Lorien Rachel Wallace, DO
Hospitalist Physician · Fontana, CA
Lorien Rachel Wallace, DO is a hospitalist physician with a practice address in Fontana, California, and NPI 1518220722, issued on Jun 21, 2012. Check the license (California 20A13168, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Lorien Rachel Wallace
- Credential
- DO
- Primary taxonomy
- Hospitalist Physician 208M00000X
- License number
- 20A13168 CA
Self-reported in NPPES; status is on the state search - Practice location
- 9961 Sierra Ave, Fontana, CA 92335
- Phone
- (909) 427-5000
- Enumerated
- Jun 21, 2012
- Record last updated
- Dec 3, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20150918002250); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest hospitalist physician records → All 3,099 in California → Look up another NPI →
Also registered at 9961 Sierra Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Lorien Rachel Wallace in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A13168Check 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
- Southern California Permanente Medical GroupOntario, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Lorien Rachel Wallace among 3,099 hospitalist physician records in California
Lorien Rachel Wallace, DO 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 2012, is newer than 51% of them.
- NPI issued2012 · 51% of these records are older, 44% newer
- In a Medicare fileYes · 90% of these records are
- In the CMS Doctors and Clinicians fileYes · 81% of these records are
- Graduated2012 · median 2010 among the 2,505 with a school on file
- Record last updated2021 · 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).
Hospitalist Physician providers in California
There are 3,099 hospitalist physician records in California.
All 3,099 in California → Every provider in Fontana → Hospitalist Physician nationwide →
The 8 hospitalist physician records with the nearest ZIP codes
- Andrew Cha, D.OFontana, CA 923351508832940
- Seonah Cho, MDFontana, CA 923351841495892
- Tania Choudhary, MDFontana, CA 923351508354176
- James Dinh, M.D.Fontana, CA 923351104915081
- Thoyaja Koritala, M.D.Fontana, CA 923351528354024
- Deena Patel, D.O.Fontana, CA 923351437594959
- Julia Shih, DOFontana, CA 923351871121517
- Fouzia Usman, M.D.Fontana, CA 923351265966873
Common questions
What is Lorien Rachel Wallace, DO's NPI number?
Lorien Rachel Wallace, DO's National Provider Identifier (NPI) is 1518220722, issued on Jun 21, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Lorien Rachel Wallace, DO located?
The NPPES record lists a practice address at 9961 Sierra Ave, Fontana, CA, 92335. Phone: (909) 427-5000. Providers update this record themselves, so call before visiting.
How can I verify Lorien Rachel Wallace, DO's license?
NPPES lists California license number 20A13168, 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.