WILLIAM JOSEPH KOPELMAN M.D.
NPI 1457318164
Clinic/Center - Primary Care in Anaheim, CA
About William Joseph Kopelman M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
WILLIAM JOSEPH KOPELMAN M.D. (NPI 1457318164) is an individual primary care provider in Anaheim, California, licensed in California (C53462) and active in the NPI registry since April 2006. He is enrolled in Medicare PECOS and is a graduate of Brody School Of Medicine At East Carolina University (1996).
NPPES Registry Identity
Specialties & Licenses 2
Other Identifiers 5
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
William Joseph Kopelman M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
5Medicare enrollment records show William Kopelman reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Anaheim, CA 92801
- Reassigned Medicare billing, California enrollment
- 40 clinicians in this Medicare group
Gardena, CA 90247
- Reassigned Medicare billing, California enrollment
- 57 clinicians in this Medicare group
Sun Valley, CA 91352
- Reassigned Medicare billing, California enrollment
- 11 clinicians in this Medicare group
Hemet, CA 92543
- Reassigned Medicare billing, California enrollment
- 129 clinicians in this Medicare group
Bakersfield, CA 93301
- Reassigned Medicare billing, California enrollment
- 163 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 2
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 92804 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
ANAHEIM, CA 92804
ANAHEIM, CA 92804
ANAHEIM, CA 92804
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is William Kopelman's NPI number?
The NPI number for William Kopelman is 1457318164. It was assigned to this individual provider in the NPPES registry on April 27, 2006.
Where is William Kopelman located?
William Kopelman practices at 3010 W Orange Ave Suite 503, Anaheim, CA 92804. The listed phone number is (714) 821-8250.
What is William Kopelman's specialty?
The primary specialty registered for this NPI is Clinic/Center, specializing in Primary Care, with taxonomy code 261QP2300X.
Is William Kopelman enrolled in Medicare?
Yes. William Kopelman is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for William Kopelman's services?
According to the CMS Revalidation Reassignment List (October 2026 release), William Kopelman reassigns Medicare benefits to 5 organizations: Southland Emergency Medical Associates Inc (Anaheim, CA), Redondo Emergency Physicians, Inc. (Gardena, CA), Erx Plus Professional Corporation (Sun Valley, CA), Apex Emergency Medical Group, Inc. (Hemet, CA) and Grand Avenue Emergency Physicians Medical Group Inc (Bakersfield, CA). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for William Kopelman's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for William Kopelman was last updated on November 21, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# William Joseph Kopelman, M.D. · NPI 1457318164
Primary Care provider in Anaheim, California. Individual provider, active in the CMS NPPES registry since April 27, 2006.
## Identity
- **NPI:** 1457318164 (Entity type: Individual)
- **Enumerated:** April 27, 2006
- **Primary specialty:** Clinic/Center - Primary Care · taxonomy 261QP2300X
- **State license:** C53462 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 3010 W ORANGE AVE, SUITE 503, Anaheim, CA 92804-3169
- **Phone:** (714) 821-8250
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 5 organizations under Medicare reassignment (form CMS-855R): Southland Emergency Medical Associates Inc (NPI 1932640935, Anaheim, CA); Redondo Emergency Physicians, Inc. (NPI 1376834937, Gardena, CA); Erx Plus Professional Corporation (NPI 1003681693, Sun Valley, CA); Apex Emergency Medical Group, Inc. (NPI 1265711089, Hemet, CA); Grand Avenue Emergency Physicians Medical Group Inc (NPI 1962913632, Bakersfield, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Brody School Of Medicine At East Carolina University, class of 1996
## Record status
- **NPPES last updated:** November 21, 2014
- **Other identifiers:** Medicare PIN BN519V (CA); Medicare PIN BN519W (CA); Medicare PIN BN519Y (CA); and 2 more
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Source: [NPI Profile](https://npiprofile.com/npi/1457318164) · Data from the CMS NPPES public registry.