JOYCE WANG M.D.
NPI 1225393101
Emergency Medicine in La Mesa, CA
About Joyce Wang M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JOYCE WANG M.D. (NPI 1225393101) is an individual emergency medicine provider in La Mesa, California, licensed in California (A140282) and active in the NPI registry since July 2012. She is enrolled in Medicare PECOS and is a graduate of State University Of New York At Buffalo School Of Medicine (2012).
NPPES Registry Identity
Specialties & Licenses
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
Joyce Wang 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
9Medicare enrollment records show Joyce Wang reassigns Medicare billing to 9 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
El Cajon, CA 92020
- Reassigned Medicare billing, California enrollment
- 577 clinicians in this Medicare group
San Diego, CA 92123
- Reassigned Medicare billing, California enrollment
- 80 clinicians in this Medicare group
Coronado, CA 92118
- Reassigned Medicare billing, California enrollment
- 44 clinicians in this Medicare group
Chula Vista, CA 91911
- Reassigned Medicare billing, California enrollment
- 1,204 clinicians in this Medicare group
Chula Vista, CA 91910
- Reassigned Medicare billing, California enrollment
- 44 clinicians in this Medicare group
Oceanside, CA 92056
- Reassigned Medicare billing, California enrollment
- 140 clinicians in this Medicare group
Newark, CA 94560
- Reassigned Medicare billing, California enrollment
- 900 clinicians in this Medicare group
Pleasanton, CA 94588
- Reassigned Medicare billing, California enrollment
- 202 clinicians in this Medicare group
San Ramon, CA 94583
- Reassigned Medicare billing, California enrollment
- 168 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 8
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 91942 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
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.
LA MESA, CA 91942
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 Joyce Wang's NPI number?
The NPI number for Joyce Wang is 1225393101. It was assigned to this individual provider in the NPPES registry on July 7, 2012.
Where is Joyce Wang located?
Joyce Wang practices at 5555 Grossmont Center Dr, La Mesa, CA 91942. The listed phone number is (619) 740-6000.
What is Joyce Wang's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Joyce Wang enrolled in Medicare?
Yes. Joyce Wang 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 Joyce Wang's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Joyce Wang reassigns Medicare benefits to 9 organizations: Centro De Salud De La Comunidad De San Ysidro, Inc. (El Cajon, CA), Emergency Services Medical Corporation (San Diego, CA), Emergency Services Medical Corporation Coronado (Coronado, CA), Cep America - California (Chula Vista, CA), Chula Vista Emergency Room Physicians, A Medical Corporation (Chula Vista, CA) and 4 more organizations, listed in the Medicare section above. 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 Joyce Wang'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 Joyce Wang was last updated on November 15, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.
# Joyce Wang, M.D. · NPI 1225393101
Emergency Medicine physician in La Mesa, California. Individual provider, active in the CMS NPPES registry since July 7, 2012.
## Identity
- **NPI:** 1225393101 (Entity type: Individual)
- **Enumerated:** July 7, 2012
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** A140282 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 5555 GROSSMONT CENTER DR, La Mesa, CA 91942-3019
- **Phone:** (619) 740-6000
## 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:** 9 organizations under Medicare reassignment (form CMS-855R): Centro De Salud De La Comunidad De San Ysidro, Inc. (NPI 1568845741, El Cajon, CA); Emergency Services Medical Corporation (NPI 1699725069, San Diego, CA); Emergency Services Medical Corporation Coronado (NPI 1598395675, Coronado, CA); Cep America - California (NPI 1457304529, Chula Vista, CA); Chula Vista Emergency Room Physicians, A Medical Corporation (NPI 1780021782, Chula Vista, CA); and 4 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** State University Of New York At Buffalo School Of Medicine, class of 2012
## Record status
- **NPPES last updated:** November 15, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1225393101) · Data from the CMS NPPES public registry.