Lewis Kemmerer, OD
NPI 1942242912 · Optometrist · Redlands, CA
Enrolled with Medicare as Practitioner - Optometry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Lewis Kemmerer, OD is a Optometrist provider in Redlands, CA (NPI 1942242912).
Provider details
- NPI number
- 1942242912
- Entity type
- Individual
- Primary specialty
- OptometristEye and Vision Services Providers
- Credential
- OD
- Sex
- Male
- Sole proprietor
- No
- License
- OPT 8757 (CA)
Specialties & taxonomies
Eye and Vision Services Providers
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
505 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) |
|---|---|---|
| Established Patient Problem Focused Exam of Visual System92012 | 127 | $93 |
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More99212 | 92 | $58 |
| Exam of Visual Field With Extended Testing92083 | 61 | $66 |
| Imaging of Optic Nerve92133 | 57 | $35 |
| Established Patient Complete Exam of Visual System92014 | 49 | $131 |
| New Patient Problem Focused Exam of Visual System92002 | 29 | $88 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 11 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Latanoprost | 1,054 | 215 |
| Timolol Maleate | 200 | 55 |
| Cyclosporinebrand: Restasis | 29 | 13 |
| Levobunolol Hcl | 26 | — |
| Dorzolamide Hcl/Timolol Maleatbrand: Dorzolamide-Timolol | 26 | — |
| Dorzolamide Hcl | 24 | — |
| Travoprost | 17 | — |
| Tobramycin/Dexamethasone |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-06-12
- Last updated
- 2009-08-24
Frequently asked questions
- What is Lewis Kemmerer's NPI number?
- Lewis Kemmerer's National Provider Identifier (NPI) is 1942242912, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Lewis Kemmerer's specialty?
- Lewis Kemmerer is listed in the NPPES registry with a primary specialty of Optometrist (Eye and Vision Services Providers).
- Where is Lewis Kemmerer located?
- Lewis Kemmerer's practice location on file with NPPES is 1690 Barton Rd, Redlands, CA 92373-4229.
- What is Lewis Kemmerer's phone number?
- The practice phone number listed in the NPPES registry for Lewis Kemmerer is (909) 793-3311.
- Does Lewis Kemmerer accept Medicare?
- Lewis Kemmerer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Lewis Kemmerer's NPI active?
- Yes — Lewis Kemmerer's NPI (1942242912) is active in the NPPES registry as of the last update on 2009-08-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.