GRACE WU MD
NPI 1427435700
Otolaryngology - Otolaryngology/Facial Plastic Surgery in San Francisco, CA
About Grace Wu Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
GRACE WU MD (NPI 1427435700) is an individual otolaryngology/facial plastic surgery provider in San Francisco, California, licensed in California (A177633) and active in the NPI registry since May 2015. She is enrolled in Medicare PECOS and is a graduate of Other (2015).
NPPES Registry Identity
Specialties & Licenses
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
Grace Wu 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 Grace Wu reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
San Francisco, CA 94116
- Reassigned Medicare billing, California enrollment
- 20,078 clinicians in this Medicare group
Castro Valley, CA 94546
- Reassigned Medicare billing, California enrollment
- 347 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 11
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 5
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SAN FRANCISCO, CA 94118
SAN FRANCISCO, CA 94118
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 Grace Wu's NPI number?
The NPI number for Grace Wu is 1427435700. It was assigned to this individual provider in the NPPES registry on May 6, 2015.
Where is Grace Wu located?
Grace Wu practices at 3838 California St Rm 505, San Francisco, CA 94118. The listed phone number is (415) 751-4914.
What is Grace Wu's specialty?
The primary specialty registered for this NPI is Otolaryngology, specializing in Otolaryngology/Facial Plastic Surgery, with taxonomy code 207YX0905X.
Is Grace Wu enrolled in Medicare?
Yes. Grace Wu 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 Grace Wu's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Grace Wu reassigns Medicare benefits to 2 organizations: Permanente Medical Group Inc (San Francisco, CA) and Bass Medical Group (Castro 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 Grace Wu'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 Grace Wu was last updated on February 10, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 20 months 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.
# Grace Wu, MD · NPI 1427435700
Otolaryngology/Facial Plastic Surgery physician in San Francisco, California. Individual provider, active in the CMS NPPES registry since May 6, 2015.
## Identity
- **NPI:** 1427435700 (Entity type: Individual)
- **Enumerated:** May 6, 2015
- **Primary specialty:** Otolaryngology - Otolaryngology/Facial Plastic Surgery · taxonomy 207YX0905X
- **State license:** A177633 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 3838 CALIFORNIA ST RM 505, San Francisco, CA 94118-1507
- **Phone:** (415) 751-4914
## 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): Permanente Medical Group Inc (NPI 1841373800, San Francisco, CA); Bass Medical Group (NPI 1093181646, Castro Valley, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2015
## Record status
- **NPPES last updated:** February 10, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1427435700) · Data from the CMS NPPES public registry.