Dr. Alexander K. Chang, DO
- Medicare services, 2024
- 840
- Medicare patients, 2024
- 498
- Part D claims, 2024
- 928
- MIPS score, 2024
- 90
- Hospital affiliations
- 5
- Practice address
- One Medical Park Blvd, Bristol, TN 37620
- Practice phone
- Call (423) 844-1121
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Chang's professional email, personal email and mobile number
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Dr. Alexander K. Chang is an emergency medicine physician in Bristol, Tennessee
Dr. Chang practices at Bristol Regional Medical Center in Bristol, Tennessee, part of Ballad Health.
Dr. Chang's NPI, 1336688795, was assigned on February 17, 2017. Dr. Chang graduated from Touro Un Col of Osteopathic Medicine, New York in 2017. Dr. Chang holds Virginia license 0102206912.
- NPI
- 1336688795NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5698024099
- NPI enumeration date
- February 17, 2017
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (423) 844-1121
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 35
- Medical school graduation
- 2017
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Alexander K. Chang practices at 2 locations in Bristol, Tennessee
Dr. Chang's primary practice is Bristol Regional Medical Center, at One Medical Park Blvd, Bristol, TN 37620 in Sullivan County. The practice phone is (423) 844-1121. Dr. Chang also practices at Bristol Regional Medical Center, 1 Medical Park Blvd, Bristol, TN 37620.
- Bristol Regional Medical CenterPrimaryOne Medical Park Blvd, Bristol, TN 37620 · Sullivan CountyPhone(423) 844-1121
- Bristol Regional Medical Center1 Medical Park Blvd, Bristol, TN 37620 · Sullivan CountyPhone(423) 844-1121
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; and Dmand AI Practice Data
Dr. Alexander K. Chang is affiliated with 5 sites of care and 9 medical groups
Dr. Chang's primary practice is Bristol Regional Medical Center in Bristol, Tennessee, part of Ballad Health. Dr. Chang is also affiliated with Holston Valley Medical Center. The medical group on file is Tri-Cities Regional Emergency Physicians. Dmand AI also links Dr. Chang to 3 more hospitals and 8 medical groups, 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. Alexander K. Chang's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chang practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Bristol Regional Medical Center | Available with a free account |
| +4 more sites and 8 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Alexander K. Chang is one of 1,088 emergency medicine physicians in Tennessee
Emergency medicine is Dr. Chang's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dmand AI has Dr. Chang's licenses on file in 3 states: Virginia, Mississippi and Tennessee.
Specialties and state licenses
- Emergency medicine, VirginiaPrimary
- Mississippi license
- Tennessee license
Emergency medicine physicians near Dr. Chang
Counts of emergency medicine physicians 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. Alexander K. Chang billed Medicare for 840 services in 2024
CMS data shows 840 Medicare services from Dr. Chang across 4 procedure codes in 2024, for 498 Medicare patients. Medicare paid $64,413 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Chang's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 5342024: 5242%
- Tests and treatments
- 2023: 3382024: 3167%
Dr. Chang compared with the Tennessee median for emergency medicine physicians, 2024
- Dr. Chang
- Tennessee median
- Medicare services
- 840vs 2663.2 times
- Medicare patients
- 498vs 25794% above
- Part D claims
- 787vs 938.5 times
Medians across 1,079 emergency medicine physicians in Tennessee 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 emergency medicine physicians in Tennessee.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Alexander K. Chang treated 498 Medicare patients in 2024, average age 73
CMS counts 498 Medicare patients who saw Dr. Chang in 2024. The largest group is 65 to 74, with 166 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 25% are also on Medicaid. Their average risk score is 1.93, 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 67, with 54% women.
Dr. Chang's Medicare patients by age, 2024
Dr. Chang's Medicare patients by sex, 2024
- Women27255%
- Men22645%
Chronic conditions among Dr. Chang's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis47%
- Anxiety45%
- Mood disorders42%
- Chronic kidney disease40%
- Diabetes40%
- Ischemic heart disease40%
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 67
Patient panel by sex, all payers
- Women54%
- Men45%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Alexander K. Chang wrote 928 Medicare Part D claims in 2024
In 2024, Dr. Chang wrote 928 Medicare Part D claims for 450 patients. 94% of them were for generic drugs. CMS names the drug for 787 of them, across 20 drugs with 11 or more claims each, at $7,439 in total drug cost. In 2023, CMS named 651 claims across 16 drugs.
Dr. Chang's Part D claims by kind of drug, 2024
- Generic872 claims94%
- Brand-name56 claims6%
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
- Opioids11%102 of 928 claims
- Antibiotics19%174 of 928 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: 6512024: 78721%
Drugs named by CMS: 20 in 2024, 16 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. Alexander K. Chang scored 90 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 90 out of 100 for Dr. Chang for performance year 2024, reported as part of a group. 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
- 90of 100Final score
- 83.8of 100Quality
- 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. Alexander K. Chang received $169 in industry payments from 2017 to 2025
CMS Open Payments shows 5 general payments to Dr. Chang from 5 drug and device companies from 2017 to 2025. Food and beverage make up the largest share, 100% of the total. Amgen Inc. paid the most, $68.
General payments to Dr. Chang by program year, 2017 to 2025
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. Alexander K. Chang graduated from Touro Un Col of Osteopathic Medicine, New York
Dr. Chang graduated from Touro Un Col of Osteopathic Medicine, New York in 2017.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Alexander K. 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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Affiliation DataDmand AI Practice 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. Alexander K. 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. Alexander K. Chang's NPI number?
Dr. Alexander K. Chang's NPI number is 1336688795. It was assigned on February 17, 2017, and it is active in the NPI Registry.
What kind of doctor is Dr. Alexander K. Chang?
Dr. Alexander K. Chang is an emergency medicine physician in Bristol, Tennessee. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Alexander K. Chang practice?
Dr. Chang practices at One Medical Park Blvd, Bristol, TN 37620. Dr. Chang also practices at 1 Medical Park Blvd, Bristol, TN 37620. Dr. Chang's primary practice is Bristol Regional Medical Center in Bristol, Tennessee, part of Ballad Health. Dmand AI also links Dr. Chang to 3 hospitals and 8 medical groups.
What is Dr. Alexander K. Chang's office phone number?
The practice phone on file for Dr. Chang is (423) 844-1121.
What is Dr. Alexander K. Chang's medical license number?
Dr. Chang holds Virginia license 0102206912, one of the licenses on file in 3 states.
Which states has Dr. Alexander K. Chang been licensed in?
Dmand AI has state licenses on file for Dr. Chang in Virginia, Mississippi and Tennessee.
Which hospitals is Dr. Alexander K. Chang affiliated with?
Dr. Chang practices at Bristol Regional Medical Center in Bristol, Tennessee. Dr. Chang is also affiliated with Holston Valley Medical Center. Dmand AI links Dr. Chang to 3 more hospitals.
What medical group is Dr. Alexander K. Chang part of?
Dr. Chang is linked to Tri-Cities Regional Emergency Physicians. Dmand AI links Dr. Chang to 8 more medical groups.
Does Dr. Alexander K. Chang accept Medicare?
Yes. CMS data shows Dr. Chang billed Medicare for 840 services in 2024, and Dr. Chang accepts Medicare assignment.
What is Dr. Alexander K. Chang's MIPS score?
Dr. Chang's MIPS final score for performance year 2024 is 90 out of 100, reported as part of a group.
Show 6 more questionsShow fewer questions
How many Medicare patients does Dr. Alexander K. Chang see?
CMS counts 498 Medicare patients who saw Dr. Chang in 2024, with an average age of 73.
What services does Dr. Alexander K. Chang bill to Medicare?
In 2024, Dr. Chang's most billed Medicare services were emergency department visit (99285), heart test or procedure (93010) and emergency department visit (99284).
Where did Dr. Alexander K. Chang go to medical school?
Dr. Chang graduated from Touro Un Col of Osteopathic Medicine, New York in 2017.
What drugs does Dr. Alexander K. Chang prescribe most?
In 2024 Medicare Part D data, Dr. Chang's most prescribed drugs by claims were Ondansetron HCl, Methocarbamol and Hydrocodone-Acetaminophen.
Has Dr. Alexander K. Chang received payments from drug or device companies?
CMS Open Payments shows $169 in general payments to Dr. Chang from 5 companies from 2017 to 2025. The largest total came from Amgen Inc.
How long has Dr. Alexander K. Chang been practicing?
Dr. Chang graduated from medical school in 2017, 9 years ago.
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