William David Leonard, M.D.
Anesthesiology Physician · San Diego, CA
William David Leonard, M.D. is an anesthesiology physician with a practice address in San Diego, California, and NPI 1265514475, issued on Oct 19, 2006. Check the license (California A98392, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- William David Leonard
- Credential
- M.D.
- Primary taxonomy
- Anesthesiology Physician 207L00000X
- License numbers
- A98392 CA
MD-9850 HI
Self-reported in NPPES; status is on the state search - Practice location
- 3444 Kearny Villa RD Ste 100, San Diego, CA 92123
- Phone
- (858) 268-3566
- Enumerated
- Oct 19, 2006
- Record last updated
- Jun 12, 2017 (not updated in 9 years: call before relying on the address or phone)
- Fax
- (858) 268-0430
- Medicaid ID
- 1265514475 CA
- Medicare enrollment
- Enrolled (PECOS I20070720000835); accepts Medicare assignment
- Medical or professional school
- Uniformed Services Uhs Fe Hebert School Of Med, 1995
- Entity
- Type 1 · individual
8 nearest anesthesiology physician records → All 7,571 in California → Look up another NPI →
Also registered at 3444 Kearny Villa RD Ste 100
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Mark Raybeck, M.D.Anesthesiology Physician1730174806
Verify William David Leonard in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A98392Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The practice group's MIPS final score for 2023 (Medicare payment program): 88.2 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Progressive Anesthesia Consultants OF CaliforniaLakeport, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William David Leonard among 7,571 anesthesiology physician records in California
William David Leonard, M.D. is one of 7,571 anesthesiology physician records with a practice address in California. 71% 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 5% of them.
- NPI issued2006 · 5% of these records are older, 53% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated1995 · median 2006 among the 4,868 with a school on file
- Record last updated2017 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207L00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
686 anesthesiology physician records list a practice address in San Diego
They are 686 of the 52,937 NPPES records with a practice address in San Diego, and 7,571 anesthesiology physician records in California.
All 7,571 in California → Every provider in San Diego → Anesthesiology Physician nationwide →
The 8 anesthesiology physician records with the nearest ZIP codes
- Gus Atkins, M.D.San Diego, CA 921231821075987
- Paul Cattafi, DOSan Diego, CA 921231538151543
- Fei Chen, M.D.San Diego, CA 921231144290701
- Eric Clark, M.D.San Diego, CA 921231720078470
- William Connell, M.D.San Diego, CA 921231609848027
- Hisham El-Tayeb, M.D.San Diego, CA 921231679544084
- Janice Fernandez, M.D.San Diego, CA 921231578549788
- Robert Howard, M.D.San Diego, CA 921231003889528
Common questions
What is William David Leonard, M.D.'s NPI number?
William David Leonard, M.D.'s National Provider Identifier (NPI) is 1265514475, issued on Oct 19, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William David Leonard, M.D. located?
The NPPES record lists a practice address at 3444 Kearny Villa RD Ste 100, San Diego, CA, 92123. Phone: (858) 268-3566. Providers update this record themselves, so call before visiting.
How can I verify William David Leonard, M.D.'s license?
NPPES lists California license number A98392, 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.
What is William David Leonard, M.D.'s MIPS final score?
The 2023 MIPS final score is 88.2 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.