JENNIFER THIEKE
NPI 1003589573
Social Worker in Port Jefferson, NY
About Jennifer Thieke NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JENNIFER THIEKE (NPI 1003589573) is an individual social worker in Port Jefferson, New York, licensed in New York (052481-01) and active in the NPI registry since July 2021. She is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Jennifer Thieke is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Jennifer Thieke reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Port Jefferson, NY 11777
- Reassigned Medicare billing, New York enrollment
- 2 clinicians in this Medicare group
Smithtown, NY 11787
- Reassigned Medicare billing, New York enrollment
- 16 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Other Providers at the Same Location NPPES 11
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
PORT JEFFERSON, NY 11777
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 Jennifer Thieke's NPI number?
The NPI number for Jennifer Thieke is 1003589573. It was assigned to this individual provider in the NPPES registry on July 29, 2021.
Where is Jennifer Thieke located?
Jennifer Thieke practices at 1227 Main St, Port Jefferson, NY 11777. The listed phone number is (516) 946-3495.
What is Jennifer Thieke's specialty?
The primary specialty registered for this NPI is Social Worker with taxonomy code 104100000X.
Is Jennifer Thieke enrolled in Medicare?
Yes. Jennifer Thieke is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Jennifer Thieke's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Jennifer Thieke reassigns Medicare benefits to 2 organizations: Susan Goryeb Simms, Licensed Clinical Social Worker, PC (Port Jefferson, NY) and Rachel Lessard Lcsw PC (Smithtown, NY). Each 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 Jennifer Thieke's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Jennifer Thieke accept?
Health plans from Oscar Health list Jennifer Thieke 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 Jennifer Thieke was last updated on October 22, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.
# Jennifer Thieke · NPI 1003589573
Social Worker provider in Port Jefferson, New York. Individual provider, active in the CMS NPPES registry since July 29, 2021.
## Identity
- **NPI:** 1003589573 (Entity type: Individual)
- **Enumerated:** July 29, 2021
- **Primary specialty:** Social Worker · taxonomy 104100000X
- **State license:** 052481-01 (New York)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 1227 MAIN ST, Port Jefferson, NY 11777-2227
- **Phone:** (516) 946-3495
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Susan Goryeb Simms, Licensed Clinical Social Worker, PC (NPI 1821694928, Port Jefferson, NY); Rachel Lessard Lcsw PC (NPI 1427693217, Smithtown, NY) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** October 22, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1003589573) · Data from the CMS NPPES public registry.