MAGGIE KAM CHAN O.D.
NPI 1801245949
Optometrist in San Francisco, CA
About Maggie Kam Chan O.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MAGGIE KAM CHAN O.D. (NPI 1801245949) is an individual optometrist in San Francisco, California, licensed in California (33391) and active in the NPI registry since June 2016. She is enrolled in Medicare PECOS.
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 (PECOS)
Maggie Kam Chan O.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Maggie Chan reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
San Francisco, CA 94116
- Reassigned Medicare billing, California enrollment
- 20,078 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 94123 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
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 Maggie Chan's NPI number?
The NPI number for Maggie Chan is 1801245949. It was assigned to this individual provider in the NPPES registry on June 9, 2016.
Where is Maggie Chan located?
Maggie Chan practices at 2100 Union St, San Francisco, CA 94123. The listed phone number is (415) 561-9948.
What is Maggie Chan's specialty?
The primary specialty registered for this NPI is Optometrist with taxonomy code 152W00000X.
Is Maggie Chan enrolled in Medicare?
Yes. Maggie Chan is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Maggie Chan's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Maggie Chan reassigns Medicare benefits to Permanente Medical Group Inc (San Francisco, 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 Maggie Chan'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 Maggie Chan was last updated on February 11, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.