Katherine Duncan, M.D.
NPI 1407113566 · Ophthalmology Physician · Towson, MD
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Katherine Duncan, M.D. is a Ophthalmology Physician provider in Towson, MD (NPI 1407113566).
Provider details
- NPI number
- 1407113566
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
14 yrs in NPPES registry
- Profile completeness25% of score
83% of core fields populated
- Practice footprint15% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
2,365 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 | 764 | $130 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 325 | $94 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 255 | $133 |
| Imaging of Optic Nerve92133 | 209 | $38 |
| Removal of Cataract With Insertion of Prosthetic Lens66984 | 178 | $559 |
| Ultrasound Scan to Determine Eye Length and Lens Power76519 | 138 |
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 | 295 | 81 |
| Erythromycin Basebrand: Erythromycin | 75 | 59 |
| Dorzolamide Hcl/Timolol Maleatbrand: Dorzolamide-Timolol | 67 | 19 |
| Neomycin/Polymyxin B/Dexamethabrand: Neomycin-Polymyxin-Dexameth | 56 | 46 |
| Timolol Maleate | 52 | 18 |
| Tobramycin/Dexamethasonebrand: Tobramycin-Dexamethasone | 38 | 27 |
| Prednisolone Acetate |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$380 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
Additional practice locations (2)
- 6569 N Charles St Ste 505Baltimore, MD 21204-5809Phone: (443) 849-3167
- 203 Lothrop St7th Floor, EeinsPittsburgh, PA 15213-2548Phone: (412) 647-2214Fax: (412) 647-0977
Registry dates
- Enumerated
- 2012-04-13
- Last updated
- 2022-07-21
Frequently asked questions
- What is Katherine Duncan's NPI number?
- Katherine Duncan's National Provider Identifier (NPI) is 1407113566, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Katherine Duncan's specialty?
- Katherine Duncan is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is Katherine Duncan located?
- Katherine Duncan's practice location on file with NPPES is 8625 Pleasant Plains Rd, Towson, MD 21286-2321.
- What is Katherine Duncan's phone number?
- The practice phone number listed in the NPPES registry for Katherine Duncan is (410) 828-5558.
- Does Katherine Duncan accept Medicare?
- Katherine Duncan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Katherine Duncan's NPI active?
- Yes — Katherine Duncan's NPI (1407113566) is active in the NPPES registry as of the last update on 2022-07-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.