MS. MARY CATHERINE SMITH LCSW
NPI 1841684784
Social Worker in Smithtown, NY
About Ms. Mary Catherine Smith Lcsw NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MS. MARY CATHERINE SMITH LCSW (NPI 1841684784) is an individual social worker in Smithtown, New York, licensed in New York (087942) and active in the NPI registry since March 2015. She is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Ms. Mary Catherine Smith Lcsw is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Mary Catherine Smith reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Kings Park, NY 11754
- Reassigned Medicare billing, New York enrollment
- 4 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.
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 Catherine Smith's NPI number?
The NPI number for Mary Catherine Smith is 1841684784. It was assigned to this individual provider in the NPPES registry on March 27, 2015.
Where is Mary Catherine Smith located?
Mary Catherine Smith practices at 22 Lawrence Ave, Ste 213, Castle Counseling, Smithtown, NY 11787. The listed phone number is (631) 219-0532.
What is Mary Catherine Smith's specialty?
The primary specialty registered for this NPI is Social Worker with taxonomy code 104100000X.
Is Mary Catherine Smith enrolled in Medicare?
Yes. Mary Catherine Smith is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Mary Catherine Smith's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mary Catherine Smith reassigns Medicare benefits to Castle Counseling Lcsw PC (Kings Park, NY). The 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 Catherine Smith's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Mary Catherine Smith was last updated on October 16, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.
# Ms. Mary Catherine Smith, LCSW · NPI 1841684784
Social Worker provider in Smithtown, New York. Individual provider, active in the CMS NPPES registry since March 27, 2015.
## Identity
- **NPI:** 1841684784 (Entity type: Individual)
- **Enumerated:** March 27, 2015
- **Primary specialty:** Social Worker · taxonomy 104100000X
- **State license:** 087942 (New York)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 22 LAWRENCE AVE, STE 213, CASTLE COUNSELING, Smithtown, NY 11787
- **Phone:** (631) 219-0532
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for durable medical equipment
- **Bills Medicare through:** Castle Counseling Lcsw PC (NPI 1215317748, Kings Park, NY), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** October 16, 2019
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Source: [NPI Profile](https://npiprofile.com/npi/1841684784) · Data from the CMS NPPES public registry.