William V. Ronan, M.D.
Pediatric Anesthesiology Physician · San Diego, CA
William V. Ronan, M.D. is a pediatric anesthesiology physician with a practice address in San Diego, California, and NPI 1245264548, issued on Jul 10, 2006. Check the license (California 20A4743, as entered in NPPES) on the Medical Board of California; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- William V. Ronan
- Credential
- M.D.
- Primary taxonomy
- Pediatric Anesthesiology Physician 207LP3000X
- License number
- 20A4743 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3626 Ruffin RD, San Diego, CA 92123
- Phone
- (858) 565-9666
- Enumerated
- Jul 10, 2006
- Record last updated
- Oct 5, 2009 (not updated in 17 years: call before relying on the address or phone)
- Fax
- (858) 565-9441
- Medicaid ID
- 00AX47430 CA
- Entity
- Type 1 · individual
8 nearest pediatric anesthesiology physician records → All 240 in California → Look up another NPI →
Also registered at 3626 Ruffin RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Rolando Abada, M.D.Anesthesiology Physician1952319071
- Yvonne Ahn, MDAnesthesiology Physician1447407275
- Anthony Alarcon, M.D.Anesthesiology Physician1972745370
- Arti Amin, M.D.Anesthesiology Physician1124349774
- John Arnold, M.D.Anesthesiology Physician1306853585
- Gus Atkins, M.D.Anesthesiology Physician1821075987
Verify William V. Ronan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A4743Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
William V. Ronan among 240 pediatric anesthesiology physician records in California
William V. Ronan, M.D. is one of 240 pediatric anesthesiology physician records with a practice address in California. 63% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2006, is newer than 2% of them.
- NPI issued2006 · 2% of these records are older, 73% newer
- In a Medicare fileNo · 63% of these records are
- In the CMS Doctors and Clinicians fileNo · 57% of these records are
- Record last updated2009 · 36% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207LP3000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Pediatric Anesthesiology Physician providers in California
There are 240 pediatric anesthesiology physician records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 240 in California → Every provider in San Diego → Pediatric Anesthesiology Physician nationwide →
The 8 pediatric anesthesiology physician records with the nearest ZIP codes
- Krista Bockstahler, MDSan Diego, CA 921231689633257
- Edgar Canada, M.D.San Diego, CA 921231801826003
- Alvin Faierman, M.D.San Diego, CA 921231679509350
- Brock Fisher, M.D.San Diego, CA 921231144256470
- Josh Gordon, M.D.San Diego, CA 921231770513798
- Gloria Hwang, M.D.San Diego, CA 921231801820261
- Kathleen Kaya, M.D.San Diego, CA 921231699705624
- Christine Nieman, MDSan Diego, CA 921231932140274
Common questions
What is William V. Ronan, M.D.'s NPI number?
William V. Ronan, M.D.'s National Provider Identifier (NPI) is 1245264548, issued on Jul 10, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William V. Ronan, M.D. located?
The NPPES record lists a practice address at 3626 Ruffin RD, San Diego, CA, 92123. Phone: (858) 565-9666. Providers update this record themselves, so call before visiting.
How can I verify William V. Ronan, M.D.'s license?
NPPES lists California license number 20A4743, 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.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. 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.