Paul Shiu
Rheumatology Physician · San Mateo, CA
Paul Shiu is a rheumatology physician with a practice address in San Mateo, California, and NPI 1508495433, issued on Apr 3, 2020. Check the license (California 21306, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Paul Shiu
- Primary taxonomy
- Rheumatology Physician 207RR0500X
- License number
- 21306 CA
Self-reported in NPPES; status is on the state search - Practice location
- 101 S San Mateo Dr Ste 307, San Mateo, CA 94401
- Phone
- (650) 348-6011
- Enumerated
- Apr 3, 2020
- Record last updated
- May 6, 2025
- Fax
- (650) 348-6027
- Medicare enrollment
- Enrolled (PECOS I20250529003809); accepts Medicare assignment
- Medical or professional school
- Touro Un College Of Osteopathic Medicine, Vallejo, 2020
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest rheumatology physician records → All 926 in California → Look up another NPI →
Also registered at 101 S San Mateo Dr Ste 307
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Rhonda Lambert, MDRheumatology Physician1942230230
Verify Paul Shiu in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 21306Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
85% fewer Medicare Part D claims than the average rheumatology physician in 2024
302 Medicare Part D claims for 69 beneficiaries, against an average of 1,978 among the 6,301 providers of this specialty who prescribed in Part D.
Most prescribed
- Methotrexate52 claims
- Prednisone42 claims
- Allopurinol33 claims
- Hydroxychloroquine Sulfate33 claims
- Leflunomide23 claims
- Mycophenolate Mofetil21 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.
Bills Medicare through one group practice
- San Mateo Rheumatology IncSan Mateo, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Paul Shiu among 926 rheumatology physician records in California
Paul Shiu 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 2020, is newer than 95% of them.
- NPI issued2020 · 95% of these records are older, 2% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated2020 · median 2003 among the 641 with a school on file
- Record last updated2025 · 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 San Mateo → Rheumatology Physician nationwide →
The 8 rheumatology physician records with the nearest ZIP codes
- Rhonda Lambert, MDSan Mateo, CA 944011942230230
- Michael Stevens, M.D.San Mateo, CA 944011932198793
- Bryan Gescuk, M.D.San Mateo, CA 944031295815579
- David Yocum, M.D.San Mateo, CA 944041477766772
- Siba Raychaudhuri, M.D.Palo Alto, CA 943061821033275
- Brian Abe, MD, PHDStanford, CA 943051104262708
- Christine Anastasiou Perlegos, MDStanford, CA 943051881038818
- Matthew Baker, MDStanford, CA 943051518252204
Common questions
What is Paul Shiu's NPI number?
Paul Shiu's National Provider Identifier (NPI) is 1508495433, issued on Apr 3, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Paul Shiu located?
The NPPES record lists a practice address at 101 S San Mateo Dr Ste 307, San Mateo, CA, 94401. Phone: (650) 348-6011. Providers update this record themselves, so call before visiting.
How can I verify Paul Shiu's license?
NPPES lists California license number 21306, 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 Paul Shiu prescribe under Medicare Part D?
In 2024, Paul Shiu had 302 Medicare Part D claims for 69 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.