May Chan, OPTOMETRY DOCTOR
NPI 1851425110 · Optometrist · Elk Grove, CA
May Chan, OPTOMETRY DOCTOR is a Optometrist provider in Elk Grove, CA (NPI 1851425110).
Provider details
- NPI number
- 1851425110
- Entity type
- Individual
- Primary specialty
- OptometristEye and Vision Services Providers
- Credential
- OPTOMETRY DOCTOR
- Sex
- Female
- Sole proprietor
- Yes
- License
- 5642 (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
19 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- 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.
$124 across 2 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
Registry dates
- Enumerated
- 2007-03-16
- Last updated
- 2007-07-08
Frequently asked questions
- What is May Chan's NPI number?
- May Chan's National Provider Identifier (NPI) is 1851425110, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is May Chan's specialty?
- May Chan is listed in the NPPES registry with a primary specialty of Optometrist (Eye and Vision Services Providers).
- Where is May Chan located?
- May Chan's practice location on file with NPPES is 9684 Coney Island Cir, Elk Grove, CA 95758-3650.
- What is May Chan's phone number?
- The practice phone number listed in the NPPES registry for May Chan is (916) 421-7915.
- Is May Chan's NPI active?
- Yes — May Chan's NPI (1851425110) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.