Dr. Michael James Ruff, DDS

Dr. Michael James Ruff is a General Practice Dentistry provider (Dentist) practicing in Windsor, CO, registered in the NPPES registry with NPI 1740274455 since 2005. The credential DDS stands for Doctor of Dental Surgery.

✓ Active NPI ✓ Valid NPI checksum Sole proprietor

NPI	1740274455
Entity type	Individual (Type 1)
Name	Dr. Michael James Ruff
Credential	DDS
Sex	Male
Practice address	Windsor, CO, 80528
Phone	9702264098
Fax	9702264971
Enumeration date	2005-09-08
Last updated in NPPES	2008-09-30

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

Taxonomy & licenses

Taxonomy code	Specialty	Primary	License	State
1223G0001X	General Practice Dentistry	Primary	8703	CO

DDS — Doctor of Dental Surgery: A licensed dentist; DDS and DMD are equivalent dental degrees. About the DDS credential

Copy-ready billing details

Provider: Michael Ruff, DDS
NPI: 1740274455
Taxonomy: 1223G0001X (General Practice Dentistry)
Address: Windsor, CO, 80528

Other providers at this practice address

NPI	Name	Type	Specialty	Location
1235110602	Anthony Doft	Individual	Family Medicine Physician	Windsor, CO
1639469307	Big Thompson Medical Group Inc.	Organization	Multi-Specialty Clinic/Center	Windsor, CO
1295288652	Windsor Audiology LLC	Organization	Audiologist	Windsor, CO
1821510520	Shawna Beasley	Individual	Audiologist	Windsor, CO
1871279133	Justine Hoffman	Individual	Audiologist	Windsor, CO

Verify this record

Cross-check NPI 1740274455 against the authoritative CMS record: view Dr. Michael James Ruff on the official NPPES registry .

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 or validate an NPI number.

Frequently asked questions

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.

What specialty is Michael Ruff?

Michael Ruff is registered in NPPES with the primary taxonomy of General Practice Dentistry. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Source: CMS NPPES (public data). Snapshot 2026-07-10. Provider record last updated 2008-09-30.