Crystal Sin, OD
NPI 1861264723 · Optometrist · Federal Way, WA
Enrolled with Medicare as Practitioner - Optometry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Crystal Sin, OD is a Optometrist provider in Federal Way, WA (NPI 1861264723).
Provider details
- NPI number
- 1861264723
- Entity type
- Individual
- Primary specialty
- OptometristEye and Vision Services Providers
- Credential
- OD
- Sex
- Female
- Sole proprietor
- No
- License
- OD61491957 (WA)
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
2 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.
$872 across 12 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
- 2023-10-24
- Last updated
- 2023-10-24
- Certified
- 2023-10-24
Frequently asked questions
- What is Crystal Sin's NPI number?
- Crystal Sin's National Provider Identifier (NPI) is 1861264723, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Crystal Sin's specialty?
- Crystal Sin is listed in the NPPES registry with a primary specialty of Optometrist (Eye and Vision Services Providers).
- Where is Crystal Sin located?
- Crystal Sin's practice location on file with NPPES is 1705 S 324th Pl, Federal Way, WA 98003-8504.
- What is Crystal Sin's phone number?
- The practice phone number listed in the NPPES registry for Crystal Sin is (253) 661-6005.
- Does Crystal Sin accept Medicare?
- Crystal Sin is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Crystal Sin's NPI active?
- Yes — Crystal Sin's NPI (1861264723) is active in the NPPES registry as of the last update on 2023-10-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.