Olivia Liao, MD
NPI 1174502454 · Ophthalmology Physician · Lexington, MA
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Olivia Liao, MD is a Ophthalmology Physician provider in Lexington, MA (NPI 1174502454).
Provider details
- NPI number
- 1174502454
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 75542 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
1,702 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 | 866 | $140 |
| Imaging of Optic Nerve92133 | 146 | $39 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 141 | $139 |
| Imaging of Retina92134 | 110 | $45 |
| Photography of the Retina92250 | 85 | $41 |
| Exam of Visual Field With Extended Testing92083 | 77 | $71 |
| Established Patient Problem Focused Exam of Visual System |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 14 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Latanoprost | 230 | 74 |
| Timolol Maleate | 86 | 33 |
| Prednisolone Acetate | 27 | 25 |
| Cyclosporinebrand: Restasis | 23 | 12 |
| Brimonidine Tartrate | 22 | — |
| Travoprost | 22 | — |
| Dorzolamide Hcl | 19 | — |
| Doxycycline Monohydrate | 16 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$127 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
- 2006-01-13
- Last updated
- 2008-06-23
Frequently asked questions
- What is Olivia Liao's NPI number?
- Olivia Liao's National Provider Identifier (NPI) is 1174502454, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Olivia Liao's specialty?
- Olivia Liao is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is Olivia Liao located?
- Olivia Liao's practice location on file with NPPES is 21 Worthen Rd, Lexington, MA 02421-4835.
- What is Olivia Liao's phone number?
- The practice phone number listed in the NPPES registry for Olivia Liao is (781) 862-1620.
- Does Olivia Liao accept Medicare?
- Olivia Liao is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Olivia Liao's NPI active?
- Yes — Olivia Liao's NPI (1174502454) is active in the NPPES registry as of the last update on 2008-06-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.