Quick answers
- Does Patricia P. O Neill accept Medicare assignment?
- Yes. Medicare's clinician data says Patricia P. 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 Patricia P. O Neill see?
- In 2024, CMS data shows 622 Original Medicare patients and 3,411 services for Patricia P. O Neill. This counts Original Medicare only and measures volume, not quality.
- What is Patricia P. O Neill's NPI number?
- 1215163407. 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 P. 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 | 622 |
|---|---|
| Services billed to Medicare | 3,411 |
| Different services or procedures | 49 |
| Participating Medicare provider | Yes |
| Average age of these patients | 76 |
Most frequent 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)524 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)522 services
- Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)457 services
- Annual depression screening, 5 to 15 minutes (G0444)445 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)182 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 cholesterol75%
- High blood pressure67%
- Arthritis51%
- Anxiety27%
- Osteoporosis22%
- Diabetes21%
Hospitals where Patricia P. O Neill works
Medicare's Facility Affiliation Data lists Patricia P. O Neill 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.
- Luminis Health Anne Arundel Medical Center, IncAnnapolis, MD · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 210023
- Northeastern Health System SequoyahSallisaw, OK · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 370112
- The Johns Hopkins HospitalBaltimore, MD · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 210009
Practice locations
Addresses where Patricia P. O Neill is enrolled with Medicare (CMS data updated October 2, 2026).
- 116 Defense Hwy, Suite 400Annapolis, MD 21401 (410) 897‑9841
Group practices
Medicare enrollment lists Patricia P. O Neill as a member of this group (CMS data updated October 2, 2026).
- Annapolis Internal Medicine, LLC22 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Annapolis
Clinicians with the same Medicare primary specialty in Annapolis, MD — not a recommendation.
Other clinicians in Annapolis Internal Medicine, LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | West Virginia University School Of Medicine |
| Graduation year | 2009 (17 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1215163407 |
| 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