Juliana Chang
NPI 1801239009 · Rheumatology Physician · Downey, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Juliana Chang is a Rheumatology Physician provider in Downey, CA (NPI 1801239009).
Provider details
- NPI number
- 1801239009
- Entity type
- Individual
- Primary specialty
- Rheumatology PhysicianAllopathic & Osteopathic Physicians
- Sex
- Female
- Sole proprietor
- No
- License
- A146090 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
13 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
2 documented practice locations
- 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 · 24 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Methotrexate Sodiumbrand: Methotrexate | 308 | 106 |
| Hydroxychloroquine Sulfate | 282 | 113 |
| Leflunomide | 200 | 81 |
| Prednisone | 153 | 77 |
| Allopurinol | 99 | 33 |
| Sulfasalazine | 89 | 31 |
| Azathioprine | 55 | 23 |
| Tocilizumab |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$5,525 across 7 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)
- 4610 X StRoom 3203Sacramento, CA 95817-2200Phone: (916) 734-2356
Registry dates
- Enumerated
- 2013-04-08
- Last updated
- 2023-01-06
- Certified
- 2023-01-06
Frequently asked questions
- What is Juliana Chang's NPI number?
- Juliana Chang's National Provider Identifier (NPI) is 1801239009, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Juliana Chang's specialty?
- Juliana Chang is listed in the NPPES registry with a primary specialty of Rheumatology Physician (Allopathic & Osteopathic Physicians).
- Where is Juliana Chang located?
- Juliana Chang's practice location on file with NPPES is 9333 Imperial Hwy, Downey, CA 90242-2812.
- What is Juliana Chang's phone number?
- The practice phone number listed in the NPPES registry for Juliana Chang is (833) 574-2273.
- Does Juliana Chang accept Medicare?
- Juliana Chang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Juliana Chang's NPI active?
- Yes — Juliana Chang's NPI (1801239009) is active in the NPPES registry as of the last update on 2023-01-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.