Quick answers
- Does Marsii S. Degrasse accept Medicare assignment?
- Medicare's clinician data says Marsii S. Degrasse may accept Medicare assignment (as of October 2, 2026). Ask the office whether they accept it for your visit.
- How many Medicare patients does Marsii S. Degrasse see?
- In 2024, CMS data shows 207 Original Medicare patients and 560 services for Marsii S. Degrasse. This counts Original Medicare only and measures volume, not quality.
- What is Marsii S. Degrasse's NPI number?
- 1851833214. 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 Marsii S. Degrasse, 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 | 207 |
|---|---|
| Services billed to Medicare | 560 |
| Different services or procedures | 15 |
| Participating Medicare provider | Yes |
| Average age of these patients | 72 |
Most frequent services
- Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes (99309)294 services
- Emergency department visit with high level of medical decision making (99285)86 services
- Subsequent nursing facility care with high level of medical decision making, per day, if using time, at least 45 minutes (99310)70 services
- Emergency department visit with moderate level of medical decision making (99284)51 services
- Initial nursing facility care with high level of medical decision making, per day, if using time, 50 minutes or more (99306)34 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%
- Arthritis58%
- Depression50%
- Anxiety49%
- Diabetes42%
Hospitals where Marsii S. Degrasse works
Medicare's Facility Affiliation Data lists Marsii S. Degrasse 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.
- Henry Mayo Newhall HospitalValencia, CA · Acute Care Hospital · Medicare rating: 2 of 5 stars · Emergency services: not listed by Medicare · CCN 050624
Practice locations
Addresses where Marsii S. Degrasse is enrolled with Medicare (CMS data updated October 2, 2026).
- 23823 Valencia Blvd, Suite 230Valencia, CA 91355 (661) 254‑0172
- 23845 McBean PkwyValencia, CA 91355 (661) 200‑2000
Group practices
Medicare enrollment lists Marsii S. Degrasse as a member of these groups (CMS data updated October 2, 2026).
- Cep America - California1,292 clinicians in the group
- Joseph Terrazzino M D Inc3 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Valencia
Clinicians with the same Medicare primary specialty in Valencia, CA — not a recommendation.
Other clinicians in Cep America - California
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Graduation year | 2016 |
| Gender (as listed) | Female |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1851833214 |
| 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