Quick answers
- Does Patricia A. Duffield accept Medicare assignment?
- Yes. Medicare's clinician data says Patricia A. Duffield 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 Patricia A. Duffield see?
- In 2024, CMS data shows 157 Original Medicare patients and 934 services for Patricia A. Duffield. This counts Original Medicare only and measures volume, not quality.
- What is Patricia A. Duffield's NPI number?
- 1134104755. 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 Patricia A. Duffield, 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 | 157 |
|---|---|
| Services billed to Medicare | 934 |
| Different services or procedures | 14 |
| Participating Medicare provider | Yes |
| Average age of these patients | 85 |
Most frequent services
- Residence visit for established patient with moderate level of medical decision making, per day, if using time, at least 40 minutes (99349)335 services
- Residence visit for established patient with low level of medical decision making, per day, if using time, at least 30 minutes (99348)190 services
- Subsequent nursing facility care with high level of medical decision making, per day, if using time, at least 45 minutes (99310)130 services
- Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes (99309)126 services
- Residence visit for established patient with high level of medical decision making, per day, if using time, at least 60 minutes (99350)87 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 cholesterol71%
- Arthritis61%
- Heart failure45%
- Anxiety42%
- Depression41%
Hospitals where Patricia A. Duffield works
Medicare's Facility Affiliation Data lists Patricia A. Duffield at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- OSF Little Company of Mary Medical CenterEvergreen Park, IL · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: listed by Medicare · CCN 140179
- OSF Saint Elizabeth MDL CenterPeru, IL · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 140110
- Saint James HospitalPontiac, IL · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: not listed by Medicare · CCN 140161
Practice locations
Addresses where Patricia A. Duffield is enrolled with Medicare (CMS data updated October 2, 2026).
- 1 S450 Summit Ave, Suite 165Oakbrook Terrace, IL 60181 (630) 320‑6871
Group practices
Medicare enrollment lists Patricia A. Duffield as a member of this group (CMS data updated October 2, 2026).
- Community Home Physicians LLC82 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Oakbrook Terrace
Clinicians with the same Medicare primary specialty in Oakbrook Terrace, IL — not a recommendation.
Other clinicians in Community Home Physicians LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Graduation year | 1987 |
|---|---|
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1134104755 |
| 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- 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