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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Robert O. Gross, D.O.

General Practice Physician in Clear Lake, IA · enumerated 2006.

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

National Provider Identifier

1033200795

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Registry record

Entity type Individual (Type 1)
Name Dr. Robert O. Gross
Credential D.O.
Sex Male
Practice address Clear Lake, IA, 50428
Phone (641) 357-2141
Fax (641) 357-4315
Enumeration date Sep 27, 2006
Last updated in NPPES Jul 8, 2007

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

208D00000X General Practice Physician Allopathic & Osteopathic Physicians · License 01767 (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
16725 Other IA WELLMARK

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

Where does Robert Gross practice?
The practice location on file with NPPES is in Clear Lake, IA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Robert Gross?
The National Provider Identifier (NPI) for Robert Gross is 1033200795, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.