William Liu, M.D.
Rheumatology Physician · Redondo Beach, CA
William Liu, M.D. is a rheumatology physician with a practice address in Redondo Beach, California, and NPI 1013022722, issued on Aug 20, 2006. Check the license (California G51849, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- William Liu
- Credential
- M.D.
- Primary taxonomy
- Rheumatology Physician 207RR0500X
- License number
- G51849 CA
Self-reported in NPPES; status is on the state search - Practice location
- 520 N Prospect Ave Ste 103, Redondo Beach, CA 90277
- Phone
- (310) 376-8816
- Enumerated
- Aug 20, 2006
- Record last updated
- Apr 16, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (310) 374-2806
- Medicaid ID
- WG51849O CA
- Medicare enrollment
- Enrolled (PECOS I20050225000503); accepts Medicare assignment
- Medical or professional school
- Loyola University Of Chicago, Stritch School Of Medicine, 1979
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest rheumatology physician records → All 926 in California → Look up another NPI →
Also registered at 520 N Prospect Ave Ste 103
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify William Liu in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G51849Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
64% more Medicare Part D claims than the average rheumatology physician in 2024
3,251 Medicare Part D claims for 521 beneficiaries, against an average of 1,978 among the 6,301 providers of this specialty who prescribed in Part D. 547 claims were for opioids.
Most prescribed
- Diclofenac Sodium385 claims
- Hydrocodone-Acetaminophen263 claims
- Celecoxib247 claims
- Alendronate Sodium160 claims
- Methotrexate157 claims
- Tramadol Hcl132 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: $593.70
9 payments; by number, the most common kind was food and beverage; the largest payer was Janssen Biotech, Inc. The 4,486 providers of this specialty with any payment received $8,538.33 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
- Providence Medical InstituteLaguna Niguel, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William Liu among 926 rheumatology physician records in California
William Liu, M.D. is one of 926 rheumatology physician records with a practice address in California. 81% 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 6% of them.
- NPI issued2006 · 6% of these records are older, 55% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated1979 · median 2003 among the 641 with a school on file
- Record last updated2021 · 62% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RR0500X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Rheumatology Physician providers in California
There are 926 rheumatology physician records in California.
All 926 in California → Every provider in Redondo Beach → Rheumatology Physician nationwide →
The 8 rheumatology physician records with the nearest ZIP codes
- John Hoying, M.D.Redondo Beach, CA 902771417991662
- Connie Teng, MDRedondo Beach, CA 902771104951235
- Arthur Huberman, MDVenice, CA 902911356412266
- Daniel Furst, MDInglewood, CA 903011821023599
- William Hong, MDInglewood, CA 903011245306745
- Purnell Kirkland, M.D.Inglewood, CA 903011629133368
- Ginder Marshall, M.D.Inglewood, CA 903011669521076
- Mark Borigini, M.D.Downey, CA 902421043257082
Common questions
What is William Liu, M.D.'s NPI number?
William Liu, M.D.'s National Provider Identifier (NPI) is 1013022722, issued on Aug 20, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William Liu, M.D. located?
The NPPES record lists a practice address at 520 N Prospect Ave Ste 103, Redondo Beach, CA, 90277. Phone: (310) 376-8816. Providers update this record themselves, so call before visiting.
How can I verify William Liu, M.D.'s license?
NPPES lists California license number G51849, 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 Liu, M.D. prescribe under Medicare Part D?
In 2024, William Liu, M.D. had 3,251 Medicare Part D claims for 521 beneficiaries; the average among rheumatology physician prescribers was 1,978. 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.