SIDRAH MAHMUD MD
NPI 1265859144
Psychiatry & Neurology - Neurology in East Setauket, NY
About Sidrah Mahmud Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
SIDRAH MAHMUD MD (NPI 1265859144) is an individual neurology provider in East Setauket, New York, licensed in New Jersey (25MA11145300) and active in the NPI registry since March 2014. She is enrolled in Medicare PECOS, is affiliated with Clara Maass Medical Center, and is a graduate of State University Of New York Downstate Medical Center (2013).
NPPES Registry Identity
Specialties & Licenses 2
Accepted Insurance
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
Sidrah Mahmud Md 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 Sidrah Mahmud reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Englewood Cliffs, NJ 07632
- Reassigned Medicare billing, New Jersey enrollment
- 155 clinicians in this Medicare group
Trenton, NJ 08638
- Reassigned Medicare billing, New Jersey enrollment
- 581 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 9
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.
Hospital Affiliations CMS Care Compare 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Clara Maass Medical Center
Acute Care Hospitals · Belleville, NJCooperman Barnabas Medical Center
Acute Care Hospitals · Livingston, NJPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 11733 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
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 Sidrah Mahmud's NPI number?
The NPI number for Sidrah Mahmud is 1265859144. It was assigned to this individual provider in the NPPES registry on March 28, 2014.
Where is Sidrah Mahmud located?
Sidrah Mahmud practices at 181 N Belle Mead Ave Ste 5, East Setauket, NY 11733. The listed phone number is (631) 444-2599.
What is Sidrah Mahmud's specialty?
The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Neurology, with taxonomy code 2084N0400X.
Is Sidrah Mahmud enrolled in Medicare?
Yes. Sidrah Mahmud 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 Sidrah Mahmud's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Sidrah Mahmud reassigns Medicare benefits to 2 organizations: Hudson MD Group (Englewood Cliffs, NJ) and Capital Health Medical Group (Trenton, NJ). 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 Sidrah Mahmud's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Sidrah Mahmud accept?
Health plans from Ambetter Health, Ambetter Health of Delaware and Oscar Health list Sidrah Mahmud 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.
Is Sidrah Mahmud affiliated with any hospitals?
According to CMS data, Sidrah Mahmud is affiliated with Clara Maass Medical Center and Cooperman Barnabas Medical Center.
When was this NPI record last updated?
The NPPES record for Sidrah Mahmud was last updated on September 17, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 months 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.
# Sidrah Mahmud, MD · NPI 1265859144
Neurology physician in East Setauket, New York. Individual provider, active in the CMS NPPES registry since March 28, 2014.
## Identity
- **NPI:** 1265859144 (Entity type: Individual)
- **Enumerated:** March 28, 2014
- **Primary specialty:** Psychiatry & Neurology - Neurology · taxonomy 2084N0400X
- **State license:** 25MA11145300 (New Jersey)
- **Sole proprietor:** No
## Practice location
- **Address:** 181 N BELLE MEAD AVE STE 5, East Setauket, NY 11733-3495
- **Phone:** (631) 444-2599
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Hudson MD Group (NPI 1497301998, Englewood Cliffs, NJ); Capital Health Medical Group (NPI 1437516887, Trenton, NJ) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** State University Of New York Downstate Medical Center, class of 2013
## Record status
- **NPPES last updated:** September 17, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1265859144) · Data from the CMS NPPES public registry.