Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Gregg W Calderwood, M.D.

Obstetrics & Gynecology Physician in West Burlington, IA · enumerated 2006.

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

National Provider Identifier

1730140898

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Registry record

Entity type Individual (Type 1)

Name Gregg W Calderwood

Credential M.D.

Sex Male

Practice address 1223 S Gear Ave, Ste 208, West Burlington, IA, 52655

Phone (319) 752-4541

Fax (319) 752-2972

Enumeration date Mar 29, 2006

Last updated in NPPES Nov 6, 2012

Taxonomy & licenses

207V00000X Obstetrics & Gynecology Physician Allopathic & Osteopathic Physicians · License 22096 (IA) 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
1730140898	Other	IA	WELLMARK
1730140898	Medicaid	IA	-

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 Gregg Calderwood's NPI record?

Cross-check NPI 1730140898 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1730140898 active?

Yes, as of the latest NPPES snapshot, NPI 1730140898 is active (record last updated 2012-11-06).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-11-06.