Matthew Aaron Gassen, DDS
- Part D claims, 2024
- 263
- Industry payments
- $119
- Affiliated sites
- 1
- State license
- 1
- Year NPI issued
- 2006
- Practice address
- 1801 Stadium Blvd, Jefferson City, MO 65109-1947
- Practice phone
- Call (573) 634-3050
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Gassen Dentistry
Physician office · Jefferson City, Missouri
Find Matthew Gassen'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 Aaron Gassen is a general practice dentistry in Columbia, Missouri
Matthew Gassen practices at Gassen Dentistry in Jefferson City, Missouri.
Matthew Gassen's NPI, 1619065695, was assigned on October 11, 2006. Matthew Gassen holds Missouri license 2001012606.
- NPI
- 1619065695NPI Registry (opens in a new tab)
- NPI enumeration date
- October 11, 2006
- NPI status
- Active
- Practice phone
- (573) 634-3050
- 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 Aaron Gassen practices in Jefferson City and Columbia
Matthew Gassen's primary practice is Gassen Dentistry, at 1801 Stadium Blvd, Jefferson City, MO 65109-1947. The practice phone is (573) 634-3050. The NPI Registry lists Matthew Gassen's practice address as 300 Portland St, Columbia, MO 65201.
- Gassen DentistryPrimary1801 Stadium Blvd, Jefferson City, MO 65109-1947Phone(573) 634-3050
- NPI Registry address300 Portland St, Columbia, MO 65201 · Boone County
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; and Dmand AI Practice Data
Matthew Aaron Gassen is affiliated with 1 site of care
Matthew Gassen's primary practice is Gassen Dentistry in Jefferson City, Missouri.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Matthew Aaron Gassen's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Matthew Gassen practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Gassen Dentistry | Available with a free account |
Source: Dmand AI Technology Install Data
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Matthew Aaron Gassen is one of 945 general practice dentistrys in Missouri
General practice is Matthew Gassen's primary specialty in the NPI Registry, under taxonomy code 1223G0001X. Matthew Gassen is licensed in Missouri.
Specialties and state licenses
- General practice dentistry, MissouriPrimary
General practice dentistrys near Matthew Gassen
Counts of general practice dentistrys 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 Aaron Gassen's patients have a median age of 75
Across all payers, Dmand AI patient panel data puts Matthew Gassen's median patient age at 75, with 100% women.
Matthew Gassen's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 75
Patient panel by sex, all payers
- Women100%
- Men0%
Source: Dmand AI Patient Panel Data
Matthew Aaron Gassen wrote 263 Medicare Part D claims in 2024
In 2024, Matthew Gassen wrote 263 Medicare Part D claims for 134 patients. 98% of them were for generic drugs.
Matthew Gassen's Part D claims by kind of drug, 2024
- Generic259 claims98%
- Brand-name and other4 claims2%
Drug classes CMS tracks in Matthew Gassen's Part D claims, 2024
- Antibiotics95%250 of 263 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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Matthew Aaron Gassen received $119 in industry payments in 2025
CMS Open Payments shows 5 general payments to Matthew Gassen from 2 drug and device companies in 2025. Food and beverage make up the largest share, 100% of the total. Patterson Companies, Inc. paid the most, $83.
Companies that paid Matthew Gassen 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 Aaron Gassen'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Affiliation DataDmand AI Practice Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation 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 Matthew Aaron Gassen
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 Aaron Gassen's NPI number?
Matthew Aaron Gassen's NPI number is 1619065695. It was assigned on October 11, 2006, and it is active in the NPI Registry.
What does Matthew Aaron Gassen specialize in?
Matthew Aaron Gassen is a general practice dentistry in Columbia, Missouri. The primary specialty in the NPI Registry is General Practice Dentistry (taxonomy code 1223G0001X).
Where does Matthew Aaron Gassen practice?
Matthew Gassen practices at 1801 Stadium Blvd, Jefferson City, MO 65109-1947. Matthew Gassen also practices at 300 Portland St, Columbia, MO 65201. Matthew Gassen's primary practice is Gassen Dentistry in Jefferson City, Missouri.
What is Matthew Aaron Gassen's office phone number?
The practice phone on file for Matthew Gassen is (573) 634-3050.
What is Matthew Aaron Gassen's medical license number?
Matthew Gassen holds Missouri license 2001012606.
Has Matthew Aaron Gassen received payments from drug or device companies?
CMS Open Payments shows $119 in general payments to Matthew Gassen from 2 companies from 2025 to 2025. The largest total came from Patterson Companies, Inc.
How long has Matthew Aaron Gassen been practicing?
Matthew Gassen's NPI was assigned in 2006.
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