NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Darwin Dean Peterson, D.O.

Surgery Physician in Iowa City, IA · enumerated 2006.

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

National Provider Identifier

1043270556

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Dr. Darwin Dean Peterson
Credential D.O.
Sex Male
Practice address 540 E Jefferson St, Suite 205, Iowa City, IA, 52245
Phone (319) 688-7880
Fax (319) 688-7881
Enumeration date Mar 27, 2006
Last updated in NPPES Jun 24, 2015

Taxonomy & licenses

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License 02331 (IA) Primary
DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO credential

Other identifiers

Identifier Type State Issuer
020047262 Other IA MEDICARE RR
0210807 Medicaid IA -
19971 Other IA BLUE CROSS #

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

How do I verify Darwin Peterson's NPI record?
Cross-check NPI 1043270556 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1043270556 active?
Yes, as of the latest NPPES snapshot, NPI 1043270556 is active (record last updated 2015-06-24).

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-06-24.