Sewon Oum, M.D.
Hospitalist Physician · Woodland Hills, CA
Sewon Oum, M.D. is a hospitalist physician with a practice address in Woodland Hills, California, and NPI 1063772085, issued on May 23, 2012. Check the license (California A130847, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Sewon Oum
- Credential
- M.D.
- Primary taxonomy
- Hospitalist Physician 208M00000X
- License number
- A130847 CA
Self-reported in NPPES; status is on the state search - Practice location
- 5601 DE Soto Ave, Woodland Hills, CA 91367
- Phone
- (818) 719-2000
- Enumerated
- May 23, 2012
- Record last updated
- Jan 19, 2016 (not updated in 10 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20160311000565); accepts Medicare assignment
- Medical or professional school
- Ohio State University College Of Medicine, 2015
- Entity
- Type 1 · individual
8 nearest hospitalist physician records → All 3,099 in California → Look up another NPI →
Also registered at 5601 DE Soto Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Houry Abajian, PHARM.D.Pharmacist1235297383
- Cecille Abeleda, RCP, RRTRegistered Respiratory Therapist1316424872
- Sunitha AbrahamCertified Respiratory Therapist1114409679
- Arineh AbramPharmacist1760108401
- Stephano Abusleme, DOStudent in an Organized Health Care Education/Training Program1538747639
- Ani Adamian, PHARM DPharmacist1043841851
Verify Sewon Oum in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A130847Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
35% fewer Medicare Part D claims than the average hospitalist physician in 2024
338 Medicare Part D claims for 125 beneficiaries, against an average of 521 among the 21,613 providers of this specialty who prescribed in Part D. 27 claims were for opioids.
Most prescribed
- Cefdinir18 claims
- Metoprolol Succinate18 claims
- Eliquis17 claims
- Atorvastatin Calcium16 claims
- Carvedilol12 claims
- Prednisone12 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 86.1 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
- The Regents OF The University OF CaliforniaSanta Monica, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Sewon Oum among 3,099 hospitalist physician records in California
Sewon Oum, M.D. 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
- Graduated2015 · median 2010 among the 2,505 with a school on file
- Record last updated2016 · 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 Woodland Hills → Hospitalist Physician nationwide →
The 8 hospitalist physician records with the nearest ZIP codes
- Jun Ma, M.D.Woodland Hills, CA 913671861752321
- Michael Nguyen, DOWoodland Hills, CA 913671285376392
- Lorraine Pena, MDWoodland Hills, CA 913671366590341
- Ani Sargsyan, M.D.Woodland Hills, CA 913671902166473
- David Ton, MDWoodland Hills, CA 913671114287331
- Aamir Iqbal, M.D.Thousand Oaks, CA 913611174054019
- Anitha Srinivasa, M.D.Westlake Village, CA 913611306876149
- Gholamreza Badiee, M.D.Thousand Oaks, CA 913601841561784
Common questions
What is Sewon Oum, M.D.'s NPI number?
Sewon Oum, M.D.'s National Provider Identifier (NPI) is 1063772085, issued on May 23, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Sewon Oum, M.D. located?
The NPPES record lists a practice address at 5601 DE Soto Ave, Woodland Hills, CA, 91367. Phone: (818) 719-2000. Providers update this record themselves, so call before visiting.
How can I verify Sewon Oum, M.D.'s license?
NPPES lists California license number A130847, 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.
How much does Sewon Oum, M.D. prescribe under Medicare Part D?
In 2024, Sewon Oum, M.D. had 338 Medicare Part D claims for 125 beneficiaries; the average among hospitalist physician prescribers was 521. Part D covers Medicare prescriptions only.
What is Sewon Oum, M.D.'s MIPS final score?
The 2023 MIPS final score is 86.1 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.