HAYWON LIEH MD
NPI 1013952308
Anesthesiology in Walnut Creek, CA
About Haywon Lieh Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
HAYWON LIEH MD (NPI 1013952308) is an individual anesthesiology provider in Walnut Creek, California, licensed in California (A47721) and active in the NPI registry since June 2006. She is enrolled in Medicare PECOS and is a graduate of University Of California, San Francisco School Of Medicine (1986).
NPPES Registry Identity
Specialties & Licenses 2
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
Haywon Lieh 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 Reassignment
Medicare enrollment records show Haywon Lieh reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Los Gatos, CA 95032
- Reassigned Medicare billing, California enrollment
- 140 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.
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.
Reported Quality Measures
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 94598
WALNUT CREEK, CA 94598
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 Haywon Lieh's NPI number?
The NPI number for Haywon Lieh is 1013952308. It was assigned to this individual provider in the NPPES registry on June 19, 2006.
Where is Haywon Lieh located?
Haywon Lieh practices at 1601 Ygnacio Valley Rd, Walnut Creek, CA 94598. The listed phone number is (925) 939-3000.
What is Haywon Lieh's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Haywon Lieh enrolled in Medicare?
Yes. Haywon Lieh 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 Haywon Lieh's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Haywon Lieh reassigns Medicare benefits to G2 Anesthesia PC (Los Gatos, 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 Haywon Lieh'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 Haywon Lieh was last updated on January 20, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.
# Haywon Lieh, MD · NPI 1013952308
Anesthesiology physician in Walnut Creek, California. Individual provider, active in the CMS NPPES registry since June 19, 2006.
## Identity
- **NPI:** 1013952308 (Entity type: Individual)
- **Enumerated:** June 19, 2006
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** A47721 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 1601 YGNACIO VALLEY RD, Walnut Creek, CA 94598-3122
- **Phone:** (925) 939-3000 · **Fax:** (925) 947-5286
## 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:** G2 Anesthesia PC (NPI 1487214698, Los Gatos, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of California, San Francisco School Of Medicine, class of 1986
## Record status
- **NPPES last updated:** January 20, 2023
- **Other identifiers:** Medicaid 00A477210 (CA)
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Source: [NPI Profile](https://npiprofile.com/npi/1013952308) · Data from the CMS NPPES public registry.