DR. AARON NAGIEL M.D., PH.D.
NPI 1669771879
Ophthalmology in Ventura, CA
About Dr. Aaron Nagiel M.d., Ph.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. AARON NAGIEL M.D., PH.D. (NPI 1669771879) is an individual ophthalmology provider in Ventura, California, licensed in California (A125048) and active in the NPI registry since March 2011. He is enrolled in Medicare PECOS, maintains a secondary practice location in Los Angeles, and is a graduate of Js Weill Medical College, Cornell University (2011).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 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
Dr. Aaron Nagiel M.d., Ph.d. 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
3Medicare enrollment records show Aaron Nagiel reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Ventura, CA 93003
- Reassigned Medicare billing, California enrollment
- 710 clinicians in this Medicare group
Beverly Hills, CA 90210
- Reassigned Medicare billing, California enrollment
- 4 clinicians in this Medicare group
Los Angeles, CA 90027
- Reassigned Medicare billing, California enrollment
- Medicare enrollment name: Childrens Hospital Los Angeles Medical Group Inc
- 1,281 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 93003 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 Aaron Nagiel's NPI number?
The NPI number for Aaron Nagiel is 1669771879. It was assigned to this individual provider in the NPPES registry on March 28, 2011.
Where is Aaron Nagiel located?
Aaron Nagiel practices at 300 Hillmont Ave., Building 340 Ste 302, Ventura, CA 93003. The listed phone number is (805) 652-6255.
What is Aaron Nagiel's specialty?
The primary specialty registered for this NPI is Ophthalmology with taxonomy code 207W00000X.
Is Aaron Nagiel enrolled in Medicare?
Yes. Aaron Nagiel 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 Aaron Nagiel's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Aaron Nagiel reassigns Medicare benefits to 3 organizations: County Of Ventura (Ventura, CA), Retina Vision Consultants 360 (Beverly Hills, CA) and Children's Hospital Los Angeles 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 Aaron Nagiel'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 Aaron Nagiel was last updated on October 15, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.
# Dr. Aaron Nagiel, M.D., PH.D. · NPI 1669771879
Ophthalmology physician in Ventura, California. Individual provider, active in the CMS NPPES registry since March 28, 2011.
## Identity
- **NPI:** 1669771879 (Entity type: Individual)
- **Enumerated:** March 28, 2011
- **Primary specialty:** Ophthalmology · taxonomy 207W00000X
- **State license:** A125048 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 300 HILLMONT AVE., BUILDING 340 STE 302, Ventura, CA 93003
- **Phone:** (805) 652-6255
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): County Of Ventura (NPI 1619118569, Ventura, CA); Retina Vision Consultants 360 (NPI 1124910856, Beverly Hills, CA); Children's Hospital Los Angeles Medical Group, Inc. (NPI 1265530653, Los Angeles, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Js Weill Medical College, Cornell University, class of 2011
## Record status
- **NPPES last updated:** October 15, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1669771879) · Data from the CMS NPPES public registry.