Matthew Chang
NPI 1447712351 · Student in an Organized Health Care Education/Training Program · Buffalo, NY
Enrolled with Medicare as Practitioner - Vascular Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Matthew Chang is a Student in an Organized Health Care Education/Training Program provider in Buffalo, NY (NPI 1447712351).
Provider details
- NPI number
- 1447712351
- Entity type
- Individual
- Primary specialty
- Student in an Organized Health Care Education/Training ProgramStudent, Health Care
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
7 yrs in NPPES registry
- Profile completeness25% of score
83% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
250 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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 Both Sides of Head and Neck Blood Flow93880 | 47 | $176 |
| Complete Ultrasound Study of Arm and Leg Arteries93923 | 46 | $114 |
| Ultrasound Study of One Arm Or Leg Veins With Compression and Maneuvers93971 | 36 | $20 |
| Ultrasound of Both Sides of Head and Neck Blood Flow93880 | 25 | $36 |
| Ultrasound Study of Arm Or Leg Veins With Compression and Maneuvers93970 | 23 | $31 |
| Ultrasound Study of One Arm Or Leg Veins With Compression and Maneuvers93971 | 20 | $104 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 1 distinct drug on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Clopidogrel Bisulfatebrand: Clopidogrel | 15 | 11 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$32 across 2 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (1)
- 100 High StBuffalo, NY 14203-1126Phone: (716) 859-4207
Registry dates
- Enumerated
- 2019-04-01
- Last updated
- 2019-04-01
Frequently asked questions
- What is Matthew Chang's NPI number?
- Matthew Chang's National Provider Identifier (NPI) is 1447712351, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Matthew Chang's specialty?
- Matthew Chang is listed in the NPPES registry with a primary specialty of Student in an Organized Health Care Education/Training Program (Student, Health Care).
- Where is Matthew Chang located?
- Matthew Chang's practice location on file with NPPES is 100 High St, Buffalo, NY 14203-1126.
- What is Matthew Chang's phone number?
- The practice phone number listed in the NPPES registry for Matthew Chang is (716) 859-4207.
- Does Matthew Chang accept Medicare?
- Matthew Chang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Matthew Chang's NPI active?
- Yes — Matthew Chang's NPI (1447712351) is active in the NPPES registry as of the last update on 2019-04-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.