MARY T DENNING LCSW
NPI 1174999437
Social Worker - Clinical in Farmingdale, NY
About Mary T Denning Lcsw NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARY T DENNING LCSW (NPI 1174999437) is an individual clinical provider in Farmingdale, New York, licensed in New York (087201) and active in the NPI registry since August 2015. 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)
Mary T Denning Lcsw is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
4Medicare enrollment records show Mary Denning reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Brooklyn, NY 11235
- Reassigned Medicare billing, New York enrollment
- 436 clinicians in this Medicare group
Brooklyn, NY 11201
- Reassigned Medicare billing, New York enrollment
- 457 clinicians in this Medicare group
Highland Park, NJ 08904
- Reassigned Medicare billing, New York enrollment
- 12 clinicians in this Medicare group
Ann Arbor, MI 48104
- Reassigned Medicare billing, New York enrollment
- 103 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 11735 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 16
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
FARMINGDALE, NY 11735
FARMINGDALE, NY 11735
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 Mary Denning's NPI number?
The NPI number for Mary Denning is 1174999437. It was assigned to this individual provider in the NPPES registry on August 20, 2015.
Where is Mary Denning located?
Mary Denning practices at 1111 Broadhollow Rd Suite 204, Farmingdale, NY 11735. The listed phone number is (631) 741-7719.
What is Mary Denning's specialty?
The primary specialty registered for this NPI is Social Worker, specializing in Clinical, with taxonomy code 1041C0700X.
Is Mary Denning enrolled in Medicare?
Yes. Mary Denning is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Mary Denning's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mary Denning reassigns Medicare benefits to 4 organizations: Knapp Street Psychiatry, PC (Brooklyn, NY), Che Senior Psychological Services, PC (Brooklyn, NY), Wellqor Psychological Services Northeast, PC (Highland Park, NJ) and Aldad Medical PC (Ann Arbor, MI). 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 Mary Denning's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Mary Denning accept?
Health plans from Oscar Health list Mary Denning 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 Mary Denning was last updated on July 3, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.
# Mary T Denning, LCSW · NPI 1174999437
Clinical provider in Farmingdale, New York. Individual provider, active in the CMS NPPES registry since August 20, 2015.
## Identity
- **NPI:** 1174999437 (Entity type: Individual)
- **Enumerated:** August 20, 2015
- **Primary specialty:** Social Worker - Clinical · taxonomy 1041C0700X
- **State license:** 087201 (New York)
- **Sole proprietor:** No
## Practice location
- **Address:** 1111 BROADHOLLOW RD, SUITE 204, Farmingdale, NY 11735-4820
- **Phone:** (631) 741-7719
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment
- **Bills Medicare through:** 4 organizations under Medicare reassignment (form CMS-855R): Knapp Street Psychiatry, PC (NPI 1043248776, Brooklyn, NY); Che Senior Psychological Services, PC (NPI 1023078219, Brooklyn, NY); Wellqor Psychological Services Northeast, PC (NPI 1326442567, Highland Park, NJ); Aldad Medical PC (NPI 1174784953, Ann Arbor, MI) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** July 3, 2023
---
Source: [NPI Profile](https://npiprofile.com/npi/1174999437) · Data from the CMS NPPES public registry.