James Knupp, MD
NPI 1548211774 · Ophthalmology Physician · Toledo, OH
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
James Knupp, MD is a Ophthalmology Physician provider in Toledo, OH (NPI 1548211774).
Provider details
- NPI number
- 1548211774
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 35042466 (OH)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
844 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 | 156 | $120 |
| Imaging of Optic Nerve92133 | 136 | $33 |
| Exam of Visual Field With Extended Testing92083 | 130 | $60 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 121 | $88 |
| Established Patient Problem Focused Exam of Visual System92012 | 93 | $85 |
| Imaging of Retina92134 | 60 | $38 |
| Exam to Measure Eye Deviation and Range of Motion |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 13 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Latanoprost | 184 | 58 |
| Brimonidine Tartrate | 66 | 23 |
| Timolol Maleate | 61 | 19 |
| Dorzolamide Hcl/Timolol Maleatbrand: Dorzolamide-Timolol | 48 | 11 |
| Erythromycin Basebrand: Erythromycin | 48 | 32 |
| Prednisolone Acetate | 22 | 16 |
| Bimatoprostbrand: Lumigan | 21 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$73 across 3 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)
- 960 W Wooster St Ste 216Bowling Green, OH 43402-2650Phone: (419) 352-5500Fax: (419) 352-5577
Registry dates
- Enumerated
- 2006-05-12
- Last updated
- 2025-11-19
- Certified
- 2025-11-19
Frequently asked questions
- What is James Knupp's NPI number?
- James Knupp's National Provider Identifier (NPI) is 1548211774, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is James Knupp's specialty?
- James Knupp is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is James Knupp located?
- James Knupp's practice location on file with NPPES is 1000 Regency Ct Ste 100, Toledo, OH 43623-3074.
- What is James Knupp's phone number?
- The practice phone number listed in the NPPES registry for James Knupp is (419) 882-0588.
- Does James Knupp accept Medicare?
- James Knupp is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is James Knupp's NPI active?
- Yes — James Knupp's NPI (1548211774) is active in the NPPES registry as of the last update on 2025-11-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.