing	1438

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Chia-Wai D. Chang, MD.

**Gender**
Male	119
Female	208

**Ethnicity**
Non-Hispanic White	294
Black	20
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	137
From 75 to 84	55
85 and over	12
Less than 65	123

Conditions of Medicare patients treated by Dr. Chia-Wai D. Chang, MD in 2016

Hypertension	58
High Cholesterol	39
Stroke	3
Ischemic Heart Disease	23
Depression	35
Chronic Kidney Disease	22
Asthma	29
Osteoperosis	7
Atrial Fibrilation	6
Heart Failure	13
Chronic Obstructive Pulmonary Disease	19
Diabetes	29
Dementia	5
Cancer	8

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Chia-Wai D. Chang, MD treated as a general practitioner in Columbia, MO during 2017 were skin testing, allergy testing, immunotherapy and injections.

Volume of procedures performed by Dr. Chia-Wai D. Chang, MD for Medicare patients.

allergy testing	180
debridement (removal of unhealthy tissue)	22
diagnostic procedures	22
doctor visit	187
excision	22
gynecologic procedures	22
immunotherapy	168
injections	168
laryngeal (voice box) procedures	20
minimally invasive procedures	42
nose surgery	22
removal of lesion (e.g. growth)	22
skin testing	180

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Chia-Wai D. Chang, MD.

**Gender**
Male	97
Female	175

**Ethnicity**
Non-Hispanic White	241
Black	18
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	114
From 75 to 84	36
85 and over	16
Less than 65	106

Conditions of Medicare patients treated by Dr. Chia-Wai D. Chang, MD in 2017

Hypertension	61
High Cholesterol	39
Stroke	5
Ischemic Heart Disease	26
Depression	34
Chronic Kidney Disease	28
Asthma	21
Osteoperosis	8
Atrial Fibrilation	7
Heart Failure	15
Chronic Obstructive Pulmonary Disease	21
Diabetes	33
Dementia	10
Cancer	7

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Chia-Wai D. Chang, MD treated as a general practitioner in Columbia, MO during 2018 were skin testing, allergy testing, minimally invasive procedures and immunotherapy.

Volume of procedures performed by Dr. Chia-Wai D. Chang, MD for Medicare patients.

allergy testing	2970
debridement (removal of unhealthy tissue)	15
diagnostic procedures	15
doctor visit	161
excision	15
gynecologic procedures	15
immunotherapy	72
injections	72
laryngeal (voice box) procedures	21
minimally invasive procedures	544
nose surgery	15
removal of lesion (e.g. growth)	15
skin testing	2970

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Chia-Wai D. Chang, MD.

**Gender**
Male	119
Female	163

**Ethnicity**
Non-Hispanic White	252
Black	19
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	110
From 75 to 84	50
85 and over	11
Less than 65	111

Conditions of Medicare patients treated by Dr. Chia-Wai D. Chang, MD in 2018

Hypertension	59
High Cholesterol	39
Stroke	0
Ischemic Heart Disease	24
Depression	39
Chronic Kidney Disease	24
Asthma	21
Osteoperosis	5
Atrial Fibrilation	9
Heart Failure	12
Chronic Obstructive Pulmonary Disease	17
Diabetes	30
Dementia	7
Cancer	6

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Chia-Wai D. Chang, MD treated as a general practitioner in Columbia, MO during 2019 were allergy testing, skin testing, minimally invasive procedures and immunotherapy.

Volume of procedures performed by Dr. Chia-Wai D. Chang, MD for Medicare patients.

allergy testing	2265
debridement (removal of unhealthy tissue)	14
diagnostic procedures	14
doctor visit	192
excision	14
gynecologic procedures	14
immunotherapy	109
injections	109
laryngeal (voice box) procedures	22
minimally invasive procedures	662
nose surgery	14
pulmonary testing	26
removal of lesion (e.g. growth)	14
skin testing	2265

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Chia-Wai D. Chang, MD.

**Gender**
Male	120
Female	176

**Ethnicity**
Non-Hispanic White	270
Black	14
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	137
From 75 to 84	50
85 and over	13
Less than 65	96

Conditions of Medicare patients treated by Dr. Chia-Wai D. Chang, MD in 2019

Hypertension	61
High Cholesterol	44
Stroke	5
Ischemic Heart Disease	27
Depression	39
Chronic Kidney Disease	24
Asthma	20
Osteoperosis	8
Atrial Fibrilation	8
Heart Failure	16
Chronic Obstructive Pulmonary Disease	17
Diabetes	30
Dementia	6
Cancer	8

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Chia-Wai D. Chang, MD treated as a general practitioner in Columbia, MO during 2020 were skin testing, allergy testing, minimally invasive procedures and immunotherapy.

Volume of procedures performed by Dr. Chia-Wai D. Chang, MD for Medicare patients.

allergy testing	1419
doctor visit	173
immunotherapy	240
injections	240
laryngeal (voice box) procedures	17
minimally invasive procedures	575
skin testing	1419

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Chia-Wai D. Chang, MD.

**Gender**
Male	112
Female	152

**Ethnicity**
Non-Hispanic White	231
Black	17
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	127
From 75 to 84	0
85 and over	0
Less than 65	87

Conditions of Medicare patients treated by Dr. Chia-Wai D. Chang, MD in 2020

Hypertension	63
High Cholesterol	48
Stroke	0
Ischemic Heart Disease	25
Depression	34
Chronic Kidney Disease	27
Asthma	21
Osteoperosis	6
Atrial Fibrilation	5
Heart Failure	11
Chronic Obstructive Pulmonary Disease	14
Diabetes	33
Dementia	5
Cancer	9

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Chia-Wai D. Chang, MD treated as a general practitioner in Columbia, MO during 2021 were skin testing, allergy testing, minimally invasive procedures and immunotherapy.

Volume of procedures performed by Dr. Chia-Wai D. Chang, MD for Medicare patients.

allergy testing	1707
doctor visit	168
immunotherapy	447
injections	447
laryngeal (voice box) procedures	15
minimally invasive procedures	699
pulmonary testing	152
skin testing	1707

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Chia-Wai D. Chang, MD.

**Gender**
Male	105
Female	179

**Ethnicity**
Non-Hispanic White	260
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	147
From 75 to 84	0
85 and over	0
Less than 65	80

Conditions of Medicare patients treated by Dr. Chia-Wai D. Chang, MD in 2021

Hypertension	58
High Cholesterol	40
Stroke	0
Ischemic Heart Disease	21
Depression	33
Chronic Kidney Disease	19
Asthma	22
Osteoperosis	12
Atrial Fibrilation	11
Heart Failure	15
Chronic Obstructive Pulmonary Disease	14
Diabetes	29
Dementia	7
Cancer	8

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Chia-Wai D. Chang, MD treated as a general practitioner in Columbia, MO during 2022 were immunotherapy, injections, minimally invasive procedures and laryngeal (voice box) procedures.

Volume of procedures performed by Dr. Chia-Wai D. Chang, MD for Medicare patients.

doctor visit	149
immunotherapy	274
injections	274
laryngeal (voice box) procedures	13
minimally invasive procedures	13

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Chia-Wai D. Chang, MD.

**Gender**
Male	110
Female	145

**Ethnicity**
Non-Hispanic White	231
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	133
From 75 to 84	58
85 and over	11
Less than 65	53

Conditions of Medicare patients treated by Dr. Chia-Wai D. Chang, MD in 2022

Hypertension	69
High Cholesterol	61
Stroke	8
Ischemic Heart Disease	20
Depression	28
Chronic Kidney Disease	15
Asthma	22
Osteoperosis	10
Atrial Fibrilation	16
Heart Failure	14
Chronic Obstructive Pulmonary Disease	16
Diabetes	31
Dementia	0
Cancer	11

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

The top procedures that Dr. Chia-Wai D. Chang, MD treated as a general practitioner in Columbia, MO during 2023 were immunotherapy, injections, minimally invasive procedures and laryngeal (voice box) procedures.

Volume of procedures performed by Dr. Chia-Wai D. Chang, MD for Medicare patients.

doctor visit	182
immunotherapy	130
injections	130
laryngeal (voice box) procedures	20
minimally invasive procedures	20

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. Chia-Wai D. Chang, MD.

**Gender**
Male	111
Female	125

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

**Age**
From 65 to 74	123
From 75 to 84	70
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Chia-Wai D. Chang, MD in 2023

Hypertension	72
High Cholesterol	65
Stroke	11
Ischemic Heart Disease	17
Depression	21
Chronic Kidney Disease	18
Asthma	16
Osteoperosis	15
Atrial Fibrilation	13
Heart Failure	11
Chronic Obstructive Pulmonary Disease	18
Diabetes	25
Dementia	0
Cancer	10

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2023

Volume of procedures performed by Dr. Chia-Wai D. Chang, MD for Medicare patients.

The highest averages for the top procedures that Dr. Chia-Wai D. Chang, MD treated as a general practitioner in Columbia, MO were allergy testing, skin testing, minimally invasive procedures and immunotherapy.

allergy testing	1634
debridement (removal of unhealthy tissue)	17
diagnostic procedures	17
doctor visit	220
excision	17
gynecologic procedures	17
immunotherapy	237
injections	237
laryngeal (voice box) procedures	24
minimally invasive procedures	637
nose surgery	16
nosebleed treatment	19
pulmonary testing	89
removal of lesion (e.g. growth)	17
skin testing	1634

Average Medicare Patient Data From 2012 - 2023

Information about Medicare patients treated by Dr. Chia-Wai D. Chang, MD.

**Gender**
Female	180
Male	120

**Ethnicity**
Black / African American	7
Asian / Pacific Islander	0
Non-Hispanic White	272
Hispanic	0
Native American / Alaskan Native	0
Other	0

**Age**
85 and over	10
75 to 84	45
Less than 65	100
65 to 74	132

Average of Total of Conditions of Medicare patients treated by Dr. Chia-Wai D. Chang, MD From 2012 - 2023

The highest averages of the most common conditions of Medicare patients that Dr. Chia-Wai D. Chang, MD treated were hypertension, high cholesterol, depression and diabetes.

Hypertension	55
High Cholesterol	40
Stroke	3
Ischemic Heart Disease	21
Depression	30
Chronic Kidney Disease	18
Asthma	19
Osteoporosis	7
Heart Failure	12
Chronic Obstructive Pulmonary Disease	15
Diabetes	26
Atrial Fibrillation	7
Dementia	4
Cancer	6

Education & Training

He has a state license in Missouri.

Licensed In: Missouri

Affiliations & Hospitals

Dr. Chia-Wai D. Chang, MD is associated with these hospitals and organizations:

ENT and Allergy Center

Ratings & Reviews

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General Payments

These charts describe general payments received by Dr. Chia-Wai D. Chang, MD. Doctors may receive payments for a number of reasons, including meal compensation, travel compensation, and consulting.

**Payments by Company**
Inspire Medical Systems, Inc.	$830 Inspire Upper Airway Stimulation System $509	Inspire $322
Takeda Pharmaceuticals U.S.A., Inc.	$66 CUVITRU $31	HYQVIA $21	TAKHZYRO $14
Stryker Corporation	$65 NA $53	MEDPOR $12
Regeneron Healthcare Solutions, Inc.	$47 DUPIXENT $47
Ambu Inc.	$43 $43
Other	$159 Xembify $33	Orladeyo $23	RHINAER $20	SINUVA $18	Propel $16	Other $49

**Types of Payments**
Food and Beverage	$701
Travel and Lodging	$509

Biography

Dr. Chia-Wai Chang specializes in general practice, otolaryngology (ear, nose, and throat), and head & neck plastic surgery and practices in Columbia, MO. He graduated from the University of Kansas School of Medicine.