Carolyn Duong, OD
NPI 1073878096 · Optometrist · Orange, CA
Enrolled with Medicare as Practitioner - Optometry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Carolyn Duong, OD is a Optometrist provider in Orange, CA (NPI 1073878096).
Provider details
- NPI number
- 1073878096
- Entity type
- Individual
- Primary specialty
- OptometristEye and Vision Services Providers
- Credential
- OD
- Sex
- Female
- Sole proprietor
- No
- License
- 14422 (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 tenure25% of score
13 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
662 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. 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 .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Complete Exam of Visual System92014 | 184 | $139 |
| Imaging of Retina92134 | 179 | $44 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 134 | $99 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 47 | $139 |
| Imaging of Optic Nerve92133 | 46 | $39 |
| Measurement of Corneal Curvature and Depth of Eye92136 | 36 | $42 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 7 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Latanoprost | 121 | 35 |
| Prednisolone Acetate | 113 | 78 |
| Moxifloxacin Hclbrand: Moxifloxacin | 92 | 74 |
| Brimonidine Tartrate | 54 | 16 |
| Dorzolamide Hcl/Timolol Maleatbrand: Dorzolamide-Timolol | 51 | 22 |
| Timolol Maleate | 40 | 16 |
| Brinzolamidebrand: Azopt | 14 | — |
These counts cover prescriptions paid through Medicare Part D in 2024 — they include 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 , 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.
$235 across 4 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 (1)
- 300 Stein PlzUniversity of California Los AngelesLos Angeles, CA 90095-0001Phone: (310) 825-5000Fax: (310) 825-6919
Registry dates
- Enumerated
- 2012-07-05
- Last updated
- 2024-10-25
- Certified
- 2024-09-25
Frequently asked questions
- What is Carolyn Duong's NPI number?
- Carolyn Duong's National Provider Identifier (NPI) is 1073878096, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Carolyn Duong's specialty?
- Carolyn Duong is listed in the NPPES registry with a primary specialty of Optometrist (Eye and Vision Services Providers).
- Where is Carolyn Duong located?
- Carolyn Duong's practice location on file with NPPES is 101 the City Dr S, Orange, CA 92868-3201.
- What is Carolyn Duong's phone number?
- The practice phone number listed in the NPPES registry for Carolyn Duong is (949) 824-2020.
- Does Carolyn Duong accept Medicare?
- Carolyn Duong is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Carolyn Duong's NPI active?
- Yes — Carolyn Duong's NPI (1073878096) is active in the NPPES registry as of the last update on 2024-10-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.