Dr. James Woojong Chang, DO
- Medicare services, 2024
- 1,091
- Medicare patients, 2024
- 393
- Part D claims, 2024
- 1,330
- MIPS score, 2024
- 92
- Hospital affiliations
- 2
- Practice address
- 1968 Peachtree Rd NW, Atlanta, GA 30309
- Practice phone
- Call (404) 605-5000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
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Dr. James Woojong Chang is a pulmonologist in Atlanta, Georgia
Dr. Chang practices at Piedmont Atlanta in Atlanta, Georgia, part of Piedmont Healthcare.
Dr. Chang's NPI, 1952661969, was assigned on May 23, 2012. Dr. Chang graduated from Philadelphia College of Osteopathic Medicine in 2012. Dr. Chang holds Georgia license 079863.
- NPI
- 1952661969NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0244534758
- NPI enumeration date
- May 23, 2012
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (404) 605-5000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 40
- Medical school graduation
- 2012
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. James Woojong Chang practices at Piedmont Atlanta in Atlanta, Georgia
Dr. Chang's primary practice is Piedmont Atlanta, at 1968 Peachtree Rd NW, Atlanta, GA 30309 in Fulton County. The practice phone is (404) 605-5000.
- Piedmont Atlanta1968 Peachtree Rd NW, Atlanta, GA 30309 · Fulton CountyPhone(404) 605-5000
Source: Dmand AI Affiliation Data
Dr. James Woojong Chang is affiliated with 4 sites of care and 2 medical groups
Dr. Chang's primary practice is Piedmont Atlanta in Atlanta, Georgia, part of Piedmont Healthcare. Dr. Chang is also affiliated with Piedmont Eastside Medical Center. The medical group on file is Piedmont Physicians Obstetrics and Gynecology of Jasper. Dmand AI also links Dr. Chang to 2 more group practices and clinics and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. James Woojong Chang's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chang practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Piedmont Atlanta | Available with a free account |
| +3 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dmand AI maps EHR vendors, IT decision makers and buying committees across Piedmont Healthcare and 6.2K+ hospitals, with verified contacts in the same login.
Dr. James Woojong Chang is one of 383 pulmonologists in Georgia
Pulmonary disease is Dr. Chang's primary specialty in the NPI Registry, under taxonomy code 207RP1001X. Dr. Chang is licensed in Georgia.
Specialties and state licenses
- Pulmonary disease, GeorgiaPrimary
Pulmonologists near Dr. Chang
Counts of pulmonologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. James Woojong Chang billed Medicare for 1,091 services in 2024
CMS data shows 1,091 Medicare services from Dr. Chang across 16 procedure codes in 2024, for 393 Medicare patients. Medicare paid $86,276 for them.
Dr. Chang's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 6342024: 6614%
- Tests and treatments
- 2023: 2872024: 24315%
- Imaging
- 2023: 1512024: 17415%
- Surgery
- 2023: 02024: 13
- Other services
- 2023: 122024: 0100%
Where Dr. Chang's Medicare services took place, 2024
- In an office68062%
- In a facility41138%
Dr. Chang compared with the Georgia median for pulmonologists, 2024
- Dr. Chang
- Georgia median
- Medicare services
- 1,091vs 82732% above
- Medicare patients
- 393vs 30429% above
- Part D claims
- 1,220vs 1,03018% above
Medians across 371 pulmonologists in Georgia with Dmand AI profiles that report each measure.
Dr. Chang's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Chang and other pulmonologists in Georgia.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. James Woojong Chang treated 393 Medicare patients in 2024, average age 74
CMS counts 393 Medicare patients who saw Dr. Chang in 2024. The largest group is 75 to 84, with 153 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 12% are also on Medicaid. Their average risk score is 2.30, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Chang's median patient age at 64, with 54% women.
Dr. Chang's Medicare patients by age, 2024
Dr. Chang's Medicare patients by sex, 2024
- Women20953%
- Men18447%
Chronic conditions among Dr. Chang's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis49%
- Ischemic heart disease48%
- COPD47%
- Heart failure43%
- Chronic kidney disease39%
- Diabetes39%
Share of Medicare patients with each condition. A patient can have several.
Dr. Chang's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 64
Patient panel by sex, all payers
- Women54%
- Men44%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. James Woojong Chang wrote 1,330 Medicare Part D claims in 2024
In 2024, Dr. Chang wrote 1,330 Medicare Part D claims for 257 patients. CMS names the drug for 1,220 of them, across 22 drugs with 11 or more claims each, at $580,323 in total drug cost. In 2023, CMS named 1,086 claims across 20 drugs.
Dr. Chang's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Chang's Part D claims, 2024
- Antibiotics6%80 of 1,330 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 1,0862024: 1,22012%
Drugs named by CMS: 22 in 2024, 20 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. James Woojong Chang scored 92 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 92 out of 100 for Dr. Chang for performance year 2024, reported through an alternative payment model (APM). Dr. Chang accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Chang's MIPS scores, performance year 2024
- 92of 100Final score
- 83.2of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. James Woojong Chang received $5,995 in industry payments from 2017 to 2025
CMS Open Payments shows 184 general payments to Dr. Chang from 38 drug and device companies from 2017 to 2025. Food and beverage make up the largest share, 73% of the total. Sanofi and Genzyme US Companies paid the most, $1,947.
General payments to Dr. Chang by program year, 2017 to 2025
General payments to Dr. Chang by kind, 2017 to 2025
- Food and beverage$4,38773%
- Consulting fees$1,51525%
- Education$922%
Companies that paid Dr. Chang the most, 2017 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. James Woojong Chang graduated from Philadelphia College of Osteopathic Medicine
Dr. Chang graduated from Philadelphia College of Osteopathic Medicine in 2012.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. James Woojong Chang's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. James Woojong Chang
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. James Woojong Chang's NPI number?
Dr. James Woojong Chang's NPI number is 1952661969. It was assigned on May 23, 2012, and it is active in the NPI Registry.
What kind of doctor is Dr. James Woojong Chang?
Dr. James Woojong Chang is a pulmonologist in Atlanta, Georgia. The primary specialty in the NPI Registry is Pulmonary Disease Physician (taxonomy code 207RP1001X).
Where does Dr. James Woojong Chang practice?
Dr. Chang practices at 1968 Peachtree Rd NW, Atlanta, GA 30309. Dr. Chang's primary practice is Piedmont Atlanta in Atlanta, Georgia, part of Piedmont Healthcare. Dmand AI also links Dr. Chang to 2 group practices and clinics and 1 medical group.
What is Dr. James Woojong Chang's office phone number?
The practice phone on file for Dr. Chang is (404) 605-5000.
What is Dr. James Woojong Chang's medical license number?
Dr. Chang holds Georgia license 079863.
Which hospitals is Dr. James Woojong Chang affiliated with?
Dr. Chang practices at Piedmont Atlanta in Atlanta, Georgia. Dr. Chang is also affiliated with Piedmont Eastside Medical Center.
What medical group is Dr. James Woojong Chang part of?
Dr. Chang is linked to Piedmont Physicians Obstetrics and Gynecology of Jasper. Dmand AI links Dr. Chang to 1 more medical group.
Does Dr. James Woojong Chang accept Medicare?
Yes. CMS data shows Dr. Chang billed Medicare for 1,091 services in 2024, and Dr. Chang accepts Medicare assignment.
What is Dr. James Woojong Chang's MIPS score?
Dr. Chang's MIPS final score for performance year 2024 is 92 out of 100, reported through an alternative payment model (APM).
How many Medicare patients does Dr. James Woojong Chang see?
CMS counts 393 Medicare patients who saw Dr. Chang in 2024, with an average age of 74.
Show 5 more questionsShow fewer questions
What services does Dr. James Woojong Chang bill to Medicare?
In 2024, Dr. Chang's most billed Medicare services were hospital inpatient care (99233), diagnostic imaging (71046) and office visit, established patient (99214).
Where did Dr. James Woojong Chang go to medical school?
Dr. Chang graduated from Philadelphia College of Osteopathic Medicine in 2012.
What drugs does Dr. James Woojong Chang prescribe most?
In 2024 Medicare Part D data, Dr. Chang's most prescribed drugs by claims were Trelegy Ellipta, Albuterol Sulfate Hfa and Azelastine HCl.
Has Dr. James Woojong Chang received payments from drug or device companies?
CMS Open Payments shows $5,995 in general payments to Dr. Chang from 38 companies from 2017 to 2025. The largest total came from Sanofi and Genzyme US Companies.
How long has Dr. James Woojong Chang been practicing?
Dr. Chang graduated from medical school in 2012, 14 years ago.
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