Mark Leclerc, M.D.
Pediatrics Physician · Lafayette, CA
Mark Leclerc, M.D. is a pediatrics physician with a practice address in Lafayette, California, and NPI 1215293147, issued on Apr 4, 2012. Check the license (California C34644, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Mark Leclerc
- Credential
- M.D.
- Primary taxonomy
- Pediatrics Physician 208000000X
- License number
- C34644 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3 Rimrock RD, Lafayette, CA 94549
- Phone
- (925) 283-8328
- Enumerated
- Apr 4, 2012
- Record last updated
- Apr 4, 2012 (not updated in 14 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest pediatrics physician records → All 9,272 in California → Look up another NPI →
Verify Mark Leclerc in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license C34644Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
95% fewer Medicare Part D claims than the average pediatrics physician in 2024
19 Medicare Part D claims, against an average of 375 among the 5,609 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.
Mark Leclerc among 9,272 pediatrics physician records in California
Mark Leclerc, M.D. is one of 9,272 pediatrics physician records with a practice address in California. 31% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2012, is newer than 69% of them.
- NPI issued2012 · 69% of these records are older, 27% newer
- In a Medicare fileYes · 31% of these records are
- In the CMS Doctors and Clinicians fileNo · 8% of these records are
- Record last updated2012 · 65% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208000000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
8 pediatrics physician records list a practice address in Lafayette
They are 8 of the 736 NPPES records with a practice address in Lafayette, and 9,272 pediatrics physician records in California.
All 9,272 in California → Every provider in Lafayette → Pediatrics Physician nationwide →
The 8 pediatrics physician records with the nearest ZIP codes
- Jennifer Anderson, MDLafayette, CA 945491740291848
- Deirdre FarlowLafayette, CA 945491053710095
- Patricia Francis, M.D.Lafayette, CA 945491609882638
- Michael Malone, M.D.Lafayette, CA 945491194731117
- Charles Reed, M.D.Lafayette, CA 945491427181965
- Daniel Robbins, MDLafayette, CA 945491689680613
- Maria Steelman, MDLafayette, CA 945491457436701
- Vicente Chiong, MDLivermore, CA 945501558310599
Common questions
What is Mark Leclerc, M.D.'s NPI number?
Mark Leclerc, M.D.'s National Provider Identifier (NPI) is 1215293147, issued on Apr 4, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Mark Leclerc, M.D. located?
The NPPES record lists a practice address at 3 Rimrock RD, Lafayette, CA, 94549. Phone: (925) 283-8328. Providers update this record themselves, so call before visiting.
How can I verify Mark Leclerc, M.D.'s license?
NPPES lists California license number C34644, 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 Mark Leclerc, M.D. prescribe under Medicare Part D?
In 2024, Mark Leclerc, M.D. had 19 Medicare Part D claims; the average among pediatrics physician prescribers was 375. 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.