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NS MEDICAL ASSOCIATES, PLLC
NPI 1639773161
Surgery in Portsmouth, NH

Active since November 25, 2020
333 BORTHWICK AVE STE 305, PORTSMOUTH, NH 03801(603) 433-6994 Get Directions Write a Review

NPPES record last updated: November 17, 2023. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Nov 17, 2023, Nov 25, 2020 (2 updates tracked since 2020).

About Ns Medical Associates, Pllc NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

NS MEDICAL ASSOCIATES, PLLC (NPI 1639773161) is a healthcare organization registered as a surgery in Portsmouth, New Hampshire and active in the NPI registry since November 2020. The organization maintains 2 additional practice locations and lists Natasha Saiyed, Manager, as its authorized official.

NPPES Registry Identity

NPI1639773161
Entity TypeOrganization
Primary Taxonomy208600000X
Legal Business NameNS MEDICAL ASSOCIATES, PLLC
Location Address333 BORTHWICK AVE STE 305Portsmouth, NH 03801-7128
Mailing Address345 Heritage Ave Unit 541Portsmouth, NH 03801-9995 · (630) 290-7016
Phone(603) 433-6994
Organization SubpartNo
Authorized OfficialNatasha SaiyedManager · (630) 290-7016
Enumeration DateNovember 25, 2020
Last NPPES UpdateNovember 17, 20232 updates tracked since enumeration
NPPES CertifiedNovember 17, 2023
✔ NPI 1639773161 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySurgeryAllopathic & Osteopathic Physicians
Taxonomy Code208600000X
Definition
A general surgeon has expertise related to the diagnosis - preoperative, operative and postoperative management - and management of complications of surgical conditions in the following areas: alimentary tract; abdomen; breast, skin and soft tissue; endocrine system; head and neck surgery; pediatric surgery; surgical critical care; surgical oncology; trauma and burns; and vascular surgery. General surgeons increasingly provide care through the use of minimally invasive and endoscopic techniques. Many general surgeons also possess expertise in transplantation surgery, plastic surgery and cardiothoracic surgery.
333 BORTHWICK AVE STE 305, Portsmouth, NH 03801
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Secondary Practice Locations 2

Location 144 Birch St Ste 209Derry, NH 03038-2752 · Phone (603) 421-3688
Location 211 Whitehall RdRochester, NH 03867-3226 · Phone (603) 330-7914

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from NH Healthy Families, WellSense Health Plan.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Ns Medical Associates, Pllc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 1 clinician reassigns Medicare billing to Ns Medical Associates, PLLC, which bills Medicare for the services this clinician delivers.

Clinician (1)

Natasha Saiyed, M.D.
General Surgery
NPI 1750624409
333 BORTHWICK AVE STE 305
Portsmouth, NH 03801
(603) 433-6994
✔ PECOS✔ Accepts MedicareSame address

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 Ns Medical Associates, PLLC's NPI number?

The NPI number for Ns Medical Associates, PLLC is 1639773161. It was assigned to this organization in the NPPES registry on November 25, 2020.

Where is Ns Medical Associates, PLLC located?

Ns Medical Associates, PLLC is located at 333 Borthwick Ave Ste 305, Portsmouth, NH 03801. The listed phone number is (603) 433-6994.

What is Ns Medical Associates, PLLC's specialty?

The primary specialty registered for this NPI is Surgery with taxonomy code 208600000X.

Is Ns Medical Associates, PLLC enrolled in Medicare?

Yes. Ns Medical Associates, PLLC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Ns Medical Associates, PLLC?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (General Surgery) reassigns their Medicare billing to Ns Medical Associates, PLLC. A 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 the clinician's services. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

What insurance does Ns Medical Associates, PLLC accept?

Health plans from Ambetter from NH Healthy Families and WellSense Health Plan list Ns Medical Associates, PLLC 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.

When was this NPI record last updated?

The NPPES record for Ns Medical Associates, PLLC was last updated on November 17, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.