Grace Chang
NPI 1508144783 · Hematology & Oncology Physician · Santa Monica, CA
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Grace Chang is a Hematology & Oncology Physician provider in Santa Monica, CA (NPI 1508144783).
Provider details
- NPI number
- 1508144783
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Sex
- Female
- Sole proprietor
- No
- License
- A123034 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
14 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
1,454 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 215 | $139 |
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count85025 | 199 | $8 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 193 | $194 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 145 | $9 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 127 | $81 |
| Blood Test, Comprehensive Group of Blood Chemicals80053 |
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 |
|---|---|---|
| Apixabanbrand: Eliquis | 41 | 16 |
| Anastrozole | 37 | 18 |
| Tbo-Filgrastimbrand: Granix | 31 | 11 |
| Prochlorperazine Maleate | 27 | 23 |
| Dexamethasone | 26 | 16 |
| Ondansetronbrand: Ondansetron Odt | 25 | 21 |
| Rivaroxabanbrand: Xarelto | 23 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$435 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
- 2011-07-22
- Last updated
- 2025-05-27
- Certified
- 2024-01-10
Frequently asked questions
- What is Grace Chang's NPI number?
- Grace Chang's National Provider Identifier (NPI) is 1508144783, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Grace Chang's specialty?
- Grace Chang is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Grace Chang located?
- Grace Chang's practice location on file with NPPES is 2021 Santa Monica Blvd Ste 560w, Santa Monica, CA 90404-2208.
- What is Grace Chang's phone number?
- The practice phone number listed in the NPPES registry for Grace Chang is (310) 453-5654.
- Does Grace Chang accept Medicare?
- Grace Chang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Grace Chang's NPI active?
- Yes — Grace Chang's NPI (1508144783) is active in the NPPES registry as of the last update on 2025-05-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.