EILEEN CASTILLO GAJO MD
NPI 1083091946
Internal Medicine - Cardiovascular Disease in Evanston, IL
About Eileen Castillo Gajo Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
EILEEN CASTILLO GAJO MD (NPI 1083091946) is an individual cardiovascular disease provider in Evanston, Illinois, licensed in California (A195889) and active in the NPI registry since April 2015. She is enrolled in Medicare PECOS and is a graduate of Other (2015).
NPPES Registry Identity
Specialties & Licenses 3
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Eileen Castillo Gajo 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 60201 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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
EVANSTON, IL 60201
EVANSTON, IL 60201
EVANSTON, IL 60201
EVANSTON, IL 60201
EVANSTON, IL 60201
EVANSTON, IL 60201
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 Eileen Gajo's NPI number?
The NPI number for Eileen Gajo is 1083091946. It was assigned to this individual provider in the NPPES registry on April 29, 2015.
Where is Eileen Gajo located?
Eileen Gajo practices at 2650 Ridge Ave, Evanston, IL 60201. The listed phone number is (847) 570-2509.
What is Eileen Gajo's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.
Is Eileen Gajo enrolled in Medicare?
Yes. Eileen Gajo 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.
What insurance does Eileen Gajo accept?
Health plans from Ambetter Health, Ambetter Health of Delaware and Ambetter from Home State Health list Eileen Gajo 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.
When was this NPI record last updated?
The NPPES record for Eileen Gajo was last updated on July 7, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.
# Eileen Castillo Gajo, MD · NPI 1083091946
Cardiovascular Disease physician in Evanston, Illinois. Individual provider, active in the CMS NPPES registry since April 29, 2015.
## Identity
- **NPI:** 1083091946 (Entity type: Individual)
- **Enumerated:** April 29, 2015
- **Primary specialty:** Internal Medicine - Cardiovascular Disease · taxonomy 207RC0000X
- **State license:** A195889 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 2650 RIDGE AVE, Evanston, IL 60201
- **Phone:** (847) 570-2509
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Medical school:** Other, class of 2015
## Record status
- **NPPES last updated:** July 7, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1083091946) · Data from the CMS NPPES public registry.