John Geanon, MD
NPI 1891736971 · Ophthalmology Physician · Madison, WI
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Geanon, MD is a Ophthalmology Physician provider in Madison, WI (NPI 1891736971).
Provider details
- NPI number
- 1891736971
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 34330-020 (WI)
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
20 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
7,247 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) |
|---|---|---|
| Removal of Cataract With Insertion of Prosthetic Lens66984 | 2,877 | $1 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 1,067 | $120 |
| Exam of Visual Field With Extended Testing92083 | 976 | $60 |
| Imaging of Optic Nerve92133 | 816 | $32 |
| Established Patient Complete Exam of Visual System92014 | 457 | $119 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 275 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 32 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Latanoprost | 2,240 | 572 |
| Dorzolamide Hcl/Timolol Maleatbrand: Dorzolamide-Timolol | 1,127 | 308 |
| Timolol Maleate | 773 | 211 |
| Travoprost | 640 | 152 |
| Brimonidine Tartrate | 523 | 152 |
| Dorzolamide Hcl | 371 | 93 |
| Netarsudil Mesylatebrand: Rhopressa | 362 | 79 |
| Bimatoprost |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-06-09
- Last updated
- 2020-11-17
- Certified
- 2020-11-17
Frequently asked questions
- What is John Geanon's NPI number?
- John Geanon's National Provider Identifier (NPI) is 1891736971, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Geanon's specialty?
- John Geanon is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is John Geanon located?
- John Geanon's practice location on file with NPPES is 1025 Regent St, Madison, WI 53715-1248.
- What is John Geanon's phone number?
- The practice phone number listed in the NPPES registry for John Geanon is (608) 282-2000.
- Does John Geanon accept Medicare?
- John Geanon is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Geanon's NPI active?
- Yes — John Geanon's NPI (1891736971) is active in the NPPES registry as of the last update on 2020-11-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.