William G. Roth, PHD
Psychologist · Loma Linda, CA
William G. Roth, PHD is a psychologist with a practice address in Loma Linda, California, and NPI 1154346849, issued on Jul 13, 2006. Check the license (California PSY10195, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- William G. Roth
- Credential
- PHD
- Primary taxonomy
- Psychologist 103T00000X
- License number
- PSY10195 CA
Self-reported in NPPES; status is on the state search - Practice location
- 11374 Mountain View Ave, Loma Linda, CA 92354
- Phone
- (909) 558-4505
- Enumerated
- Jul 13, 2006
- Record last updated
- Sep 24, 2007 (not updated in 19 years: call before relying on the address or phone)
- Medicaid ID
- PSY101950 CA
- Medicare enrollment
- Enrolled (PECOS I20080729000642); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest psychologist records → All 7,304 in California → Look up another NPI →
Also registered at 11374 Mountain View Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Mazna Ahmad, MDInternal Medicine Physician1043475536
- Karen Brandon, P.T.Physical Therapist1053340653
- Nishena CaseyCommunity Health Worker1326813346
- George Christison, M.D.Psychiatry Physician1174548135
- Irene Ciovica, M.D.Child & Adolescent Psychiatry Physician1740479724
- Carlos Fayard, PHDPsychologist1669404737
Verify William G. Roth in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license PSY10195Check 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): 85.2 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
- Faculty Physicians And Surgeons OF LlusmRedlands, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William G. Roth among 7,304 psychologist records in California
William G. Roth, PHD is one of 7,304 psychologist records with a practice address in California. 6% 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 1% of them.
- NPI issued2006 · 1% of these records are older, 82% newer
- In a Medicare fileYes · 6% of these records are
- In the CMS Doctors and Clinicians fileYes · 14% of these records are
- Graduated1986 · median 2005 among the 1,058 with a school on file
- Record last updated2007 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 103T00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Psychologist providers in California
There are 7,304 psychologist records in California.
All 7,304 in California → Every provider in Loma Linda → Psychologist nationwide →
The 8 psychologist records with the nearest ZIP codes
- Kendal Boyd, PHDLoma Linda, CA 923541235240490
- Carlos Fayard, PHDLoma Linda, CA 923541669404737
- Kimberly Freeman, PHDLoma Linda, CA 923541932347481
- Mary-Catherin Freier, PHDLoma Linda, CA 923541902911647
- Stephanie GregoriusLoma Linda, CA 923541982534129
- Sophia JosemoanLoma Linda, CA 923541649152513
- Henry Lamberton, PHDLoma Linda, CA 923541215037122
- Dorie-Mae NicolasLoma Linda, CA 923541154108017
Common questions
What is William G. Roth, PHD's NPI number?
William G. Roth, PHD's National Provider Identifier (NPI) is 1154346849, issued on Jul 13, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William G. Roth, PHD located?
The NPPES record lists a practice address at 11374 Mountain View Ave, Loma Linda, CA, 92354. Phone: (909) 558-4505. Providers update this record themselves, so call before visiting.
How can I verify William G. Roth, PHD's license?
NPPES lists California license number PSY10195, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
What is William G. Roth, PHD's MIPS final score?
The 2023 MIPS final score is 85.2 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.