Charles Keller, M.D.
NPI 1558324392 · Specialist · Orange, CA
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Charles Keller, M.D. is a Specialist provider in Orange, CA (NPI 1558324392).
Provider details
- NPI number
- 1558324392
- Entity type
- Individual
- Primary specialty
- SpecialistOther Service Providers
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
Specialties & taxonomies
Other Service Providers
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
83% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
1,558 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 | 439 | $139 |
| Imaging of Retina92134 | 317 | $44 |
| Imaging of Optic Nerve92133 | 178 | $38 |
| Exam of Visual Field With Extended Testing92083 | 149 | $71 |
| Removal of Cataract With Insertion of Prosthetic Lens66984 | 92 | $566 |
| New Patient Complete Exam of Visual System92004 | 82 | $164 |
| Established Patient Problem Focused Exam of Visual System |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 15 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Latanoprost | 324 | 95 |
| Prednisolone Acetate | 197 | 121 |
| Polymyxin B Sulf/Trimethoprimbrand: Polymyxin B Sul-Trimethoprim | 109 | 100 |
| Dorzolamide Hcl/Timolol Maleatbrand: Dorzolamide-Timolol | 98 | 32 |
| Bromfenac Sodiumbrand: Prolensa | 53 | 37 |
| Brimonidine Tartrate/Timololbrand: Brimonidine Tartrate-Timolol | 29 | — |
| Fluorometholone Acetate |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$103 across 4 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
- 2006-04-11
- Last updated
- 2010-07-01
Frequently asked questions
- What is Charles Keller's NPI number?
- Charles Keller's National Provider Identifier (NPI) is 1558324392, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Charles Keller's specialty?
- Charles Keller is listed in the NPPES registry with a primary specialty of Specialist (Other Service Providers).
- Where is Charles Keller located?
- Charles Keller's practice location on file with NPPES is 1010 W. Laveta Avenue, Orange, CA 92868-4304.
- What is Charles Keller's phone number?
- The practice phone number listed in the NPPES registry for Charles Keller is (714) 633-5696.
- Does Charles Keller accept Medicare?
- Charles Keller is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Charles Keller's NPI active?
- Yes — Charles Keller's NPI (1558324392) is active in the NPPES registry as of the last update on 2010-07-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.