Jimmy Chang, M.D.
Internal Medicine Physician · Hackettstown, NJ
Jimmy Chang, M.D. is an internal medicine physician with a practice address in Hackettstown, New Jersey, and NPI 1629082300, issued on Jul 28, 2006. Check the license (New Jersey 25MA06550000, as entered in NPPES) on the New Jersey State Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Jimmy Chang
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 25MA06550000 NJ
Self-reported in NPPES; status is on the state search - Practice location
- 657 Willow Grove St, Hackettstown, NJ 07840
- Phone
- (908) 850-7800
- Enumerated
- Jul 28, 2006
- Record last updated
- Sep 11, 2012 (not updated in 14 years: call before relying on the address or phone)
- Fax
- (908) 850-7802
- Medicare enrollment
- Enrolled (PECOS I20120425000261); accepts Medicare assignment
- Medical or professional school
- Northwestern University Feinberg Medical School, 1992
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 4,632 in New Jersey → Look up another NPI →
Also registered at 657 Willow Grove St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Patrick Caruso, MDPediatrics Physician1588630784
- Adam Dick, M.D.Pediatrics Physician1770597551
- Ann Falbo, M.D.Pediatrics Physician1063426021
- Eric Gross, M.D.Surgery Physician1215937602
- Jenna Stephens, R.D.Registered Dietitian1427364850
- Eduard Tapliga, MDInternal Medicine Physician1356302483
Verify Jimmy Chang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNew Jersey State Board of Medical Examiners
Search for license 25MA06550000Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% more Medicare Part D claims than the average internal medicine physician in 2024
6,263 Medicare Part D claims for 562 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims.
Most prescribed
- Amlodipine Besylate446 claims
- Atorvastatin Calcium411 claims
- Levothyroxine Sodium306 claims
- Valsartan180 claims
- Zolpidem Tartrate179 claims
- Alprazolam178 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
- Plaza Family Care PCHackettstown, NJ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Jimmy Chang among 4,632 internal medicine physician records in New Jersey
Jimmy Chang, M.D. is one of 4,632 internal medicine physician records with a practice address in New Jersey. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 8% of them.
- NPI issued2006 · 8% of these records are older, 50% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated1992 · median 2000 among the 3,132 with a school on file
- Record last updated2012 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a New Jersey practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
26 internal medicine physician records list a practice address in Hackettstown
They are 26 of the 575 NPPES records with a practice address in Hackettstown, and 4,632 internal medicine physician records in New Jersey.
All 4,632 in New Jersey → Every provider in Hackettstown → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Antonella Auciello, M.D.Hackettstown, NJ 078401629064043
- Devi Gollapudi, M.D.Hackettstown, NJ 078401841248036
- Keri Ingrassia-Squiers, DOHackettstown, NJ 078401467465203
- Kenneth Janowski, DOHackettstown, NJ 078401629017017
- Uldis Jansons, MDHackettstown, NJ 078401255312054
- Sanjay Kavathia, M.D.Hackettstown, NJ 078401124078142
- Ahmad Maatouk, M.D.Hackettstown, NJ 078401790938066
- Jeffrey Merkle, MDHackettstown, NJ 078401295721165
Common questions
What is Jimmy Chang, M.D.'s NPI number?
Jimmy Chang, M.D.'s National Provider Identifier (NPI) is 1629082300, issued on Jul 28, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Jimmy Chang, M.D. located?
The NPPES record lists a practice address at 657 Willow Grove St, Hackettstown, NJ, 07840. Phone: (908) 850-7800. Providers update this record themselves, so call before visiting.
How can I verify Jimmy Chang, M.D.'s license?
NPPES lists New Jersey license number 25MA06550000, as entered by the provider. Search the New Jersey State Board of Medical Examiners at https://newjersey.mylicense.com/verification/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Jimmy Chang, M.D. prescribe under Medicare Part D?
In 2024, Jimmy Chang, M.D. had 6,263 Medicare Part D claims for 562 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.