Chau Bui, OD
NPI 1861054769 · Optometrist · Portland, OR
Enrolled with Medicare as Practitioner - Optometry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Chau Bui, OD is a Optometrist provider in Portland, OR (NPI 1861054769).
Provider details
- NPI number
- 1861054769
- Entity type
- Individual
- Primary specialty
- OptometristEye and Vision Services Providers
- Credential
- OD
- Sex
- Female
- Sole proprietor
- No
- License
- AT-4458 (OR)
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
6 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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 4 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Latanoprost | 71 | 22 |
| Timolol Maleate | 21 | — |
| Cyclosporine | 19 | — |
| Erythromycin Basebrand: Erythromycin | 12 | — |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$152 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
Additional practice locations (2)
- 12100 Se Stevens CtClackamas, OR 97086-4707Phone: (800) 813-2000
- 1750 Mcgilchrist St SeSalem, OR 97302-1691Phone: (971) 304-2200
Registry dates
- Enumerated
- 2019-07-01
- Last updated
- 2026-04-07
- Certified
- 2026-04-07
Frequently asked questions
- What is Chau Bui's NPI number?
- Chau Bui's National Provider Identifier (NPI) is 1861054769, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Chau Bui's specialty?
- Chau Bui is listed in the NPPES registry with a primary specialty of Optometrist (Eye and Vision Services Providers).
- Where is Chau Bui located?
- Chau Bui's practice location on file with NPPES is 3600 N Interstate Ave, Portland, OR 97227-1106.
- What is Chau Bui's phone number?
- The practice phone number listed in the NPPES registry for Chau Bui is (800) 813-2000.
- Does Chau Bui accept Medicare?
- Chau Bui is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Chau Bui's NPI active?
- Yes — Chau Bui's NPI (1861054769) is active in the NPPES registry as of the last update on 2026-04-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.