Matthew Allan Nielsen, DDS
- Hospital affiliations
- 1
- Industry payments
- $23
- Medical group
- 1
- State license
- 1
- Year NPI issued
- 2008
- Practice address
- 975 Sereno Dr, Vallejo, CA 94589
- Practice phone
- Call (707) 651-1000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Matthew Nielsen'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.
Matthew Allan Nielsen is a dentist in Vallejo, California
Matthew Nielsen practices at Vallejo Medical Center in Vallejo, California, part of Kaiser Permanente.
Matthew Nielsen's NPI, 1215184528, was assigned on August 19, 2008. Matthew Nielsen holds Oregon license D9123.
- NPI
- 1215184528NPI Registry (opens in a new tab)
- NPI enumeration date
- August 19, 2008
- NPI status
- Active
- Practice phone
- (707) 651-1000
- 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
Matthew Allan Nielsen practices at Vallejo Medical Center in Vallejo, California
Matthew Nielsen's primary practice is Vallejo Medical Center, at 975 Sereno Dr, Vallejo, CA 94589 in Solano County. The practice phone is (707) 651-1000.
- Vallejo Medical Center975 Sereno Dr, Vallejo, CA 94589 · Solano CountyPhone(707) 651-1000
Source: Dmand AI Affiliation Data
Matthew Allan Nielsen is affiliated with 4 sites of care and 1 medical group
Matthew Nielsen's primary practice is Vallejo Medical Center in Vallejo, California, part of Kaiser Permanente. Dmand AI also links Matthew Nielsen to 1 group practice or clinic, 1 home health agency, 1 hospice and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Matthew Allan Nielsen's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Matthew Nielsen practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Vallejo Medical Center | Available with a free account |
| +3 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Kaiser Permanente and 6.2K+ hospitals, with verified contacts in the same login.
Matthew Allan Nielsen is one of 6,282 dentists in California
Dentist is Matthew Nielsen's primary specialty in the NPI Registry, under taxonomy code 122300000X. Matthew Nielsen is licensed in Oregon.
Specialties and state licenses
- Dentist, OregonPrimary
Dentists near Matthew Nielsen
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
Matthew Allan Nielsen's patients have a median age of 54
Across all payers, Dmand AI patient panel data puts Matthew Nielsen's median patient age at 54, with 100% women.
Matthew Nielsen's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 54
Patient panel by sex, all payers
- Women100%
- Men0%
Source: Dmand AI Patient Panel Data
Matthew Allan Nielsen received $23 in industry payments in 2025
CMS Open Payments shows 1 general payment to Matthew Nielsen from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. GC America Inc. paid the most, $23.
Companies that paid Matthew Nielsen 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 Matthew Allan Nielsen'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 |
| 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 Matthew Allan Nielsen
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Matthew Allan Nielsen's NPI number?
Matthew Allan Nielsen's NPI number is 1215184528. It was assigned on August 19, 2008, and it is active in the NPI Registry.
What does Matthew Allan Nielsen specialize in?
Matthew Allan Nielsen is a dentist in Vallejo, California. The primary specialty in the NPI Registry is Dentist (taxonomy code 122300000X).
Where does Matthew Allan Nielsen practice?
Matthew Nielsen practices at 975 Sereno Dr, Vallejo, CA 94589. Matthew Nielsen's primary practice is Vallejo Medical Center in Vallejo, California, part of Kaiser Permanente. Dmand AI also links Matthew Nielsen to 1 group practice or clinic, 1 home health agency, 1 hospice and 1 medical group.
What is Matthew Allan Nielsen's office phone number?
The practice phone on file for Matthew Nielsen is (707) 651-1000.
What is Matthew Allan Nielsen's medical license number?
Matthew Nielsen holds Oregon license D9123.
Which hospitals is Matthew Allan Nielsen affiliated with?
Matthew Nielsen practices at Vallejo Medical Center in Vallejo, California.
Has Matthew Allan Nielsen received payments from drug or device companies?
CMS Open Payments shows $23 in general payments to Matthew Nielsen from 1 company from 2025 to 2025. The largest total came from GC America Inc.
How long has Matthew Allan Nielsen been practicing?
Matthew Nielsen's NPI was assigned in 2008.
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