Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Heather Daryl Crittenden, MD

Internal Medicine Physician in Flagstaff, AZ · enumerated 2005 · practices at Crittstrong Corporation.

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

National Provider Identifier

1467448142

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Registry record

Entity type Individual (Type 1)

Name Heather Daryl Crittenden

Credential MD

Sex Female

Practice address Flagstaff, AZ, 86001

Phone (928) 226-1239

Fax (928) 773-1170

Enumeration date Sep 27, 2005

Last updated in NPPES Mar 15, 2021

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 25588 (AZ) Primary

207RH0002X Hospice and Palliative Medicine (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License 25588 (AZ) Secondary

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
422890	Medicaid	AZ	-

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 Heather Crittenden's NPI record?

Cross-check NPI 1467448142 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1467448142 active?

Yes, as of the latest NPPES snapshot, NPI 1467448142 is active (record last updated 2021-03-15).

Other providers at this practice address

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Crittstrong Corporation Family Medicine Physician · Flagstaff, AZ NPI 1174827539

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-03-15.