NPPES file of Aug 9, 2026

Michelle Lam Ching-Wen Chu, MD

Rheumatology Physician · Modesto, CA

Michelle Lam Ching-Wen Chu, MD is a rheumatology physician with a practice address in Modesto, California, and NPI 1285862573, issued on Jun 25, 2009. Check the license (California A115513, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1285862573
Name
Michelle Lam Ching-Wen Chu
Credential
MD
Primary taxonomy
Rheumatology Physician 207RR0500X
License number
A115513 CA
Self-reported in NPPES; status is on the state search
Practice location
1541 Florida Ave Ste 200, Modesto, CA 95350
Phone
(209) 577-3388
Enumerated
Jun 25, 2009
Record last updated
Jan 10, 2022
Medicare enrollment
Enrolled (PECOS I20140909000206); accepts Medicare assignment
Medical or professional school
Medical College Of Wisconsin, 2009
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 1541 Florida Ave Ste 200

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Bradley Blankenship, M.D.Family Medicine Physician1619923810
  2. Rohini Bogineni, MDSurgery Physician1255506903
  3. Erick Cartaya Aguilar, NPNurse Practitioner1710435524
  4. Rakhi Chohan, MSN, FNP-CFamily Nurse Practitioner1679215842
  5. Elizabeth Conn, NPFamily Nurse Practitioner1891137725
  6. Suzanne Dietrich, RDRegistered Dietitian1780821710

Verify Michelle Lam Ching-Wen Chu in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A115513
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

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44% more Medicare Part D claims than the average rheumatology physician in 2024

2,856 Medicare Part D claims for 585 beneficiaries, against an average of 1,978 among the 6,301 providers of this specialty who prescribed in Part D. Brand-name drugs were 27% of claims.

  1. Michelle Chu2,856
  2. Specialty average1,978

Most prescribed

  1. Methotrexate498 claims
  2. Hydroxychloroquine Sulfate410 claims
  3. Prednisone251 claims
  4. Leflunomide229 claims
  5. Sulfasalazine111 claims
  6. Amjevita(Cf) Autoinjector103 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

  1. Permanente Medical Group IncModesto, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Rheumatology Physician providers in California

There are 926 rheumatology physician records in California.

Other rheumatology physician records in California

  1. Khurram Abbass, MDSan Jose, CA1154455178
  2. Mai Abdelnabi, MDSan Francisco, CA1013394980
  3. Brian Abe, MD, PHDStanford, CA1104262708
  4. Thomas Abel, MDMonte Sereno, CA1871679399
  5. Feruza AbraamyanRoseville, CA1124769278
  6. Thomas Adamson, M.D.San Diego, CA1639187057
  7. Sana Afroz, MDMoreno Valley, CA1356724074
  8. Ishita Aggarwal, MDSan Francisco, CA1518385699
  9. Atul Agrawal, MDAntioch, CA1528146016
  10. Bikramjit Ahluwalia, MDApple Valley, CA1669402467

Common questions

What is Michelle Lam Ching-Wen Chu, MD's NPI number?

Michelle Lam Ching-Wen Chu, MD's National Provider Identifier (NPI) is 1285862573, issued on Jun 25, 2009. An NPI identifies a provider in billing; it is not a license.

Where is Michelle Lam Ching-Wen Chu, MD located?

The NPPES record lists a practice address at 1541 Florida Ave Ste 200, Modesto, CA, 95350. Phone: (209) 577-3388. Providers update this record themselves, so call before visiting.

How can I verify Michelle Lam Ching-Wen Chu, MD's license?

NPPES lists California license number A115513, 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 Michelle Lam Ching-Wen Chu, MD prescribe under Medicare Part D?

In 2024, Michelle Lam Ching-Wen Chu, MD had 2,856 Medicare Part D claims for 585 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.