Jonathan Chang
Colon & Rectal Surgery Physician · Bloomfield, CT
Jonathan Chang is a colon & rectal surgery physician with a practice address in Bloomfield, Connecticut, and NPI 1861924755, issued on Mar 30, 2017. Check the license (Connecticut 80291, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Jonathan Chang
- Primary taxonomy
- Colon & Rectal Surgery Physician 208C00000X
- License number
- 80291 CT
Self-reported in NPPES; status is on the state search - Practice location
- 6 Northwestern Dr Ste 305, Bloomfield, CT 06002
- Phone
- (860) 242-8591
- Enumerated
- Mar 30, 2017
- Record last updated
- Aug 5, 2025
- Fax
- (860) 242-2511
- Medicare enrollment
- Enrolled (PECOS I20250724003895); accepts Medicare assignment
- Medical or professional school
- Tufts University School Of Medicine, 2017
- Entity
- Type 1 · individual
8 nearest colon & rectal surgery physician records → All 54 in Connecticut → Look up another NPI →
Also registered at 6 Northwestern Dr Ste 305
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Amanda Ayers, M.D.Colon & Rectal Surgery Physician1528268182
- Vanessa Baratta, M.D.Colon & Rectal Surgery Physician1043667173
- Meghan Dolan, PA-CSurgical Physician Assistant1508194143
- Erica Lambert, M.D.Urology Physician1285803528
- Andrew Raissis, M.D.Colon & Rectal Surgery Physician1316220429
- Robin Tedesco, PA-CSurgical Physician Assistant1609146778
Verify Jonathan Chang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 80291Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
94% fewer Medicare Part D claims than the average colon & rectal surgery physician in 2024
12 Medicare Part D claims, against an average of 192 among the 1,836 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Colon And Rectal Surgeons OF Greater Hartford LLCBloomfield, CT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Jonathan Chang among 54 colon & rectal surgery physician records in Connecticut
Jonathan Chang is one of 54 colon & rectal surgery physician records with a practice address in Connecticut. 87% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2017, is newer than 94% of them.
- NPI issued2017 · 94% of these records are older, 4% newer
- In a Medicare fileYes · 87% of these records are
- In the CMS Doctors and Clinicians fileYes · 80% of these records are
- Graduated2017 · median 2004 among the 43 with a school on file
- Record last updated2025 · 69% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208C00000X and a Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
11 colon & rectal surgery physician records list a practice address in Bloomfield
They are 11 of the 521 NPPES records with a practice address in Bloomfield, and 54 colon & rectal surgery physician records in Connecticut.
All 54 in Connecticut → Every provider in Bloomfield → Colon & Rectal Surgery Physician nationwide →
The 8 colon & rectal surgery physician records with the nearest ZIP codes
- Amanda Ayers, M.D.Bloomfield, CT 060021528268182
- Saumitra Banerjee, M.D.Bloomfield, CT 060021053373431
- Vanessa Baratta, M.D.Bloomfield, CT 060021043667173
- David Cherry, M.D.Bloomfield, CT 060021215999198
- Robert Lewis, M.DBloomfield, CT 060021124175070
- Daniel Mullins, M.D.Bloomfield, CT 060021205063849
- William Pennoyer, M.D.Bloomfield, CT 060021932161809
- Andrew Raissis, M.D.Bloomfield, CT 060021316220429
Common questions
What is Jonathan Chang's NPI number?
Jonathan Chang's National Provider Identifier (NPI) is 1861924755, issued on Mar 30, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Jonathan Chang located?
The NPPES record lists a practice address at 6 Northwestern Dr Ste 305, Bloomfield, CT, 06002. Phone: (860) 242-8591. Providers update this record themselves, so call before visiting.
How can I verify Jonathan Chang's license?
NPPES lists Connecticut license number 80291, as entered by the provider. Search the Connecticut Medical Examining Board at https://www.elicense.ct.gov/Lookup/LicenseLookup.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Jonathan Chang prescribe under Medicare Part D?
In 2024, Jonathan Chang had 12 Medicare Part D claims; the average among colon & rectal surgery physician prescribers was 192. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.