Quick answers
- Does Chelsea R. O'Neill accept Medicare assignment?
- Yes. Medicare's clinician data says Chelsea R. O'Neill 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 Chelsea R. O'Neill see?
- In 2024, CMS data shows 52 Original Medicare patients and 324 services for Chelsea R. O'Neill. This counts Original Medicare only and measures volume, not quality.
- What is Chelsea R. O'Neill's NPI number?
- 1366078230. 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 Chelsea R. O'Neill, 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 | 52 |
|---|---|
| Services billed to Medicare | 324 |
| Different services or procedures | 9 |
| Participating Medicare provider | Yes |
| Average age of these patients | 57 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)166 services
- Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)123 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 cholesterol69%
- High blood pressure67%
- Arthritis50%
- Anxiety44%
- COPD31%
- Depression25%
Practice locations
Addresses where Chelsea R. O'Neill is enrolled with Medicare (CMS data updated October 2, 2026).
- 1223 S Washington AveRoyal Oak, MI 48067 (248) 439‑1060
Group practices
Medicare enrollment lists Chelsea R. O'Neill as a member of this group (CMS data updated October 2, 2026).
- Michigan Healthcare Professionals PC529 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Royal Oak
Clinicians with the same Medicare primary specialty in Royal Oak, MI — not a recommendation.
Other clinicians in Michigan Healthcare Professionals PC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Graduation year | 2019 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1366078230 |
| 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