Quick answers
- Does Crystal M. Carrington-Hellier accept Medicare assignment?
- Yes. Medicare's clinician data says Crystal M. Carrington-Hellier 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 Crystal M. Carrington-Hellier see?
- In 2024, CMS data shows 127 Original Medicare patients and 204 services for Crystal M. Carrington-Hellier. This counts Original Medicare only and measures volume, not quality.
- What is Crystal M. Carrington-Hellier's NPI number?
- 1689666968. 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 Crystal M. Carrington-Hellier, 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 | 127 |
|---|---|
| Services billed to Medicare | 204 |
| Different services or procedures | 15 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Established patient complete exam of visual system (92014)65 services
- Imaging of retina (92134)38 services
- New patient complete exam of visual system (92004)30 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)20 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 cholesterol68%
- High blood pressure61%
- Arthritis43%
- Diabetes24%
- Depression22%
- Ischemic heart disease20%
Practice locations
Addresses where Crystal M. Carrington-Hellier is enrolled with Medicare (CMS data updated October 2, 2026).
- 1540 Lake Elmo Dr, Suite 1Billings, MT 59105 (406) 245‑2299
Group practices
Medicare enrollment lists Crystal M. Carrington-Hellier as a member of this group (CMS data updated October 2, 2026).
- Billings Family Optical PLLC4 clinicians in the group
Specialties
- Optometryprimary
Other optometrists in Billings
Clinicians with the same Medicare primary specialty in Billings, MT — not a recommendation.
Clinician information
| Credential | OD |
|---|---|
| Optometry school | Ferris State College - College Of Optometry |
| Graduation year | 2003 (23 years since optometry school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1689666968 |
| 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