SZE HOAY DING M.D.
NPI 1023239035
Internal Medicine in San Marcos, CA
About Sze Hoay Ding M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
SZE HOAY DING M.D. (NPI 1023239035) is an individual internal medicine provider in San Marcos, California, licensed in California (C141004) and active in the NPI registry since May 2007. She is enrolled in Medicare PECOS and is a graduate of Other (2000).
NPPES Registry Identity
Specialties & Licenses
Other Names 1
Group Practice 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
Sze Hoay Ding 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 Reassignment
Medicare enrollment records show Sze Hoay Ding reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
San Diego, CA 92120
- Reassigned Medicare billing, California enrollment
- 13,921 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 92078 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.
SAN MARCOS, CA 92078
SAN MARCOS, CA 92078
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 Sze Hoay Ding's NPI number?
The NPI number for Sze Hoay Ding is 1023239035. It was assigned to this individual provider in the NPPES registry on May 1, 2007. The provider is also known as Sze H Ding.
Where is Sze Hoay Ding located?
Sze Hoay Ding practices at 400 Craven Rd, San Marcos, CA 92078. The listed phone number is (619) 318-7476.
What is Sze Hoay Ding's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Sze Hoay Ding enrolled in Medicare?
Yes. Sze Hoay Ding 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 organization bills Medicare for Sze Hoay Ding's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Sze Hoay Ding reassigns Medicare benefits to Southern California Permanente Medical Group (San Diego, CA). The 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 Sze Hoay Ding'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 Sze Hoay Ding was last updated on March 7, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.
# Sze Hoay Ding, M.D. · NPI 1023239035
Internal Medicine physician in San Marcos, California. Individual provider, active in the CMS NPPES registry since May 1, 2007.
## Identity
- **NPI:** 1023239035 (Entity type: Individual)
- **Enumerated:** May 1, 2007
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** C141004 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 400 CRAVEN RD, San Marcos, CA 92078-4201
- **Phone:** (619) 318-7476
## 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:** Southern California Permanente Medical Group (NPI 1225060742, San Diego, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2000
## Record status
- **NPPES last updated:** March 7, 2023
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Source: [NPI Profile](https://npiprofile.com/npi/1023239035) · Data from the CMS NPPES public registry.