Katy Liu, M.D., PH.D.
NPI 1801216221 · Ophthalmology Physician · Durham, NC
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Katy Liu, M.D., PH.D. is a Ophthalmology Physician provider in Durham, NC (NPI 1801216221).
Provider details
- NPI number
- 1801216221
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D., PH.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 2018-00356 (NC)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
12 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
396 Medicare services, 2024 (ranked within specialty)
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 methodology.
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 Problem Focused Exam of Visual System92012 | 148 | $79 |
| Imaging of Optic Nerve92133 | 72 | $32 |
| Exam of Visual Field With Extended Testing92083 | 56 | $55 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 34 | $15 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 28 | $80 |
| Established Patient Complete Exam of Visual System92014 | 25 |
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 | 244 | 76 |
| Dorzolamide Hcl/Timolol Maleatbrand: Dorzolamide-Timolol | 126 | 44 |
| Brimonidine Tartrate | 125 | 37 |
| Dorzolamide Hcl | 57 | 16 |
| Prednisolone Acetate | 51 | 37 |
| Timolol Maleate | 42 | 16 |
| Dorzolamide/Timolol/Pfbrand: Dorzolamide-Timolol | 30 | — |
Practice location
Mailing address
Registry dates
- Enumerated
- 2014-04-24
- Last updated
- 2023-09-19
- Certified
- 2023-09-19
Frequently asked questions
- What is Katy Liu's NPI number?
- Katy Liu's National Provider Identifier (NPI) is 1801216221, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Katy Liu's specialty?
- Katy Liu is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is Katy Liu located?
- Katy Liu's practice location on file with NPPES is 2301 Erwin Rd, Durham, NC 27705-4699.
- What is Katy Liu's phone number?
- The practice phone number listed in the NPPES registry for Katy Liu is (919) 684-8111.
- Does Katy Liu accept Medicare?
- Katy Liu is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Katy Liu's NPI active?
- Yes — Katy Liu's NPI (1801216221) is active in the NPPES registry as of the last update on 2023-09-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.