1. Home
  2. Directory
  3. Colorado
  4. Pueblo
  5. Dentist
  6. NPI Profile

GREGORY N DAY DDS ORAL SURGURY PC
NPI 1528237641
Dentist - Oral and Maxillofacial Surgery in Pueblo, CO

Active since February 22, 2008
3902 SANDLEWOOD LN, SUITE 110, PUEBLO, CO 81005(719) 561-2440(719) 561-0612 Get Directions Write a Review

NPPES record last updated: February 29, 2008. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Gregory N Day Dds Oral Surgury Pc NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

GREGORY N DAY DDS ORAL SURGURY PC (NPI 1528237641) is a healthcare organization registered as an oral and maxillofacial surgery in Pueblo, Colorado and active in the NPI registry since February 2008. The organization lists Gregory Nelson Day, Owner/oral Surgeon, as its authorized official.

NPPES Registry Identity

NPI1528237641
Entity TypeOrganization
Primary Taxonomy1223S0112X
Legal Business NameGREGORY N DAY DDS ORAL SURGURY PC
Location Address3902 SANDLEWOOD LN, SUITE 110Pueblo, CO 81005-7501
Mailing Address3902 Sandlewood Ln, Suite 110Pueblo, CO 81005-7501 · (719) 561-2440 · Fax (719) 561-0612
Phone(719) 561-2440
Fax(719) 561-0612
Organization SubpartNo
Authorized OfficialGregory Nelson DayOwner/oral Surgeon · (719) 561-2440
Enumeration DateFebruary 22, 2008
Last NPPES UpdateFebruary 29, 2008
✔ NPI 1528237641 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyDentist · Oral and Maxillofacial SurgeryDental Providers
Taxonomy Code1223S0112X
License✔ Licensed in CO · 6563
Definition
An oral and maxillofacial surgery dentist specialized in the diagnosis, surgical and adjunctive treatment of diseases, injuries and defects involving both the functional and esthetic aspects of the hard and soft tissues of the oral and maxillofacial region.
3902 SANDLEWOOD LN, Pueblo, CO 81005
Open in Google Maps ↗

Other Identifiers 2

Medicare UPINU45469CO
Medicaid08328544CO

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment, revalidation and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Gregory N Day Dds Oral Surgury Pc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Medicare Revalidation Due Date

Revalidation due by December 31, 2026

Medicare-enrolled providers and suppliers confirm their enrollment information with CMS on a set cycle, every 5 years for most and every 3 years for medical equipment suppliers. CMS sets the due date for each enrollment.

StateEnrollment IDDue date
StateColoradoEnrollment IDO20140804001668Non-DME Part B · Clinic/Group PracticeDue dateDecember 31, 2026
Source: CMS Revalidation Due Date List, October 2026 release.

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 1 clinician reassigns Medicare billing to Gregory N Day DDS Oral Surgury PC, which bills Medicare for the services this clinician delivers.

Clinician (1)

Gregory Day, D.D.S.
Oral Surgery
NPI 1780749176
3902 SANDLEWOOD LN
Pueblo, CO 81005
(719) 561-2440
✔ PECOSSame address

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Gregory N Day Dds Oral Surgury PC's NPI number?

The NPI number for Gregory N Day Dds Oral Surgury PC is 1528237641. It was assigned to this organization in the NPPES registry on February 22, 2008.

Where is Gregory N Day Dds Oral Surgury PC located?

Gregory N Day Dds Oral Surgury PC is located at 3902 Sandlewood Ln Suite 110, Pueblo, CO 81005. The listed phone number is (719) 561-2440.

What is Gregory N Day Dds Oral Surgury PC's specialty?

The primary specialty registered for this NPI is Dentist, specializing in Oral and Maxillofacial Surgery, with taxonomy code 1223S0112X.

Is Gregory N Day Dds Oral Surgury PC enrolled in Medicare?

Yes. Gregory N Day Dds Oral Surgury PC is registered in the Medicare PECOS enrollment system.

When is Gregory N Day Dds Oral Surgury PC's Medicare revalidation due?

According to the CMS Revalidation Due Date List (October 2026 release), the Medicare Non-DME Part B enrollment for this organization (Colorado, Clinic/Group Practice) is due for revalidation by December 31, 2026. Medicare providers and suppliers revalidate their enrollment every 5 years, and medical equipment suppliers every 3 years. Confirm current requirements with your Medicare Administrative Contractor.

How many clinicians bill Medicare through Gregory N Day Dds Oral Surgury PC?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Oral Surgery) reassigns their Medicare billing to Gregory N Day Dds Oral Surgury PC. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Gregory N Day Dds Oral Surgury PC was last updated on February 29, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.