Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Hugh E Hallmark, MD

Hospitalist Physician in Castle Rock, CO · enumerated 2005.

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

National Provider Identifier

1154317006

Verified

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Registry record

Entity type Individual (Type 1)

Name Hugh E Hallmark

Credential MD

Sex Male

Practice address 2350 Meadows Blvd, Castle Rock, CO, 80109

Phone (720) 455-3879

Fax (720) 455-0665

Enumeration date Sep 26, 2005

Last updated in NPPES Jul 15, 2014

Taxonomy & licenses

208M00000X Hospitalist Physician Allopathic & Osteopathic Physicians · License 26501 (CO) 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
01265016	Medicaid	CO	-
023777	Other	CO	KAISER COMMERCIAL NUMBER

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

What is the NPI number for Hugh Hallmark?

The National Provider Identifier (NPI) for Hugh Hallmark is 1154317006, a Type 1 (individual) record in the CMS NPPES registry.

Where does Hugh Hallmark practice?

The practice location on file with NPPES is in Castle Rock, CO. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-07-15.