ARIANA N DILLMAN M.D.
NPI 1497067862
Emergency Medicine in Oceanside, CA
About Ariana N Dillman M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ARIANA N DILLMAN M.D. (NPI 1497067862) is an individual emergency medicine provider in Oceanside, California, licensed in California (A118150) and active in the NPI registry since July 2010. She is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Ariana N Dillman M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
4Medicare enrollment records show Ariana Dillman reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Oceanside, CA 92056
- Reassigned Medicare billing, California enrollment
- 140 clinicians in this Medicare group
Vista, CA 92083
- Reassigned Medicare billing, California enrollment
- 577 clinicians in this Medicare group
San Marcos, CA 92078
- Reassigned Medicare billing, California enrollment
- Medicare enrollment name: Cep America - California
- 1,204 clinicians in this Medicare group
Chula Vista, CA 91910
- Reassigned Medicare billing, California enrollment
- 44 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.
Areas of Expertise CMS Part B claims 6
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 92056 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
OCEANSIDE, CA 92056
OCEANSIDE, CA 92056
OCEANSIDE, CA 92056
OCEANSIDE, CA 92056
OCEANSIDE, CA 92056
OCEANSIDE, CA 92056
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 Ariana Dillman's NPI number?
The NPI number for Ariana Dillman is 1497067862. It was assigned to this individual provider in the NPPES registry on July 13, 2010.
Where is Ariana Dillman located?
Ariana Dillman practices at 4002 Vista Way Emergency Department, Oceanside, CA 92056. The listed phone number is (760) 439-1963.
What is Ariana Dillman's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Ariana Dillman enrolled in Medicare?
Yes. Ariana Dillman is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Ariana Dillman's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ariana Dillman reassigns Medicare benefits to 4 organizations: Team Physicians Of Southern California Medical Group, Inc. (Oceanside, CA), Centro De Salud De La Comunidad De San Ysidro, Inc. (Vista, CA), California Emergency Physicians Medical Group (San Marcos, CA) and Chula Vista Emergency Room Physicians, A Medical Corporation (Chula Vista, 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 Ariana Dillman'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 Ariana Dillman was last updated on May 26, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 years 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.
# Ariana N Dillman, M.D. · NPI 1497067862
Emergency Medicine physician in Oceanside, California. Individual provider, active in the CMS NPPES registry since July 13, 2010.
## Identity
- **NPI:** 1497067862 (Entity type: Individual)
- **Enumerated:** July 13, 2010
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** A118150 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 4002 VISTA WAY, EMERGENCY DEPARTMENT, Oceanside, CA 92056-4506
- **Phone:** (760) 439-1963
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 4 organizations under Medicare reassignment (form CMS-855R): Team Physicians Of Southern California Medical Group, Inc. (NPI 1225499015, Oceanside, CA); Centro De Salud De La Comunidad De San Ysidro, Inc. (NPI 1124793732, Vista, CA); California Emergency Physicians Medical Group (NPI 1740473172, San Marcos, CA); Chula Vista Emergency Room Physicians, A Medical Corporation (NPI 1780021782, Chula Vista, CA) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** May 26, 2015
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Source: [NPI Profile](https://npiprofile.com/npi/1497067862) · Data from the CMS NPPES public registry.