Yu-Wen Chang, DO
Family Medicine Physician · Menlo Park, CA
Yu-Wen Chang, DO is a family medicine physician with a practice address in Menlo Park, California, and NPI 1598258154, issued on Jun 8, 2018. Check the license (California 20A17804, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Yu-Wen Chang
- Credential
- DO
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 20A17804 CA
Self-reported in NPPES; status is on the state search - Practice location
- 321 Middlefield RD Ste 260, Menlo Park, CA 94025
- Phone
- (650) 498-3522
- Enumerated
- Jun 8, 2018
- Record last updated
- Apr 17, 2024
- Medicare enrollment
- Enrolled (PECOS I20210909003508); accepts Medicare assignment
- Medical or professional school
- Touro Un College Of Osteopathic Medicine, Vallejo, 2018
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 321 Middlefield RD Ste 260
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Charlie Michaudet, MDSports Medicine (Family Medicine) Physician1770802647
- Joellen Vanzander, MDDermatology Physician1881819019
Verify Yu-Wen Chang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A17804Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
61% fewer Medicare Part D claims than the average family medicine physician in 2024
1,365 Medicare Part D claims for 212 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium147 claims
- Amlodipine Besylate109 claims
- Levothyroxine Sodium71 claims
- Rosuvastatin Calcium57 claims
- Losartan Potassium55 claims
- Tamsulosin Hcl36 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
- University Healthcare AllianceMenlo Park, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Yu-Wen Chang among 17,133 family medicine physician records in California
Yu-Wen Chang, DO is one of 17,133 family medicine 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 2018, is newer than 82% of them.
- NPI issued2018 · 82% of these records are older, 15% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2018 · median 2005 among the 10,652 with a school on file
- Record last updated2024 · 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 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
12 family medicine physician records list a practice address in Menlo Park
They are 12 of the 1,265 NPPES records with a practice address in Menlo Park, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Menlo Park → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Sapna Dalal, MDMenlo Park, CA 940251144380338
- Diana Farid, M.D.Menlo Park, CA 940251912123175
- Daniel Huie, MDMenlo Park, CA 940251295794725
- Kewmars Keyvani, MDMenlo Park, CA 940251093456238
- Judy Kim, MDMenlo Park, CA 940251306131925
- Ian Kroes, MDMenlo Park, CA 940251437263068
- Kathryn Middleton, DOMenlo Park, CA 940251417539503
- Helen Pillsbury, MDMenlo Park, CA 940251073550224
Common questions
What is Yu-Wen Chang, DO's NPI number?
Yu-Wen Chang, DO's National Provider Identifier (NPI) is 1598258154, issued on Jun 8, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Yu-Wen Chang, DO located?
The NPPES record lists a practice address at 321 Middlefield RD Ste 260, Menlo Park, CA, 94025. Phone: (650) 498-3522. Providers update this record themselves, so call before visiting.
How can I verify Yu-Wen Chang, DO's license?
NPPES lists California license number 20A17804, 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 Yu-Wen Chang, DO prescribe under Medicare Part D?
In 2024, Yu-Wen Chang, DO had 1,365 Medicare Part D claims for 212 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.