Andrew Ren, MD
Internal Medicine Physician · Los Angeles, CA
Andrew Ren, MD is an internal medicine physician with a practice address in Los Angeles, California, and NPI 1346475928, issued on May 26, 2009. Check the license (California A106267, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Andrew Ren
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A106267 CA
Self-reported in NPPES; status is on the state search - Practice location
- 4950 W Sunset Blvd, Los Angeles, CA 90027
- Phone
- (323) 783-3810
- Enumerated
- May 26, 2009
- Record last updated
- Nov 2, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20091214000037); accepts Medicare assignment
- Medical or professional school
- Rush Medical College Of Rush University, 2007
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 4950 W Sunset Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Andrew Ren in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A106267Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
90% fewer Medicare Part D claims than the average internal medicine physician in 2024
327 Medicare Part D claims for 113 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims.
Most prescribed
- Furosemide28 claims
- Atorvastatin Calcium22 claims
- Pradaxa19 claims
- Amlodipine Besylate16 claims
- Clopidogrel13 claims
- Prednisone11 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
- Southern California Permanente Medical GroupHarbor City, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Andrew Ren among 17,696 internal medicine physician records in California
Andrew Ren, MD 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 2009, is newer than 60% of them.
- NPI issued2009 · 60% of these records are older, 37% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2007 · median 2004 among the 11,065 with a school on file
- Record last updated2021 · 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).
1,423 internal medicine physician records list a practice address in Los Angeles
They are 1,423 of the 69,537 NPPES records with a practice address in Los Angeles, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Los Angeles → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
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- Lyn Pestana, MDLos Angeles, CA 900271013088996
- Edward Quiming, MDLos Angeles, CA 900271497826465
Common questions
What is Andrew Ren, MD's NPI number?
Andrew Ren, MD's National Provider Identifier (NPI) is 1346475928, issued on May 26, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Andrew Ren, MD located?
The NPPES record lists a practice address at 4950 W Sunset Blvd, Los Angeles, CA, 90027. Phone: (323) 783-3810. Providers update this record themselves, so call before visiting.
How can I verify Andrew Ren, MD's license?
NPPES lists California license number A106267, 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 Andrew Ren, MD prescribe under Medicare Part D?
In 2024, Andrew Ren, MD had 327 Medicare Part D claims for 113 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.