David L. Ringo, MD
Psychiatry Physician · Hayward, CA
David L. Ringo, MD is a psychiatry physician with a practice address in Hayward, California, and NPI 1245318013, issued on Nov 1, 2006. Check the license (California G66598, as entered in NPPES) on the Medical Board of California; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- David L. Ringo
- Credential
- MD
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- G66598 CA
Self-reported in NPPES; status is on the state search - Practice location
- 27400 Hesperian Blvd, Hayward, CA 94545
- Phone
- (510) 784-4000
- Enumerated
- Nov 1, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Medicaid ID
- 00G665980 CA
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 8,673 in California → Look up another NPI →
Also registered at 27400 Hesperian Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Lyn Aborn, MDEmergency Medicine Physician1891873659
- Ahmed Alkoraishi, MDColon & Rectal Surgery Physician1609954478
- David Anderson, MDInternal Medicine Physician1659459410
- Eric Anderson, MDEmergency Medicine Physician1417035262
- Joel Angel, M.D.Hospitalist Physician1669644571
- Marc Anker, MDObstetrics & Gynecology Physician1376621128
Verify David L. Ringo in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G66598Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
David L. Ringo among 8,673 psychiatry physician records in California
David L. Ringo, MD is one of 8,673 psychiatry physician records with a practice address in California. 67% 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, 67% newer
- In a Medicare fileNo · 67% of these records are
- In the CMS Doctors and Clinicians fileNo · 38% of these records are
- Record last updated2007 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0800X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Psychiatry Physician providers in California
There are 8,673 psychiatry physician records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 8,673 in California → Every provider in Hayward → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- A. Gerson Schreiber, MDHayward, CA 945451871645671
- Garrett Daum, M.D.Castro Valley, CA 945461053597138
- Ana EwartHayward, CA 945441932745049
- Karen Gudiksen, M.D.Castro Valley, CA 945461053486787
- Roger Lauer, M.D.Hayward, CA 945441972624534
- Arkady Oreper, MDCastro Valley, CA 945461346320710
- Thomas Powers, M.D.Castro Valley, CA 945461780778407
- Danilo Lucila, M.D.Hayward, CA 945411780959775
Common questions
What is David L. Ringo, MD's NPI number?
David L. Ringo, MD's National Provider Identifier (NPI) is 1245318013, issued on Nov 1, 2006. An NPI identifies a provider in billing; it is not a license.
Where is David L. Ringo, MD located?
The NPPES record lists a practice address at 27400 Hesperian Blvd, Hayward, CA, 94545. Phone: (510) 784-4000. Providers update this record themselves, so call before visiting.
How can I verify David L. Ringo, MD's license?
NPPES lists California license number G66598, 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.