Billy Le, D.O.
Hospitalist Physician · Fountain Valley, CA
Billy Le, D.O. is a hospitalist physician with a practice address in Fountain Valley, California, and NPI 1255656963, issued on Apr 6, 2010. Check the license (California 20A11949, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Billy Le
- Credential
- D.O.
- Primary taxonomy
- Hospitalist Physician 208M00000X
- License number
- 20A11949 CA
Self-reported in NPPES; status is on the state search - Practice location
- 17360 Brookhurst Street, Fountain Valley, CA 92708
- Phone
- (714) 797-1797
- Enumerated
- Apr 6, 2010
- Record last updated
- Jul 31, 2018 (not updated in 8 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20160607000677); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest hospitalist physician records → All 3,099 in California → Look up another NPI →
Also registered at 17360 Brookhurst Street
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Richard Cho, MDInternal Medicine Physician1275619983
- Constantinos Chrysostomou, MDPediatric Cardiology Physician1801868658
- Monica Hanna, D.O.Internal Medicine Physician1447870365
- Heather Hendron, RDRegistered Dietitian1770252470
- Nathan Kwong, MDInternal Medicine Physician1437654340
- Darletha Matthews, MSN, FNP-BC, RN-BCFamily Nurse Practitioner1710559315
Verify Billy Le in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A11949Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
60% fewer Medicare Part D claims than the average hospitalist physician in 2024
209 Medicare Part D claims for 96 beneficiaries, against an average of 521 among the 21,613 providers of this specialty who prescribed in Part D. 14 claims were for opioids.
Most prescribed
- Prednisone14 claims
- Eliquis13 claims
- Atorvastatin Calcium12 claims
- Hydrocodone-Acetaminophen12 claims
- Amoxicillin-Clavulanate Potass11 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
- Memorialcare Medical FoundationFountain Valley, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Billy Le among 3,099 hospitalist physician records in California
Billy Le, D.O. is one of 3,099 hospitalist physician records with a practice address in California. 90% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 44% of them.
- NPI issued2010 · 44% of these records are older, 53% newer
- In a Medicare fileYes · 90% of these records are
- In the CMS Doctors and Clinicians fileYes · 81% of these records are
- Graduated2010 · median 2010 among the 2,505 with a school on file
- Record last updated2018 · 49% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208M00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hospitalist Physician providers in California
There are 3,099 hospitalist physician records in California.
All 3,099 in California → Every provider in Fountain Valley → Hospitalist Physician nationwide →
The 8 hospitalist physician records with the nearest ZIP codes
- David Chan, D.O.Fountain Valley, CA 927081497068688
- Sara Ghazi, DOFountain Valley, CA 927081861816886
- Iris Gluzman, MDFountain Valley, CA 927081447323613
- Yu-Nan Hsu, D.OFountain Valley, CA 927081922382407
- Tony Khan, DOFountain Valley, CA 927081255625786
- Sapna Mehta, DOFountain Valley, CA 927081477847382
- Robert Neilan, M.D.Fountain Valley, CA 927081689763724
- Vina Nguyen, M. D.Fountain Valley, CA 927081013250497
Common questions
What is Billy Le, D.O.'s NPI number?
Billy Le, D.O.'s National Provider Identifier (NPI) is 1255656963, issued on Apr 6, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Billy Le, D.O. located?
The NPPES record lists a practice address at 17360 Brookhurst Street, Fountain Valley, CA, 92708. Phone: (714) 797-1797. Providers update this record themselves, so call before visiting.
How can I verify Billy Le, D.O.'s license?
NPPES lists California license number 20A11949, 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 Billy Le, D.O. prescribe under Medicare Part D?
In 2024, Billy Le, D.O. had 209 Medicare Part D claims for 96 beneficiaries; the average among hospitalist physician prescribers was 521. 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.