MICHELLE SUN TONG MD
NPI 1043913122
Internal Medicine in Stanford, CA
About Michelle Sun Tong Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MICHELLE SUN TONG MD (NPI 1043913122) is an individual internal medicine provider in Stanford, California, licensed in California (A202120) and active in the NPI registry since March 2023. She is enrolled in Medicare PECOS, maintains a secondary practice location in San Francisco, and is a graduate of University Of California, San Francisco School Of Medicine (2023).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Michelle Sun Tong Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Michelle Tong reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Stanford, CA 94305
- Reassigned Medicare billing, California enrollment
- 4,258 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 94305 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.
STANFORD, CA 94305
STANFORD, CA 94305
STANFORD, CA 94305
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 Michelle Tong's NPI number?
The NPI number for Michelle Tong is 1043913122. It was assigned to this individual provider in the NPPES registry on March 27, 2023.
Where is Michelle Tong located?
Michelle Tong practices at 300 Pasteur Dr, Stanford, CA 94305. The listed phone number is (650) 723-4000.
What is Michelle Tong's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Michelle Tong enrolled in Medicare?
Yes. Michelle Tong is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Michelle Tong's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Michelle Tong reassigns Medicare benefits to Stanford Health Care (Stanford, 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 Michelle Tong'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 Michelle Tong was last updated on September 1, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.
# Michelle Sun Tong, MD · NPI 1043913122
Internal Medicine physician in Stanford, California. Individual provider, active in the CMS NPPES registry since March 27, 2023.
## Identity
- **NPI:** 1043913122 (Entity type: Individual)
- **Enumerated:** March 27, 2023
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** A202120 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 300 PASTEUR DR, Stanford, CA 94305-2200
- **Phone:** (650) 723-4000
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Stanford Health Care (NPI 1437292927, Stanford, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of California, San Francisco School Of Medicine, class of 2023
## Record status
- **NPPES last updated:** September 1, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1043913122) · Data from the CMS NPPES public registry.