Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Stephen R Peters, MD

Diagnostic Radiology Physician in Aberdeen, SD · enumerated 2006.

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

National Provider Identifier

1861438178

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Registry record

Entity type Individual (Type 1)

Name Stephen R Peters

Credential MD

Sex Male

Practice address 305 S State St, Aberdeen, SD, 57401

Phone (605) 622-5540

Fax (605) 622-5217

Enumeration date Jun 22, 2006

Last updated in NPPES Nov 16, 2011

Taxonomy & licenses

2085R0202X Diagnostic Radiology Physician Allopathic & Osteopathic Physicians · License 4139 (SD) 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
4139	Other	SD	SD MEDICAL LICENSE

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 Stephen Peters's NPI record?

Cross-check NPI 1861438178 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1861438178 active?

Yes, as of the latest NPPES snapshot, NPI 1861438178 is active (record last updated 2011-11-16).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-11-16.