Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

SYNERGY BEHAVIORAL HEALTH LLC
NPI 1114671492
Nurse Practitioner - Psychiatric/Mental Health in Westchester, IL

Q: What is Synergy Behavioral Health LLC's NPI number?

The NPI number for Synergy Behavioral Health LLC is 1114671492. It was assigned to this organization in the NPPES registry on February 7, 2022. The provider is doing business as 21 Century Works LLC, Synergy Behavioral Health and Synergy Telemed.

Q: What is Synergy Behavioral Health LLC's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Psychiatric/Mental Health, with taxonomy code 363LP0808X.

Active since February 07, 2022

1 WESTBROOK CORPORATE CTR STE 300, WESTCHESTER, IL 60154(800) 460-9633(630) 358-6690 Get Directions Write a Review

NPPES record last updated: October 13, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Oct 13, 2026, Mar 4, 2024, Feb 9, 2024 and 2 more (5 updates tracked since 2022).

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About Synergy Behavioral Health Llc NPPES

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

SYNERGY BEHAVIORAL HEALTH LLC (NPI 1114671492), doing business as 21 Century Works Llc, is a healthcare organization registered as a psychiatric/mental health in Westchester, Illinois and active in the NPI registry since February 2022. The organization lists Doris Nwoko, Ceo, as its authorized official.

NPPES Registry Identity

NPI1114671492

Entity TypeOrganization

Primary Taxonomy363LP0808X

Legal Business NameSYNERGY BEHAVIORAL HEALTH LLC

Location Address1 WESTBROOK CORPORATE CTR STE 300Westchester, IL 60154-5709

Mailing Address1 Westbrook Corporate Ctr Ste 300Westchester, IL 60154-5709 · (331) 684-0383 · Fax (844) 689-5173

Phone(800) 460-9633

Fax(630) 358-6690

Organization SubpartNo

Authorized OfficialDoris NwokoCeo · (312) 593-4127

Enumeration DateFebruary 7, 2022

Last NPPES UpdateOctober 13, 20265 updates tracked since enumeration

NPPES CertifiedOctober 13, 2026

✔ NPI 1114671492 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyNurse Practitioner · Psychiatric/Mental HealthPhysician Assistants & Advanced Practice Nursing Providers

Taxonomy Code363LP0808X

Also ListedPsychiatry & Neurology · PsychiatryTaxonomy 2084P0800X

1 WESTBROOK CORPORATE CTR STE 300, Westchester, IL 60154

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Other Names 3

Doing Business As21 Century Works Llc

Doing Business AsSynergy Behavioral Health

Doing Business AsSynergy Telemed

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

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

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 3 clinicians reassign Medicare billing to Synergy Behavioral Health LLC, which bills Medicare for the services they deliver. Of these, 1 practice at this address. They are listed nearest first.

Clinicians, nearest first (3)

Doris Nwoko, APRN

Nurse Practitioner

NPI 1811585425

1 WESTBROOK CORPORATE CTR STE 300
Westchester, IL 60154

(331) 684-0383

✔ PECOS✔ Accepts MedicareSame address

Damilola Olusanya

Nurse Practitioner

NPI 1043043219

820 S DAMEN AVE
Chicago, IL 60612

(312) 569-7225

✔ PECOS11 mi

Cynthia Rusnak

Nurse Practitioner

NPI 1417567546

10735 S CICERO AVE STE 100
Oak Lawn, IL 60453

(708) 636-2211

✔ PECOS13 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 Synergy Behavioral Health LLC's NPI number?

The NPI number for Synergy Behavioral Health LLC is 1114671492. It was assigned to this organization in the NPPES registry on February 7, 2022. The provider is doing business as 21 Century Works LLC, Synergy Behavioral Health and Synergy Telemed.

Where is Synergy Behavioral Health LLC located?

Synergy Behavioral Health LLC is located at 1 Westbrook Corporate Ctr Ste 300, Westchester, IL 60154. The listed phone number is (800) 460-9633.

What is Synergy Behavioral Health LLC's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Psychiatric/Mental Health, with taxonomy code 363LP0808X.

Is Synergy Behavioral Health LLC enrolled in Medicare?

Yes. Synergy Behavioral Health LLC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Synergy Behavioral Health LLC?

According to the CMS Revalidation Reassignment List (October 2026 release), 3 clinicians, all in Nurse Practitioner, reassign their Medicare billing to Synergy Behavioral Health LLC. 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. Of these, 1 practice at this address. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Synergy Behavioral Health LLC was last updated on October 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 days 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.