Lillian Chang, M.D.
NPI 1518498195 · Rheumatology Physician · Valhalla, NY
Enrolled with Medicare as Practitioner - Rheumatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Lillian Chang, M.D. is a Rheumatology Physician provider in Valhalla, NY (NPI 1518498195).
Provider details
- NPI number
- 1518498195
- Entity type
- Individual
- Primary specialty
- Rheumatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 339388 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
9 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 14 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisone | 80 | 35 |
| Methotrexate Sodiumbrand: Methotrexate | 55 | 20 |
| Hydroxychloroquine Sulfate | 50 | 17 |
| Leflunomide | 40 | 12 |
| Allopurinol | 36 | — |
| Colchicine | 26 | 11 |
| Upadacitinibbrand: Rinvoq | 18 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$337 across 4 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
Registry dates
- Enumerated
- 2017-03-24
- Last updated
- 2025-10-07
- Certified
- 2025-10-07
Frequently asked questions
- What is Lillian Chang's NPI number?
- Lillian Chang's National Provider Identifier (NPI) is 1518498195, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Lillian Chang's specialty?
- Lillian Chang is listed in the NPPES registry with a primary specialty of Rheumatology Physician (Allopathic & Osteopathic Physicians).
- Where is Lillian Chang located?
- Lillian Chang's practice location on file with NPPES is 100 Woods Rd, Valhalla, NY 10595-1530.
- What is Lillian Chang's phone number?
- The practice phone number listed in the NPPES registry for Lillian Chang is (914) 493-6613.
- Does Lillian Chang accept Medicare?
- Lillian Chang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Lillian Chang's NPI active?
- Yes — Lillian Chang's NPI (1518498195) is active in the NPPES registry as of the last update on 2025-10-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.