Dr. Mark Joshua Chang, DO
- Medicare services, 2023
- 320
- Part D claims, 2024
- 18
- Publications
- 6
- Industry payments
- $1,437
- Affiliated sites
- 1
- Practice address
- 1707 W Charleston Blvd Ste 290 Suite 290, Las Vegas, NV 89102
- Practice phone
- Call (702) 790-2255
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Unlv Medicine - Primary Care - Las Vegas (1707 W Charleston Blvd)
Multi-specialty group site · Las Vegas, Nevada
Find Dr. Chang's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Mark Joshua Chang is an internist in Charlotte, North Carolina
Dr. Chang practices at Unlv Medicine - Primary Care - Las Vegas (1707 W Charleston Blvd) in Las Vegas, Nevada.
Dr. Chang's NPI, 1861954182, was assigned on April 4, 2019. Dr. Chang holds Nevada license DO3131.
- NPI
- 1861954182NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5294062634
- NPI enumeration date
- April 4, 2019
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (702) 790-2255
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 33
- Medical school graduation
- 2019
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Mark Joshua Chang practices in Las Vegas and Charlotte
Dr. Chang's primary practice is Unlv Medicine - Primary Care - Las Vegas (1707 W Charleston Blvd), at 1707 W Charleston Blvd Ste 290 Suite 290, Las Vegas, NV 89102. The practice phone is (702) 790-2255. The NPI Registry lists Dr. Chang's practice address as 1000 Blythe Blvd, Charlotte, NC 28203.
- Unlv Medicine - Primary Care - Las Vegas (1707 W Charleston Blvd)Primary1707 W Charleston Blvd Ste 290 Suite 290, Las Vegas, NV 89102Phone(702) 790-2255
- NPI Registry address1000 Blythe Blvd, Charlotte, NC 28203 · Mecklenburg CountyPhone(702) 676-3650
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; Doctors and Clinicians National Downloadable File (CMS); and Dmand AI Practice Data
Dr. Mark Joshua Chang is affiliated with 1 site of care and 2 medical groups
Dr. Chang's primary practice is Unlv Medicine - Primary Care - Las Vegas (1707 W Charleston Blvd) in Las Vegas, Nevada. The medical group on file is City of Hope. Dmand AI also links Dr. Chang to 1 more medical group, named with a free account.
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dmand AI tracks the EHR system at Dr. Mark Joshua Chang's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chang practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Unlv Medicine - Primary Care - Las Vegas (1707 W Charleston Blvd) | Available with a free account |
| +1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Mark Joshua Chang is one of 3,705 internists in North Carolina
Internal medicine is Dr. Chang's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Chang is licensed in Nevada.
Specialties and state licenses
- Internal medicine, NevadaPrimary
Internists near Dr. Chang
Counts of internists 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. Mark Joshua Chang billed Medicare for 320 services in 2023
CMS data shows 320 Medicare services from Dr. Chang across 5 procedure codes in 2023. Medicare paid $15,962 for them.
Where Dr. Chang's Medicare services took place, 2023
- In an office196%
- In a facility30194%
Dr. Chang compared with the North Carolina median for internists, 2023
- Dr. Chang
- North Carolina median
- Medicare services
- 320vs 52139% below
- Part D claims
- 49vs 27282% below
Medians across 3,695 internists in North Carolina with Dmand AI profiles that report each measure.
Dr. Chang's most billed Medicare procedure codes, 2023
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Chang?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Chang and other internists in North Carolina.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Mark Joshua Chang's patients have a median age of 79
Across all payers, Dmand AI patient panel data puts Dr. Chang's median patient age at 79, with 0% women.
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 79
Patient panel by sex, all payers
- Women0%
- Men100%
Source: Dmand AI Patient Panel Data
Dr. Mark Joshua Chang wrote 18 Medicare Part D claims in 2024
In 2024, Dr. Chang wrote 18 Medicare Part D claims. 89% of them were for generic drugs. They cover 2 drugs, with $435 in total drug cost.
Dr. Chang's Part D claims by kind of drug, 2024
- Generic16 claims89%
- Brand-name and other2 claims11%
Dr. Chang's most prescribed drugs by claims, 2023
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
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
How Dr. Mark Joshua Chang takes part in Medicare
Dr. Chang accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Mark Joshua Chang has 6 publications on record
Dmand AI links 6 papers to Dr. Chang, published from 2022 to 2023. 2023 was the busiest year, with 4. Dr. Chang has published most often in Cureus. Dr. Chang's most frequent co-authors are Wolfram E. Samlowski, MD, Shana Bomberger, MD and Yen Thi Kim Hong Cao, MD.
Dr. Chang's most frequent co-authors
- Wolfram E. Samlowski, MD2 shared papers
- Shana Bomberger, MD1 shared paper
- Yen Thi Kim Hong Cao, MD1 shared paper
Recent publications by Dr. Chang
See who Dr. Chang researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Chang works with, so you can find a warm path to the right internists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Mark Joshua Chang received $1,437 in industry payments from 2023 to 2025
CMS Open Payments shows 15 general payments to Dr. Chang from 7 drug and device companies from 2023 to 2025. Food and beverage make up the largest share, 63% of the total. Incyte Corporation paid the most, $422.
General payments to Dr. Chang by program year, 2023 to 2025
General payments to Dr. Chang by kind, 2023 to 2025
- Food and beverage$90263%
- Education$53537%
Companies that paid Dr. Chang the most, 2023 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Mark Joshua 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 DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| 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 Data |
| 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) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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. Mark Joshua 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. Mark Joshua Chang's NPI number?
Dr. Mark Joshua Chang's NPI number is 1861954182. It was assigned on April 4, 2019, and it is active in the NPI Registry.
What kind of doctor is Dr. Mark Joshua Chang?
Dr. Mark Joshua Chang is an internist in Charlotte, North Carolina. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Mark Joshua Chang practice?
Dr. Chang practices at 1707 W Charleston Blvd Ste 290 Suite 290, Las Vegas, NV 89102. Dr. Chang also practices at 1000 Blythe Blvd, Charlotte, NC 28203. Dr. Chang's primary practice is Unlv Medicine - Primary Care - Las Vegas (1707 W Charleston Blvd) in Las Vegas, Nevada. Dmand AI also links Dr. Chang to 1 medical group.
What is Dr. Mark Joshua Chang's office phone number?
The practice phone on file for Dr. Chang is (702) 790-2255.
What is Dr. Mark Joshua Chang's medical license number?
Dr. Chang holds Nevada license DO3131.
What medical group is Dr. Mark Joshua Chang part of?
Dr. Chang is linked to City of Hope. Dmand AI links Dr. Chang to 1 more medical group.
Does Dr. Mark Joshua Chang accept Medicare?
Yes. CMS data shows Dr. Chang billed Medicare for 320 services in 2023, and Dr. Chang accepts Medicare assignment.
What services does Dr. Mark Joshua Chang bill to Medicare?
In 2023, Dr. Chang's most billed Medicare services were hospital inpatient care (99231), hospital inpatient care (99232) and hospital inpatient care (99238).
What drugs does Dr. Mark Joshua Chang prescribe most?
In 2023 Medicare Part D data, Dr. Chang's most prescribed drugs by claims were Fluticasone Propionate and Amoxicillin-Clavulanate Potass.
Has Dr. Mark Joshua Chang received payments from drug or device companies?
CMS Open Payments shows $1,437 in general payments to Dr. Chang from 7 companies from 2023 to 2025. The largest total came from Incyte Corporation.
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How long has Dr. Mark Joshua Chang been practicing?
Dr. Chang graduated from medical school in 2019, 7 years ago.
Does Dr. Mark Joshua Chang do research?
Dmand AI links 6 publications to Dr. Chang, published from 2022 to 2023.
Who does Dr. Mark Joshua Chang publish with?
Dr. Chang's most frequent co-authors are Wolfram E. Samlowski, MD (2 shared papers), Shana Bomberger, MD (1 shared paper) and Yen Thi Kim Hong Cao, MD (1 shared paper).
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