John Hahn, M.D.
NPI 1548260961 · Ophthalmology Physician · Sterling, IL
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Hahn, M.D. is a Ophthalmology Physician provider in Sterling, IL (NPI 1548260961).
Provider details
- NPI number
- 1548260961
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 036-124630 (IL)
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
4,146 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 Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 1,209 | $64 |
| Removal of Cataract With Insertion of Prosthetic Lens66984 | 852 | $183 |
| Measurement of Corneal Curvature and Depth of Eye92136 | 463 | $28 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 405 | $94 |
| Imaging of Optic Nerve92133 | 255 | $20 |
| Imaging of Retina92134 | 198 | $23 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 20 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Latanoprost | 634 | 184 |
| Timolol Maleate | 155 | 49 |
| Brimonidine Tartrate | 134 | 37 |
| Dorzolamide Hcl/Timolol Maleatbrand: Dorzolamide-Timolol | 127 | 39 |
| Bimatoprostbrand: Lumigan | 74 | 16 |
| Prednisolone Acetate | 71 | 56 |
| Neomycin/Polymyxin B/Dexamethabrand: Neomycin-Polymyxin-Dexameth | 57 | 38 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$33 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
- 2005-07-28
- Last updated
- 2012-08-09
Frequently asked questions
- What is John Hahn's NPI number?
- John Hahn's National Provider Identifier (NPI) is 1548260961, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Hahn's specialty?
- John Hahn is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is John Hahn located?
- John Hahn's practice location on file with NPPES is 10 W 3rd St, Sterling, IL 61081-3503.
- What is John Hahn's phone number?
- The practice phone number listed in the NPPES registry for John Hahn is (815) 625-4790.
- Does John Hahn accept Medicare?
- John Hahn is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Hahn's NPI active?
- Yes — John Hahn's NPI (1548260961) is active in the NPPES registry as of the last update on 2012-08-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.