Quick answers
- Does Diana L. McKnight accept Medicare assignment?
- Medicare's clinician data says Diana L. McKnight may accept Medicare assignment (as of October 2, 2026). Ask the office whether they accept it for your visit.
- How many Medicare patients does Diana L. McKnight see?
- In 2024, CMS data shows 81 Original Medicare patients and 145 services for Diana L. McKnight. This counts Original Medicare only and measures volume, not quality.
- What is Diana L. McKnight's NPI number?
- 1457310500. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Diana L. McKnight, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 81 |
|---|---|
| Services billed to Medicare | 145 |
| Different services or procedures | 11 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Photography of the retina (92250)55 services
- New patient complete exam of visual system (92004)35 services
- Established patient complete exam of visual system (92014)27 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High cholesterol74%
- High blood pressure65%
- Arthritis42%
- Depression22%
- Chronic kidney disease19%
- Ischemic heart disease17%
Practice locations
Addresses where Diana L. McKnight is enrolled with Medicare (CMS data updated October 2, 2026).
- 154 Hughes Rd, Suite 3Grass Valley, CA 95945 (530) 272‑2238
- 8419 Elk Grove Florin RdElk Grove, CA 95624 (916) 681‑1101
Group practices
Medicare enrollment lists Diana L. McKnight as a member of this group (CMS data updated October 2, 2026).
- Crystal View Optometry Inc3 clinicians in the group
Specialties
- Optometryprimary
Other optometrists in Grass Valley
Clinicians with the same Medicare primary specialty in Grass Valley, CA — not a recommendation.
Other clinicians in Crystal View Optometry Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | OD |
|---|---|
| Optometry school | Southern California College Of Optometry |
| Graduation year | 1997 (29 years since optometry school) |
| Gender (as listed) | Female |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1457310500 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians