NPPES file of Aug 9, 2026

Robert Lloyd Weston, MD

Family Medicine Physician · La Jolla, CA

Robert Lloyd Weston, MD is a family medicine physician with a practice address in La Jolla, California, and NPI 1639131832, issued on Apr 4, 2006. Check the license (California G29965, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1639131832
Name
Robert Lloyd Weston
Credential
MD
Primary taxonomy
Family Medicine Physician 207Q00000X
License number
G29965 CA
Self-reported in NPPES; status is on the state search
Practice location
210 Coast Blvd, La Jolla, CA 92037
Phone
(858) 454-6141
Enumerated
Apr 4, 2006
Record last updated
Jul 13, 2026
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 210 Coast Blvd

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Gregory Mattson, M. D.Family Medicine Physician1922155282

Verify Robert Lloyd Weston in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license G29965
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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98% fewer Medicare Part D claims than the average family medicine physician in 2024

61 Medicare Part D claims, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.

  1. Robert Weston61
  2. Specialty average3,544

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.

Robert Lloyd Weston among 17,133 family medicine physician records in California

Robert Lloyd Weston, 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 2006, is newer than 6% of them.

  • NPI issued2006 · 6% of these records are older, 59% newer
  • In a Medicare fileYes · 81% of these records are
  • In the CMS Doctors and Clinicians fileNo · 62% of these records are
  • Record last updated2026 · 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).

Family Medicine Physician providers in California

There are 17,133 family medicine physician records in California.

The 8 family medicine physician records with the nearest ZIP codes

  1. Nasrin ArbabiLa Jolla, CA 920371881655462
  2. Harriet Bielawski, M.D.La Jolla, CA 920371962474049
  3. Gerard Blake, MDLa Jolla, CA 920371962481929
  4. Elena Dembo-Smeaton, M.D.La Jolla, CA 920371184795296
  5. L Dinenberg, M.D.La Jolla, CA 920371952479164
  6. Gilbert Dominguez, M.D.La Jolla, CA 920371275601478
  7. Teresa Dudarewicz, M.D.La Jolla, CA 920371679634406
  8. Mona Ezzat, M.D.La Jolla, CA 920371902844939

Common questions

What is Robert Lloyd Weston, MD's NPI number?

Robert Lloyd Weston, MD's National Provider Identifier (NPI) is 1639131832, issued on Apr 4, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Robert Lloyd Weston, MD located?

The NPPES record lists a practice address at 210 Coast Blvd, La Jolla, CA, 92037. Phone: (858) 454-6141. Providers update this record themselves, so call before visiting.

How can I verify Robert Lloyd Weston, MD's license?

NPPES lists California license number G29965, 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 Robert Lloyd Weston, MD prescribe under Medicare Part D?

In 2024, Robert Lloyd Weston, MD had 61 Medicare Part D claims; 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.