Quick answers
- Does Marianne Johnstone-Petty accept Medicare assignment?
- Yes. Medicare's clinician data says Marianne Johnstone-Petty 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 Marianne Johnstone-Petty see?
- In 2024, CMS data shows 169 Original Medicare patients and 537 services for Marianne Johnstone-Petty. This counts Original Medicare only and measures volume, not quality.
- What is Marianne Johnstone-Petty's NPI number?
- 1871896894. 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 Marianne Johnstone-Petty, 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 | 169 |
|---|---|
| Services billed to Medicare | 537 |
| Different services or procedures | 28 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)176 services
- Advance care planning, first 30 minutes (99497)67 services
- New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)60 services
- Prolonged office or other outpatient evaluation and management service(s) beyond the maximum required time of the primary procedure which has been selected using total time on the date of the primary service; each additional 15 minutes by the physician or (G2212)44 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)39 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 blood pressure75%
- High cholesterol60%
- Arthritis50%
- Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)48%
- Anxiety37%
- Ischemic heart disease34%
Practice locations
Addresses where Marianne Johnstone-Petty is enrolled with Medicare (CMS data updated October 2, 2026).
- 1200 Hilyard StEugene, OR 97401 (458) 205‑6011
Group practices
Medicare enrollment lists Marianne Johnstone-Petty as a member of this group (CMS data updated October 2, 2026).
- PeaceHealth Medical Group255 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Eugene
Clinicians with the same Medicare primary specialty in Eugene, OR — not a recommendation.
Other clinicians in PeaceHealth Medical Group
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| School | University Of Alabama School Of Medicine |
| Graduation year | 2017 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1871896894 |
| 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