Yi-Ju Chen, M.D.
Endocrinology, Diabetes & Metabolism Physician · Monterey Park, CA
Yi-Ju Chen, M.D. is an endocrinology, diabetes & metabolism physician with a practice address in Monterey Park, California, and NPI 1396361093, issued on Jun 19, 2020. Check the license (California A183127, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Yi-Ju Chen
- Credential
- M.D.
- Primary taxonomy
- Endocrinology, Diabetes & Metabolism Physician 207RE0101X
- License numbers
- A183127 CA
MT221716 PA
Self-reported in NPPES; status is on the state search - Practice location
- 201 N Garfield Ave Ste 203, Monterey Park, CA 91754
- Phone
- (626) 307-7397
- Enumerated
- Jun 19, 2020
- Record last updated
- May 21, 2026
- Entity
- Type 1 · individual
8 nearest endocrinology, diabetes & metabolism physician records → All 1,131 in California → Look up another NPI →
Verify Yi-Ju Chen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A183127Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
92% fewer Medicare Part D claims than the average endocrinology, diabetes & metabolism physician in 2024
205 Medicare Part D claims for 40 beneficiaries, against an average of 2,630 among the 8,223 providers of this specialty who prescribed in Part D. Brand-name drugs were 29% of claims.
Most prescribed
- Levothyroxine Sodium38 claims
- Hydrocortisone15 claims
- Jardiance15 claims
- Ezetimibe13 claims
- Atorvastatin Calcium12 claims
- Amlodipine Besylate11 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: $42.98
2 payments; by number, the most common kind was food and beverage; the largest payer was Lilly USA, LLC. The 5,661 providers of this specialty with any payment received $5,742.15 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.
Yi-Ju Chen among 1,131 endocrinology, diabetes & metabolism physician records in California
Yi-Ju Chen, M.D. is one of 1,131 endocrinology, diabetes & metabolism physician records with a practice address in California. 84% 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 96% of them.
- NPI issued2020 · 96% of these records are older, 2% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileNo · 69% of these records are
- Record last updated2026 · 57% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RE0101X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Endocrinology, Diabetes & Metabolism Physician providers in California
There are 1,131 endocrinology, diabetes & metabolism physician records in California.
All 1,131 in California → Every provider in Monterey Park → Endocrinology, Diabetes & Metabolism Physician nationwide →
The 8 endocrinology, diabetes & metabolism physician records with the nearest ZIP codes
- Justin Do, DOMonterey Park, CA 917541952861049
- Sadiq Mandilawi, MDLa Verne, CA 917501295716736
- Jeffrey Mason, M.D.La Verne, CA 917501255308912
- Rucha Mehta, MDPomona, CA 917661184725749
- Airani Sathananthan, MDPomona, CA 917661063422459
- Seerat Anand, M.D.Pomona, CA 917671417575085
- Prasad Jeereddi, MDPomona, CA 917671821058470
- Ewa Konca, MDPomona, CA 917671134197528
Common questions
What is Yi-Ju Chen, M.D.'s NPI number?
Yi-Ju Chen, M.D.'s National Provider Identifier (NPI) is 1396361093, issued on Jun 19, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Yi-Ju Chen, M.D. located?
The NPPES record lists a practice address at 201 N Garfield Ave Ste 203, Monterey Park, CA, 91754. Phone: (626) 307-7397. Providers update this record themselves, so call before visiting.
How can I verify Yi-Ju Chen, M.D.'s license?
NPPES lists California license number A183127, 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 Yi-Ju Chen, M.D. prescribe under Medicare Part D?
In 2024, Yi-Ju Chen, M.D. had 205 Medicare Part D claims for 40 beneficiaries; the average among endocrinology, diabetes & metabolism physician prescribers was 2,630. 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.