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MRS. DIANE M LANGLOIS ARNP
NPI 1235201419
Nurse Practitioner - Adult Health in Portsmouth, NH

Active since November 14, 2006PECOS Enrolled
63.87/100
CMS Quality Rating
333 BORTHWICK AVE STE 301, PORTSMOUTH, NH 03801(603) 431-5858(603) 431-5818 Get Directions Write a Review

NPPES record last updated: January 9, 2019. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Jan 9, 2019, Feb 17, 2016 (2 updates tracked since 2016).

About Mrs. Diane M Langlois Arnp NPPES

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

MRS. DIANE M LANGLOIS ARNP (NPI 1235201419) is an individual adult health provider in Portsmouth, New Hampshire, licensed in New Hampshire (027358) and active in the NPI registry since November 2006. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1235201419
Entity TypeIndividualFemale
Primary Taxonomy363LA2200X
Provider Legal NameMRS. DIANE M LANGLOISCredential: ARNP
Location Address333 BORTHWICK AVE STE 301Portsmouth, NH 03801-7128
Mailing Address333 Borthwick Ave Ste 301Portsmouth, NH 03801-7128 · (603) 431-5858 · Fax (603) 431-5818
Phone(603) 431-5858
Fax(603) 431-5818
Sole ProprietorNo
Enumeration DateNovember 14, 2006
Last NPPES UpdateJanuary 9, 20192 updates tracked since enumeration
✔ NPI 1235201419 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyNurse Practitioner · Adult HealthPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LA2200X
License✔ Licensed in NH · 027358
Also ListedNurse PractitionerTaxonomy 363L00000X · License 027358 (NH)
333 BORTHWICK AVE STE 301, Portsmouth, NH 03801
Open in Google Maps ↗

Other Identifiers 1

Medicaid3077765NH

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Mrs. Diane M Langlois Arnp is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Diane Langlois reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

The Knee Hip & Shoulder Center
Same address
Orthopaedic Surgery
333 BORTHWICK AVE
Portsmouth, NH 03801
  • Reassigned Medicare billing, New Hampshire enrollment
  • 4 clinicians in this Medicare group
NPI 1053326868 (603) 431-5858

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 03801 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$89.14 typical visit price
range $57.75 – $174.26
Typical copayment $22.28 (range $14.43 – $43.56)
Most-billed visit code 99203
Established Patient
$101.54 typical visit price
range $18.70 – $142.15
Typical copayment $25.38 (range $4.67 – $35.53)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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.

63.87/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality60.7
Improvement Activities40
Cost31.97

Other Providers at the Same Location NPPES

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

PACE INC.
Exclusive Provider Organization
333 BORTHWICK AVE STE 301
PORTSMOUTH, NH 03801
Rockingham County (603) 969-6465

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 Diane Langlois's NPI number?

The NPI number for Diane Langlois is 1235201419. It was assigned to this individual provider in the NPPES registry on November 14, 2006.

Where is Diane Langlois located?

Diane Langlois practices at 333 Borthwick Ave Ste 301, Portsmouth, NH 03801. The listed phone number is (603) 431-5858.

What is Diane Langlois's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Adult Health, with taxonomy code 363LA2200X.

Is Diane Langlois enrolled in Medicare?

Yes. Diane Langlois is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Diane Langlois's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Diane Langlois reassigns Medicare benefits to The Knee Hip & Shoulder Center (Portsmouth, NH). 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 Diane Langlois'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 Diane Langlois was last updated on January 9, 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.