DR. KENNETH S POON
NPI 1366768541
Internal Medicine - Hematology & Oncology in San Leandro, CA
About Dr. Kenneth S Poon NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. KENNETH S POON (NPI 1366768541) is an individual hematology & oncology provider in San Leandro, California, licensed in California (A139907) and active in the NPI registry since April 2010. He is enrolled in Medicare PECOS, maintains a secondary practice location in Denver, and is a graduate of University Of Chicago, Pritzker School Of Medicine (2010).
NPPES Registry Identity
Specialties & Licenses 2
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 and accepts Medicare assignment
Dr. Kenneth S Poon 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
4Medicare enrollment records show Kenneth Poon reassigns Medicare billing to 4 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
Renton, WA 98057
- Reassigned Medicare billing, Washington enrollment
- 2,678 clinicians in this Medicare group
Denver, CO 80247
- Reassigned Medicare billing, Colorado enrollment
- Medicare enrollment name: Colorado Permanente Medical Group PC
- 1,715 clinicians in this Medicare group
Honolulu, HI 96819
- Reassigned Medicare billing, Hawaii enrollment
- 1,187 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 94577 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.
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 Kenneth Poon's NPI number?
The NPI number for Kenneth Poon is 1366768541. It was assigned to this individual provider in the NPPES registry on April 13, 2010.
Where is Kenneth Poon located?
Kenneth Poon practices at 2500 Merced St Kaiser Permanente San Leandro Medical Center, San Leandro, CA 94577. The listed phone number is (510) 454-2760.
What is Kenneth Poon's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.
Is Kenneth Poon enrolled in Medicare?
Yes. Kenneth Poon 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 Kenneth Poon's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Kenneth Poon reassigns Medicare benefits to 4 organizations: Permanente Medical Group Inc (Redwood City, CA), Kaiser Foundation Health Plan Of Washington (Renton, WA), Colorado Permanente Medical Group, P.C. (Denver, CO) and Hawaii Permanente Medical Group Inc (Honolulu, HI). 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 Kenneth Poon'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 Kenneth Poon was last updated on May 1, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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. Kenneth S Poon · NPI 1366768541
Hematology & Oncology physician in San Leandro, California. Individual provider, active in the CMS NPPES registry since April 13, 2010.
## Identity
- **NPI:** 1366768541 (Entity type: Individual)
- **Enumerated:** April 13, 2010
- **Primary specialty:** Internal Medicine - Hematology & Oncology · taxonomy 207RH0003X
- **State license:** A139907 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 2500 MERCED ST, KAISER PERMANENTE SAN LEANDRO MEDICAL CENTER, San Leandro, CA 94577-4201
- **Phone:** (510) 454-2760
## 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:** 4 organizations under Medicare reassignment (form CMS-855R): Permanente Medical Group Inc (NPI 1639252604, Redwood City, CA); Kaiser Foundation Health Plan Of Washington (NPI 1124264577, Renton, WA); Colorado Permanente Medical Group, P.C. (NPI 1760599724, Denver, CO); Hawaii Permanente Medical Group Inc (NPI 1710945969, Honolulu, HI) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Chicago, Pritzker School Of Medicine, class of 2010
## Record status
- **NPPES last updated:** May 1, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1366768541) · Data from the CMS NPPES public registry.