Quick answers
- Does Maryellen T. O'Hara accept Medicare assignment?
- Yes. Medicare's clinician data says Maryellen T. O'Hara 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 Maryellen T. O'Hara see?
- In 2024, CMS data shows 76 Original Medicare patients and 6,212 services for Maryellen T. O'Hara. This counts Original Medicare only and measures volume, not quality.
- What is Maryellen T. O'Hara's NPI number?
- 1366693707. 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 Maryellen T. O'Hara, 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 | 76 |
|---|---|
| Services billed to Medicare | 6,212 |
| Different services or procedures | 19 |
| Participating Medicare provider | Yes |
| Average age of these patients | 76 |
Most frequent services
- Injection, denosumab, 1 mg (J0897)2,760 services
- Administration of non-hormonal anti-neoplastic chemotherapy under skin or into muscle (96401)57 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)33 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)27 services
- Infusion into a vein for therapy, prevention, or diagnosis, 1 hour or less (96365)14 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%
- Arthritis75%
- Osteoporosis75%
- High blood pressure59%
- Ischemic heart disease29%
- Depression21%
Hospitals where Maryellen T. O'Hara works
Medicare's Facility Affiliation Data lists Maryellen T. O'Hara 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.
- Bryn Mawr HospitalBryn Mawr, PA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 390139
- Chester County HospitalWest Chester, PA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 390179
- Hospital of University of PennsylvaniaPhiladelphia, PA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 390111
- Paoli HospitalPaoli, PA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 390153
Practice locations
Addresses where Maryellen T. O'Hara is enrolled with Medicare (CMS data updated October 2, 2026).
- 2004 Sproul Rd, Fl 1Broomall, PA 19008 (610) 353‑0800
- 4 Industrial BlvdPaoli, PA 19301
Group practices
Medicare enrollment lists Maryellen T. O'Hara as a member of this group (CMS data updated October 2, 2026).
- Premier Orthopaedic and Sports Medicine Associates, Ltd216 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Broomall
Clinicians with the same Medicare primary specialty in Broomall, PA — not a recommendation.
Other clinicians in Premier Orthopaedic and Sports Medicine Associates, Ltd
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | OT |
|---|---|
| Graduation year | 2000 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1366693707 |
| 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