Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Allison Kay Nitsch, MD

Internal Medicine Physician in Denver, CO · enumerated 2011.

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

National Provider Identifier

1831488790

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Registry record

Entity type Individual (Type 1)

Name Dr. Allison Kay Nitsch

Credential MD

Sex Female

Practice address 777 Bannock St, Denver, CO, 80204

Phone (303) 602-3810

Fax (303) 602-3811

Enumeration date Mar 31, 2011

Last updated in NPPES Jun 4, 2024

Taxonomy & licenses

208M00000X Hospitalist Physician Allopathic & Osteopathic Physicians · License DR.0053067 (CO) Secondary

390200000X Student in an Organized Health Care Education/Training Program Student, Health Care Secondary

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 53067 (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
79304001	Medicaid	CO	-
027137	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.

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Frequently asked questions

How do I verify Allison Nitsch's NPI record?

Cross-check NPI 1831488790 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1831488790 active?

Yes, as of the latest NPPES snapshot, NPI 1831488790 is active (record last updated 2024-06-04).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-06-04.