MAXWELL RESSLER SULTAN LMSW
NPI 1326311366
Social Worker in New York, NY
About Maxwell Ressler Sultan Lmsw NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MAXWELL RESSLER SULTAN LMSW (NPI 1326311366) is an individual social worker in New York, New York and active in the NPI registry since February 2012. He is enrolled in Medicare PECOS and is a graduate of Other (2016).
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)
Maxwell Ressler Sultan Lmsw is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Maxwell Sultan reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
New York, NY 10003
- Reassigned Medicare billing, New York enrollment
- 22 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
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Maxwell Sultan's NPI number?
The NPI number for Maxwell Sultan is 1326311366. It was assigned to this individual provider in the NPPES registry on February 22, 2012.
Where is Maxwell Sultan located?
Maxwell Sultan practices at 341 E 79th St Apt 302, New York, NY 10075. The listed phone number is (415) 596-8301.
What is Maxwell Sultan's specialty?
The primary specialty registered for this NPI is Social Worker with taxonomy code 104100000X.
Is Maxwell Sultan enrolled in Medicare?
Yes. Maxwell Sultan is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Maxwell Sultan's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Maxwell Sultan reassigns Medicare benefits to St. Mark's Place Institute For Mental Health, Inc (New York, 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 Maxwell Sultan'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 Maxwell Sultan was last updated on February 10, 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.
# Maxwell Ressler Sultan, LMSW · NPI 1326311366
Social Worker provider in New York, New York. Individual provider, active in the CMS NPPES registry since February 22, 2012.
## Identity
- **NPI:** 1326311366 (Entity type: Individual)
- **Enumerated:** February 22, 2012
- **Primary specialty:** Social Worker · taxonomy 104100000X
- **Sole proprietor:** No
## Practice location
- **Address:** 341 E 79TH ST APT 302, New York, NY 10075-1039
- **Phone:** (415) 596-8301
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment
- **Bills Medicare through:** St. Mark's Place Institute For Mental Health, Inc (NPI 1396783049, New York, NY), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2016
## Record status
- **NPPES last updated:** February 10, 2019
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Source: [NPI Profile](https://npiprofile.com/npi/1326311366) · Data from the CMS NPPES public registry.