DENNIS LI
NPI 1356924559
Student in an Organized Health Care Education/Training Program in Walnut Creek, CA
About Dennis Li NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DENNIS LI (NPI 1356924559) is an individual student in an organized health care education/training program in Walnut Creek, California and active in the NPI registry since May 2021. He is enrolled in Medicare PECOS, maintains a secondary practice location in Walnut Creek, and is a graduate of Other (2023).
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
Dennis Li 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 Dennis Li reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Walnut Creek, CA 94597
- Reassigned Medicare billing, California enrollment
- 650 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.
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.
WALNUT CREEK, CA 94597
WALNUT CREEK, CA 94597
WALNUT CREEK, CA 94597
WALNUT CREEK, CA 94597
WALNUT CREEK, CA 94597
WALNUT CREEK, CA 94597
WALNUT CREEK, CA 94597
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 Dennis Li's NPI number?
The NPI number for Dennis Li is 1356924559. It was assigned to this individual provider in the NPPES registry on May 4, 2021.
Where is Dennis Li located?
Dennis Li practices at 1450 Treat Blvd Ste 320, Walnut Creek, CA 94597. The listed phone number is (925) 296-9827.
What is Dennis Li's specialty?
The primary specialty registered for this NPI is Student in an Organized Health Care Education/Training Program with taxonomy code 390200000X.
Is Dennis Li enrolled in Medicare?
Yes. Dennis Li 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 Dennis Li's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Dennis Li reassigns Medicare benefits to John Muir Physician Network (Walnut Creek, 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 Dennis Li'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 Dennis Li was last updated on November 18, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.
# Dennis Li · NPI 1356924559
Student in an Organized Health Care Education/Training Program provider in Walnut Creek, California. Individual provider, active in the CMS NPPES registry since May 4, 2021.
## Identity
- **NPI:** 1356924559 (Entity type: Individual)
- **Enumerated:** May 4, 2021
- **Primary specialty:** Student in an Organized Health Care Education/Training Program · taxonomy 390200000X
- **Sole proprietor:** No
## Practice location
- **Address:** 1450 TREAT BLVD STE 320, Walnut Creek, CA 94597-2168
- **Phone:** (925) 296-9827
## 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:** John Muir Physician Network (NPI 1841407665, Walnut Creek, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2023
## Record status
- **NPPES last updated:** November 18, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1356924559) · Data from the CMS NPPES public registry.