Tsang Lau, M.D.
Internal Medicine Physician · Orange, CA
Tsang Lau, M.D. is an internal medicine physician with a practice address in Orange, California, and NPI 1700100732, issued on Mar 19, 2010. Check the license (California A149776, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Tsang Lau
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- A149776 CA
267410 NY
Self-reported in NPPES; status is on the state search - Practice location
- 625 The City Dr S, Orange, CA 92868
- Phone
- (714) 202-2330
- Enumerated
- Mar 19, 2010
- Record last updated
- Sep 26, 2024
- Medicare enrollment
- Enrolled (PECOS I20170828003936); accepts Medicare assignment
- Medical or professional school
- Albany Medical College Of Union University, 2010
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 625 The City Dr S
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Alexis GasparBehavior Technician1174172878
- Owais KhanBehavior Technician1376307645
- Rachel ZambranoBehavior Analyst1467945121
Verify Tsang Lau in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A149776Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
86% fewer Medicare Part D claims than the average internal medicine physician in 2024
460 Medicare Part D claims for 178 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 18 claims were for opioids.
Most prescribed
- Furosemide31 claims
- Atorvastatin Calcium23 claims
- Eliquis23 claims
- Levofloxacin21 claims
- Prednisone21 claims
- Metoprolol Succinate18 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
- Galen Inpatient Physicians PCWest Covina, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Tsang Lau among 17,696 internal medicine physician records in California
Tsang Lau, M.D. 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 2010, is newer than 63% of them.
- NPI issued2010 · 63% of these records are older, 34% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2010 · median 2004 among the 11,065 with a school on file
- Record last updated2024 · 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).
187 internal medicine physician records list a practice address in Orange
They are 187 of the 13,245 NPPES records with a practice address in Orange, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in Orange → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Jane Abdelhadi, M.D.Orange, CA 928681124097100
- Edwin Alexander, M.D.Orange, CA 928681659315752
- Romilla Batra, MDOrange, CA 928681871545038
- Ronald Daoud, M.D.Orange, CA 928681093732992
- Nadia Elihu, M.D.Orange, CA 928681659340156
- Roy Herndon, M.D.Orange, CA 928681417928383
- Deepti Pandita, MDOrange, CA 928681255358727
- Maryam Rahimi, MDOrange, CA 928681043268949
Common questions
What is Tsang Lau, M.D.'s NPI number?
Tsang Lau, M.D.'s National Provider Identifier (NPI) is 1700100732, issued on Mar 19, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Tsang Lau, M.D. located?
The NPPES record lists a practice address at 625 The City Dr S, Orange, CA, 92868. Phone: (714) 202-2330. Providers update this record themselves, so call before visiting.
How can I verify Tsang Lau, M.D.'s license?
NPPES lists California license number A149776, 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 Tsang Lau, M.D. prescribe under Medicare Part D?
In 2024, Tsang Lau, M.D. had 460 Medicare Part D claims for 178 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.