William A. Chua, M.D.
Hematology & Oncology Physician · Montebello, CA
William A. Chua, M.D. is a hematology & oncology physician with a practice address in Montebello, California, and NPI 1639199656, issued on Jul 20, 2006. Check the license (California A34309, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- William A. Chua
- Credential
- M.D.
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- A34309 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3111 W Beverly Blvd, Montebello, CA 90640
- Phone
- (323) 728-0671
- Enumerated
- Jul 20, 2006
- Record last updated
- Jan 25, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (323) 728-8355
- Medicare enrollment
- Enrolled (PECOS I20130308000401); may accept Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 1,583 in California → Look up another NPI →
Also registered at 3111 W Beverly Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Lilian Chuang, M.D.Pediatrics Physician1326068354
Verify William A. Chua in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A34309Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.6 times the Medicare Part D claims of the average hematology & oncology physician in 2024
2,314 Medicare Part D claims for 163 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. 33 claims were for opioids.
Most prescribed
- Atorvastatin Calcium128 claims
- Amlodipine Besylate104 claims
- Metformin Hcl70 claims
- Levothyroxine Sodium69 claims
- Gabapentin67 claims
- Pantoprazole Sodium55 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: $694.42
19 payments; by number, the most common kind was food and beverage; the largest payer was Bayer Healthcare Pharmaceuticals Inc. 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 2 group practices
- Legacy Marketing Worldwide IncLos Angeles, CA
- Perpetual Mobile Medical Group IncLos Angeles, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William A. Chua among 1,583 hematology & oncology physician records in California
William A. Chua, M.D. 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 2006, is newer than 8% of them.
- NPI issued2006 · 8% of these records are older, 54% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 71% of these records are
- Graduated1972 · median 2003 among the 1,124 with a school on file
- Record last updated2010 · 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 Montebello → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Ravin Rupani, M.D.Montebello, CA 906401730379728
- Stanley Rubin, M.D.La Mirada, CA 906381861433450
- Jeremy Chuang, MDWhittier, CA 906021902269541
- Jack Freimann, M.D.Whittier, CA 906021306953021
- Edwin Lin, M.D.Whittier, CA 906021477755288
- Andrew Pham, MDWhittier, CA 906021538588868
- Merrill Shum, M.D.Whittier, CA 906021982819702
- Lisa Wang, M.D.Whittier, CA 906021356549331
Common questions
What is William A. Chua, M.D.'s NPI number?
William A. Chua, M.D.'s National Provider Identifier (NPI) is 1639199656, issued on Jul 20, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William A. Chua, M.D. located?
The NPPES record lists a practice address at 3111 W Beverly Blvd, Montebello, CA, 90640. Phone: (323) 728-0671. Providers update this record themselves, so call before visiting.
How can I verify William A. Chua, M.D.'s license?
NPPES lists California license number A34309, 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 William A. Chua, M.D. prescribe under Medicare Part D?
In 2024, William A. Chua, M.D. had 2,314 Medicare Part D claims for 163 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.