DAVID A SISK PHD INC
NPI 1720654007
Clinic/Center - Mental Health (Including Community Mental Health Center) in Winnetka, IL
About David A Sisk Phd Inc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DAVID A SISK PHD INC (NPI 1720654007) is a healthcare organization registered as a mental health (including community mental health center) in Winnetka, Illinois and active in the NPI registry since May 2021. The organization lists David A Sisk, President, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
David A Sisk Phd Inc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
Medicare enrollment records show 1 clinician reassigns Medicare billing to David A Sisk Phd Inc, which bills Medicare for the services this clinician delivers.
Clinician (1)
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 David A Sisk Phd Inc's NPI number?
The NPI number for David A Sisk Phd Inc is 1720654007. It was assigned to this organization in the NPPES registry on May 27, 2021.
Where is David A Sisk Phd Inc located?
David A Sisk Phd Inc is located at 588 Lincoln Ave Ste 200, Winnetka, IL 60093. The listed phone number is (773) 732-5073.
What is David A Sisk Phd Inc's specialty?
The primary specialty registered for this NPI is Clinic/Center, specializing in Mental Health (Including Community Mental Health Center), with taxonomy code 261QM0801X.
Is David A Sisk Phd Inc enrolled in Medicare?
Yes. David A Sisk Phd Inc is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through David A Sisk Phd Inc?
According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Clinical Social Worker) reassigns their Medicare billing to David A Sisk Phd Inc. 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. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
When was this NPI record last updated?
The NPPES record for David A Sisk Phd Inc was last updated on May 27, 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.
# David A Sisk Phd Inc · NPI 1720654007
Mental Health (Including Community Mental Health Center) organization in Winnetka, Illinois. Organization record, active in the CMS NPPES registry since May 27, 2021.
## Identity
- **NPI:** 1720654007 (Entity type: Organization)
- **Enumerated:** May 27, 2021
- **Primary specialty:** Clinic/Center - Mental Health (Including Community Mental Health Center) · taxonomy 261QM0801X
- **Organization subpart:** No
- **Authorized official:** David Sisk, PRESIDENT
## Practice location
- **Address:** 588 LINCOLN AVE STE 200, Winnetka, IL 60093-2308
- **Phone:** (773) 732-5073
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 1 clinician (Clinical Social Worker) reassigns Medicare billing to this organization (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** May 27, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1720654007) · Data from the CMS NPPES public registry.