Jenny Jun
Rheumatology Physician · Los Angeles, CA
Jenny Jun is a rheumatology physician with a practice address in Los Angeles, California, and NPI 1285044925, issued on May 3, 2014. Check the license (California A141746, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Jenny Jun
- Primary taxonomy
- Rheumatology Physician 207RR0500X
- License number
- A141746 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1520 San Pablo St Ste 1000, Los Angeles, CA 90033
- Phone
- (323) 442-5100
- Enumerated
- May 3, 2014
- Record last updated
- Nov 23, 2020 (not updated in 6 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20170425003122); accepts Medicare assignment
- Medical or professional school
- Warren Alpert Medical School Of Brown University, 2014
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest rheumatology physician records → All 926 in California → Look up another NPI →
Also registered at 1520 San Pablo St Ste 1000
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Christine Alexopoulos, PA-CMedical Physician Assistant1235862210
- Vahe Arabian, PACMedical Physician Assistant1295799021
Verify Jenny Jun in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A141746Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
77% fewer Medicare Part D claims than the average rheumatology physician in 2024
455 Medicare Part D claims for 104 beneficiaries, against an average of 1,978 among the 6,301 providers of this specialty who prescribed in Part D. Brand-name drugs were 30% of claims.
Most prescribed
- Gabapentin48 claims
- Hydroxychloroquine Sulfate43 claims
- Methotrexate40 claims
- Diclofenac Sodium22 claims
- Enbrel16 claims
- Mycophenolate Mofetil13 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: $211.80
11 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 4,486 providers of this specialty with any payment received $8,538.33 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.
Bills Medicare through one group practice
- Usc Care Medical Group IncLos Angeles, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Jenny Jun among 926 rheumatology physician records in California
Jenny Jun 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 2014, is newer than 79% of them.
- NPI issued2014 · 79% of these records are older, 18% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated2014 · median 2003 among the 641 with a school on file
- Record last updated2020 · 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 Los Angeles → Rheumatology Physician nationwide →
The 8 rheumatology physician records with the nearest ZIP codes
- Daniel Arkfeld, M.D.Los Angeles, CA 900331780610105
- Glenn Ehresmann, M.D.Los Angeles, CA 900331043248727
- David Horwitz, M.D.Los Angeles, CA 900331457389918
- Sheila Lezcano, M.D.Los Angeles, CA 900331295098390
- Richard Panush, M.D.Los Angeles, CA 900331164458188
- Francisco Quismorio, M.D.Los Angeles, CA 900331386941516
- Thomas Romano, M.D.Los Angeles, CA 900331023031184
- Stavros Savvas, M.D.Los Angeles, CA 900331760753479
Common questions
What is Jenny Jun's NPI number?
Jenny Jun's National Provider Identifier (NPI) is 1285044925, issued on May 3, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Jenny Jun located?
The NPPES record lists a practice address at 1520 San Pablo St Ste 1000, Los Angeles, CA, 90033. Phone: (323) 442-5100. Providers update this record themselves, so call before visiting.
How can I verify Jenny Jun's license?
NPPES lists California license number A141746, 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 Jenny Jun prescribe under Medicare Part D?
In 2024, Jenny Jun had 455 Medicare Part D claims for 104 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.