Eileen Castillo Gajo, MD in Evanston, IL - Medicare Internal Medicine

Eileen Castillo Gajo, MD is a medicare enrolled "Internal Medicine - Cardiovascular Disease" physician in Evanston, Illinois. Her current practice location is 2650 Ridge Ave, Evanston, Illinois. You can reach out to her office (for appointments etc.) via phone at (847) 570-2509.

Eileen Castillo Gajo is licensed to practice in California (license number A195889) and she also participates in the medicare program. She does not accept medicare assignments directly but she may accept medicare through third-party (refer to Reassignment section below) and may also prescribe medicare part D drugs. Her NPI Number is 1083091946.

Contact Information

	Eileen Castillo Gajo, MD
	2650 Ridge Ave, Evanston, IL 60201
	(847) 570-2509
	Not Available

Map and Direction

Physician's Profile

Full Name	Eileen Castillo Gajo
Gender	Female
Speciality	Internal Medicine - Cardiovascular Disease
Location	2650 Ridge Ave, Evanston, Illinois
Accepts Medicare Assignments	Medicare enrolled and may accept medicare through third-party reassignment. May prescribe medicare part D drugs.

NPI Data:

NPI Number: 1083091946
Provider Enumeration Date: 04/29/2015
Last Update Date: 07/07/2025

Medicare PECOS Information:

PECOS PAC ID: 1850694803
Enrollment ID: I20180712003025

Medical Identifiers

Medical identifiers for Eileen Castillo Gajo such as npi, medicare ID, medicare PIN, medicaid, etc.

Identifier	Type	State	Issuer
1083091946	NPI	-	NPPES

Medical Taxonomies and Licenses

Taxonomy	Type	License (State)	Status
207R00000X	Internal Medicine	036146425 (Illinois)	Secondary
390200000X	Student In An Organized Health Care Education/training Program	(* (Not Available))	Secondary
207RC0000X	Internal Medicine - Cardiovascular Disease	A195889 (California)	Primary

Medicare Reassignments

Some practitioners may not bill the customers directly but medicare billing happens through clinics / group practice / hospitals where the provider works. Medicare reassignment of benefits is a mechanism by which practitioners allow third parties to bill and receive payment for medicare services performed by them. Eileen Castillo Gajo allows following entities to bill medicare on her behalf.

Entity Name	Endeavor Health Medical Group
Entity Type	Part B Supplier - Clinic/group Practice
Entity Identifiers	NPI Number: 1497701882 PECOS PAC ID: 2163334699 Enrollment ID: O20040524000118

Entity Name	Rush Oak Park Physicians Group Adult Medicine
Entity Type	Part B Supplier - Clinic/group Practice
Entity Identifiers	NPI Number: 1548531924 PECOS PAC ID: 3476716523 Enrollment ID: O20120529000606

Medicare Part D Prescriber Enrollment

Any physician or other eligible professional who prescribes Part D drugs must either enroll in the Medicare program or opt out in order to prescribe drugs to their patients with Part D prescription drug benefit plans. Eileen Castillo Gajo is enrolled with medicare and thus, if eligible, can prescribe medicare part D drugs to patients with medicare part D benefits.

Mailing Address and Practice Location

Mailing Address	Practice Location Address
Eileen Castillo Gajo, MD 2650 Ridge Ave, Evanston, IL 60201-1718 Ph: (847) 570-2509	Eileen Castillo Gajo, MD 2650 Ridge Ave, Evanston, IL 60201 Ph: (847) 570-2509

Reviews and Comments

Internal Medicine Doctors in Evanston, IL

James Francis Kelly, DO Cardiovascular Disease Medicare: Medicare Enrolled Practice Location: 2650 Ridge Ave., Im Hospitalists Ste 4206, Evanston, IL 60201 Phone: 847-570-1010 Fax: 847-733-5108
Andie Kwon, MD Cardiovascular Disease Medicare: Medicare Enrolled Practice Location: 2650 Ridge Ave Ste 1304, Evanston, IL 60201 Phone: 847-570-2700 Fax: 847-570-2822
Adela Kola, MD Cardiovascular Disease Medicare: Accepting Medicare Assignments Practice Location: 2650 Ridge Ave Ste 4210, Evanston, IL 60201 Phone: 847-570-1010 Fax: 847-733-5108
Matthew R. Sherwood, MD Cardiovascular Disease Medicare: Not Enrolled in Medicare Practice Location: 2650 Ridge Ave, Division Of Internal Medicine Rm 4324, Evanston, IL 60201 Phone: 847-570-1010 Fax: 847-733-5128
Dipika Oberoi, MD Cardiovascular Disease Medicare: Accepting Medicare Assignments Practice Location: 2650 Ridge Ave, Evanston, IL 60201 Phone: 847-570-2700
Neal N. Dodia, M.D. Cardiovascular Disease Medicare: Accepting Medicare Assignments Practice Location: 2650 Ridge Ave, Evanston, IL 60201 Phone: 847-982-3171
Kifah Hussain, MD Cardiovascular Disease Medicare: Medicare Enrolled Practice Location: 2650 Ridge Ave Ste 1304, Evanston, IL 60201 Phone: 847-570-1485

Eileen Castillo Gajo, MD - Medicare Internal Medicine in Evanston, IL