QISI SUN MD
NPI 1093396665
Dermatology in Palo Alto, CA
About Qisi Sun Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
QISI SUN MD (NPI 1093396665) is an individual dermatology provider in Palo Alto, California, licensed in California (A181318) and active in the NPI registry since April 2021. She is enrolled in Medicare PECOS and is a graduate of Yale University School Of Medicine (2021).
NPPES Registry Identity
Specialties & Licenses 2
Other Names 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
Qisi Sun 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 Qisi Sun reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Menlo Park, CA 94025
- Reassigned Medicare billing, California enrollment
- 3 clinicians in this Medicare group
Walnut Creek, CA 94598
- Reassigned Medicare billing, California enrollment
- 103 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 94304 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.
PALO ALTO, CA 94304
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 Qisi Sun's NPI number?
The NPI number for Qisi Sun is 1093396665. It was assigned to this individual provider in the NPPES registry on April 15, 2021. The provider is also known as Mary Sun.
Where is Qisi Sun located?
Qisi Sun practices at 300 Pasteur Dr, Palo Alto, CA 94304. The listed phone number is (405) 509-4025.
What is Qisi Sun's specialty?
The primary specialty registered for this NPI is Dermatology with taxonomy code 207N00000X.
Is Qisi Sun enrolled in Medicare?
Yes. Qisi Sun 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 Qisi Sun's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Qisi Sun reassigns Medicare benefits to 2 organizations: Crane Street Dermatology (Menlo Park, CA) and Golden State Dermatology Associates Inc (Walnut Creek, 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 Qisi Sun'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 Qisi Sun was last updated on September 13, 2022. 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.
# Qisi Sun, MD · NPI 1093396665
Dermatology physician in Palo Alto, California. Individual provider, active in the CMS NPPES registry since April 15, 2021.
## Identity
- **NPI:** 1093396665 (Entity type: Individual)
- **Enumerated:** April 15, 2021
- **Primary specialty:** Dermatology · taxonomy 207N00000X
- **State license:** A181318 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 300 PASTEUR DR, Palo Alto, CA 94304-2203
- **Phone:** (405) 509-4025
## 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): Crane Street Dermatology (NPI 1801293154, Menlo Park, CA); Golden State Dermatology Associates Inc (NPI 1700860871, Walnut Creek, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Yale University School Of Medicine, class of 2021
## Record status
- **NPPES last updated:** September 13, 2022
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Source: [NPI Profile](https://npiprofile.com/npi/1093396665) · Data from the CMS NPPES public registry.