Quick answers
- Does Shannon M. O'Brien accept Medicare assignment?
- Yes. Medicare's clinician data says Shannon M. O'Brien 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 Shannon M. O'Brien see?
- In 2024, CMS data shows 118 Original Medicare patients and 271 services for Shannon M. O'Brien. This counts Original Medicare only and measures volume, not quality.
- What is Shannon M. O'Brien's NPI number?
- 1154567675. 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 Shannon M. O'Brien, 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 | 118 |
|---|---|
| Services billed to Medicare | 271 |
| Different services or procedures | 9 |
| Participating Medicare provider | Yes |
| Average age of these patients | 72 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)106 services
- Continuous monitoring of blood sugar level in tissue fluid using sensor under skin with interpretation and report (95251)51 services
- New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)51 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)38 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 cholesterol75%
- Diabetes75%
- Ischemic heart disease47%
- Chronic kidney disease47%
- Arthritis43%
Hospitals where Shannon M. O'Brien works
Medicare's Facility Affiliation Data lists Shannon M. O'Brien 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.
- Inspira Medical Center Mullica HillElmer, NJ · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 310069
- West Jersey HospitalVoorhees, NJ · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 310022
Practice locations
Addresses where Shannon M. O'Brien is enrolled with Medicare (CMS data updated October 2, 2026).
- 132 Grove St, Suite AHaddonfield, NJ 08033 (856) 354‑2211
- 900 Route 168, Suite I1Turnersville, NJ 08012 (856) 872‑7055
- Washington Profess Campus 900 Rt, 168 Advocare Delgiorno EndocrinologyTurnersville, NJ 08012 (856) 728‑3636
Group practices
Medicare enrollment lists Shannon M. O'Brien as a member of this group (CMS data updated October 2, 2026).
- Advocare, LLC386 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Haddonfield
Clinicians with the same Medicare primary specialty in Haddonfield, NJ — not a recommendation.
Other clinicians in Advocare, LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Graduation year | 2008 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1154567675 |
| 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