Dr. Jimmy C. Chang, MD
- Medicare services, 2024
- 2,188
- Medicare patients, 2024
- 455
- Part D claims, 2024
- 6,263
- Hospital affiliations
- 6
- Industry payments
- $3,010
- Practice address
- 657 Willow Grove St, Hackettstown, NJ 07840
- Practice phone
- Call (908) 850-7800
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Plaza Family Care
Hackettstown, New Jersey
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. Jimmy C. Chang is an internist in Hackettstown, New Jersey
Dr. Chang practices at Plaza Family Care in Hackettstown, New Jersey.
Dr. Chang's NPI, 1629082300, was assigned on July 28, 2006. Dr. Chang graduated from Feinberg School of Medicine in 1992. Dr. Chang's New Jersey license number on file is 25MA06550000.
- NPI
- 1629082300NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5799870044
- NPI enumeration date
- July 28, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (908) 850-7800
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 60
- Medical school graduation
- 1992
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Jimmy C. Chang practices at Plaza Family Care in Hackettstown, New Jersey
Dr. Chang's primary practice is Plaza Family Care, at 657 Willow Grove St, Hackettstown, NJ 07840 in Warren County. The practice phone is (908) 850-7800.
- Plaza Family Care657 Willow Grove St, Hackettstown, NJ 07840 · Warren CountyPhone(908) 850-7800
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Jimmy C. Chang is affiliated with 9 sites of care and 1 medical group
Dr. Chang's primary practice is Plaza Family Care in Hackettstown, New Jersey. Dr. Chang is also affiliated with Hackettstown Medical Center. The medical group on file is Plaza Family Care. Dmand AI also links Dr. Chang to 5 more hospitals, 1 group practice or clinic and 1 home health agency, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Jimmy C. Chang's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chang practices, 8 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Plaza Family Care | Available with a free account |
| +8 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Jimmy C. Chang is one of 4,226 internists in New Jersey
Internal medicine is Dr. Chang's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Chang is board certified in gastroenterology by the American Board of Internal Medicine. Dmand AI has Dr. Chang's licenses on file in 2 states: New Jersey and New York.
Specialties and state licenses
- Internal medicine, New JerseyPrimary
- New York license
Clinical focus
Dmand AI lists acid reflux, acute skin infection, aneurysm, anxiety, arthritis, asthma, atrial fibrillation and flutter and bronchitis among the conditions Dr. Chang treats.
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. Jimmy C. Chang billed Medicare for 2,188 services in 2024
CMS data shows 2,188 Medicare services from Dr. Chang across 16 procedure codes in 2024, for 455 Medicare patients. Medicare paid $146,628 for them.
Dr. Chang's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 9622024: 1,11916%
- Other services
- 2023: 2952024: 908208%
- Tests and treatments
- 2023: 1352024: 1361%
- Surgery
- 2023: 172024: 1324%
- Lab and pathology
- 2023: 02024: 12
Where Dr. Chang's Medicare services took place, 2024
- In an office2,16199%
- In a facility271%
Dr. Chang compared with the New Jersey median for internists, 2024
- Dr. Chang
- New Jersey median
- Medicare services
- 2,188vs 7233.0 times
- Medicare patients
- 455vs 23197% above
- Part D claims
- 5,585vs 8306.7 times
Medians across 4,086 internists in New Jersey with Dmand AI profiles that report each measure.
Dr. Chang's most billed Medicare procedure codes, 2024
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 New Jersey.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Jimmy C. Chang treated 455 Medicare patients in 2024, average age 73
CMS counts 455 Medicare patients who saw Dr. Chang in 2024. The largest group is 65 to 74, with 287 patients. 75% of them have high blood pressure, and 75% have high cholesterol. Their average risk score is 0.80, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Chang's median patient age at 59, with 43% women.
Dr. Chang's Medicare patients by age, 2024
Dr. Chang's Medicare patients by sex, 2024
- Women20545%
- Men25055%
Chronic conditions among Dr. Chang's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis33%
- Diabetes28%
- Ischemic heart disease27%
- Anxiety18%
- Chronic kidney disease15%
- Atrial fibrillation13%
Share of Medicare patients with each condition. A patient can have several.
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 59
Patient panel by sex, all payers
- Women43%
- Men54%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Jimmy C. Chang wrote 6,263 Medicare Part D claims in 2024
In 2024, Dr. Chang wrote 6,263 Medicare Part D claims for 562 patients. 90% of them were for generic drugs. CMS names the drug for 5,585 of them, across 103 drugs with 11 or more claims each, at $351,331 in total drug cost. In 2023, CMS named 4,969 claims across 96 drugs.
Dr. Chang's Part D claims by kind of drug, 2024
- Generic5,610 claims90%
- Brand-name631 claims10%
- Other22 claims0%
Dr. Chang's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Chang's Part D claims, 2024
- Antibiotics2%103 of 6,263 claims
- Antipsychotics, patients 65 and over0%14 of 6,263 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 4,9692024: 5,58512%
Drugs named by CMS: 103 in 2024, 96 in 2023.
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
Dr. Jimmy C. Chang ranks in the 50th percentile for colonoscopy in Medicare
Dr. Chang accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 23 procedures of colonoscopy by Dr. Chang, more than 50% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Dr. Chang ranks in Medicare procedure volume
- Colonoscopy
- 50th percentile23 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Upper gastrointestinal (GI) endoscopy for acid reflux: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Jimmy C. Chang received $3,010 in industry payments from 2016 to 2023
CMS Open Payments shows 2 general payments to Dr. Chang from 2 drug and device companies from 2016 to 2023. Grants make up the largest share, 100% of the total. Medtronic, Inc. paid the most, $3,000.
General payments to Dr. Chang by program year, 2016 to 2023
General payments to Dr. Chang by kind, 2016 to 2023
- Grants$3,000100%
- Food and beverage$100%
Companies that paid Dr. Chang the most, 2016 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Jimmy C. Chang has 1 award and honors on record
Dmand AI lists 1 award for Dr. Chang, most recently CMS Stage 1 EHR in 2013.
Awards and honors for Dr. Chang
- 2013
- CMS Stage 1 EHR
Source: Dmand AI Professional Profile Data
Dr. Jimmy C. Chang graduated from Feinberg School of Medicine
Dr. Chang graduated from Feinberg School of Medicine in 1992. Dr. Chang is a member of ACG.
- Medical school
- Board certified in gastroenterology
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. Jimmy C. Chang accepts plans from 8 insurance carriers
Dr. Chang is in network with 8 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Horizon Blue Cross Blue Shield of New Jersey. Medicare plans come from the most carriers, 8. Check the plan with the practice before a visit.
- Aetna
- Blue Cross Blue Shield of Michigan
- Horizon Blue Cross Blue Shield of New Jersey
- Blue Cross Blue Shield of Massachusetts
- HCSC
- Regence Health Plans
- United Healthcare
- CMS Medicare
Plan types Dr. Chang accepts, by number of carriers
- Medicare8
- PPO7
- HMO3
- POS2
- EPO1
Source: Dmand AI Insurance Network Data
Sources for Dr. Jimmy C. 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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| 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 DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| 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)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network 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 Dr. Jimmy C. 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. Jimmy C. Chang's NPI number?
Dr. Jimmy C. Chang's NPI number is 1629082300. It was assigned on July 28, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Jimmy C. Chang?
Dr. Jimmy C. Chang is an internist in Hackettstown, New Jersey. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Jimmy C. Chang practice?
Dr. Chang practices at 657 Willow Grove St, Hackettstown, NJ 07840. Dr. Chang's primary practice is Plaza Family Care in Hackettstown, New Jersey. Dmand AI also links Dr. Chang to 5 hospitals, 1 group practice or clinic and 1 home health agency.
What is Dr. Jimmy C. Chang's office phone number?
The practice phone on file for Dr. Chang is (908) 850-7800.
What is Dr. Jimmy C. Chang's medical license number?
Dr. Chang's New Jersey license number on file is 25MA06550000, one of the licenses on file in 2 states.
Which states has Dr. Jimmy C. Chang been licensed in?
Dmand AI has state licenses on file for Dr. Chang in New Jersey (1997 to 2025) and New York (1993 to 2007).
Which hospitals is Dr. Jimmy C. Chang affiliated with?
Dr. Chang is affiliated with Hackettstown Medical Center. Dmand AI links Dr. Chang to 5 more hospitals.
What medical group is Dr. Jimmy C. Chang part of?
Dr. Chang is linked to Plaza Family Care.
Does Dr. Jimmy C. Chang accept Medicare?
Yes. CMS data shows Dr. Chang billed Medicare for 2,188 services in 2024, and Dr. Chang accepts Medicare assignment.
How many Medicare patients does Dr. Jimmy C. Chang see?
CMS counts 455 Medicare patients who saw Dr. Chang in 2024, with an average age of 73.
Show 7 more questionsShow fewer questions
Is Dr. Jimmy C. Chang board certified?
Yes. Dr. Chang is board certified in gastroenterology by the American Board of Internal Medicine.
What services does Dr. Jimmy C. Chang bill to Medicare?
In 2024, Dr. Chang's most billed Medicare services were office visit, established patient (99214), medicare service (G2211) and office visit, established patient (99213).
Where did Dr. Jimmy C. Chang go to medical school?
Dr. Chang graduated from Feinberg School of Medicine in 1992.
What drugs does Dr. Jimmy C. Chang prescribe most?
In 2024 Medicare Part D data, Dr. Chang's most prescribed drugs by claims were Amlodipine Besylate, Atorvastatin Calcium and Levothyroxine Sodium.
Has Dr. Jimmy C. Chang received payments from drug or device companies?
CMS Open Payments shows $3,010 in general payments to Dr. Chang from 2 companies from 2016 to 2023. The largest total came from Medtronic, Inc.
How long has Dr. Jimmy C. Chang been practicing?
Dr. Chang graduated from medical school in 1992, 34 years ago.
What insurance does Dr. Jimmy C. Chang accept?
Dr. Chang is in network with 8 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Horizon Blue Cross Blue Shield of New Jersey. Medicare plans come from the most carriers, 8. Check the plan with the practice before a visit.
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