Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. Thomas Neil Chisholm, M.D.

Family Medicine Physician in Denver, CO · enumerated 2005.

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

National Provider Identifier

1306846688

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Registry record

Entity type Individual (Type 1)

Name Mr. Thomas Neil Chisholm

Credential M.D.

Sex Male

Practice address 3540 S Poplar St, Suite 200, Denver, CO, 80237

Phone (303) 226-0013

Fax (303) 757-6148

Enumeration date Jul 28, 2005

Last updated in NPPES Feb 20, 2008

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 25364 (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
P00064924	Other	CO	MEDICARE RAIL ROAD ID
01253640	Medicaid	CO	-
29599	Other	CO	ANTHEM BC/BS PROVIDER ID
4137337	Other	CO	AETNA HMO PROVIDER ID
870689258002	Other	CO	ROCKY MOUNTAIN HMO ID
870689258002	Other	CO	PACIFICARE HMO ID

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 Thomas Chisholm's NPI record?

Cross-check NPI 1306846688 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1306846688 active?

Yes, as of the latest NPPES snapshot, NPI 1306846688 is active (record last updated 2008-02-20).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-02-20.