Quick answers
- Does Sarah Rosenfield accept Medicare assignment?
- Yes. Medicare's clinician data says Sarah Rosenfield 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 Sarah Rosenfield see?
- In 2024, CMS data shows 181 Original Medicare patients and 30,234 services for Sarah Rosenfield. This counts Original Medicare only and measures volume, not quality.
- What is Sarah Rosenfield's NPI number?
- 1457128506. 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 Sarah Rosenfield, 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 | 181 |
|---|---|
| Services billed to Medicare | 30,234 |
| Different services or procedures | 54 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Injection, ferric carboxymaltose, 1 mg (J1439)21,132 services
- Injection, ferric derisomaltose, 10 mg (J1437)1,400 services
- Injection, dexamethasone sodium phosphate, 1 mg (J1100)282 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)119 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)108 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%
- Arthritis54%
- Cancer (breast, colorectal, lung, prostate, endometrial or leukemia/lymphoma)44%
- Ischemic heart disease38%
- Chronic kidney disease36%
Hospitals where Sarah Rosenfield works
Medicare's Facility Affiliation Data lists Sarah Rosenfield 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
- Main Line Hospital LankenauWynnewood, PA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 390195
- Paoli HospitalPaoli, PA · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 390153
- Riddle Memorial HospitalMedia, PA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 390222
Practice locations
Addresses where Sarah Rosenfield is enrolled with Medicare (CMS data updated October 2, 2026).
- 100 E Lancaster AveWynewood, PA 19096 (610) 645‑2494
- 201 Gibraltar Rd, Suite 120Horsham, PA 19044 (215) 706‑2034
Group practices
Medicare enrollment lists Sarah Rosenfield as a member of this group (CMS data updated October 2, 2026).
- Alliance Cancer Specialists P.C.43 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Wynewood
Clinicians with the same Medicare primary specialty in Wynewood, PA — not a recommendation.
Other clinicians in Alliance Cancer Specialists P.C.
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| School | Drexel University College Of Medicine |
| Graduation year | 2023 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1457128506 |
| 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