Yen Ingrid Lai, MD
Family Medicine Physician · Claremont, CA
Yen Ingrid Lai, MD is a family medicine physician with a practice address in Claremont, California, and NPI 1033110671, issued on Aug 4, 2005. Check the license (California A63942, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Yen Ingrid Lai
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- A63942 CA
Self-reported in NPPES; status is on the state search - Practice location
- 310 N Indian Hill Blvd # 240, Claremont, CA 91711
- Phone
- (909) 244-8902
- Enumerated
- Aug 4, 2005
- Record last updated
- Mar 7, 2023
- Fax
- (714) 482-4000
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Verify Yen Ingrid Lai in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A63942Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
80% fewer Medicare Part D claims than the average family medicine physician in 2024
709 Medicare Part D claims for 55 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 17% of claims.
Most prescribed
- Metformin Hcl55 claims
- Synthroid54 claims
- Ezetimibe40 claims
- Rosuvastatin Calcium35 claims
- Levothyroxine Sodium33 claims
- Liothyronine Sodium32 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.
Yen Ingrid Lai among 17,133 family medicine physician records in California
Yen Ingrid Lai, MD is one of 17,133 family medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 94% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileNo · 62% of these records are
- Record last updated2023 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
34 family medicine physician records list a practice address in Claremont
They are 34 of the 800 NPPES records with a practice address in Claremont, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Claremont → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Alan Bergen, M.D.Claremont, CA 917111700022118
- Javier Chang, M.D.Claremont, CA 917111558565366
- Jennie Ho, M.D.Claremont, CA 917111013082403
- Lester Holstein, MDClaremont, CA 917111720088792
- Robyn Jacoby, DOClaremont, CA 917111487623575
- Mary Kasem, MDClaremont, CA 917111982639993
- Paul Orr, M.D.Claremont, CA 917111417950221
- Jin Park, D.O.Claremont, CA 917111992800353
Common questions
What is Yen Ingrid Lai, MD's NPI number?
Yen Ingrid Lai, MD's National Provider Identifier (NPI) is 1033110671, issued on Aug 4, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Yen Ingrid Lai, MD located?
The NPPES record lists a practice address at 310 N Indian Hill Blvd # 240, Claremont, CA, 91711. Phone: (909) 244-8902. Providers update this record themselves, so call before visiting.
How can I verify Yen Ingrid Lai, MD's license?
NPPES lists California license number A63942, 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 Yen Ingrid Lai, MD prescribe under Medicare Part D?
In 2024, Yen Ingrid Lai, MD had 709 Medicare Part D claims for 55 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.