MS. EMMA CAROLINE DUNCAN APN
NPI 1902268394
Nurse Practitioner - Acute Care in Oxnard, CA
About Ms. Emma Caroline Duncan Apn NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MS. EMMA CAROLINE DUNCAN APN (NPI 1902268394) is an individual acute care provider in Oxnard, California, licensed in Illinois (209.013732) and active in the NPI registry since March 2016. She is enrolled in Medicare PECOS, maintains 3 additional practice locations, and is a graduate of Other (2015).
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Locations 3
Other Identifiers 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
Ms. Emma Caroline Duncan Apn 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 Reassignments
5Medicare enrollment records show Emma Duncan reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Oxnard, CA 93036
- Reassigned Medicare billing, California enrollment
- 31 clinicians in this Medicare group
Simi Valley, CA 93065
- Reassigned Medicare billing, California enrollment
- 117 clinicians in this Medicare group
Los Angeles, CA 90020
- Reassigned Medicare billing, California enrollment
- 840 clinicians in this Medicare group
Los Angeles, CA 90033
- Reassigned Medicare billing, California enrollment
- 2,445 clinicians in this Medicare group
Los Angeles, CA 90059
- Reassigned Medicare billing, California enrollment
- 198 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 93030 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 3
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
OXNARD, CA 93030
OXNARD, CA 93030
OXNARD, CA 93030
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 Emma Duncan's NPI number?
The NPI number for Emma Duncan is 1902268394. It was assigned to this individual provider in the NPPES registry on March 24, 2016.
Where is Emma Duncan located?
Emma Duncan practices at St. John's Regional Medical Center - 1600 N Rose Avenue, Oxnard, CA 93030. The listed phone number is (000) 000-0000.
What is Emma Duncan's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Acute Care, with taxonomy code 363LA2100X.
Is Emma Duncan enrolled in Medicare?
Yes. Emma Duncan 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 organizations bill Medicare for Emma Duncan's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Emma Duncan reassigns Medicare benefits to 5 organizations: West Coast Critical Care Specialists, Inc. (Oxnard, CA), Cep America - Neurology PC (Simi Valley, CA), Pih Health Physicians (Los Angeles, CA), Usc Care Medical Group, Inc (Los Angeles, CA) and Superior Hospitalist Medical Group Inc (Los Angeles, CA). Each 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 Emma Duncan'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 Emma Duncan was last updated on March 20, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 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.
# Ms. Emma Caroline Duncan, APN · NPI 1902268394
Acute Care physician in Oxnard, California. Individual provider, active in the CMS NPPES registry since March 24, 2016.
## Identity
- **NPI:** 1902268394 (Entity type: Individual)
- **Enumerated:** March 24, 2016
- **Primary specialty:** Nurse Practitioner - Acute Care · taxonomy 363LA2100X
- **State license:** 209.013732 (Illinois)
- **Sole proprietor:** No
## Practice location
- **Address:** ST. JOHN'S REGIONAL MEDICAL CENTER - 1600 N ROSE AVENUE, Oxnard, CA 93030
- **Phone:** (000) 000-0000 · **Fax:** (805) 485-3025
## 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:** 5 organizations under Medicare reassignment (form CMS-855R): West Coast Critical Care Specialists, Inc. (NPI 1861707770, Oxnard, CA); Cep America - Neurology PC (NPI 1083483705, Simi Valley, CA); Pih Health Physicians (NPI 1518625367, Los Angeles, CA); Usc Care Medical Group, Inc (NPI 1902846306, Los Angeles, CA); Superior Hospitalist Medical Group Inc (NPI 1780047712, Los Angeles, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2015
## Record status
- **NPPES last updated:** March 20, 2025
- **Other identifiers:** Other 95011709 (CA)
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Source: [NPI Profile](https://npiprofile.com/npi/1902268394) · Data from the CMS NPPES public registry.