DR. LIEM LECHAU M.D.
NPI 1396756052
Anesthesiology in Thousand Oaks, CA
About Dr. Liem Lechau M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. LIEM LECHAU M.D. (NPI 1396756052) is an individual anesthesiology provider in Thousand Oaks, California, licensed in California (G73558) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS and is a graduate of Virginia Commonwealth University, School Of Medicine (1989).
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
Dr. Liem Lechau 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 Liem Lechau reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Thousand Oaks, CA 91360
- Reassigned Medicare billing, California enrollment
- 53 clinicians in this Medicare group
Simi Valley, CA 93065
- Reassigned Medicare billing, California enrollment
- 37 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 8
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.
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.
THOUSAND OAKS, CA 91360
THOUSAND OAKS, CA 91360
THOUSAND OAKS, CA 91360
THOUSAND OAKS, CA 91360
THOUSAND OAKS, CA 91360
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 Liem Lechau's NPI number?
The NPI number for Liem Lechau is 1396756052. It was assigned to this individual provider in the NPPES registry on August 10, 2006.
Where is Liem Lechau located?
Liem Lechau practices at 215 W Janss Rd, Thousand Oaks, CA 91360. The listed phone number is (805) 370-4521.
What is Liem Lechau's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Liem Lechau enrolled in Medicare?
Yes. Liem Lechau 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 Liem Lechau's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Liem Lechau reassigns Medicare benefits to 2 organizations: Conejo Los Robles Anesthesiology Medical Group, Inc. (Thousand Oaks, CA) and Simi Valley Anesthesia Medical Group (Simi Valley, 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 Liem Lechau'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 Liem Lechau was last updated on December 20, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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. Liem Lechau, M.D. · NPI 1396756052
Anesthesiology physician in Thousand Oaks, California. Individual provider, active in the CMS NPPES registry since August 10, 2006.
## Identity
- **NPI:** 1396756052 (Entity type: Individual)
- **Enumerated:** August 10, 2006
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** G73558 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 215 W JANSS RD, Thousand Oaks, CA 91360-1847
- **Phone:** (805) 370-4521
## 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): Conejo Los Robles Anesthesiology Medical Group, Inc. (NPI 1821171729, Thousand Oaks, CA); Simi Valley Anesthesia Medical Group (NPI 1912936709, Simi Valley, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Virginia Commonwealth University, School Of Medicine, class of 1989
## Record status
- **NPPES last updated:** December 20, 2007
- **Other identifiers:** Medicare PIN G73558C (CA)
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Source: [NPI Profile](https://npiprofile.com/npi/1396756052) · Data from the CMS NPPES public registry.