Jimmy Chang, M.D.
NPI 1629082300 · Internal Medicine Physician · Hackettstown, NJ
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jimmy Chang, M.D. is a Internal Medicine Physician provider in Hackettstown, NJ (NPI 1629082300).
Provider details
- NPI number
- 1629082300
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 25MA06550000 (NJ)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
2,073 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 673 | $138 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 608 | $18 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 261 | $99 |
| Advance Care Planning, First 30 Minutes99497 | 152 | $88 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 132 | $141 |
| Administration of Influenza Virus Vaccine |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 103 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amlodipine Besylate | 446 | 125 |
| Atorvastatin Calcium | 411 | 106 |
| Levothyroxine Sodium | 306 | 64 |
| Valsartan | 180 | 47 |
| Zolpidem Tartrate | 179 | 31 |
| Alprazolam | 178 | 48 |
| Losartan Potassium | 175 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-28
- Last updated
- 2012-09-11
Frequently asked questions
- What is Jimmy Chang's NPI number?
- Jimmy Chang's National Provider Identifier (NPI) is 1629082300, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jimmy Chang's specialty?
- Jimmy Chang is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Jimmy Chang located?
- Jimmy Chang's practice location on file with NPPES is 657 Willow Grove St, Hackettstown, NJ 07840-1868.
- What is Jimmy Chang's phone number?
- The practice phone number listed in the NPPES registry for Jimmy Chang is (908) 850-7800.
- Does Jimmy Chang accept Medicare?
- Jimmy Chang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jimmy Chang's NPI active?
- Yes — Jimmy Chang's NPI (1629082300) is active in the NPPES registry as of the last update on 2012-09-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.