Dr. Christopher Jia Jen Chang, MD
- Part D claims, 2024
- 19
- Industry payments
- $18
- Medical group
- 1
- State license
- 1
- Year NPI issued
- 2021
- Practice address
- 2650 Ridge Ave, Evanston, IL 60201
- Practice phone
- Call (312) 864-6000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Medical group
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. Christopher Jia Jen Chang is an emergency medicine physician in Evanston, Illinois
Dr. Chang practices with Inspire Health Medical Group, a medical group.
Dr. Chang's NPI, 1255913737, was assigned on April 24, 2021. Dr. Chang holds Illinois license 125.080754.
- NPI
- 1255913737NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8628457264
- NPI enumeration date
- April 24, 2021
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (312) 864-6000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Christopher Jia Jen Chang's practice address is in Evanston, Illinois
Dr. Chang's practice address in the NPI Registry is 2650 Ridge Ave, Evanston, IL 60201, in Cook County. The practice phone is (312) 864-6000.
- NPI Registry address2650 Ridge Ave, Evanston, IL 60201 · Cook CountyPhone(312) 864-6000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Christopher Jia Jen Chang is affiliated with 1 medical group
Dr. Chang is part of Inspire Health Medical Group, a medical group in Fresno, California.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Christopher Jia Jen 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 |
|---|---|
| Inspire Health Medical Group | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Inspire Health Medical Group and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Christopher Jia Jen Chang is one of 2,385 emergency medicine physicians in Illinois
Emergency medicine is Dr. Chang's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Chang is licensed in Illinois.
Specialties and state licenses
- Emergency medicine, IllinoisPrimary
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. Christopher Jia Jen Chang's patients have a median age of 61
Across all payers, Dmand AI patient panel data puts Dr. Chang's median patient age at 61, with 67% 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 61
Patient panel by sex, all payers
- Women67%
- Men33%
Source: Dmand AI Patient Panel Data
Dr. Christopher Jia Jen Chang wrote 19 Medicare Part D claims in 2024
In 2024, Dr. Chang wrote 19 Medicare Part D claims for 14 patients. 84% of them were for generic drugs.
Dr. Chang's Part D claims by kind of drug, 2024
- Generic16 claims84%
- Brand-name and other3 claims16%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Dr. Christopher Jia Jen 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)
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. Christopher Jia Jen Chang received $18 in industry payments in 2024
CMS Open Payments shows 1 general payment to Dr. Chang from 1 drug or device company in 2024. Food and beverage make up the largest share, 100% of the total. Boehringer Ingelheim Pharmaceuticals, Inc. paid the most, $18.
Companies that paid Dr. Chang the most, 2024 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Christopher Jia Jen 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 Practice Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | 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) |
| 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. Christopher Jia Jen 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. Christopher Jia Jen Chang's NPI number?
Dr. Christopher Jia Jen Chang's NPI number is 1255913737. It was assigned on April 24, 2021, and it is active in the NPI Registry.
What kind of doctor is Dr. Christopher Jia Jen Chang?
Dr. Christopher Jia Jen Chang is an emergency medicine physician in Evanston, Illinois. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Christopher Jia Jen Chang practice?
Dr. Chang practices at 2650 Ridge Ave, Evanston, IL 60201. Dr. Chang's primary practice is Inspire Health Medical Group, a medical group.
What is Dr. Christopher Jia Jen Chang's office phone number?
The practice phone on file for Dr. Chang is (312) 864-6000.
What is Dr. Christopher Jia Jen Chang's medical license number?
Dr. Chang holds Illinois license 125.080754.
What medical group is Dr. Christopher Jia Jen Chang part of?
Dr. Chang is part of Inspire Health Medical Group in Fresno, California.
Does Dr. Christopher Jia Jen Chang accept Medicare?
Yes. CMS lists Dr. Chang as accepting Medicare assignment.
Has Dr. Christopher Jia Jen Chang received payments from drug or device companies?
CMS Open Payments shows $18 in general payments to Dr. Chang from 1 company from 2024 to 2024. The largest total came from Boehringer Ingelheim Pharmaceuticals, Inc.
How long has Dr. Christopher Jia Jen Chang been practicing?
Dr. Chang's NPI was assigned in 2021.
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