Lawrence L. Choy, M.D.
Psychiatry Physician · Los Altos, CA
Lawrence L. Choy, M.D. is a psychiatry physician with a practice address in Los Altos, California, and NPI 1134316326, issued on Oct 1, 2007. Check the license on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Lawrence L. Choy
- Credential
- M.D.
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- Practice location
- 881 Fremont Ave Ste A5, Los Altos, CA 94024
- Phone
- (650) 209-5615
- Enumerated
- Oct 1, 2007
- Record last updated
- May 11, 2026
- Fax
- (650) 209-5955
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 8,673 in California → Look up another NPI →
Also registered at 881 Fremont Ave Ste A5
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Zaakir Yoonas, M.D.Psychiatry Physician1942497979
- Khaled Zaki, NPGeriatric Psychiatry Physician1457915969
Verify Lawrence L. Choy in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of CaliforniaCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
96% fewer Medicare Part D claims than the average psychiatry physician in 2024
42 Medicare Part D claims, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D.
Most prescribed
- Lorazepam11 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.
Lawrence L. Choy among 8,673 psychiatry physician records in California
Lawrence L. Choy, M.D. is one of 8,673 psychiatry physician records with a practice address in California. 67% 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 33% of them.
- NPI issued2007 · 33% of these records are older, 48% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileNo · 38% of these records are
- Record last updated2026 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0800X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
30 psychiatry physician records list a practice address in Los Altos
They are 30 of the 718 NPPES records with a practice address in Los Altos, and 8,673 psychiatry physician records in California.
All 8,673 in California → Every provider in Los Altos → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Frank Annis, MDLos Altos, CA 940241265536494
- Thomas Becker, MDLos Altos, CA 940241912095530
- Jeanette Bland, M.D.Los Altos, CA 940241851459192
- Ann Bogan, M.D.Los Altos, CA 940241629122296
- Ronald Cohen, M.D.Los Altos, CA 940241902064298
- Kimberly Holland, M.D.Los Altos, CA 940241447301858
- Farah Khan, M.D.Los Altos, CA 940241093778219
- Mohammed Mollah, MDLos Altos, CA 940241376624858
Common questions
What is Lawrence L. Choy, M.D.'s NPI number?
Lawrence L. Choy, M.D.'s National Provider Identifier (NPI) is 1134316326, issued on Oct 1, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Lawrence L. Choy, M.D. located?
The NPPES record lists a practice address at 881 Fremont Ave Ste A5, Los Altos, CA, 94024. Phone: (650) 209-5615. Providers update this record themselves, so call before visiting.
How can I verify Lawrence L. Choy, M.D.'s license?
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 Lawrence L. Choy, M.D. prescribe under Medicare Part D?
In 2024, Lawrence L. Choy, M.D. had 42 Medicare Part D claims; the average among psychiatry physician prescribers was 1,000. 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.