Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. Matthew David Sommer, CRNP

Family Nurse Practitioner in Aberdeen Proving Ground, MD · enumerated 2006.

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

National Provider Identifier

1437137841

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Registry record

Entity type Individual (Type 1)

Name Mr. Matthew David Sommer

Credential CRNP

Sex Male

Practice address Kirk Us Army Health Clinic, 6455 Machine Street, Aberdeen Proving Ground, MD, 21005

Phone (410) 436-3001

Fax (410) 436-8409

Enumeration date Jan 5, 2006

Last updated in NPPES Aug 29, 2023

Taxonomy & licenses

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License R137599 (MD) Primary

Other identifiers

Identifier	Type	State	Issuer
699304400	Medicaid	MD	-

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 1437137841 active?

Yes, as of the latest NPPES snapshot, NPI 1437137841 is active (record last updated 2023-08-29).

How do I verify Matthew Sommer's NPI record?

Cross-check NPI 1437137841 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-08-29.