Marinelle Sebastian, FNP
NPI 1568134831 · Primary Care Nurse Practitioner · Thousand Oaks, CA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marinelle Sebastian, FNP is a Primary Care Nurse Practitioner provider in Thousand Oaks, CA (NPI 1568134831).
Provider details
- NPI number
- 1568134831
- Entity type
- Individual
- Primary specialty
- Primary Care Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- FNP
- Sex
- Female
- Sole proprietor
- No
- License
- 95017892 (CA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
4 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
12 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 12 | $117 |
Typical Medicare-allowed amounts for these services range $117–$117 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 7 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Sodium, Potassium,mag Sulfatesbrand: Sod Sulf-Potass Sulf-Mag Sulf | 57 | 57 |
| Pantoprazole Sodium | 38 | 29 |
| Omeprazole | 32 | 25 |
| Famotidine | 17 | 15 |
| Cholestyramine (with Sugar)brand: Cholestyramine | 14 | — |
| Linaclotidebrand: Linzess | 14 | — |
| Dicyclomine Hcl | 11 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2021-10-04
- Last updated
- 2024-08-27
- Certified
- 2024-08-27
Frequently asked questions
- What is Marinelle Sebastian's NPI number?
- Marinelle Sebastian's National Provider Identifier (NPI) is 1568134831, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marinelle Sebastian's specialty?
- Marinelle Sebastian is listed in the NPPES registry with a primary specialty of Primary Care Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Marinelle Sebastian located?
- Marinelle Sebastian's practice location on file with NPPES is 248 Hampshire Rd Ste 200, Thousand Oaks, CA 91361-2401.
- What is Marinelle Sebastian's phone number?
- The practice phone number listed in the NPPES registry for Marinelle Sebastian is (805) 370-0040.
- Does Marinelle Sebastian accept Medicare?
- Marinelle Sebastian is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marinelle Sebastian's NPI active?
- Yes — Marinelle Sebastian's NPI (1568134831) is active in the NPPES registry as of the last update on 2024-08-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.