MRS. REGINE B STILLWELL AGNP-C
NPI 1609724236
Nurse Practitioner - Adult Health in Los Angeles, CA
About Mrs. Regine B Stillwell Agnp-c NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MRS. REGINE B STILLWELL AGNP-C (NPI 1609724236) is an individual adult health provider in Los Angeles, California, licensed in California (AG01260061) and active in the NPI registry since March 2026. She is enrolled in Medicare PECOS and is a graduate of Other (2024).
NPPES Registry Identity
Specialties & Licenses
Group Practice 1
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Mrs. Regine B Stillwell Agnp-c is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignment
Medicare enrollment records show Regine Stillwell reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Tustin, CA 92780
- Reassigned Medicare billing, California enrollment
- 33 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 91402 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Regine Stillwell's NPI number?
The NPI number for Regine Stillwell is 1609724236. It was assigned to this individual provider in the NPPES registry on March 19, 2026.
Where is Regine Stillwell located?
Regine Stillwell practices at 14204 Sunburst Street, Los Angeles, CA 91402. The listed phone number is (504) 220-6617.
What is Regine Stillwell's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Adult Health, with taxonomy code 363LA2200X.
Is Regine Stillwell enrolled in Medicare?
Yes. Regine Stillwell is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organization bills Medicare for Regine Stillwell's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Regine Stillwell reassigns Medicare benefits to Dazzle Health P C (Tustin, CA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Regine Stillwell's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Regine Stillwell was last updated on March 19, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Mrs. Regine B Stillwell, AGNP-C · NPI 1609724236
Adult Health physician in Los Angeles, California. Individual provider, active in the CMS NPPES registry since March 19, 2026.
## Identity
- **NPI:** 1609724236 (Entity type: Individual)
- **Enumerated:** March 19, 2026
- **Primary specialty:** Nurse Practitioner - Adult Health · taxonomy 363LA2200X
- **State license:** AG01260061 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 14204 SUNBURST STREET, Los Angeles, CA 91402
- **Phone:** (504) 220-6617
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Dazzle Health P C (NPI 1578301495, Tustin, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2024
## Record status
- **NPPES last updated:** March 19, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1609724236) · Data from the CMS NPPES public registry.