MRS. LEEANN BARBARA GRASSO LMSW
NPI 1639562754
Social Worker in Great Neck, NY
About Mrs. Leeann Barbara Grasso Lmsw NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MRS. LEEANN BARBARA GRASSO LMSW (NPI 1639562754) is an individual social worker in Great Neck, New York, licensed in New York (073105) and active in the NPI registry since March 2015. She is enrolled in Medicare PECOS and is a graduate of Other (2006).
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 and accepts Medicare assignment
Mrs. Leeann Barbara Grasso Lmsw is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
2Medicare enrollment records show Leeann Grasso reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Great Neck, NY 11021
- Reassigned Medicare billing, New York enrollment
- 49 clinicians in this Medicare group
Melville, NY 11747
- Reassigned Medicare billing, New York enrollment
- 45 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.
Areas of Expertise CMS Part B claims
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
GREAT NECK, NY 11021
GREAT NECK, NY 11021
GREAT NECK, NY 11021
GREAT NECK, NY 11021
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 Leeann Grasso's NPI number?
The NPI number for Leeann Grasso is 1639562754. It was assigned to this individual provider in the NPPES registry on March 13, 2015.
Where is Leeann Grasso located?
Leeann Grasso practices at 800 Northern Blvd, Great Neck, NY 11021. The listed phone number is (516) 829-9666.
What is Leeann Grasso's specialty?
The primary specialty registered for this NPI is Social Worker with taxonomy code 104100000X.
Is Leeann Grasso enrolled in Medicare?
Yes. Leeann Grasso is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Leeann Grasso's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Leeann Grasso reassigns Medicare benefits to 2 organizations: Welllife Network Inc. (Great Neck, NY) and Visiting Counselors Of New York, Lcsw, PLLC (Melville, 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 Leeann Grasso'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 Leeann Grasso was last updated on March 13, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.
# Mrs. Leeann Barbara Grasso, LMSW · NPI 1639562754
Social Worker provider in Great Neck, New York. Individual provider, active in the CMS NPPES registry since March 13, 2015.
## Identity
- **NPI:** 1639562754 (Entity type: Individual)
- **Enumerated:** March 13, 2015
- **Primary specialty:** Social Worker · taxonomy 104100000X
- **State license:** 073105 (New York)
- **Sole proprietor:** No
## Practice location
- **Address:** 800 NORTHERN BLVD, Great Neck, NY 11021-5340
- **Phone:** (516) 829-9666 · **Fax:** (516) 482-0692
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Welllife Network Inc. (NPI 1477864866, Great Neck, NY); Visiting Counselors Of New York, Lcsw, PLLC (NPI 1669906889, Melville, NY) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2006
## Record status
- **NPPES last updated:** March 13, 2015
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Source: [NPI Profile](https://npiprofile.com/npi/1639562754) · Data from the CMS NPPES public registry.