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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Peter Pfeffer, DC, L. ACP

Chiropractor in Alexandria, MN · enumerated 2006 · practices at Pfeffer Chiropractic and Concussion Clinic PA.

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

National Provider Identifier

1851489850

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Registry record

Entity type Individual (Type 1)
Name Dr. Peter Pfeffer
Credential DC, L. ACP
Sex Male
Practice address 108 15th Ave E, Alexandria, MN, 56308
Phone (320) 762-2350
Fax (320) 762-2379
Enumeration date Oct 11, 2006
Last updated in NPPES May 6, 2019

Taxonomy & licenses

171100000X Acupuncturist Other Service Providers · License 003011 (MN) Secondary
111N00000X Chiropractor Chiropractic Providers · License 003011 (MN) Primary
DC · Doctor of Chiropractic: A licensed chiropractor focusing on musculoskeletal and nervous system disorders. About the DC credential

Other identifiers

Identifier Type State Issuer
41-1824263 Other MN FEDERAL TAX ID
897028900 Medicaid MN -

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.

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Frequently asked questions

How do I verify Peter Pfeffer's NPI record?
Cross-check NPI 1851489850 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1851489850 active?
Yes, as of the latest NPPES snapshot, NPI 1851489850 is active (record last updated 2019-05-06).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-05-06.