Wencheng Jen, M.D.
Internal Medicine Physician · Arcadia, CA
Wencheng Jen, M.D. is an internal medicine physician with a practice address in Arcadia, California, and NPI 1811915481, issued on Jul 18, 2006. Check the license (California A70481, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Wencheng Jen
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A70481 CA
Self-reported in NPPES; status is on the state search - Practice location
- 817 S 1St Ave Unit A, Arcadia, CA 91006
- Phone
- (626) 416-3051
- Enumerated
- Jul 18, 2006
- Record last updated
- Jan 28, 2026
- Fax
- (626) 478-1068
- Medicaid ID
- 00A704810 CA
- Medicare enrollment
- Enrolled (PECOS I20040316001455); accepts Medicare assignment
- Medical or professional school
- University Of Southern California Keck School Of Medicine, 1998
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Verify Wencheng Jen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A70481Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
7% fewer Medicare Part D claims than the average internal medicine physician in 2024
2,945 Medicare Part D claims for 177 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims. 28 claims were for opioids.
Most prescribed
- Atorvastatin Calcium276 claims
- Losartan Potassium175 claims
- Amlodipine Besylate137 claims
- Montelukast Sodium107 claims
- Lisinopril91 claims
- Levothyroxine Sodium81 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.
Wencheng Jen among 17,696 internal medicine physician records in California
Wencheng Jen, M.D. is one of 17,696 internal medicine physician records with a practice address in California. 79% 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 5% of them.
- NPI issued2006 · 5% of these records are older, 56% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1998 · median 2004 among the 11,065 with a school on file
- Record last updated2026 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
74 internal medicine physician records list a practice address in Arcadia
They are 74 of the 2,033 NPPES records with a practice address in Arcadia, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Arcadia → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Yehuda Berenson, MDArcadia, CA 910061366402711
- Beverly Botnick, MDArcadia, CA 910061790754455
- Christine Castano, MDArcadia, CA 910061225076268
- Wen-Che Chung, MDArcadia, CA 910061891754149
- Zewdu Gebreyes, M.D.Arcadia, CA 910061366419541
- Renato Labog, M.DArcadia, CA 910061427011204
- Scott Liang, MDArcadia, CA 910061639124514
- Haig Manjikian, M.D.Arcadia, CA 910061093783813
Common questions
What is Wencheng Jen, M.D.'s NPI number?
Wencheng Jen, M.D.'s National Provider Identifier (NPI) is 1811915481, issued on Jul 18, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Wencheng Jen, M.D. located?
The NPPES record lists a practice address at 817 S 1St Ave Unit A, Arcadia, CA, 91006. Phone: (626) 416-3051. Providers update this record themselves, so call before visiting.
How can I verify Wencheng Jen, M.D.'s license?
NPPES lists California license number A70481, 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 Wencheng Jen, M.D. prescribe under Medicare Part D?
In 2024, Wencheng Jen, M.D. had 2,945 Medicare Part D claims for 177 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.