Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

William G Rainer Jr PC

Specialist in Cortez, CO · enumerated 2008 · authorized official William Rainer, President.

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

National Provider Identifier

1912169368

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Registry record

Entity type Organization (Type 2)

Legal business name William G Rainer Jr PC

Practice address 106 E 1st St, Cortez, CO, 81321

Phone (970) 565-4500

Fax (970) 565-0862

Enumeration date Jun 26, 2008

Last updated in NPPES Mar 31, 2016

Taxonomy & classification

174400000X Specialist Other Service Providers · License 28307 (CO) Primary

Authorized official

Name William Rainer

Title President

Phone (970) 565-4500

Other identifiers

Identifier	Type	State	Issuer
27935221	Medicaid	CO	-

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

Where is William G Rainer Jr PC located?

The practice location on file with NPPES is in Cortez, CO.

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2016-03-31. Verify at npiregistry.cms.hhs.gov.

Providers at this address

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William Rainer Surgery Physician · Cortez, CO NPI 1821067190 Ronda Weir Family Nurse Practitioner · Cortez, CO NPI 1457010274 Weir Hometown Healthcare LLC Family Nurse Practitioner · Cortez, CO NPI 1508570219

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-03-31.