MR. BRIAN HUGH MARREN LCSW-R
NPI 1376861427
Social Worker - Clinical in New York, NY
About Mr. Brian Hugh Marren Lcsw-r NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MR. BRIAN HUGH MARREN LCSW-R (NPI 1376861427) is an individual clinical provider in New York, New York, licensed in New York (043504-1) and active in the NPI registry since May 2010. He is enrolled in Medicare PECOS and is a graduate of Other (1991).
NPPES Registry Identity
Specialties & Licenses 2
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
Mr. Brian Hugh Marren Lcsw-r 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
3Medicare enrollment records show Brian Marren reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
New York, NY 10027
- Reassigned Medicare billing, New York enrollment
- 17 clinicians in this Medicare group
Fort Lee, NJ 07024
- Reassigned Medicare billing, New York enrollment
- 22 clinicians in this Medicare group
Miami, FL 33130
- Reassigned Medicare billing, New York enrollment
- 867 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 10001 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 20
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 Brian Marren's NPI number?
The NPI number for Brian Marren is 1376861427. It was assigned to this individual provider in the NPPES registry on May 13, 2010.
Where is Brian Marren located?
Brian Marren practices at 19 W 34th St Penthouse, New York, NY 10001. The listed phone number is (646) 353-0646.
What is Brian Marren's specialty?
The primary specialty registered for this NPI is Social Worker, specializing in Clinical, with taxonomy code 1041C0700X.
Is Brian Marren enrolled in Medicare?
Yes. Brian Marren 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 Brian Marren's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Brian Marren reassigns Medicare benefits to 3 organizations: Center For Alternative Sentencing And Employment Services (New York, NY), Doppler Psychology Services At Home PC (Fort Lee, NJ) and Grow Healthcare Group PA (Miami, FL). 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 Brian Marren'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 Brian Marren was last updated on May 13, 2010. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 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.
# Mr. Brian Hugh Marren, LCSW-R · NPI 1376861427
Clinical provider in New York, New York. Individual provider, active in the CMS NPPES registry since May 13, 2010.
## Identity
- **NPI:** 1376861427 (Entity type: Individual)
- **Enumerated:** May 13, 2010
- **Primary specialty:** Social Worker - Clinical · taxonomy 1041C0700X
- **State license:** 043504-1 (New York)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 19 W 34TH ST, PENTHOUSE, New York, NY 10001-3006
- **Phone:** (646) 353-0646
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment
- **Bills Medicare through:** 3 organizations under Medicare reassignment (form CMS-855R): Center For Alternative Sentencing And Employment Services (NPI 1932523438, New York, NY); Doppler Psychology Services At Home PC (NPI 1396338364, Fort Lee, NJ); Grow Healthcare Group PA (NPI 1245845932, Miami, FL) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1991
## Record status
- **NPPES last updated:** May 13, 2010
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Source: [NPI Profile](https://npiprofile.com/npi/1376861427) · Data from the CMS NPPES public registry.