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Dr. Cristen J Mazzella, MD

Internal Medicine Physician in Denver, CO · enumerated 2006.

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

National Provider Identifier

1790715332

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Registry record

Entity type Individual (Type 1)
Name Dr. Cristen J Mazzella
Credential MD
Sex Female
Practice address 10400 E Alameda Ave, Denver, CO, 80247
Phone (303) 338-4545
Enumeration date Jul 3, 2006
Last updated in NPPES Jun 2, 2021

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 01062341A (IN) Secondary
207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 47319 (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
55608736 Medicaid CO -
024111 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

What specialty is Cristen Mazzella?
Cristen Mazzella is registered in NPPES with the primary taxonomy of Internal Medicine Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-06-02.