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Newly Listed Provider — this NPI profile has been added to the NPI registry within the last 90 days.

MARY CATHERINE LAVALLEE
NPI 1932028834
Specialist in Merrimack, NH

Active since July 14, 2026
583 DANIEL WEBSTER HWY STE B, MERRIMACK, NH 03054(603) 541-7958 Get Directions Write a Review

NPPES record added: July 15, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Mary Catherine Lavallee NPPES

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

MARY CATHERINE LAVALLEE (NPI 1932028834) is an individual specialist in Merrimack, New Hampshire and active in the NPI registry since July 2026.

NPPES Registry Identity

NPI1932028834
Entity TypeIndividualFemale
Primary Taxonomy174400000X
Provider Legal NameMARY CATHERINE LAVALLEE
Location Address583 DANIEL WEBSTER HWY STE BMerrimack, NH 03054-3578
Mailing Address6 Whitewater DrManchester, NH 03109-4655 · (603) 541-7958
Phone(603) 541-7958
Sole ProprietorYes
Enumeration DateJuly 14, 2026
Last NPPES UpdateJuly 15, 2026
NPPES CertifiedJuly 15, 2026
✔ NPI 1932028834 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySpecialistOther Service Providers
Taxonomy Code174400000X
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.
583 DANIEL WEBSTER HWY STE B, Merrimack, NH 03054
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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

Other Providers at the Same Location NPPES 20

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

KAELYNN WEBBER
Behavior Technician
583 DANIEL WEBSTER HWY STE B
MERRIMACK, NH 03054
Hillsborough County (603) 541-7958
TASHARA MATTEUZZI
Behavior Technician
583 DANIEL WEBSTER HWY STE B
MERRIMACK, NH 03054
Hillsborough County (603) 541-7958
CHRISTINA PHILBRICK
Behavior Technician
583 DANIEL WEBSTER HWY STE B
MERRIMACK, NH 03054
Hillsborough County (603) 541-7958
JAESON SCOTT
Behavior Technician
583 DANIEL WEBSTER HWY STE B
MERRIMACK, NH 03054
Hillsborough County (603) 541-7958
JESSICA JUCHNOWSKI M.S., BCBA
Behavior Analyst
583 DANIEL WEBSTER HWY STE B
MERRIMACK, NH 03054
Hillsborough County (603) 541-7958
CHRISTINA LEE EICHHORN
Behavior Technician
583 DANIEL WEBSTER HWY STE B
MERRIMACK, NH 03054
Hillsborough County (603) 541-7958
CONNOR LAWRENCE
Behavior Technician
583 DANIEL WEBSTER HWY STE B
MERRIMACK, NH 03054
Hillsborough County (603) 541-7958
NEXTSTEP BEHAVIORAL SERVICES
Behavior Analyst
583 DANIEL WEBSTER HWY STE B
MERRIMACK, NH 03054
Hillsborough County (603) 541-7958

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 Mary Catherine Lavallee's NPI number?

The NPI number for Mary Catherine Lavallee is 1932028834. It was assigned to this individual provider in the NPPES registry on July 14, 2026.

Where is Mary Catherine Lavallee located?

Mary Catherine Lavallee practices at 583 Daniel Webster Hwy Ste B, Merrimack, NH 03054. The listed phone number is (603) 541-7958.

What is Mary Catherine Lavallee's specialty?

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

When was this NPI record last updated?

The NPPES record for Mary Catherine Lavallee was last updated on July 15, 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.