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PETER T. SIMONSON, M.D., P.L.L.C.
NPI 1851448880
Specialist in Suffern, NY

Active since January 04, 2007
257 LAFAYETTE AVE STE 120, SUFFERN, NY 10901(845) 369-9100(845) 369-6738 Get Directions Write a Review

NPPES record last updated: January 8, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Jan 8, 2026, Aug 22, 2020 (2 updates tracked since 2020).

About Peter T. Simonson, M.d., P.l.l.c. NPPES

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

PETER T. SIMONSON, M.D., P.L.L.C. (NPI 1851448880) is a healthcare organization registered as a specialist in Suffern, New York and active in the NPI registry since January 2007. The organization lists Peter T. Simonson, Doctor, as its authorized official.

NPPES Registry Identity

NPI1851448880
Entity TypeOrganization
Primary Taxonomy174400000X
Legal Business NamePETER T. SIMONSON, M.D., P.L.L.C.
Location Address257 LAFAYETTE AVE STE 120Suffern, NY 10901-4832
Mailing Address257 Lafayette Ave Ste 120Suffern, NY 10901-4832 · (845) 369-9100 · Fax (845) 369-6738
Phone(845) 369-9100
Fax(845) 369-6738
Organization SubpartNo
Authorized OfficialPeter T. SimonsonDoctor · (845) 369-9100
Enumeration DateJanuary 4, 2007
Last NPPES UpdateJanuary 8, 20262 updates tracked since enumeration
NPPES CertifiedJanuary 8, 2026
✔ NPI 1851448880 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySpecialistOther Service Providers
Taxonomy Code174400000X
License✔ Licensed in NY · 176473
Definition
An individual educated and trained in an applied knowledge discipline used in the performance of work at a level requiring knowledge and skills beyond or apart from that provided by a general education or liberal arts degree.
257 LAFAYETTE AVE STE 120, Suffern, NY 10901
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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

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Peter T. Simonson, M.d., P.l.l.c. 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 Peter T. Simonson, M.D., P.L.L.C., which bills Medicare for the services this clinician delivers.

Clinician (1)

Peter Simonson, MD
Obstetrics/Gynecology
NPI 1811973258
257 LAFAYETTE AVENUE SUITE 120 SUFFERN MEDICAL PAVILION
Suffern, NY 10901
(845) 369-9100
✔ 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 Peter T. Simonson, M.D., P.L.L.C.'s NPI number?

The NPI number for Peter T. Simonson, M.D., P.L.L.C. is 1851448880. It was assigned to this organization in the NPPES registry on January 4, 2007.

Where is Peter T. Simonson, M.D., P.L.L.C. located?

Peter T. Simonson, M.D., P.L.L.C. is located at 257 Lafayette Ave Ste 120, Suffern, NY 10901. The listed phone number is (845) 369-9100.

What is Peter T. Simonson, M.D., P.L.L.C.'s specialty?

The primary specialty registered for this NPI is Specialist with taxonomy code 174400000X.

Is Peter T. Simonson, M.D., P.L.L.C. enrolled in Medicare?

Yes. Peter T. Simonson, M.D., P.L.L.C. is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Peter T. Simonson, M.D., P.L.L.C.?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Obstetrics/Gynecology) reassigns their Medicare billing to Peter T. Simonson, M.D., P.L.L.C.. 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.

When was this NPI record last updated?

The NPPES record for Peter T. Simonson, M.D., P.L.L.C. was last updated on January 8, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.