William Ruiz, MD
Family Medicine Physician · Hawthorne, CA
William Ruiz, MD is a family medicine physician with a practice address in Hawthorne, California, and NPI 1811912504, issued on Jul 13, 2006. Check the license (California G47785, 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 Ruiz
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- G47785 CA
Self-reported in NPPES; status is on the state search - Practice location
- 5400 W Rosecrans Ave, Hawthorne, CA 90250
- Phone
- (310) 727-1722
- Enumerated
- Jul 13, 2006
- Entity
- Type 1 · individual
Also registered at 5400 W Rosecrans Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify William Ruiz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G47785Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
20 family medicine physician records list a Hawthorne practice address
They are 20 of the 818 NPPES records with a Hawthorne practice address, and 17,133 family medicine physician records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 20 in Hawthorne → All 17,133 in California → Every provider in Hawthorne →
Other family medicine physician records in California
- Omer Aba-Omer, MDSanta Monica, CA1649702093
- Michelle Ababa, MDWilmington, CA1710922513
- Anna Tzeitel Abalos, MDRoseville, CA1720200017
- Adan Abarca, MDAnaheim, CA1760553689
- Vanessa Abarca, DOVentura, CA1952040859
- Lorraine Abate, M.D.Sacramento, CA1104840008
- Robert Abatecola, MDCastro Valley, CA1669551719
- Romeo Abaya, M.D.Cottonwood, CA1598053506
- Effiem Abbah, MD, MPHSan Francisco, CA1821185133
- Khuzeman Abbasi, MDSanta Rosa, CA1841979952
Common questions
What is William Ruiz, MD's NPI number?
William Ruiz, MD's National Provider Identifier (NPI) is 1811912504, issued on Jul 13, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William Ruiz, MD located?
The NPPES record lists a practice address at 5400 W Rosecrans Ave, Hawthorne, CA, 90250. Phone: (310) 727-1722. Providers update this record themselves, so call before visiting.
How can I verify William Ruiz, MD's license?
NPPES lists California license number G47785, 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), loaded Aug 27, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.