DR. JOYCE JI MD
NPI 1659752822
Internal Medicine in San Diego, CA
About Dr. Joyce Ji Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. JOYCE JI MD (NPI 1659752822) is an individual internal medicine provider in San Diego, California, licensed in California (C200279) and active in the NPI registry since June 2015. She is enrolled in Medicare PECOS, maintains 2 additional practice locations, and is a graduate of Washington University School Of Medicine (2015).
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Locations 2
Other Identifiers 1
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
Dr. Joyce Ji Md 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
2Medicare enrollment records show Joyce Ji reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
San Diego, CA 92103
- Reassigned Medicare billing, California enrollment
- 1,051 clinicians in this Medicare group
Saint Louis, MO 63110
- Reassigned Medicare billing, Missouri enrollment
- 1,133 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 5
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 92103 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.
SAN DIEGO, CA 92103
SAN DIEGO, CA 92103
SAN DIEGO, CA 92103
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 Ji's NPI number?
The NPI number for Joyce Ji is 1659752822. It was assigned to this individual provider in the NPPES registry on June 14, 2015.
Where is Joyce Ji located?
Joyce Ji practices at 200 W Arbor Dr, San Diego, CA 92103. The listed phone number is (800) 926-8273.
What is Joyce Ji's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Joyce Ji enrolled in Medicare?
Yes. Joyce Ji 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 Ji's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Joyce Ji reassigns Medicare benefits to 2 organizations: Regents Of The University Of California (San Diego, CA) and Washington University (Saint Louis, MO). 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 Ji'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 Ji was last updated on May 8, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 months 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.
# Dr. Joyce Ji, MD · NPI 1659752822
Internal Medicine physician in San Diego, California. Individual provider, active in the CMS NPPES registry since June 14, 2015.
## Identity
- **NPI:** 1659752822 (Entity type: Individual)
- **Enumerated:** June 14, 2015
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** C200279 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 200 W ARBOR DR, San Diego, CA 92103-9000
- **Phone:** (800) 926-8273 · **Fax:** (888) 539-8781
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Regents Of The University Of California (NPI 1487772380, San Diego, CA); Washington University (NPI 1992746903, Saint Louis, MO) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Washington University School Of Medicine, class of 2015
## Record status
- **NPPES last updated:** May 8, 2025
- **Other identifiers:** Medicaid 200058181 (MO)
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Source: [NPI Profile](https://npiprofile.com/npi/1659752822) · Data from the CMS NPPES public registry.