Jonathan Chang
- Part D claims, 2024
- 12
- Hospital affiliations
- 3
- Industry payments
- $1,130
- Medical groups
- 2
- State license
- 1
- Practice address
- 2400 Tamarack Ave, South Windsor, CT 06074
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Evergreen Endoscopy Center LLC - HOPD
Acute Care Hospital outpatient department · South Windsor, Connecticut
Find Jonathan 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.
Jonathan Chang is a colorectal surgeon in South Windsor, Connecticut
Jonathan Chang practices at Evergreen Endoscopy Center LLC - HOPD in South Windsor, Connecticut.
Jonathan Chang's NPI, 1861924755, was assigned on March 30, 2017. Jonathan Chang graduated from Tufts University School of Medicine in 2017. Jonathan Chang holds Connecticut license 80291.
- NPI
- 1861924755NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0345511739
- NPI enumeration date
- March 30, 2017
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- 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)
Jonathan Chang practices at Evergreen Endoscopy Center LLC - HOPD in South Windsor, Connecticut
Jonathan Chang's primary practice is Evergreen Endoscopy Center LLC - HOPD, at 2400 Tamarack Ave, South Windsor, CT 06074.
- Evergreen Endoscopy Center LLC - HOPD2400 Tamarack Ave, South Windsor, CT 06074
Source: Dmand AI Affiliation Data
Jonathan Chang is affiliated with 7 sites of care and 2 medical groups
Jonathan Chang's primary practice is Evergreen Endoscopy Center LLC - HOPD in South Windsor, Connecticut. Jonathan Chang is also affiliated with Hartford Hospital. The medical group on file is Colon and Rectal Surgeons of Greater Hartford. Dmand AI also links Jonathan Chang to 2 more hospitals, 2 group practices and clinics, 1 ambulatory surgery center and 1 medical group, each named with a free account. Jonathan Chang's employer is on file too: a hospital.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Jonathan Chang's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Jonathan Chang practices, 7 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Evergreen Endoscopy Center LLC - HOPD | Available with a free account |
| +6 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Jonathan Chang is one of 47 colorectal surgeons in Connecticut
Colon and rectal surgery is Jonathan Chang's primary specialty in the NPI Registry, under taxonomy code 208C00000X. Jonathan Chang is licensed in Connecticut.
Specialties and state licenses
- Colon and rectal surgery, ConnecticutPrimary
Colorectal surgeons near Jonathan Chang
Counts of colorectal surgeons 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
Jonathan Chang's patients have a median age of 60
Across all payers, Dmand AI patient panel data puts Jonathan Chang's median patient age at 60, with 46% women.
Jonathan 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 60
Patient panel by sex, all payers
- Women46%
- Men53%
Source: Dmand AI Patient Panel Data
Jonathan Chang wrote 12 Medicare Part D claims in 2024
In 2024, Jonathan Chang wrote 12 Medicare Part D claims. 100% of them were for generic drugs.
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
Jonathan Chang ranks in the 41st percentile for colonoscopy in Medicare
Jonathan Chang accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 11 procedures of colonoscopy by Jonathan Chang, more than 41% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Jonathan Chang ranks in Medicare procedure volume
- Colonoscopy
- 41st percentile11 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Jonathan Chang received $1,130 in industry payments in 2025
CMS Open Payments shows 4 general payments to Jonathan Chang from 2 drug and device companies in 2025. Education make up the largest share, 88% of the total. Intuitive Surgical, Inc. paid the most, $1,029.
General payments to Jonathan Chang by kind, 2025 to 2025
- Education$1,00088%
- Food and beverage$13012%
Companies that paid Jonathan Chang the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Jonathan Chang graduated from Tufts University School of Medicine
Jonathan Chang graduated from Tufts University School of Medicine in 2017.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Jonathan 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 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)Doctors and Clinicians Utilization Data (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 Jonathan 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 Jonathan Chang's NPI number?
Jonathan Chang's NPI number is 1861924755. It was assigned on March 30, 2017, and it is active in the NPI Registry.
What does Jonathan Chang specialize in?
Jonathan Chang is a colorectal surgeon in South Windsor, Connecticut. The primary specialty in the NPI Registry is Colon & Rectal Surgery Physician (taxonomy code 208C00000X).
Where does Jonathan Chang practice?
Jonathan Chang practices at 2400 Tamarack Ave, South Windsor, CT 06074. Jonathan Chang's primary practice is Evergreen Endoscopy Center LLC - HOPD in South Windsor, Connecticut. Dmand AI also links Jonathan Chang to 2 hospitals, 2 group practices and clinics, 1 ambulatory surgery center and 1 medical group.
What is Jonathan Chang's medical license number?
Jonathan Chang holds Connecticut license 80291.
Which hospitals is Jonathan Chang affiliated with?
Jonathan Chang is affiliated with Hartford Hospital. Dmand AI links Jonathan Chang to 2 more hospitals.
What medical group is Jonathan Chang part of?
Jonathan Chang is linked to Colon and Rectal Surgeons of Greater Hartford. Dmand AI links Jonathan Chang to 1 more medical group.
Does Jonathan Chang accept Medicare?
Yes. CMS lists Jonathan Chang as accepting Medicare assignment.
Where did Jonathan Chang go to medical school?
Jonathan Chang graduated from Tufts University School of Medicine in 2017.
Has Jonathan Chang received payments from drug or device companies?
CMS Open Payments shows $1,130 in general payments to Jonathan Chang from 2 companies from 2025 to 2025. The largest total came from Intuitive Surgical, Inc.
How long has Jonathan Chang been practicing?
Jonathan Chang graduated from medical school in 2017, 9 years ago.
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