Joseph Zibulewsky, MD
Emergency Medicine Physician · West Hills, CA
Joseph Zibulewsky, MD is an emergency medicine physician with a practice address in West Hills, California, and NPI 1679519532, issued on Jun 21, 2006. Check the license (California G64578, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Joseph Zibulewsky
- Credential
- MD
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- G64578 CA
Self-reported in NPPES; status is on the state search - Practice location
- 7300 Medical Center Dr, West Hills, CA 91307
- Phone
- (818) 676-4000
- Enumerated
- Jun 21, 2006
- Record last updated
- Aug 5, 2025
- Medicare enrollment
- Enrolled (PECOS I20200102000839); accepts Medicare assignment
- Medical or professional school
- Temple University School Of Medicine, 1987
- Entity
- Type 1 · individual
Also registered at 7300 Medical Center Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Stuart Ackerman, M.D.Anesthesiology Physician1942384250
- Edward Agazaryan, OTR/LOccupational Therapist1851819577
- Roofan Alsayegh, MDHospitalist Physician1477841641
- Neelam Amin, M.D.Anatomic Pathology & Clinical Pathology Physician1215956826
- Karen Arnold, P.A.Physician Assistant1407886070
- Eileen Bastian, M.D.Emergency Medicine Physician1861439267
Verify Joseph Zibulewsky in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G64578Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
17% fewer Medicare Part D claims than the average emergency medicine physician in 2024
187 Medicare Part D claims for 147 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. Brand-name drugs were 6% of claims. 13 claims were for opioids.
Most prescribed
- Cephalexin33 claims
- Prednisone18 claims
- Doxycycline Hyclate16 claims
- Albuterol Sulfate Hfa12 claims
- Ondansetron Odt12 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): 81.1 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 4 group practices
- Emergency Medicine Services OF TX, PLLCSan Antonio, TX
- Emergency Professional Services PCPhoenix, AZ
- Fremont Emergency Services Scherr LtdLas Vegas, NV
- San Francisco Physicians International Medical Group IncStockton, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
38 emergency medicine physician records list a practice address in West Hills
They are 38 of the 708 NPPES records with a practice address in West Hills, and 7,751 emergency medicine physician records in California.
All 38 in West Hills → All 7,751 in California → Every provider in West Hills →
Other emergency medicine physician records in California
- Cooper Aakhus, MDStanford, CA1194351007
- Pyra Aarden, MDMartinez, CA1417058199
- Neal Aaron, D.O.Encinitas, CA1114283520
- Eric AaserudeWalnut Creek, CA1811491194
- Nader Abas, MDBarstow, CA1346288305
- Michael Abbo, MDNovato, CA1205819042
- Daniel Abbott, MDFullerton, CA1518907864
- Paul-Andre Abboud, M.D.Oakland, CA1710065503
- Mostafa Abdel-Hamid, MDStanford, CA1457918740
- Ashraf Abdel-KerimChino, CA1396961538
Common questions
What is Joseph Zibulewsky, MD's NPI number?
Joseph Zibulewsky, MD's National Provider Identifier (NPI) is 1679519532, issued on Jun 21, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Joseph Zibulewsky, MD located?
The NPPES record lists a practice address at 7300 Medical Center Dr, West Hills, CA, 91307. Phone: (818) 676-4000. Providers update this record themselves, so call before visiting.
How can I verify Joseph Zibulewsky, MD's license?
NPPES lists California license number G64578, 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 Joseph Zibulewsky, MD prescribe under Medicare Part D?
In 2024, Joseph Zibulewsky, MD had 187 Medicare Part D claims for 147 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
What is Joseph Zibulewsky, MD's MIPS final score?
The 2023 MIPS final score is 81.1 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.