Gregory Nelson Day, D.D.S.
Oral and Maxillofacial Surgery (Dentist) · Pueblo, CO
Gregory Nelson Day, D.D.S. is an oral and maxillofacial surgery (dentist) with a practice address in Pueblo, Colorado, and NPI 1780749176, issued on Dec 26, 2006. Check the license (Colorado 6563, as entered in NPPES) with the Colorado board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Gregory Nelson Day
- Credential
- D.D.S.
- Primary taxonomy
- Oral and Maxillofacial Surgery (Dentist) 1223S0112X
- License number
- 6563 CO
Self-reported in NPPES; status is on the state search - Practice location
- 3902 Sandlewood LN, Pueblo, CO 81005
- Phone
- (719) 561-2440
- Enumerated
- Dec 26, 2006
- Record last updated
- Jul 9, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (719) 561-0612
- Medicaid ID
- 02065639 CO
- Entity
- Type 1 · individual
8 nearest oral and maxillofacial surgery (dentist) records → All 182 in Colorado → Look up another NPI →
Verify Gregory Nelson Day in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Colorado board licenses this profession
Search for license 6563Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
25% fewer Medicare Part D claims than the average oral and maxillofacial surgery (dentist) in 2024
304 Medicare Part D claims for 147 beneficiaries, against an average of 406 among the 5,870 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims. 92 claims were for opioids.
Most prescribed
- Amoxicillin118 claims
- Hydrocodone-Acetaminophen80 claims
- Chlorhexidine Gluconate30 claims
- Clindamycin Hcl18 claims
- Azithromycin14 claims
- Ciprofloxacin Hcl13 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Gregory Nelson Day among 182 oral and maxillofacial surgery (dentist) records in Colorado
Gregory Nelson Day, D.D.S. is one of 182 oral and maxillofacial surgery (dentist) records with a practice address in Colorado. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 12% of them.
- NPI issued2006 · 12% of these records are older, 58% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileNo · 9% of these records are
- Record last updated2007 · 65% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1223S0112X and a Colorado practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Oral and Maxillofacial Surgery (Dentist) providers in Colorado
There are 182 oral and maxillofacial surgery (dentist) records in Colorado.
All 182 in Colorado → Every provider in Pueblo → Oral and Maxillofacial Surgery (Dentist) nationwide →
The 8 oral and maxillofacial surgery (dentist) records with the nearest ZIP codes
- Joseph Zufall, DDSPueblo, CO 810041013051689
- Wayne Payne, D.D.S.Pueblo, CO 810031659311678
- Brandon Payne, D.D.S., M.D.Pueblo, CO 810081285772301
- Eric Ringer, DDSPueblo, CO 810081952712069
- Rhett Quist, DDSColorado Springs, CO 809231942351549
- Justin Bley, D.M.D.Colorado Springs, CO 809201699881185
- Blake Chaney, DDSColorado Springs, CO 809201194216887
- Harry Cole, D.D.S.Colorado Springs, CO 809201366413361
Common questions
What is Gregory Nelson Day, D.D.S.'s NPI number?
Gregory Nelson Day, D.D.S.'s National Provider Identifier (NPI) is 1780749176, issued on Dec 26, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Gregory Nelson Day, D.D.S. located?
The NPPES record lists a practice address at 3902 Sandlewood LN, Pueblo, CO, 81005. Phone: (719) 561-2440. Providers update this record themselves, so call before visiting.
How can I verify Gregory Nelson Day, D.D.S.'s license?
NPPES lists Colorado license number 6563, as entered by the provider. Search the Colorado board that licenses this profession; the NPPES record confirms identity only.
How much does Gregory Nelson Day, D.D.S. prescribe under Medicare Part D?
In 2024, Gregory Nelson Day, D.D.S. had 304 Medicare Part D claims for 147 beneficiaries; the average among oral and maxillofacial surgery (dentist) prescribers was 406. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.