Grace Chang
Hematology & Oncology Physician · Santa Monica, CA
Grace Chang is a hematology & oncology physician with a practice address in Santa Monica, California, and NPI 1508144783, issued on Jul 22, 2011. Check the license (California A123034, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Grace Chang
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- A123034 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2021 Santa Monica Blvd Ste 560W, Santa Monica, CA 90404
- Phone
- (310) 453-5654
- Enumerated
- Jul 22, 2011
- Record last updated
- May 27, 2025
- Fax
- (310) 453-6885
- Medicare enrollment
- Enrolled (PECOS I20171106003115); accepts Medicare assignment
- Medical or professional school
- New York Medical College, 2011
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 1,583 in California → Look up another NPI →
Verify Grace Chang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A123034Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
30% fewer Medicare Part D claims than the average hematology & oncology physician in 2024
616 Medicare Part D claims for 225 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 30% of claims. 34 claims were for opioids.
Most prescribed
- Eliquis41 claims
- Anastrozole37 claims
- Granix31 claims
- Prochlorperazine Maleate27 claims
- Dexamethasone26 claims
- Ondansetron Odt25 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $435.04
4 payments; by number, the most common kind was food and beverage; the largest payer was E.R. Squibb & Sons, L.L.C. The 8,560 providers of this specialty with any payment received $7,481.41 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Southern California Permanente Medical GroupLos Angeles, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Grace Chang among 1,583 hematology & oncology physician records in California
Grace Chang is one of 1,583 hematology & oncology physician records with a practice address in California. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2011, is newer than 72% of them.
- NPI issued2011 · 72% of these records are older, 25% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 71% of these records are
- Graduated2011 · median 2003 among the 1,124 with a school on file
- Record last updated2025 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0003X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hematology & Oncology Physician providers in California
There are 1,583 hematology & oncology physician records in California.
All 1,583 in California → Every provider in Santa Monica → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Thompson Adams, MDSanta Monica, CA 904041407880891
- Aditya Bardia, MDSanta Monica, CA 904041639210107
- Peter Boasberg, MDSanta Monica, CA 904041417982331
- Richard Finn, MDSanta Monica, CA 904041811912074
- Sean Fischer, M.D.Santa Monica, CA 904041801842943
- Omid Hamid, M.D.Santa Monica, CA 904041215966775
- Kathryn Henick, M.D.Santa Monica, CA 904041912972779
- Silvana Martino, D.O.Santa Monica, CA 904041073626362
Common questions
What is Grace Chang's NPI number?
Grace Chang's National Provider Identifier (NPI) is 1508144783, issued on Jul 22, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Grace Chang located?
The NPPES record lists a practice address at 2021 Santa Monica Blvd Ste 560W, Santa Monica, CA, 90404. Phone: (310) 453-5654. Providers update this record themselves, so call before visiting.
How can I verify Grace Chang's license?
NPPES lists California license number A123034, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Grace Chang prescribe under Medicare Part D?
In 2024, Grace Chang had 616 Medicare Part D claims for 225 beneficiaries; the average among hematology & oncology physician prescribers was 877. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.