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

DR. WILLIAM THOMAS MAUTZ PHD
NPI 1841244522
Clinical Neuropsychologist in Portsmouth, NH

Q: What is William Mautz's NPI number?

The NPI number for William Mautz is 1841244522. It was assigned to this individual provider in the NPPES registry on May 19, 2006.

Q: What is William Mautz's specialty?

The primary specialty registered for this NPI is Clinical Neuropsychologist with taxonomy code 103G00000X.

Q: When was this NPI record last updated?

The NPPES record for William Mautz was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 28 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.

Active since May 19, 2006

20 LADD ST, 4TH FLOOR, PORTSMOUTH, NH 03801(603) 334-3311(603) 433-6341 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

On this page

About Dr. William Thomas Mautz Phd NPPES

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

DR. WILLIAM THOMAS MAUTZ PHD (NPI 1841244522) is an individual clinical neuropsychologist in Portsmouth, New Hampshire, licensed in New Hampshire (963) and active in the NPI registry since May 2006.

NPPES Registry Identity

NPI1841244522

Entity TypeIndividualMale

Primary Taxonomy103G00000X

Provider Legal NameDR. WILLIAM THOMAS MAUTZCredential: PHD

Location Address20 LADD ST, 4TH FLOORPortsmouth, NH 03801-4089

Mailing Address20 Ladd St, 4th FloorPortsmouth, NH 03801-4089 · (603) 334-3311 · Fax (603) 433-6341

Phone(603) 334-3311

Fax(603) 433-6341

Sole ProprietorNo

Enumeration DateMay 19, 2006

Last NPPES UpdateJuly 13, 2026

✔ NPI 1841244522 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyClinical NeuropsychologistBehavioral Health & Social Service Providers

Taxonomy Code103G00000X

Licenses✔ Licensed in NH · 963✔ Licensed in MA · 7826

Definition

A clinical psychologist who applies principles of assessment and intervention based upon the scientific study of human behavior as it relates to normal and abnormal functioning of the central nervous system. The specialty is dedicated to enhancing the understanding of brain-behavior relationships and the application of such knowledge to human problems.

20 LADD ST, Portsmouth, NH 03801

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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, Harvard Pilgrim Health Care.Insurance ›

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.

MS. SANDRA MEYER LORELL RN, MSW

Social Worker

20 LADD ST, 4TH FLOOR
PORTSMOUTH, NH 03801

Rockingham County (603) 334-3311

KIRSTEN SUE LEE L.M.F.T.

Marriage & Family Therapist

20 LADD ST, SUITE 410
PORTSMOUTH, NH 03801

Rockingham County (603) 431-8800

MS. SHAWN A FINNEGAN MSW, LICSW

Counselor (Mental Health)

20 LADD ST
PORTSMOUTH, NH 03801

Rockingham County (603) 834-3236

MS. C. LISA NORRIS ARNP

Clinical Nurse Specialist (Psychiatric/Mental Health, Adult)

20 LADD ST
PORTSMOUTH, NH 03801

Rockingham County (603) 430-8900

SANDRA K YARNE, PH.D., PLLC

Psychologist (Clinical)

20 LADD ST, SUITE 406
PORTSMOUTH, NH 03801

Rockingham County (603) 436-2424

MARY BETH BLOSER LICSW

Social Worker (Clinical)

20 LADD ST
PORTSMOUTH, NH 03801

Rockingham County (603) 828-3216

MS. MARCIE KALEN LISTER MSW

Counselor (Mental Health)

20 LADD ST, 4TH FLOOR
PORTSMOUTH, NH 03801

Rockingham County (603) 433-2464

THE BRICHEL CENTER, PROFESSIONAL ASSOCIATION

Social Worker (Clinical)

20 LADD ST, 4TH FLOOR
PORTSMOUTH, NH 03801

Rockingham County (603) 334-3311

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 William Mautz's NPI number?

The NPI number for William Mautz is 1841244522. It was assigned to this individual provider in the NPPES registry on May 19, 2006.

Where is William Mautz located?

William Mautz practices at 20 Ladd St 4th Floor, Portsmouth, NH 03801. The listed phone number is (603) 334-3311.

What is William Mautz's specialty?

The primary specialty registered for this NPI is Clinical Neuropsychologist with taxonomy code 103G00000X.

What insurance does William Mautz accept?

Health plans from Anthem Blue Cross and Blue Shield and Harvard Pilgrim Health Care list William Mautz 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 William Mautz was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 28 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.