Dr. Jason Michael Grinter, DDS

Dr. Jason Michael Grinter is a Dentist provider (Dentist) practicing in Rockford, IL, registered in the NPPES registry with NPI 1255401899 since 2006. The credential DDS stands for Doctor of Dental Surgery. Practices at Milestone, Inc. (listed at the same practice address in NPPES).

✓ Active NPI ✓ Valid NPI checksum Sole proprietor

NPI	1255401899
Entity type	Individual (Type 1)
Name	Dr. Jason Michael Grinter
Credential	DDS
Sex	Male
Practice address	Rockford, IL, 61108
Phone	8154848678
Enumeration date	2006-11-09
Last updated in NPPES	2007-07-09

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

Taxonomy & licenses

Taxonomy code	Specialty	Primary	License	State
122300000X	Dentist	Primary	—	IL

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

Copy-ready billing details

Provider: Jason Grinter, DDS
NPI: 1255401899
Taxonomy: 122300000X (Dentist)
Address: Rockford, IL, 61108

Other providers at this practice address

NPI	Name	Type	Specialty	Location
1801948443	Ksenia Andronova	Individual	General Practice Dentistry	Rockford, IL
1689848798	Milestone, Inc.	Organization	Dentist	Rockford, IL

Verify this record

Cross-check NPI 1255401899 against the authoritative CMS record: view Dr. Jason Michael Grinter 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 Jason Grinter?

Jason Grinter is registered in NPPES with the primary taxonomy of Dentist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2007-07-09.