William Joseph Kopelman, M.D.
Emergency Medicine Physician · Anaheim, CA
William Joseph Kopelman, M.D. is an emergency medicine physician with a practice address in Anaheim, California, and NPI 1457318164, issued on Apr 27, 2006. Check the license (California C53462, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- William Joseph Kopelman
- Credential
- M.D.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License numbers
- C53462 CA
MD417831 PA
Self-reported in NPPES; status is on the state search - Practice location
- 3010 W Orange Ave, Anaheim, CA 92804
- Phone
- (714) 821-8250
- Enumerated
- Apr 27, 2006
- Record last updated
- Nov 21, 2014 (not updated in 12 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20090406000564); accepts Medicare assignment
- Medical or professional school
- Brody School Of Medicine At East Carolina University, 1996
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 7,751 in California → Look up another NPI →
Also registered at 3010 W Orange Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify William Joseph Kopelman in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license C53462Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
78% fewer Medicare Part D claims than the average emergency medicine physician in 2024
49 Medicare Part D claims for 32 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D.
Most prescribed
- Levofloxacin11 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.
Bills Medicare through one group practice
- Erx Plus Professional CorporationSun Valley, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William Joseph Kopelman among 7,751 emergency medicine physician records in California
William Joseph Kopelman, M.D. is one of 7,751 emergency medicine physician records with a practice address in California. 81% 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 4% of them.
- NPI issued2006 · 4% of these records are older, 60% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated1996 · median 2011 among the 4,560 with a school on file
- Record last updated2014 · 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 207P00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Emergency Medicine Physician providers in California
There are 7,751 emergency medicine physician records in California.
All 7,751 in California → Every provider in Anaheim → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- George Baskevitch, MDAnaheim, CA 928041215993399
- Rocky Benoit, MDAnaheim, CA 928041245337609
- Jonathan Birnbaum, MDAnaheim, CA 928041265483176
- Teodora Bonuan, MDAnaheim, CA 928041427076207
- Ralph Conner, DOAnaheim, CA 928041114941812
- Keith Errecart, MDAnaheim, CA 928041134359102
- Tasha Fernando, M.D.Anaheim, CA 928041508202144
- Claus Hecht, MDAnaheim, CA 928041861459190
Common questions
What is William Joseph Kopelman, M.D.'s NPI number?
William Joseph Kopelman, M.D.'s National Provider Identifier (NPI) is 1457318164, issued on Apr 27, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William Joseph Kopelman, M.D. located?
The NPPES record lists a practice address at 3010 W Orange Ave, Anaheim, CA, 92804. Phone: (714) 821-8250. Providers update this record themselves, so call before visiting.
How can I verify William Joseph Kopelman, M.D.'s license?
NPPES lists California license number C53462, 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 William Joseph Kopelman, M.D. prescribe under Medicare Part D?
In 2024, William Joseph Kopelman, M.D. had 49 Medicare Part D claims for 32 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
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.