Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Peter J Dirksmeier, M.D.

Orthopaedic Surgery of the Spine Physician in Somersworth, NH · enumerated 2006.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1831124361

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Registry record

Entity type Individual (Type 1)

Name Dr. Peter J Dirksmeier

Credential M.D.

Sex Male

Practice address 7 Marsh Brook Dr, Suite 100, Somersworth, NH, 03878

Phone (603) 742-2007

Fax (603) 749-4605

Enumeration date Jul 12, 2006

Last updated in NPPES Sep 6, 2018

Taxonomy & licenses

207X00000X Orthopaedic Surgery Physician Allopathic & Osteopathic Physicians · License 11150 (NH) Secondary

207XS0117X Orthopaedic Surgery of the Spine Physician Allopathic & Osteopathic Physicians · License 11150 (NH) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
3079294	Medicaid	NH	-

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1831124361 active?

Yes, as of the latest NPPES snapshot, NPI 1831124361 is active (record last updated 2018-09-06).

How do I verify Peter Dirksmeier's NPI record?

Cross-check NPI 1831124361 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-09-06.