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OAKBROOK BEHAVIORAL HEALTH LTD
NPI 1235235730
Psychiatry & Neurology - Psychiatry in Downers Grove, IL

Active since September 15, 2006
1401 BRANDING AVE STE 312, DOWNERS GROVE, IL 60515(630) 424-9204(630) 424-4783 Get Directions Write a Review

NPPES record last updated: September 2, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Sep 2, 2025, Apr 30, 2019, Mar 12, 2019 (3 updates tracked since 2019).

About Oakbrook Behavioral Health Ltd NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

OAKBROOK BEHAVIORAL HEALTH LTD (NPI 1235235730) is a healthcare organization registered as a psychiatry in Downers Grove, Illinois and active in the NPI registry since September 2006. The organization lists Carmen Ortiz, Billing Manager, as its authorized official.

NPPES Registry Identity

NPI1235235730
Entity TypeOrganization
Primary Taxonomy2084P0800X
Legal Business NameOAKBROOK BEHAVIORAL HEALTH LTD
Location Address1401 BRANDING AVE STE 312Downers Grove, IL 60515-1171
Mailing AddressPo Box 5970Villa Park, IL 60181-5312 · (630) 424-9482 · Fax (630) 424-4783
Phone(630) 424-9204
Fax(630) 424-4783
Organization SubpartNo
Authorized OfficialCarmen OrtizBilling Manager · (630) 424-9482
Enumeration DateSeptember 15, 2006
Last NPPES UpdateSeptember 2, 20253 updates tracked since enumeration
NPPES CertifiedSeptember 2, 2025
✔ NPI 1235235730 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · PsychiatryAllopathic & Osteopathic Physicians
Taxonomy Code2084P0800X
Definition
A Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.
1401 BRANDING AVE STE 312, Downers Grove, IL 60515
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Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Oakbrook Behavioral Health Ltd is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

6

Medicare enrollment records show 6 clinicians reassign Medicare billing to Oakbrook Behavioral Health Ltd, which bills Medicare for the services they deliver. Of these, 3 practice at this address and 6 within 10 miles. They are listed nearest first.

Clinicians, nearest first (6)

Donna Dobrowolsky, MD
Psychiatry
NPI 1194825851
1401 BRANDING AVE STE 312
Downers Grove, IL 60515
(630) 424-9482
✔ PECOS✔ Accepts MedicareSame address
Osama El-Shafie, MD
Psychiatry
NPI 1912004623
1401 BRANDING AVE STE 312
Downers Grove, IL 60515
(630) 424-9204
✔ PECOS✔ Accepts MedicareSame address
Khadija Khan, MD
Psychiatry
NPI 1740387547
1401 BRANDING AVE STE 312
Downers Grove, IL 60515
(630) 424-9204
✔ PECOS✔ Accepts MedicareSame address
Farozan Islam, DO
Psychiatry
NPI 1750426540
2803 BUTTERFIELD RD STE 200
Oak Brook, IL 60523
(630) 424-9204
✔ PECOS✔ Accepts Medicare2.1 mi
Melany Danehy, MD
Neuropsychiatry
NPI 1952387318
25 N WINFIELD RD STE 432
Winfield, IL 60190
(630) 933-4056
✔ PECOS✔ Accepts Medicare7.7 mi
John Reifenstuhl, LCSW
Clinical Social Worker
NPI 1174636211
800 W FIFTH AVE STE 101A
Naperville, IL 60563
(630) 778-6159
✔ PECOS✔ Accepts Medicare8.2 mi

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

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 Oakbrook Behavioral Health Ltd's NPI number?

The NPI number for Oakbrook Behavioral Health Ltd is 1235235730. It was assigned to this organization in the NPPES registry on September 15, 2006.

Where is Oakbrook Behavioral Health Ltd located?

Oakbrook Behavioral Health Ltd is located at 1401 Branding Ave Ste 312, Downers Grove, IL 60515. The listed phone number is (630) 424-9204.

What is Oakbrook Behavioral Health Ltd's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.

Is Oakbrook Behavioral Health Ltd enrolled in Medicare?

Yes. Oakbrook Behavioral Health Ltd is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Oakbrook Behavioral Health Ltd?

According to the CMS Revalidation Reassignment List (October 2026 release), 6 clinicians in 3 Medicare specialties reassign their Medicare billing to Oakbrook Behavioral Health Ltd. A 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 the clinician's services. The largest specialties are Psychiatry (4), Clinical Social Worker (1) and Neuropsychiatry (1). Of these, 3 practice at this address and 6 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Oakbrook Behavioral Health Ltd was last updated on September 2, 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.