EMMY TIAN
NPI 1730876467
Optometrist in San Francisco, CA
About Emmy Tian NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
EMMY TIAN (NPI 1730876467) is an individual optometrist in San Francisco, California, licensed in California (35500) and active in the NPI registry since April 2023. She is enrolled in Medicare PECOS, maintains 2 additional practice locations, and is a graduate of Other (2023).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Locations 2
Accepted Insurance
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
Emmy Tian 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
4Medicare enrollment records show Emmy Tian reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
San Francisco, CA 94143
- Reassigned Medicare billing, California enrollment
- 5,645 clinicians in this Medicare group
San Francisco, CA 94122
- Reassigned Medicare billing, California enrollment
- 5,544 clinicians in this Medicare group
Oakland, CA 94618
- Reassigned Medicare billing, California enrollment
- Medicare enrollment name: Rockridge Optometry
- 6 clinicians in this Medicare group
Los Angeles, CA 90037
- Reassigned Medicare billing, California enrollment
- Medicare enrollment name: Marshall B Ketchum University
- 131 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 94158 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 10
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SAN FRANCISCO, CA 94158
SAN FRANCISCO, CA 94158
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 Emmy Tian's NPI number?
The NPI number for Emmy Tian is 1730876467. It was assigned to this individual provider in the NPPES registry on April 21, 2023.
Where is Emmy Tian located?
Emmy Tian practices at 490 Illinois Street, San Francisco, CA 94158. The listed phone number is (415) 353-2020.
What is Emmy Tian's specialty?
The primary specialty registered for this NPI is Optometrist with taxonomy code 152W00000X.
Is Emmy Tian enrolled in Medicare?
Yes. Emmy Tian 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 Emmy Tian's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Emmy Tian reassigns Medicare benefits to 4 organizations: University Of California San Francisco (San Francisco, CA), Ucsf Medical Group Business Services (San Francisco, CA), Sakai And Junge Optometry Corp. (Oakland, CA) and Marshall B. Ketchum University/University Eye Center At Los Angeles (Los Angeles, 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 Emmy Tian's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Emmy Tian accept?
Health plans from Providence Health Plan list Emmy Tian as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Emmy Tian was last updated on September 5, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.
# Emmy Tian · NPI 1730876467
Optometrist provider in San Francisco, California. Individual provider, active in the CMS NPPES registry since April 21, 2023.
## Identity
- **NPI:** 1730876467 (Entity type: Individual)
- **Enumerated:** April 21, 2023
- **Primary specialty:** Optometrist · taxonomy 152W00000X
- **State license:** 35500 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 490 ILLINOIS STREET, San Francisco, CA 94158
- **Phone:** (415) 353-2020
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health
- **Bills Medicare through:** 4 organizations under Medicare reassignment (form CMS-855R): University Of California San Francisco (NPI 1346329380, San Francisco, CA); Ucsf Medical Group Business Services (NPI 1477624104, San Francisco, CA); Sakai And Junge Optometry Corp. (NPI 1760532659, Oakland, CA); Marshall B. Ketchum University/University Eye Center At Los Angeles (NPI 1558467225, Los Angeles, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2023
## Record status
- **NPPES last updated:** September 5, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1730876467) · Data from the CMS NPPES public registry.