James Ducksoon Chang, M.D.
NPI 1184661878 · Cardiovascular Disease Physician · Boston, MA
Enrolled with Medicare as Practitioner - Cardiovascular Disease (cardiology) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
James Ducksoon Chang, M.D. is a Cardiovascular Disease Physician provider in Boston, MA (NPI 1184661878).
Provider details
- NPI number
- 1184661878
- Entity type
- Individual
- Primary specialty
- Cardiovascular Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 73888 (MA)
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
20 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
2,493 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) |
|---|---|---|
| Ultrasound of Heart With Color-Depicted Blood Flow, Rate, Direction and Valve Function93306 | 695 | $71 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 514 | $8 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 296 | $101 |
| Ultrasound of Heart With Color-Depicted Blood Flow, Rate and Valve Function93325 | 193 | $3 |
| Ultrasound of Heart, Follow-Up93308 | 125 | $25 |
| Ultrasound of Heart Blood Flow, Valves and Chambers, Follow-Up |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 13 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Losartan Potassium | 74 | 30 |
| Metoprolol Succinate | 59 | 29 |
| Carvedilol | 34 | 15 |
| Torsemide | 27 | 13 |
| Apixabanbrand: Eliquis | 26 | 13 |
| Amlodipine Besylate | 26 | 15 |
| Spironolactone | 26 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-06-01
- Last updated
- 2011-06-14
Frequently asked questions
- What is James Ducksoon Chang's NPI number?
- James Ducksoon Chang's National Provider Identifier (NPI) is 1184661878, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is James Ducksoon Chang's specialty?
- James Ducksoon Chang is listed in the NPPES registry with a primary specialty of Cardiovascular Disease Physician (Allopathic & Osteopathic Physicians).
- Where is James Ducksoon Chang located?
- James Ducksoon Chang's practice location on file with NPPES is 330 Brookline Avenue, Boston, MA 02215.
- What is James Ducksoon Chang's phone number?
- The practice phone number listed in the NPPES registry for James Ducksoon Chang is (617) 632-7752.
- Does James Ducksoon Chang accept Medicare?
- James Ducksoon Chang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is James Ducksoon Chang's NPI active?
- Yes — James Ducksoon Chang's NPI (1184661878) is active in the NPPES registry as of the last update on 2011-06-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.