Gregory Walter Greenwood, DMD
- Part D claims, 2024
- 88
- Hospital affiliations
- 2
- Industry payments
- $15
- Medical groups
- 3
- State license
- 1
- Practice address
- 5400 South Rainbow Blvd, Las Vegas, NV 89118
- Practice phone
- Call (702) 853-3000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Gregory Greenwood's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Gregory Walter Greenwood is a dentist in Las Vegas, Nevada
Gregory Greenwood practices at Spring Valley Hospital Medical Center in Las Vegas, Nevada, part of Universal Health Services.
Gregory Greenwood's NPI, 1275729667, was assigned on September 19, 2007. Gregory Greenwood holds Nevada license 5628.
- NPI
- 1275729667NPI Registry (opens in a new tab)
- NPI enumeration date
- September 19, 2007
- NPI status
- Active
- Practice phone
- (702) 853-3000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Gregory Walter Greenwood practices at Spring Valley Hospital Medical Center in Las Vegas, Nevada
Gregory Greenwood's primary practice is Spring Valley Hospital Medical Center, at 5400 South Rainbow Blvd, Las Vegas, NV 89118 in Clark County. The practice phone is (702) 853-3000.
- Spring Valley Hospital Medical Center5400 South Rainbow Blvd, Las Vegas, NV 89118 · Clark CountyPhone(702) 853-3000
Source: Dmand AI Affiliation Data
Gregory Walter Greenwood is affiliated with 6 sites of care and 3 medical groups
Gregory Greenwood's primary practice is Spring Valley Hospital Medical Center in Las Vegas, Nevada, part of Universal Health Services. Dmand AI also links Gregory Greenwood to 1 hospital, 3 group practices and clinics, 3 medical groups and 1 clinical lab, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Gregory Walter Greenwood's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Gregory Greenwood practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Spring Valley Hospital Medical Center | Available with a free account |
| +5 more sites and 3 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Gregory Walter Greenwood is one of 364 dentists in Nevada
Dentist is Gregory Greenwood's primary specialty in the NPI Registry, under taxonomy code 122300000X. Gregory Greenwood is licensed in Nevada.
Specialties and state licenses
- Dentist, NevadaPrimary
Dentists near Gregory Greenwood
Counts of dentists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Gregory Walter Greenwood's patients have a median age of 37
Across all payers, Dmand AI patient panel data puts Gregory Greenwood's median patient age at 37, with 50% women.
Gregory Greenwood's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 37
Patient panel by sex, all payers
- Women50%
- Men50%
Source: Dmand AI Patient Panel Data
Gregory Walter Greenwood wrote 88 Medicare Part D claims in 2024
In 2024, Gregory Greenwood wrote 88 Medicare Part D claims for 33 patients. 98% of them were for generic drugs.
Gregory Greenwood's Part D claims by kind of drug, 2024
- Generic86 claims98%
- Brand-name and other2 claims2%
Drug classes CMS tracks in Gregory Greenwood's Part D claims, 2024
- Opioids16%14 of 88 claims
- Antibiotics33%29 of 88 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
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Gregory Walter Greenwood received $15 in industry payments in 2025
CMS Open Payments shows 1 general payment to Gregory Greenwood from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Align Technology, Inc. paid the most, $15.
Companies that paid Gregory Greenwood the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Gregory Walter Greenwood's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Gregory Walter Greenwood
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Gregory Walter Greenwood's NPI number?
Gregory Walter Greenwood's NPI number is 1275729667. It was assigned on September 19, 2007, and it is active in the NPI Registry.
What does Gregory Walter Greenwood specialize in?
Gregory Walter Greenwood is a dentist in Las Vegas, Nevada. The primary specialty in the NPI Registry is Dentist (taxonomy code 122300000X).
Where does Gregory Walter Greenwood practice?
Gregory Greenwood practices at 5400 South Rainbow Blvd, Las Vegas, NV 89118. Gregory Greenwood's primary practice is Spring Valley Hospital Medical Center in Las Vegas, Nevada, part of Universal Health Services. Dmand AI also links Gregory Greenwood to 1 hospital, 3 group practices and clinics, 3 medical groups and 1 clinical lab.
What is Gregory Walter Greenwood's office phone number?
The practice phone on file for Gregory Greenwood is (702) 853-3000.
What is Gregory Walter Greenwood's medical license number?
Gregory Greenwood holds Nevada license 5628.
Which hospitals is Gregory Walter Greenwood affiliated with?
Gregory Greenwood practices at Spring Valley Hospital Medical Center in Las Vegas, Nevada. Dmand AI links Gregory Greenwood to 1 more hospital.
Has Gregory Walter Greenwood received payments from drug or device companies?
CMS Open Payments shows $15 in general payments to Gregory Greenwood from 1 company from 2025 to 2025. The largest total came from Align Technology, Inc.
How long has Gregory Walter Greenwood been practicing?
Gregory Greenwood's NPI was assigned in 2007.
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