Karen Thanh Le, M.D.
Endocrinology, Diabetes & Metabolism Physician · Downey, CA
Karen Thanh Le, M.D. is an endocrinology, diabetes & metabolism physician with a practice address in Downey, California, and NPI 1427340645, issued on May 5, 2011. Check the license (California A120682, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Karen Thanh Le
- Credential
- M.D.
- Primary taxonomy
- Endocrinology, Diabetes & Metabolism Physician 207RE0101X
- License number
- A120682 CA
Self-reported in NPPES; status is on the state search - Practice location
- 9449 Imperial Hwy Ste 315, Downey, CA 90242
- Phone
- (562) 657-2375
- Enumerated
- May 5, 2011
- Record last updated
- Aug 8, 2023
- Medicare enrollment
- Enrolled (PECOS I20121105000320); accepts Medicare assignment
- Medical or professional school
- Texas A & M University System, Hsc, College Of Medicine, 2010
- Entity
- Type 1 · individual
8 nearest endocrinology, diabetes & metabolism physician records → All 1,131 in California → Look up another NPI →
Verify Karen Thanh Le in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A120682Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
44% fewer Medicare Part D claims than the average endocrinology, diabetes & metabolism physician in 2024
1,475 Medicare Part D claims for 320 beneficiaries, against an average of 2,630 among the 8,223 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of claims.
Most prescribed
- Levothyroxine Sodium343 claims
- Methimazole114 claims
- Atorvastatin Calcium60 claims
- Alendronate Sodium58 claims
- Losartan Potassium55 claims
- Cinacalcet Hcl53 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 GroupBellflower, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Karen Thanh Le among 1,131 endocrinology, diabetes & metabolism physician records in California
Karen Thanh Le, 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 2011, is newer than 72% of them.
- NPI issued2011 · 72% of these records are older, 26% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated2010 · median 2003 among the 779 with a school on file
- Record last updated2023 · 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 Downey → Endocrinology, Diabetes & Metabolism Physician nationwide →
The 8 endocrinology, diabetes & metabolism physician records with the nearest ZIP codes
- Elisa Hsia, MDDowney, CA 902421073711701
- David Berger, MDDowney, CA 902411881683944
- Christine Kha, DODowney, CA 902411851784763
- Charles Holzner, M.D.Downey, CA 902401861439465
- Catherine Monahan, NURSE PRACTITIONEREl Segundo, CA 902451962847400
- Xin Chen, M.D.Hawthorne, CA 902501033573241
- Neil Goldberg, M.D.Culver City, CA 902321780722181
- Tran Ly, M.D.Compton, CA 902221649422924
Common questions
What is Karen Thanh Le, M.D.'s NPI number?
Karen Thanh Le, M.D.'s National Provider Identifier (NPI) is 1427340645, issued on May 5, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Karen Thanh Le, M.D. located?
The NPPES record lists a practice address at 9449 Imperial Hwy Ste 315, Downey, CA, 90242. Phone: (562) 657-2375. Providers update this record themselves, so call before visiting.
How can I verify Karen Thanh Le, M.D.'s license?
NPPES lists California license number A120682, 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 Karen Thanh Le, M.D. prescribe under Medicare Part D?
In 2024, Karen Thanh Le, M.D. had 1,475 Medicare Part D claims for 320 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.