Quick answers
- Does Layne R. Christensen accept Medicare assignment?
- Yes. Medicare's clinician data says Layne R. Christensen accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Layne R. Christensen see?
- In 2024, CMS data shows 802 Original Medicare patients and 1,474 services for Layne R. Christensen. This counts Original Medicare only and measures volume, not quality.
- What is Layne R. Christensen's NPI number?
- 1730125477. 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 Layne R. Christensen, 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 | 802 |
|---|---|
| Services billed to Medicare | 1,474 |
| Different services or procedures | 30 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Established patient complete exam of visual system (92014)525 services
- Photography of the retina (92250)172 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)145 services
- New patient complete exam of visual system (92004)133 services
- Imaging of optic nerve (92133)118 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 pressure53%
- Arthritis42%
- Anxiety19%
- Ischemic heart disease18%
- Osteoporosis18%
Practice locations
Addresses where Layne R. Christensen is enrolled with Medicare (CMS data updated October 2, 2026).
- 2116 Nevada City HwyGrass Valley, CA 95945 (530) 273‑4451
Group practices
Medicare enrollment lists Layne R. Christensen as a member of this group (CMS data updated October 2, 2026).
- Layne R Christensen Optometric Corporation2 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 Layne R Christensen Optometric Corporation
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | OD |
|---|---|
| Optometry school | University Of California - School Of Optometry |
| Graduation year | 1984 (42 years since optometry school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1730125477 |
| 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