Walter Alan Osias, M.D.
Diagnostic Radiology Physician · Los Angeles, CA
Walter Alan Osias, M.D. is a diagnostic radiology physician with a practice address in Los Angeles, California, and NPI 1841576097, issued on Nov 1, 2011. Check the license (California A124224, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Walter Alan Osias
- Credential
- M.D.
- Primary taxonomy
- Diagnostic Radiology Physician 2085R0202X
- License number
- A124224 CA
Self-reported in NPPES; status is on the state search - Practice location
- 11800 Wilshire Blvd, Los Angeles, CA 90025
- Phone
- (310) 582-7900
- Enumerated
- Nov 1, 2011
- Record last updated
- Jul 14, 2026
- Medicare enrollment
- Enrolled (PECOS I20140814002624); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest diagnostic radiology physician records → All 4,500 in California → Look up another NPI →
Also registered at 11800 Wilshire Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Walter Alan Osias in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A124224Check 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): 85.7 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).
Industry payments in 2024: $23.06
1 payment: food and beverage; the largest payer was Progenics Pharmaceuticals, Inc. The 8,048 providers of this specialty with any payment received $2,488.38 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Cedars-Sinai Medical Care FoundationLos Angeles, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Walter Alan Osias among 4,500 diagnostic radiology physician records in California
Walter Alan Osias, M.D. is one of 4,500 diagnostic radiology physician records with a practice address in California. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2011, is newer than 70% of them.
- NPI issued2011 · 70% of these records are older, 27% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated2011 · median 2004 among the 3,130 with a school on file
- Record last updated2026 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0202X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Diagnostic Radiology Physician providers in California
There are 4,500 diagnostic radiology physician records in California.
All 4,500 in California → Every provider in Los Angeles → Diagnostic Radiology Physician nationwide →
The 8 diagnostic radiology physician records with the nearest ZIP codes
- Suzanne Bash, MDLos Angeles, CA 900251417998253
- John Crues, M.DLos Angeles, CA 900251255333480
- Nastaran Fatemi, MDLos Angeles, CA 900251861430373
- Vincent Fennell, MDLos Angeles, CA 900251497798839
- Gary Gray, MDLos Angeles, CA 900251073555009
- Irwin Jasper, MDLos Angeles, CA 900251174564710
- Steven Kapelov, MDLos Angeles, CA 900251982642690
- Alma Loya, M.D.Los Angeles, CA 900251194781054
Common questions
What is Walter Alan Osias, M.D.'s NPI number?
Walter Alan Osias, M.D.'s National Provider Identifier (NPI) is 1841576097, issued on Nov 1, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Walter Alan Osias, M.D. located?
The NPPES record lists a practice address at 11800 Wilshire Blvd, Los Angeles, CA, 90025. Phone: (310) 582-7900. Providers update this record themselves, so call before visiting.
How can I verify Walter Alan Osias, M.D.'s license?
NPPES lists California license number A124224, 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.
What is Walter Alan Osias, M.D.'s MIPS final score?
The 2023 MIPS final score is 85.7 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.