Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

NATHANIEL BROWN
NPI 1821821919
Nurse Practitioner - Psychiatric/Mental Health in Concord, NH

Active since August 23, 2024PECOS Enrolled
10 FERRY ST STE 313, CONCORD, NH 03301(860) 788-6404 Get Directions Write a Review

NPPES record last updated: November 5, 2026. Verified against the NPPES registry weekly; last sync: November 08, 2026.

Record update history: Nov 5, 2026, Sep 3, 2024, Aug 23, 2024 (3 updates tracked since 2024).

About Nathaniel Brown NPPES

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

NATHANIEL BROWN (NPI 1821821919) is an individual psychiatric/mental health provider in Concord, New Hampshire, licensed in New Hampshire (078188-23) and active in the NPI registry since August 2024. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1821821919
Entity TypeIndividualMale
Primary Taxonomy363LP0808X
Provider Legal NameNATHANIEL BROWN
Location Address10 FERRY ST STE 313Concord, NH 03301-5004
Mailing AddressPo Box 1595Middletown, CT 06457-8095
Sole ProprietorNo
Enumeration DateAugust 23, 2024
Last NPPES UpdateNovember 5, 20263 updates tracked since enumeration
NPPES CertifiedNovember 5, 2026
✔ NPI 1821821919 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Practitioner · Psychiatric/Mental HealthPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LP0808X
License✔ Licensed in NH · 078188-23
10 FERRY ST STE 313, Concord, NH 03301

Accepted Insurance

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Nathaniel Brown 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 Nathaniel Brown reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Orthopaedic Surgery
458 OLD STREET RD, SUITE 200
Peterborough, NH 03458
  • Reassigned Medicare billing, New Hampshire enrollment
  • Medicare enrollment name: Monadnock Community Hospital
  • Also billed through NPI 1457304149 (New Hampshire)
  • 68 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 03301 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.

Other Providers at the Same Location NPPES 10

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

Nurse Practitioner (Gerontology)
10 FERRY ST STE 313
CONCORD, NH 03301
Community/Behavioral Health
10 FERRY ST STE 313
CONCORD, NH 03301
Nurse Practitioner (Family)
10 FERRY ST STE 313
CONCORD, NH 03301
Social Worker (Clinical)
10 FERRY ST STE 313
CONCORD, NH 03301
General Practice
10 FERRY ST STE 313
CONCORD, NH 03301
Psychologist (Clinical)
10 FERRY ST STE 313
CONCORD, NH 03301
Psychologist (Clinical)
10 FERRY ST STE 313, MEDOPTIONS OF NEW HAMPSHIRE, LLC.
CONCORD, NH 03301
Counselor (Mental Health)
10 FERRY ST STE 313
CONCORD, NH 03301

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 Nathaniel Brown's NPI number?

The NPI number for Nathaniel Brown is 1821821919. It was assigned to this individual provider in the NPPES registry on August 23, 2024.

Where is Nathaniel Brown located?

Nathaniel Brown practices at 10 Ferry St Ste 313, Concord, NH 03301. The listed phone number is (860) 788-6404.

What is Nathaniel Brown's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Psychiatric/Mental Health, with taxonomy code 363LP0808X.

Is Nathaniel Brown enrolled in Medicare?

Yes. Nathaniel Brown is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Nathaniel Brown's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Nathaniel Brown reassigns Medicare benefits to Monadnock Orthopaedic Associates (Peterborough, 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 Nathaniel Brown's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Nathaniel Brown accept?

Health plans from Anthem Blue Cross and Blue Shield and Harvard Pilgrim Health Care list Nathaniel Brown 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 Nathaniel Brown was last updated on November 5, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 days 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.