Tsz Ying Lee, MD
Internal Medicine Physician · Los Angeles, CA
Tsz Ying Lee, MD is an internal medicine physician with a practice address in Los Angeles, California, and NPI 1710180419, issued on Jun 8, 2007. Check the license (California A99205, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Tsz Ying Lee
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A99205 CA
Self-reported in NPPES; status is on the state search - Practice location
- 811 Wilshire Blvd, Los Angeles, CA 90017
- Phone
- (213) 415-1990
- Enumerated
- Jun 8, 2007
- Record last updated
- Dec 14, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (213) 415-1940
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 811 Wilshire Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Tsz Ying Lee in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A99205Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average internal medicine physician in 2024
20 Medicare Part D claims for 16 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Most prescribed
- Ondansetron Hcl16 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.
Tsz Ying Lee among 17,696 internal medicine physician records in California
Tsz Ying Lee, 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 2007, is newer than 44% of them.
- NPI issued2007 · 44% of these records are older, 44% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 63% of these records are
- Record last updated2015 · 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 →
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Common questions
What is Tsz Ying Lee, MD's NPI number?
Tsz Ying Lee, MD's National Provider Identifier (NPI) is 1710180419, issued on Jun 8, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Tsz Ying Lee, MD located?
The NPPES record lists a practice address at 811 Wilshire Blvd, Los Angeles, CA, 90017. Phone: (213) 415-1990. Providers update this record themselves, so call before visiting.
How can I verify Tsz Ying Lee, MD's license?
NPPES lists California license number A99205, 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 Tsz Ying Lee, MD prescribe under Medicare Part D?
In 2024, Tsz Ying Lee, MD had 20 Medicare Part D claims for 16 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.