Gerard Ardron, M.D.
NPI 1689709982 · Ophthalmology Physician · Sonora, CA
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gerard Ardron, M.D. is a Ophthalmology Physician provider in Sonora, CA (NPI 1689709982).
Provider details
- NPI number
- 1689709982
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- G66625 (CA)
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
19 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
7,646 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 | 2,102 | $130 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 1,316 | $92 |
| Imaging of Retina92134 | 967 | $41 |
| Measurement of Corneal Curvature and Depth of Eye92136 | 742 | $26 |
| Injection of Drug Into Eye67028 | 662 | $127 |
| Removal of Cataract With Insertion of Prosthetic Lens66984 | 480 | $531 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 21 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Latanoprost | 936 | 250 |
| Ketorolac Tromethamine | 379 | 253 |
| Moxifloxacin Hclbrand: Moxifloxacin | 352 | 251 |
| Neomycin/Polymyxin B/Dexamethabrand: Neomycin-Polymyxin-Dexameth | 211 | 145 |
| Prednisolone Acetate | 170 | 85 |
| Timolol Maleate | 139 | 51 |
| Dorzolamide Hcl/Timolol Maleatbrand: Dorzolamide-Timolol | 130 | 48 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$62 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
Registry dates
- Enumerated
- 2007-02-23
- Last updated
- 2015-04-23
Frequently asked questions
- What is Gerard Ardron's NPI number?
- Gerard Ardron's National Provider Identifier (NPI) is 1689709982, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gerard Ardron's specialty?
- Gerard Ardron is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is Gerard Ardron located?
- Gerard Ardron's practice location on file with NPPES is 940 Sylva Ln Ste G, Sonora, CA 95370-5969.
- What is Gerard Ardron's phone number?
- The practice phone number listed in the NPPES registry for Gerard Ardron is (209) 532-2020.
- Does Gerard Ardron accept Medicare?
- Gerard Ardron is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gerard Ardron's NPI active?
- Yes — Gerard Ardron's NPI (1689709982) is active in the NPPES registry as of the last update on 2015-04-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.