Isabel Duong, OD
NPI 1215421367 · Optometrist · Torrance, CA
Enrolled with Medicare as Practitioner - Optometry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Isabel Duong, OD is a Optometrist provider in Torrance, CA (NPI 1215421367).
Provider details
- NPI number
- 1215421367
- Entity type
- Individual
- Primary specialty
- OptometristEye and Vision Services Providers
- Credential
- OD
- Sex
- Female
- Sole proprietor
- No
- License
- 33977 (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
8 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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 8 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Latanoprost | 70 | 31 |
| Cyclosporinebrand: Restasis | 37 | 17 |
| Timolol Maleate | 25 | — |
| Cyclosporine | 21 | 12 |
| Brimonidine Tartrate/Timololbrand: Brimonidine Tartrate-Timolol | 19 | — |
| Dorzolamide Hcl/Timolol Maleatbrand: Dorzolamide-Timolol | 19 | — |
| Bimatoprostbrand: Lumigan | 12 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$615 across 17 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
- 2018-06-21
- Last updated
- 2023-05-12
- Certified
- 2023-05-12
Frequently asked questions
- What is Isabel Duong's NPI number?
- Isabel Duong's National Provider Identifier (NPI) is 1215421367, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Isabel Duong's specialty?
- Isabel Duong is listed in the NPPES registry with a primary specialty of Optometrist (Eye and Vision Services Providers).
- Where is Isabel Duong located?
- Isabel Duong's practice location on file with NPPES is 23600 Telo Ave Ste 100, Torrance, CA 90505-4036.
- What is Isabel Duong's phone number?
- The practice phone number listed in the NPPES registry for Isabel Duong is (310) 543-2611.
- Does Isabel Duong accept Medicare?
- Isabel Duong is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Isabel Duong's NPI active?
- Yes — Isabel Duong's NPI (1215421367) is active in the NPPES registry as of the last update on 2023-05-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.