Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Michael Gary Sills, M.D.

Diagnostic Radiology Physician in Phoenix, AZ · enumerated 2005.

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

National Provider Identifier

1689664658

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Registry record

Entity type Individual (Type 1)

Name Dr. Michael Gary Sills

Credential M.D.

Sex Male

Practice address 18404 N. Tatum Blvd, Suite 103, Phoenix, AZ, 85032

Phone (602) 485-7491

Fax (623) 780-3752

Enumeration date Oct 21, 2005

Last updated in NPPES Sep 24, 2013

Taxonomy & licenses

2085R0202X Diagnostic Radiology Physician Allopathic & Osteopathic Physicians · License 27492 (AZ) 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
3749	Other	CO	UPI

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

How do I verify Michael Sills's NPI record?

Cross-check NPI 1689664658 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1689664658 active?

Yes, as of the latest NPPES snapshot, NPI 1689664658 is active (record last updated 2013-09-24).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-09-24.