Andrew Chang, MD,MPH,MA
NPI 1083889117 · Allergy & Immunology (Internal Medicine) Physician · Brooklyn, NY
Enrolled with Medicare as Practitioner - Allergy/Immunology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Andrew Chang, MD,MPH,MA is a Allergy & Immunology (Internal Medicine) Physician provider in Brooklyn, NY (NPI 1083889117).
Provider details
- NPI number
- 1083889117
- Entity type
- Individual
- Primary specialty
- Allergy & Immunology (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD,MPH,MA
- Sex
- Male
- Sole proprietor
- No
- License
- 258231-1 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
18 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
434 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) |
|---|---|---|
| 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 | 144 | $16 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 110 | $138 |
| Prolonged Office Or Other Outpatient Evaluation and Management Service(s) Beyond the Maximum Required Time of the Primary Procedure Which Has Been Selected Using Total Time on the Date of the Primary Service; Each Additional 15 Minutes By the Physician OrG2212 | 78 | $30 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 62 | $88 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 24 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 39 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 105 | 45 |
| Levothyroxine Sodium | 67 | 23 |
| Gabapentin | 64 | 19 |
| Omeprazole | 63 | 21 |
| Trazodone Hcl | 61 | 22 |
| Rosuvastatin Calcium | 52 | 22 |
| Valsartan | 46 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2008-04-29
- Last updated
- 2023-10-05
- Certified
- 2023-10-05
Frequently asked questions
- What is Andrew Chang's NPI number?
- Andrew Chang's National Provider Identifier (NPI) is 1083889117, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Andrew Chang's specialty?
- Andrew Chang is listed in the NPPES registry with a primary specialty of Allergy & Immunology (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Andrew Chang located?
- Andrew Chang's practice location on file with NPPES is 451 Clarkson Ave, Brooklyn, NY 11203-2054.
- What is Andrew Chang's phone number?
- The practice phone number listed in the NPPES registry for Andrew Chang is (718) 245-3325.
- Does Andrew Chang accept Medicare?
- Andrew Chang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Andrew Chang's NPI active?
- Yes — Andrew Chang's NPI (1083889117) is active in the NPPES registry as of the last update on 2023-10-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.