Isabella Lai, M.D.
Internal Medicine Physician · Los Angeles, CA
Isabella Lai, M.D. is an internal medicine physician with a practice address in Los Angeles, California, and NPI 1750763439, issued on Jun 18, 2015. Check the license (California A149405, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Isabella Lai
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A149405 CA
Self-reported in NPPES; status is on the state search - Practice location
- 10780 Santa Monica Blvd Ste 350, Los Angeles, CA 90025
- Phone
- (424) 274-1550
- Enumerated
- Jun 18, 2015
- Record last updated
- Mar 26, 2025
- Fax
- (920) 352-4156
- Medicare enrollment
- Enrolled (PECOS I20180604000592); accepts Medicare assignment
- Medical or professional school
- Stanford University School Of Medicine, 2015
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 10780 Santa Monica Blvd Ste 350
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Joyce Kim, L.ACAcupuncturist1174489538
Verify Isabella Lai in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A149405Check 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
17 Medicare Part D claims for 13 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
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.
No measured MIPS final score for 2023
CMS assigned the neutral MIPS final score of 75 without scoring Quality, Cost, Promoting Interoperability or Improvement Activities. It is an administrative threshold, so PlainDoctor does not compare it with measured clinicians.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Isabella Lai among 17,696 internal medicine physician records in California
Isabella Lai, 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 2015, is newer than 76% of them.
- NPI issued2015 · 76% of these records are older, 21% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2015 · median 2004 among the 11,065 with a school on file
- Record last updated2025 · 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 →
The 8 internal medicine physician records with the nearest ZIP codes
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Common questions
What is Isabella Lai, M.D.'s NPI number?
Isabella Lai, M.D.'s National Provider Identifier (NPI) is 1750763439, issued on Jun 18, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Isabella Lai, M.D. located?
The NPPES record lists a practice address at 10780 Santa Monica Blvd Ste 350, Los Angeles, CA, 90025. Phone: (424) 274-1550. Providers update this record themselves, so call before visiting.
How can I verify Isabella Lai, M.D.'s license?
NPPES lists California license number A149405, 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 Isabella Lai, M.D. prescribe under Medicare Part D?
In 2024, Isabella Lai, M.D. had 17 Medicare Part D claims for 13 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Isabella Lai, M.D.'s MIPS final score?
CMS assigned the neutral MIPS final score of 75 for 2023 without scoring any category, so it is not a measured result.
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.