LI M. TSANG MD
NPI 1003994823
Anesthesiology in Vallejo, CA
About Li M. Tsang Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
LI M. TSANG MD (NPI 1003994823) is an individual anesthesiology provider in Vallejo, California, licensed in California (G68508) and active in the NPI registry since November 2006. She is enrolled in Medicare PECOS and is a graduate of Northeastern Ohio University College Of Medicine (1986).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 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
Li M. Tsang 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
6Medicare enrollment records show Li Tsang reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Vallejo, CA 94589
- Reassigned Medicare billing, California enrollment
- 12 clinicians in this Medicare group
Walnut Creek, CA 94598
- Reassigned Medicare billing, California enrollment
- 810 clinicians in this Medicare group
Walnut Creek, CA 94598
- Reassigned Medicare billing, California enrollment
- 833 clinicians in this Medicare group
San Ramon, CA 94583
- Reassigned Medicare billing, California enrollment
- 176 clinicians in this Medicare group
Davis, CA 95616
- Reassigned Medicare billing, California enrollment
- 2,570 clinicians in this Medicare group
Sacramento, CA 95821
- Reassigned Medicare billing, California enrollment
- 65 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.
Areas of Expertise CMS Part B claims 6
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
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.
VALLEJO, CA 94589
VALLEJO, CA 94589
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 Li Tsang's NPI number?
The NPI number for Li Tsang is 1003994823. It was assigned to this individual provider in the NPPES registry on November 1, 2006.
Where is Li Tsang located?
Li Tsang practices at 975 Sereno Dr, Vallejo, CA 94589. The listed phone number is (707) 651-1000.
What is Li Tsang's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Li Tsang enrolled in Medicare?
Yes. Li Tsang 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 Li Tsang's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Li Tsang reassigns Medicare benefits to 6 organizations: Solano Anesthesia Consultants Inc (Vallejo, CA), John Muir Trauma Physicians Billing Service (Walnut Creek, CA), Cep America - Anesthesia, PC (Walnut Creek, CA), Premier Anesthesia Of California, PC (San Ramon, CA), Regents Of The Univ Of Ca (Davis, CA) and 1 more organization, listed in the Medicare section above. 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 Li Tsang'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 Li Tsang was last updated on December 7, 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.
# Li M. Tsang, MD · NPI 1003994823
Anesthesiology physician in Vallejo, California. Individual provider, active in the CMS NPPES registry since November 1, 2006.
## Identity
- **NPI:** 1003994823 (Entity type: Individual)
- **Enumerated:** November 1, 2006
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** G68508 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 975 SERENO DR, Vallejo, CA 94589-2441
- **Phone:** (707) 651-1000
## 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:** 6 organizations under Medicare reassignment (form CMS-855R): Solano Anesthesia Consultants Inc (NPI 1588699508, Vallejo, CA); John Muir Trauma Physicians Billing Service (NPI 1962551861, Walnut Creek, CA); Cep America - Anesthesia, PC (NPI 1790401438, Walnut Creek, CA); Premier Anesthesia Of California, PC (NPI 1770691859, San Ramon, CA); Regents Of The Univ Of Ca (NPI 1053304071, Davis, CA); and 1 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Northeastern Ohio University College Of Medicine, class of 1986
## Record status
- **NPPES last updated:** December 7, 2021
- **Other identifiers:** Medicaid 00G685080 (CA)
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Source: [NPI Profile](https://npiprofile.com/npi/1003994823) · Data from the CMS NPPES public registry.