William L. Ring, M.D.
Hospitalist Physician · La Jolla, CA
William L. Ring, M.D. is a hospitalist physician with a practice address in La Jolla, California, and NPI 1407811003, issued on Apr 18, 2006. Check the license (California G69579, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- William L. Ring
- Credential
- M.D.
- Primary taxonomy
- Hospitalist Physician 208M00000X
- License number
- G69579 CA
Self-reported in NPPES; status is on the state search - Practice location
- 10666 N Torrey Pines RD, La Jolla, CA 92037
- Phone
- (858) 455-9100
- Enumerated
- Apr 18, 2006
- Record last updated
- Aug 1, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (858) 784-5933
- Medicaid ID
- 00G695790 CA
- Medicare enrollment
- Enrolled (PECOS I20080804000454); accepts Medicare assignment
- Medical or professional school
- University Of Tennessee, Hsc, College Of Medicine, 1986
- Entity
- Type 1 · individual
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Also registered at 10666 N Torrey Pines RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify William L. Ring in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G69579Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Scripps HealthLa Jolla, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William L. Ring among 3,099 hospitalist physician records in California
William L. Ring, M.D. is one of 3,099 hospitalist physician records with a practice address in California. 90% 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 2% of them.
- NPI issued2006 · 2% of these records are older, 73% newer
- In a Medicare fileYes · 90% of these records are
- In the CMS Doctors and Clinicians fileYes · 81% of these records are
- Graduated1986 · median 2010 among the 2,505 with a school on file
- Record last updated2007 · 49% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208M00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
66 hospitalist physician records list a practice address in La Jolla
They are 66 of the 3,648 NPPES records with a practice address in La Jolla, and 3,099 hospitalist physician records in California.
All 3,099 in California → Every provider in La Jolla → Hospitalist Physician nationwide →
The 8 hospitalist physician records with the nearest ZIP codes
- Duc Do, M.D.La Jolla, CA 920371811006851
- Jason Douglas, MDLa Jolla, CA 920371639152044
- Dan Dworsky, M.D.La Jolla, CA 920371114993631
- Liesbet Joris-Quinton, M.D.La Jolla, CA 920371770542987
- Neil Kalra, M.D.La Jolla, CA 920371699925784
- Mark Kyle, M.D.La Jolla, CA 920371154301646
- Diane McNally, MDLa Jolla, CA 920371982861357
- Laura Nicholson, M.D.La Jolla, CA 920371023060845
Common questions
What is William L. Ring, M.D.'s NPI number?
William L. Ring, M.D.'s National Provider Identifier (NPI) is 1407811003, issued on Apr 18, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William L. Ring, M.D. located?
The NPPES record lists a practice address at 10666 N Torrey Pines RD, La Jolla, CA, 92037. Phone: (858) 455-9100. Providers update this record themselves, so call before visiting.
How can I verify William L. Ring, M.D.'s license?
NPPES lists California license number G69579, 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. 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.