Emmy Tian
NPI 1730876467 · Optometrist · San Francisco, CA
Enrolled with Medicare as Practitioner - Optometry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Emmy Tian is a Optometrist provider in San Francisco, CA (NPI 1730876467).
Provider details
- NPI number
- 1730876467
- Entity type
- Individual
- Primary specialty
- OptometristEye and Vision Services Providers
- Sex
- Female
- Sole proprietor
- No
- License
- 35500 (CA)
Specialties & taxonomies
Eye and Vision Services Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
3 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
3 documented practice locations
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$635 across 9 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (2)
- 284 Lafayette CirLafayette, CA 94549-4379Phone: (925) 284-1500
- 5321 College AveOakland, CA 94618-1416Phone: (510) 655-3797
Registry dates
- Enumerated
- 2023-04-21
- Last updated
- 2025-09-05
- Certified
- 2025-09-05
Frequently asked questions
- What is Emmy Tian's NPI number?
- Emmy Tian's National Provider Identifier (NPI) is 1730876467, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Emmy Tian's specialty?
- Emmy Tian is listed in the NPPES registry with a primary specialty of Optometrist (Eye and Vision Services Providers).
- Where is Emmy Tian located?
- Emmy Tian's practice location on file with NPPES is 490 Illinois Street, San Francisco, CA 94158.
- What is Emmy Tian's phone number?
- The practice phone number listed in the NPPES registry for Emmy Tian is (415) 353-2020.
- Does Emmy Tian accept Medicare?
- Emmy Tian is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Emmy Tian's NPI active?
- Yes — Emmy Tian's NPI (1730876467) is active in the NPPES registry as of the last update on 2025-09-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.