Katy Liu, M.D., PH.D.
Ophthalmology Physician · Durham, NC
Katy Liu, M.D., PH.D. is an ophthalmology physician with a practice address in Durham, North Carolina, and NPI 1801216221, issued on Apr 24, 2014. Check the license (North Carolina 2018-00356, as entered in NPPES) on the North Carolina Medical Board; the Medicare figures below come from public CMS files.
- Name
- Katy Liu
- Credential
- M.D., PH.D.
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License number
- 2018-00356 NC
Self-reported in NPPES; status is on the state search - Practice location
- 2301 Erwin RD, Durham, NC 27705
- Phone
- (919) 684-8111
- Enumerated
- Apr 24, 2014
- Record last updated
- Sep 19, 2023
- Medicare enrollment
- Enrolled (PECOS I20180925003621); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 688 in North Carolina → Look up another NPI →
Also registered at 2301 Erwin RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Katy Liu in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNorth Carolina Medical Board
Search for license 2018-00356Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
41% fewer Medicare Part D claims than the average ophthalmology physician in 2024
894 Medicare Part D claims for 149 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 25% of claims.
Most prescribed
- Latanoprost244 claims
- Dorzolamide-Timolol126 claims
- Brimonidine Tartrate125 claims
- Dorzolamide Hcl57 claims
- Prednisolone Acetate51 claims
- Timolol Maleate42 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Duke Health Integrated Practice IncDurham, NC
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Katy Liu among 688 ophthalmology physician records in North Carolina
Katy Liu, M.D., PH.D. is one of 688 ophthalmology physician records with a practice address in North Carolina. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2014, is newer than 80% of them.
- NPI issued2014 · 80% of these records are older, 18% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 67% of these records are
- Graduated2014 · median 2004 among the 463 with a school on file
- Record last updated2023 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207W00000X and a North Carolina practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Ophthalmology Physician providers in North Carolina
There are 688 ophthalmology physician records in North Carolina.
All 688 in North Carolina → Every provider in Durham → Ophthalmology Physician nationwide →
The 8 ophthalmology physician records with the nearest ZIP codes
- Pratap Challa, M.D.Durham, NC 277051982794137
- Melissa Daluvoy, M.D.Durham, NC 277051760657860
- Ambar Faridi, MDDurham, NC 277051831325976
- Karen Grove, M.D.Durham, NC 277051538327796
- Divakar Gupta, MDDurham, NC 277051225353626
- Jason Liss, M.D.Durham, NC 277051245352400
- Miguel Materin, M.D.Durham, NC 277051528292679
- Jay Meyer, M.D.Durham, NC 277051083868053
Common questions
What is Katy Liu, M.D., PH.D.'s NPI number?
Katy Liu, M.D., PH.D.'s National Provider Identifier (NPI) is 1801216221, issued on Apr 24, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Katy Liu, M.D., PH.D. located?
The NPPES record lists a practice address at 2301 Erwin RD, Durham, NC, 27705. Phone: (919) 684-8111. Providers update this record themselves, so call before visiting.
How can I verify Katy Liu, M.D., PH.D.'s license?
NPPES lists North Carolina license number 2018-00356, as entered by the provider. Search the North Carolina Medical Board at https://portal.ncmedboard.org/verification/search.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Katy Liu, M.D., PH.D. prescribe under Medicare Part D?
In 2024, Katy Liu, M.D., PH.D. had 894 Medicare Part D claims for 149 beneficiaries; the average among ophthalmology physician prescribers was 1,518. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.