DR. JASON TAI SUN M.D.
NPI 1790906188
Internal Medicine - Hematology & Oncology in Redwood City, CA
About Dr. Jason Tai Sun M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. JASON TAI SUN M.D. (NPI 1790906188) is an individual hematology & oncology provider in Redwood City, California, licensed in California (A93301) and active in the NPI registry since May 2007. He is enrolled in Medicare PECOS and is a graduate of New York Medical College (2004).
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
Dr. Jason Tai Sun 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
2Medicare enrollment records show Jason Sun reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Redwood City, CA 94063
- Reassigned Medicare billing, California enrollment
- 20,078 clinicians in this Medicare group
Walnut Creek, CA 94598
- Reassigned Medicare billing, California enrollment
- 810 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 94063 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.
REDWOOD CITY, CA 94063
REDWOOD CITY, CA 94063
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 Jason Sun's NPI number?
The NPI number for Jason Sun is 1790906188. It was assigned to this individual provider in the NPPES registry on May 1, 2007.
Where is Jason Sun located?
Jason Sun practices at 1150 Veterans Blvd Suite 201, Redwood City, CA 94063. The listed phone number is (650) 299-4840.
What is Jason Sun's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.
Is Jason Sun enrolled in Medicare?
Yes. Jason 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 Jason Sun's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Jason Sun reassigns Medicare benefits to 2 organizations: Permanente Medical Group Inc (Redwood City, CA) and John Muir Trauma Physicians Billing Service (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 Jason 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 Jason Sun was last updated on December 17, 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.
# Dr. Jason Tai Sun, M.D. · NPI 1790906188
Hematology & Oncology physician in Redwood City, California. Individual provider, active in the CMS NPPES registry since May 1, 2007.
## Identity
- **NPI:** 1790906188 (Entity type: Individual)
- **Enumerated:** May 1, 2007
- **Primary specialty:** Internal Medicine - Hematology & Oncology · taxonomy 207RH0003X
- **State license:** A93301 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 1150 VETERANS BLVD, SUITE 201, Redwood City, CA 94063-2037
- **Phone:** (650) 299-4840
## 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): Permanente Medical Group Inc (NPI 1639252604, Redwood City, CA); John Muir Trauma Physicians Billing Service (NPI 1093864837, Walnut Creek, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** New York Medical College, class of 2004
## Record status
- **NPPES last updated:** December 17, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1790906188) · Data from the CMS NPPES public registry.