Toan Thach, O.D., Daly City: NPI Registry Record and Eye Exam Cost Context
What the registry record says
- NPI number
- 1770236390
- Legal business name
- Toan Thach, O.D.
- Registered trading name
- Toan Thach, O.D.
- Primary registered specialty
- Optometrist (152W00000X)
- Practice location
- 133 Serramonte Ctr
Daly City, CA 94015-2349 - Phone on the record
- (562) 912-9248
- NPI issued
- February 2, 2022
- Record last updated by the practice
- February 2, 2022
- Registry status
- NPI registry record, active as reported by CMS August 2026
- Metro area
- San Francisco-Oakland-Fremont, CA
- County
- San Mateo County
- Location precision
- Street address matched by the US Census geocoder
Reading this record
The entry was last refreshed in February 2022. That is neither fresh nor ancient by the standards of this metro, where 92 of 543 records were updated in 2024 or later and 332 predate 2020.
For local context: Daly City holds 16 registered eye care practices in this snapshot, 9 of them optometry and 7 ophthalmology, in ZIP codes including 94015. 13 of them took an NPI before this practice did. The closest is Riffle Optometric Corporation in Daly City, 0.0 miles away.
None of this is a licensing check. CMS issues an NPI so a provider can be identified in billing transactions, and states plainly that issuance does not ensure or validate that the holder is licensed or credentialed. The California boards hold the licensing record, and the practice itself is the only source for what it charges today.
Also registered at this address
1 other organization holds an NPI at the same street address. Shared suites and multi-specialty buildings are common, and it is worth knowing which entity you are actually booking with.
| Organization | Registered as | Record updated |
|---|---|---|
| Riffle Optometric Corporation | Optometry | January 2026 |
Nearest registered practices
357 other registered eye care practices sit within 25 miles of this address, a radius that does not stop at the metro boundary. Inside the San Francisco-Oakland-Fremont metro itself there are 543, 15 of them elsewhere in Daly City. The closest 5 are below, measured straight line between registered addresses.
| Practice | City | Registered as | Distance | Phone on record |
|---|---|---|---|---|
| Riffle Optometric Corporation | Daly City | Optometry | 0.0 mi | (650) 756-6684 |
| A. W. Meyer, Optometrist | Daly City | Optometry | 0.2 mi | (650) 992-8007 |
| Daly City Optometry | Daly City | Optometry | 0.2 mi | (650) 756-4000 |
| Anthony L. Villanueva,M.D., Inc. | Daly City | Ophthalmology | 0.2 mi | (650) 992-2010 |
| James H Abrams MD A Professional Corporation | Daly City | Ophthalmology | 0.2 mi | (650) 756-2020 |
Distances are straight line between registered practice locations, not driving distance. Records placed at a ZIP centroid rather than a matched street address are excluded from this comparison.
What to expect to pay at an optometry practice like this
The NPI registry holds no prices, so nothing here is a quote from Toan Thach, O.D.. Based on this site's own price research, an independent optometry practice typically charges $120 to $200 for an exam without insurance, against a national average of about $136 and roughly $25 once a vision plan pays its share.
Ask two things when you call: whether the quoted fee includes the refraction, and what a contact lens fitting adds if you wear lenses, since that takes a visit to $150 to $370. A comprehensive exam is $100 to $250. If price is the deciding factor, the 543 practices on the San Francisco-Oakland-Fremont page give you the full local field to call around.