CHI-SENG LAM AA
NPI 1013913136
Anesthesiologist Assistant in La Crosse, WI
About Chi-seng Lam Aa NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
CHI-SENG LAM AA (NPI 1013913136) is an individual anesthesiologist assistant in La Crosse, Wisconsin, licensed in Wisconsin (8) and active in the NPI registry since June 2005. He is affiliated with Winona Health Services and is a graduate of Emory University School Of Medicine (2000).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 3
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
Chi-seng Lam Aa 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 Chi-seng Lam reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
La Crosse, WI 54601
- Reassigned Medicare billing, Wisconsin enrollment
- 928 clinicians in this Medicare group
La Crosse, WI 54601
- Reassigned Medicare billing, Wisconsin enrollment
- 1,457 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
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.
Hospital Affiliations CMS Care Compare 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Winona Health Services
Acute Care Hospitals · Winona, MNGundersen Lutheran Medical Center
Acute Care Hospitals · La Crosse, WIOther Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
LA CROSSE, WI 54601
LA CROSSE, WI 54601
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 Chi-seng Lam's NPI number?
The NPI number for Chi-seng Lam is 1013913136. It was assigned to this individual provider in the NPPES registry on June 23, 2005.
Where is Chi-seng Lam located?
Chi-seng Lam practices at 1836 South Ave, La Crosse, WI 54601. The listed phone number is (608) 782-7300.
What is Chi-seng Lam's specialty?
The primary specialty registered for this NPI is Anesthesiologist Assistant with taxonomy code 367H00000X.
Is Chi-seng Lam enrolled in Medicare?
Yes. Chi-seng Lam 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 Chi-seng Lam's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Chi-seng Lam reassigns Medicare benefits to 2 organizations: Gundersen Clinic Ltd (La Crosse, WI) and Gundersen Lutheran Medical Center, Inc (La Crosse, WI). 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 Chi-seng Lam's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Chi-seng Lam affiliated with any hospitals?
According to CMS data, Chi-seng Lam is affiliated with Winona Health Services and Gundersen Lutheran Medical Center.
When was this NPI record last updated?
The NPPES record for Chi-seng Lam was last updated on April 22, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.
# Chi-Seng Lam, AA · NPI 1013913136
Anesthesiologist Assistant physician in La Crosse, Wisconsin. Individual provider, active in the CMS NPPES registry since June 23, 2005.
## Identity
- **NPI:** 1013913136 (Entity type: Individual)
- **Enumerated:** June 23, 2005
- **Primary specialty:** Anesthesiologist Assistant · taxonomy 367H00000X
- **State license:** 8 (Wisconsin)
- **Sole proprietor:** No
## Practice location
- **Address:** 1836 SOUTH AVE, La Crosse, WI 54601-5429
- **Phone:** (608) 782-7300
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Gundersen Clinic Ltd (NPI 1851343115, La Crosse, WI); Gundersen Lutheran Medical Center, Inc (NPI 1619210895, La Crosse, WI) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Emory University School Of Medicine, class of 2000
## Record status
- **NPPES last updated:** April 22, 2013
- **Other identifiers:** Medicare PIN 0044 (WI); Medicare UPIN P22047; Medicaid 43406800 (WI)
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Source: [NPI Profile](https://npiprofile.com/npi/1013913136) · Data from the CMS NPPES public registry.