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Home > AZ Providers > Spine Surgeons

Dr. Michael S. Chang, MD

(82 Ratings)

Specializes in: Spine Surgery and Orthopedics/Orthopedic Surgery

Harvard Medical School

1462 S. Dobson Road Suite 201
Mesa, AZ 85202

(480) 962-0071

Dr. Michael S. Chang, MD is a spine surgeon in Tempe, AZ specializing in spine surgery and orthopedics/orthopedic surgery. He graduated from Harvard Medical School. Dr. Michael S. Chang, MD is affiliated with Deer Valley Medical Center, Scottsdale Thompson Peak Medical Center, Scottsdale Shea Medical Center, Scottsdale Osborn Medical Center, Honor Health, Sonoran Crossing Medical Center and John C Lincoln Medical Center.

Office Locations

1255 W. Rio Salado Parkway Suite 107
Tempe, AZ 85281

open_in_new

1462 S. Dobson Road Suite 201
Mesa, AZ 85202

(480) 962-0071

(480) 962-0590

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Noteworthy Medicare Patient Procedures Performed by Dr. Michael S. Chang, MD in 2023

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

Top 5%

By Volume:

posterior column osteotomy

spinal osteotomy

thoracic osteotomy

By Affordability:

thoracic osteotomy

thoracic spine surgery

In 2023, among providers in related specialties within Arizona, Dr. Michael S. Chang, MD performed more posterior column osteotomy, spinal osteotomy, and thoracic osteotomy procedures for Medicare patients than 95% of them and he also had a list price for thoracic osteotomy, and thoracic spine surgery 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 Volume:

spine surgery procedures

By Affordability:

decompression surgery

lumbar decompression

nerve decompression surgery

nerve procedures

nerve surgery

spinal decompression

spinal decompression surgery

In 2012, among providers in related specialties within Arizona, Dr. Michael S. Chang, MD performed more spine surgery procedures procedures for Medicare patients than 75% of them and he also had a list price for decompression surgery, lumbar decompression, nerve decompression surgery, nerve procedures, nerve surgery, spinal decompression, and spinal decompression surgery that was lower than the list prices billed to Medicare by 75% 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. Michael S. Chang, MD treated as a spine surgeon in Tempe, AZ during 2012 were spinal procedures, X-rays, bone surgery and nerve procedures.

Volume of procedures performed by Dr. Michael S. Chang, MD for Medicare patients.

arthrodesis (bone fusion surgery)	11
bone surgery	25
decompression surgery	23
doctor visit	587
nerve procedures	23
spinal procedures	467
X-rays	367

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Michael S. Chang, MD treated as a spine surgeon in Tempe, AZ during 2013 were spinal procedures, X-rays, nerve procedures and decompression surgery.

Volume of procedures performed by Dr. Michael S. Chang, MD for Medicare patients.

arthrodesis (bone fusion surgery)	26
bone surgery	42
decompression surgery	50
doctor visit	752
nerve procedures	50
revision surgery	11
spinal procedures	606
X-rays	451

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Michael S. Chang, MD.

**Gender**
Male	148
Female	265

**Ethnicity**
Non-Hispanic White	382
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	211
From 75 to 84	130
85 and over	29
Less than 65	43

Conditions of Medicare patients treated by Dr. Michael S. Chang, MD in 2013

Hypertension	66
High Cholesterol	55
Stroke	4
Ischemic Heart Disease	33
Depression	24
Chronic Kidney Disease	21
Asthma	8
Osteoperosis	15
Atrial Fibrilation	7
Heart Failure	9
Chronic Obstructive Pulmonary Disease	11
Diabetes	26
Dementia	6
Cancer	10

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Michael S. Chang, MD treated as a spine surgeon in Tempe, AZ during 2014 were spinal procedures, X-rays, nerve procedures and decompression surgery.

Volume of procedures performed by Dr. Michael S. Chang, MD for Medicare patients.

arthrodesis (bone fusion surgery)	18
bone surgery	12
decompression surgery	32
doctor visit	767
nerve procedures	32
spinal procedures	494
X-rays	391

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Michael S. Chang, MD.

**Gender**
Male	142
Female	257

**Ethnicity**
Non-Hispanic White	370
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	213
From 75 to 84	122
85 and over	24
Less than 65	40

Conditions of Medicare patients treated by Dr. Michael S. Chang, MD in 2014

Hypertension	67
High Cholesterol	52
Stroke	3
Ischemic Heart Disease	36
Depression	25
Chronic Kidney Disease	23
Asthma	11
Osteoperosis	15
Atrial Fibrilation	10
Heart Failure	10
Chronic Obstructive Pulmonary Disease	12
Diabetes	23
Dementia	8
Cancer	9

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Michael S. Chang, MD treated as a spine surgeon in Tempe, AZ during 2015 were spinal procedures, X-rays, arthrodesis (bone fusion surgery) and bone surgery.

Volume of procedures performed by Dr. Michael S. Chang, MD for Medicare patients.

arthrodesis (bone fusion surgery)	43
bone surgery	36
decompression surgery	35
doctor visit	696
nerve procedures	35
spinal procedures	551
X-rays	379

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Michael S. Chang, MD.

**Gender**
Male	262
Female	478

**Ethnicity**
Non-Hispanic White	680
Black	0
Hispanic	28
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	404
From 75 to 84	192
85 and over	60
Less than 65	84

Conditions of Medicare patients treated by Dr. Michael S. Chang, MD in 2015

Hypertension	62
High Cholesterol	57
Stroke	5
Ischemic Heart Disease	33
Depression	26
Chronic Kidney Disease	26
Asthma	12
Osteoperosis	19
Atrial Fibrilation	8
Heart Failure	10
Chronic Obstructive Pulmonary Disease	11
Diabetes	22
Dementia	7
Cancer	13

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Michael S. Chang, MD treated as a spine surgeon in Tempe, AZ during 2016 were spinal procedures, X-rays, arthrodesis (bone fusion surgery) and bone surgery.

Volume of procedures performed by Dr. Michael S. Chang, MD for Medicare patients.

arthrodesis (bone fusion surgery)	48
bone surgery	47
decompression surgery	34
doctor visit	694
nerve procedures	34
spinal procedures	423
X-rays	211

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Michael S. Chang, MD.

**Gender**
Male	127
Female	230

**Ethnicity**
Non-Hispanic White	321
Black	0
Hispanic	19
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	195
From 75 to 84	103
85 and over	22
Less than 65	37

Conditions of Medicare patients treated by Dr. Michael S. Chang, MD in 2016

Hypertension	68
High Cholesterol	61
Stroke	4
Ischemic Heart Disease	32
Depression	26
Chronic Kidney Disease	32
Asthma	17
Osteoperosis	19
Atrial Fibrilation	11
Heart Failure	11
Chronic Obstructive Pulmonary Disease	14
Diabetes	24
Dementia	7
Cancer	11

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Michael S. Chang, MD treated as a spine surgeon in Tempe, AZ during 2017 were spinal procedures, X-rays, arthrodesis (bone fusion surgery) and nerve procedures.

Volume of procedures performed by Dr. Michael S. Chang, MD for Medicare patients.

arthrodesis (bone fusion surgery)	40
bone surgery	34
decompression surgery	36
doctor visit	821
nerve procedures	36
spinal procedures	404
X-rays	229

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Michael S. Chang, MD.

**Gender**
Male	156
Female	264

**Ethnicity**
Non-Hispanic White	383
Black	0
Hispanic	17
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	243
From 75 to 84	132
85 and over	16
Less than 65	29

Conditions of Medicare patients treated by Dr. Michael S. Chang, MD in 2017

Hypertension	67
High Cholesterol	55
Stroke	5
Ischemic Heart Disease	33
Depression	27
Chronic Kidney Disease	30
Asthma	12
Osteoperosis	18
Atrial Fibrilation	10
Heart Failure	12
Chronic Obstructive Pulmonary Disease	12
Diabetes	23
Dementia	8
Cancer	10

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Michael S. Chang, MD treated as a spine surgeon in Tempe, AZ during 2018 were spinal procedures, X-rays, arthrodesis (bone fusion surgery) and bone surgery.

Volume of procedures performed by Dr. Michael S. Chang, MD for Medicare patients.

arthrodesis (bone fusion surgery)	46
bone surgery	41
decompression surgery	40
doctor visit	835
implant removal	14
nerve procedures	40
spinal procedures	423
X-rays	201

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Michael S. Chang, MD.

**Gender**
Male	168
Female	263

**Ethnicity**
Non-Hispanic White	385
Black	0
Hispanic	18
Asian	0
Other	11
Native American	0

**Age**
From 65 to 74	254
From 75 to 84	132
85 and over	19
Less than 65	26

Conditions of Medicare patients treated by Dr. Michael S. Chang, MD in 2018

Hypertension	68
High Cholesterol	65
Stroke	3
Ischemic Heart Disease	34
Depression	29
Chronic Kidney Disease	30
Asthma	11
Osteoperosis	19
Atrial Fibrilation	13
Heart Failure	13
Chronic Obstructive Pulmonary Disease	12
Diabetes	22
Dementia	9
Cancer	10

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Michael S. Chang, MD treated as a spine surgeon in Tempe, AZ during 2019 were spinal procedures, X-rays, arthrodesis (bone fusion surgery) and implant removal.

Volume of procedures performed by Dr. Michael S. Chang, MD for Medicare patients.

arthrodesis (bone fusion surgery)	39
bone surgery	21
decompression surgery	21
doctor visit	647
implant removal	25
nerve procedures	21
spinal procedures	352
X-rays	164

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Michael S. Chang, MD.

**Gender**
Male	139
Female	252

**Ethnicity**
Non-Hispanic White	352
Black	0
Hispanic	11
Asian	0
Other	12
Native American	0

**Age**
From 65 to 74	222
From 75 to 84	132
85 and over	15
Less than 65	22

Conditions of Medicare patients treated by Dr. Michael S. Chang, MD in 2019

Hypertension	68
High Cholesterol	60
Stroke	4
Ischemic Heart Disease	36
Depression	30
Chronic Kidney Disease	29
Asthma	10
Osteoperosis	23
Atrial Fibrilation	12
Heart Failure	11
Chronic Obstructive Pulmonary Disease	11
Diabetes	24
Dementia	10
Cancer	9

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Michael S. Chang, MD treated as a spine surgeon in Tempe, AZ during 2020 were spinal procedures, X-rays, bone surgery and arthrodesis (bone fusion surgery).

Volume of procedures performed by Dr. Michael S. Chang, MD for Medicare patients.

arthrodesis (bone fusion surgery)	28
bone surgery	36
decompression surgery	17
doctor visit	715
implant removal	12
nerve procedures	17
spinal procedures	355
X-rays	207

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Michael S. Chang, MD.

**Gender**
Male	146
Female	212

**Ethnicity**
Non-Hispanic White	327
Black	0
Hispanic	16
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	206
From 75 to 84	116
85 and over	13
Less than 65	23

Conditions of Medicare patients treated by Dr. Michael S. Chang, MD in 2020

Hypertension	68
High Cholesterol	61
Stroke	4
Ischemic Heart Disease	34
Depression	29
Chronic Kidney Disease	33
Asthma	9
Osteoperosis	16
Atrial Fibrilation	10
Heart Failure	13
Chronic Obstructive Pulmonary Disease	10
Diabetes	26
Dementia	8
Cancer	12

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Michael S. Chang, MD treated as a spine surgeon in Tempe, AZ during 2021 were spinal procedures, X-rays, bone surgery and nerve procedures.

Volume of procedures performed by Dr. Michael S. Chang, MD for Medicare patients.

arthrodesis (bone fusion surgery)	30
bone surgery	35
decompression surgery	31
doctor visit	787
nerve procedures	31
spinal procedures	369
X-rays	244

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Michael S. Chang, MD.

**Gender**
Male	157
Female	256

**Ethnicity**
Non-Hispanic White	371
Black	0
Hispanic	19
Asian	0
Other	12
Native American	0

**Age**
From 65 to 74	229
From 75 to 84	141
85 and over	24
Less than 65	19

Conditions of Medicare patients treated by Dr. Michael S. Chang, MD in 2021

Hypertension	71
High Cholesterol	65
Stroke	7
Ischemic Heart Disease	40
Depression	29
Chronic Kidney Disease	31
Asthma	9
Osteoperosis	20
Atrial Fibrilation	11
Heart Failure	12
Chronic Obstructive Pulmonary Disease	9
Diabetes	21
Dementia	8
Cancer	11

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Michael S. Chang, MD treated as a spine surgeon in Tempe, AZ during 2022 were spinal procedures, X-rays, bone surgery and arthrodesis (bone fusion surgery).

Volume of procedures performed by Dr. Michael S. Chang, MD for Medicare patients.

arthrodesis (bone fusion surgery)	30
bone surgery	42
decompression surgery	13
doctor visit	347
nerve procedures	13
spinal procedures	168
X-rays	52

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Michael S. Chang, MD.

**Gender**
Male	114
Female	154

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

**Age**
From 65 to 74	131
From 75 to 84	111
85 and over	12
Less than 65	14

Conditions of Medicare patients treated by Dr. Michael S. Chang, MD in 2022

Hypertension	75
High Cholesterol	75
Stroke	9
Ischemic Heart Disease	30
Depression	25
Chronic Kidney Disease	22
Asthma	12
Osteoperosis	32
Atrial Fibrilation	17
Heart Failure	9
Chronic Obstructive Pulmonary Disease	14
Diabetes	20
Dementia	6
Cancer	16

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

The top procedures that Dr. Michael S. Chang, MD treated as a spine surgeon in Tempe, AZ during 2023 were spinal procedures, bone surgery, arthrodesis (bone fusion surgery) and nerve procedures.

Volume of procedures performed by Dr. Michael S. Chang, MD for Medicare patients.

arthrodesis (bone fusion surgery)	23
bone surgery	52
decompression surgery	12
doctor visit	196
nerve procedures	12
spinal procedures	139

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. Michael S. Chang, MD.

**Gender**
Male	69
Female	131

**Ethnicity**
Non-Hispanic White	185
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	113
From 75 to 84	72
85 and over	0
Less than 65	0

Conditions of Medicare patients treated by Dr. Michael S. Chang, MD in 2023

Hypertension	75
High Cholesterol	75
Stroke	10
Ischemic Heart Disease	33
Depression	32
Chronic Kidney Disease	24
Asthma	12
Osteoperosis	34
Atrial Fibrilation	13
Heart Failure	9
Chronic Obstructive Pulmonary Disease	16
Diabetes	21
Dementia	7
Cancer	18

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2023

Volume of procedures performed by Dr. Michael S. Chang, MD for Medicare patients.

The highest averages for the top procedures that Dr. Michael S. Chang, MD treated as a spine surgeon in Tempe, AZ were spinal procedures, X-rays, bone surgery and arthrodesis (bone fusion surgery).

arthrodesis (bone fusion surgery)	31
bone surgery	35
decompression surgery	28
doctor visit	653
implant removal	17
nerve procedures	28
revision surgery	11
spinal procedures	395
X-rays	263

Average Medicare Patient Data From 2012 - 2023

Information about Medicare patients treated by Dr. Michael S. Chang, MD.

**Gender**
Female	230
Male	135

**Ethnicity**
Black / African American	0
Asian / Pacific Islander	0
Non-Hispanic White	333
Native American / Alaskan Native	0
Hispanic	10
Other	2

**Age**
75 to 84	115
85 and over	19
Less than 65	28
65 to 74	201

Average of Total of Conditions of Medicare patients treated by Dr. Michael S. Chang, MD From 2012 - 2023

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

Hypertension	62
High Cholesterol	56
Stroke	4
Ischemic Heart Disease	31
Depression	25
Chronic Kidney Disease	25
Asthma	10
Osteoporosis	19
Heart Failure	9
Chronic Obstructive Pulmonary Disease	11
Diabetes	21
Atrial Fibrillation	10
Dementia	7
Cancer	10

Education & Training

Dr. Michael S. Chang, MD graduated from Harvard Medical School. He completed residency at University of Iowa Hospitals & Clinics. He is certified by the American Board of Orthopaedic Surgery - Orthopaedic Surgery and has a state license in Missouri.

Medical School: Harvard Medical School

Residency: University of Iowa Hospitals & Clinics

Board Certification: American Board of Orthopaedic Surgery - Orthopaedic Surgery

Licensed In: Missouri

Affiliations & Hospitals

Dr. Michael S. Chang, MD is associated with these hospitals and organizations:

Deer Valley Medical Center

Scottsdale Thompson Peak Medical Center

Scottsdale Shea Medical Center

Scottsdale Osborn Medical Center

Honor Health

Sonoran Crossing Medical Center

John C Lincoln Medical Center

Insurance Information

Please note: Insurance information may change at any time, and the provider may accept your insurance plan even if it is not listed below. Please contact the provider's office to confirm that your insurance is accepted.

Dr. Michael S. Chang, MD appears to accept the following insurance providers: Medicare Advantage, Oscar, United Healthcare, Aetna Medicare, CIGNA Commercial, Aetna Commercial, BlueCross BlueShield Commercial, Arizona Complete Health, Mercy Care, BlueCross BlueShield Alliance, Banner Aetna and HonorHealth Employee Plan.

Insurance Accepted by Provider includes:

According to our sources, Dr. Michael S. Chang, MD accepts the following insurance providers:

Medicare Advantage

Oscar

United Healthcare

Aetna Medicare

CIGNA Commercial

Aetna Commercial

BlueCross BlueShield Commercial

Arizona Complete Health

Mercy Care

BlueCross BlueShield Alliance

Banner Aetna

HonorHealth Employee Plan

Ratings & Reviews

Dr. Michael S. Chang, MD has an exceptional overall rating with an average of 4.8 out of 5 stars based on 82 ratings. We collect ratings and reviews of Dr. Michael S. Chang, MD from all over the web to help you find the right in Tempe, AZ.

4.8

Overall Rating

(82 Ratings)

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General Payments

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

**Payments by Company**
Stryker Corporation	$581,949 Mako $121,422	XIA $71,189	THORACO-LUMBAR $66,910	EVEREST Spinal System $64,217	Tritanium $46,702	Other $211,509
MiRus, LLC	$111,740 EUROPA Pedicle Screw System $65,809	RIGEL 3DR Cervical Interbody $30,806	CYGNUS Anterior Cervical plate $15,125
Spine Wave, Inc.	$40,214 Spinal Implants $31,839	SALVO SPINE SYSTEM $3,874	Posterior Fusion $742	Spinal Implant $155	Spine Product $109	Other $3,495
CoreLink, LLC	$32,480 Spinal Implants $3,348	$29,131
Medtronic Sofamor Danek USA, Inc.	$23,403 Thoracolumbar - TL Therapies $19,847	Thoracolumbar Therapies $2,718	Cervical -Trauma Therapies $193	Biologics Therapies $192	Cervical and Trauma Therapies $165	Other $287
Other	$131,139 Spine $25,226	EXPEDIUM $15,952	INTERVERTEBRAL BODY FUSION DEVICE $12,984	NewBridge Laminoplasty Fixation System $8,400	Advanced Energy Hemostatic Device $7,205	Other $61,372

**Types of Payments**
Consulting Fee	$650,976
Royalty or License	$107,768
Travel and Lodging	$97,406
Food and Beverage	$31,320
Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program	$29,733
Other	$3,721

Research Payments

Dr. Michael S. Chang, MD has received 37 research payments totaling $104,201.

Ownership and Interest Payments

This table describes ownership payments received by Dr. Michael S. Chang, MD.

Ingeniumspine, LLC	2019	$426,971.00	Physician Covered Recipient	Approximate values provided. 20% ownership The initial investment was 75,000.00 in January 2017.
Ingeniumspine, LLC	2021	$360,000.00	Physician Covered Recipient	18% shareholder - 0 profits distributed
Ingeniumspine, LLC	2022	$341,967.80	Physician Covered Recipient	18% shareholder - 0 profits distributed
Ingeniumspine, LLC	2023	$311,722.80	Physician Covered Recipient	Not Exercised
Ingeniumspine, LLC	2020	$291,181.00	Physician Covered Recipient	18% ownership of company. $0.00 profits distributed in 2020.
WyCo Surgical Distribution LLC	2018	$162,161.36	Physician Covered Recipient	LLC member entitled to distributions
Ingeniumspine, LLC	2018	$100,000.00	Physician Covered Recipient	Inveastor
WyCo Surgical Distribution LLC	2024	$99,258.23	Physician Covered Recipient	LLC member entitled to distributions.
WyCo Surgical Distribution LLC	2019	$96,558.15	Physician Covered Recipient	LLC member entitled to distributions
WyCo Surgical Distribution LLC	2020	$79,753.40	Physician Covered Recipient	LLC member entitled to distributions
WyCo Surgical Distribution LLC	2022	$71,238.83	Physician Covered Recipient	LLC member entitled to distribution.
WyCo Surgical Distribution LLC	2021	$63,015.98	Physician Covered Recipient	LLC member entitled to distributions.
WyCo Surgical Distribution LLC	2023	$53,621.64	Physician Covered Recipient	LLC member entitled to distribution.

Biography

Dr. Michael Chang sees patients in Mesa, AZ and Tempe, AZ. His medical specialties are spine surgery and orthopedics/orthopedic surgery. Dr. Chang has a 5.0 out of 5 star average patient rating. His hospital/clinic affiliations include Scottsdale Osborn Medical Center, Scottsdale Shea Medical Center, and Deer Valley Medical Center. He takes Aetna Medicare, Cigna, and CIGNA Plans, in addition to other insurance carriers. He studied medicine at Harvard Medical School. Dr. Chang completed his residency training at the University of Iowa Hospitals & Clinics.