CYNTHIA W. LEUNG MD
NPI 1861570434
Internal Medicine - Gastroenterology in Redwood City, CA
About Cynthia W. Leung Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
CYNTHIA W. LEUNG MD (NPI 1861570434) is an individual gastroenterology provider in Redwood City, California, licensed in California (A84052) and active in the NPI registry since November 2006. She is enrolled in Medicare PECOS and is a graduate of Stanford University School Of Medicine (2002).
NPPES Registry Identity
Specialties & Licenses 2
Other Identifiers 2
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
Cynthia W. Leung 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
2Medicare enrollment records show Cynthia Leung reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Redwood City, CA 94062
- Reassigned Medicare billing, California enrollment
- 5 clinicians in this Medicare group
San Francisco, CA 94143
- Reassigned Medicare billing, California enrollment
- 82 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 94062 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
REDWOOD CITY, CA 94062
REDWOOD CITY, CA 94062
REDWOOD CITY, CA 94062
REDWOOD CITY, CA 94062
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 Cynthia Leung's NPI number?
The NPI number for Cynthia Leung is 1861570434. It was assigned to this individual provider in the NPPES registry on November 1, 2006.
Where is Cynthia Leung located?
Cynthia Leung practices at 2900 Whipple Ave Suite 245, Redwood City, CA 94062. The listed phone number is (650) 365-3700.
What is Cynthia Leung's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.
Is Cynthia Leung enrolled in Medicare?
Yes. Cynthia Leung 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 Cynthia Leung's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Cynthia Leung reassigns Medicare benefits to 2 organizations: Peninsula Gastroenterology Medical Group Inc (Redwood City, CA) and Regents Of The University Of California - Ucsf (San Francisco, 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 Cynthia Leung'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 Cynthia Leung was last updated on September 13, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.
# Cynthia W. Leung, MD · NPI 1861570434
Gastroenterology physician in Redwood City, California. Individual provider, active in the CMS NPPES registry since November 1, 2006.
## Identity
- **NPI:** 1861570434 (Entity type: Individual)
- **Enumerated:** November 1, 2006
- **Primary specialty:** Internal Medicine - Gastroenterology · taxonomy 207RG0100X
- **State license:** A84052 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 2900 WHIPPLE AVE, SUITE 245, Redwood City, CA 94062-2843
- **Phone:** (650) 365-3700 · **Fax:** (650) 368-3836
## 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): Peninsula Gastroenterology Medical Group Inc (NPI 1558434589, Redwood City, CA); Regents Of The University Of California - Ucsf (NPI 1265890263, San Francisco, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Stanford University School Of Medicine, class of 2002
## Record status
- **NPPES last updated:** September 13, 2011
- **Other identifiers:** Medicare ID-Type Unspecified 00A840520; Medicare UPIN I72378 (CA)
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Source: [NPI Profile](https://npiprofile.com/npi/1861570434) · Data from the CMS NPPES public registry.