Quick answers
- Does Stephanie M. Koterwas accept Medicare assignment?
- Yes. Medicare's clinician data says Stephanie M. Koterwas 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 Stephanie M. Koterwas see?
- In 2024, CMS data shows 226 Original Medicare patients and 676 services for Stephanie M. Koterwas. This counts Original Medicare only and measures volume, not quality.
- What is Stephanie M. Koterwas's NPI number?
- 1730551086. 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 Stephanie M. Koterwas, 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 | 226 |
|---|---|
| Services billed to Medicare | 676 |
| Different services or procedures | 30 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)230 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)77 services
- Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (G0439)63 services
- Assessment of emotional or behavioral problems (96127)21 services
- Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use (90677)20 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 pressure71%
- Arthritis47%
- Depression27%
- Anxiety26%
- Diabetes24%
Hospitals where Stephanie M. Koterwas works
Medicare's Facility Affiliation Data lists Stephanie M. Koterwas 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.
- Christiana HospitalNewark, DE · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 080001
Practice locations
Addresses where Stephanie M. Koterwas is enrolled with Medicare (CMS data updated October 2, 2026).
- 300 Biddle Ave, Bldg Suite200Newark, DE 19702 (302) 838‑4750
Group practices
Medicare enrollment lists Stephanie M. Koterwas as a member of this group (CMS data updated October 2, 2026).
- Christiana Care Health Services Inc1,483 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Newark
Clinicians with the same Medicare primary specialty in Newark, DE — not a recommendation.
Other clinicians in Christiana Care Health Services Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Graduation year | 2015 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1730551086 |
| 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