DR. DAVID J AGUIAR MD
NPI 1679660229
Obstetrics & Gynecology in Naperville, IL
About Dr. David J Aguiar Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. DAVID J AGUIAR MD (NPI 1679660229) is an individual obstetrics & gynecology provider in Naperville, Illinois, licensed in Illinois (036090965) and active in the NPI registry since October 2006. He is enrolled in Medicare PECOS, is affiliated with Edward Hospital, and maintains a secondary practice location in St Charles.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Other Identifiers 1
Accepted Insurance
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. David J Aguiar Md 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 David Aguiar reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Naperville, IL 60540
- Reassigned Medicare billing, Illinois enrollment
- 561 clinicians in this Medicare group
Downers Grove, IL 60515
- Reassigned Medicare billing, Illinois enrollment
- 1,061 clinicians in this Medicare group
Evanston, IL 60201
- Reassigned Medicare billing, Illinois enrollment
- 4,841 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
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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Edward Hospital
Acute Care Hospitals · Naperville, ILPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 60540 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 8
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 David Aguiar's NPI number?
The NPI number for David Aguiar is 1679660229. It was assigned to this individual provider in the NPPES registry on October 6, 2006.
Where is David Aguiar located?
David Aguiar practices at 100 Spalding Dr Ste 406, Naperville, IL 60540. The listed phone number is (630) 961-9485.
What is David Aguiar's specialty?
The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.
Is David Aguiar enrolled in Medicare?
Yes. David Aguiar 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 David Aguiar's services?
According to the CMS Revalidation Reassignment List (October 2026 release), David Aguiar reassigns Medicare benefits to 3 organizations: Edward Health Ventures (Naperville, IL), Dupage Medical Group Ltd (Downers Grove, IL) and Endeavor Health Medical Group (Evanston, IL). 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 David Aguiar's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does David Aguiar accept?
Health plans from Ambetter Health, Ambetter Health of Delaware and Oscar Health list David Aguiar as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is David Aguiar affiliated with any hospitals?
According to CMS data, David Aguiar is affiliated with Edward Hospital.
When was this NPI record last updated?
The NPPES record for David Aguiar was last updated on February 22, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.
# Dr. David J Aguiar, MD · NPI 1679660229
Obstetrics & Gynecology physician in Naperville, Illinois. Individual provider, active in the CMS NPPES registry since October 6, 2006.
## Identity
- **NPI:** 1679660229 (Entity type: Individual)
- **Enumerated:** October 6, 2006
- **Primary specialty:** Obstetrics & Gynecology · taxonomy 207V00000X
- **State license:** 036090965 (Illinois)
- **Sole proprietor:** No
## Practice location
- **Address:** 100 SPALDING DR STE 406, Naperville, IL 60540-6554
- **Phone:** (630) 961-9485 · **Fax:** (630) 961-9578
## 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): Edward Health Ventures (NPI 1063830081, Naperville, IL); Dupage Medical Group Ltd (NPI 1801833983, Downers Grove, IL); Endeavor Health Medical Group (NPI 1497701882, Evanston, IL) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Wayne State University School Of Medicine, class of 1992
## Record status
- **NPPES last updated:** February 22, 2021
- **Other identifiers:** Medicaid 036090965 (IL)
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Source: [NPI Profile](https://npiprofile.com/npi/1679660229) · Data from the CMS NPPES public registry.