Lilian B. Tran, MD
Internal Medicine Physician · Rancho Santa Margarita, CA
Lilian B. Tran, MD is an internal medicine physician with a practice address in Rancho Santa Margarita, California, and NPI 1134190234, issued on Jan 28, 2006. Check the license (California A69137, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Lilian B. Tran
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A69137 CA
Self-reported in NPPES; status is on the state search - Practice location
- 29472 Avenida DE Las Bandera, Rancho Santa Margarita, CA 92688
- Phone
- (949) 459-9968
- Enumerated
- Jan 28, 2006
- Record last updated
- Jan 22, 2019 (not updated in 7 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20080723000833); accepts Medicare assignment
- Medical or professional school
- Saint Louis University School Of Medicine, 1997
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 29472 Avenida DE Las Bandera
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ryan Ah San, PA-CMedical Physician Assistant1013181346
- Mark Cianciola, MDFamily Medicine Physician1750371035
- Daizy Engineer, MDPediatrics Physician1467442897
- Monique Johnson, PHARM.D.Pharmacist1568641637
- Kenneth Kazenelson, M.D.Family Medicine Physician1275539637
- Sumant Nagarkar, MDFamily Medicine Physician1316938871
Verify Lilian B. Tran in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A69137Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
6% fewer Medicare Part D claims than the average internal medicine physician in 2024
3,001 Medicare Part D claims for 247 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 20 claims were for opioids.
Most prescribed
- Atorvastatin Calcium251 claims
- Metformin Hcl115 claims
- Levothyroxine Sodium107 claims
- Amlodipine Besylate104 claims
- Lisinopril94 claims
- Simvastatin93 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 FoundationRancho Santa Margarita, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Lilian B. Tran among 17,696 internal medicine physician records in California
Lilian B. Tran, 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 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
- Graduated1997 · median 2004 among the 11,065 with a school on file
- Record last updated2019 · 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).
7 internal medicine physician records list a practice address in Rancho Santa Margarita
They are 7 of the 479 NPPES records with a practice address in Rancho Santa Margarita, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Rancho Santa Margarita → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Yolanda Gomez, MDRancho Santa Margarita, CA 926881306842877
- Gwendolyn Gore, MDRancho Santa Margarita, CA 926881811900129
- Sridhar Kundula, M.D.Rancho Santa Margarita, CA 926881518301449
- Iwan Nyotowidjojo, M.D.Rancho Santa Margarita, CA 926881578976270
- Deepak Patel, MDRancho Santa Margarita, CA 926881437123965
- Siamak Zamani, M.D.Rancho Santa Margarita, CA 926881730245358
- Bahman Badie, M.D.Mission Viejo, CA 926911396721916
- Sherif El Sokkary, M.D.Mission Viejo, CA 926911710964432
Common questions
What is Lilian B. Tran, MD's NPI number?
Lilian B. Tran, MD's National Provider Identifier (NPI) is 1134190234, issued on Jan 28, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Lilian B. Tran, MD located?
The NPPES record lists a practice address at 29472 Avenida DE Las Bandera, Rancho Santa Margarita, CA, 92688. Phone: (949) 459-9968. Providers update this record themselves, so call before visiting.
How can I verify Lilian B. Tran, MD's license?
NPPES lists California license number A69137, 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 Lilian B. Tran, MD prescribe under Medicare Part D?
In 2024, Lilian B. Tran, MD had 3,001 Medicare Part D claims for 247 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.