Nga Chang, MD
NPI 1538222039 · General Practice Physician · New York, NY
Enrolled with Medicare as Practitioner - General Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nga Chang, MD is a General Practice Physician provider in New York, NY (NPI 1538222039).
Provider details
- NPI number
- 1538222039
- Entity type
- Individual
- Primary specialty
- General Practice PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 148111 (NY)
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
586 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 Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 501 | $101 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 30 | $142 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 29 | $144 |
| Administration of Influenza Virus VaccineG0008 | 26 | $36 |
Typical Medicare-allowed amounts for these services range $36–$144 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 62 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 181 | 51 |
| Losartan Potassium | 180 | 50 |
| Rosuvastatin Calcium | 135 | 39 |
| Levocetirizine Dihydrochloride | 129 | 62 |
| Metoprolol Succinate | 109 | 30 |
| Amlodipine Besylate | 102 | 30 |
| Allopurinol | 101 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-12-18
- Last updated
- 2013-08-08
Frequently asked questions
- What is Nga Chang's NPI number?
- Nga Chang's National Provider Identifier (NPI) is 1538222039, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nga Chang's specialty?
- Nga Chang is listed in the NPPES registry with a primary specialty of General Practice Physician (Allopathic & Osteopathic Physicians).
- Where is Nga Chang located?
- Nga Chang's practice location on file with NPPES is 81 Elizabeth St, New York, NY 10013-4729.
- What is Nga Chang's phone number?
- The practice phone number listed in the NPPES registry for Nga Chang is (212) 431-7098.
- Does Nga Chang accept Medicare?
- Nga Chang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nga Chang's NPI active?
- Yes — Nga Chang's NPI (1538222039) is active in the NPPES registry as of the last update on 2013-08-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.